Answer:
The correct answer is giant clam.
Explanation:
Clams are not arthropods, they're actually mollusks, specifically bivalves. All of the other options classify as arthropods, even the crabs, that also are arthropods. Also, the spiders are arthropods, although they're not hexapods. Therefore, clams are the only individuals that don't belong to the arthropods.
Terrestrial biomes include all of the following regions except the _________ region.
You are studying nuclear lamins and use recombinant DNA technology to alter the coding sequence of a nuclear lamin gene. The alteration you make creates a situation such that the gene now codes for a nuclear lamin protein that can no longer be phosphorylated when the nuclear envelope is broken down during mitosis. What do you predict would happen if the cell only had the altered nuclear lamin gene (and not the unaltered version)?
(a)Mitosis should proceed as usual because the dephosphorylation of the lamin is what is important for nuclear lamina assembly during mitosis, so phosphorylation will not be necessary.(b)Disassembly of the nuclear lamins will occur prematurely because the lamins cannot be phosphorylated.
(c)Nuclear lamins will no longer disassemble properly during mitosis.(d)Nuclear lamins will be unable to produce dimers, as coiled-coil formation will be disrupted.
Answer:
(b)Disassembly of the nuclear lamins will occur prematurely because the lamins cannot be phosphorylated.
Explanation:
The alteration made to the nuclear lamin gene would likely disrupt the disassembly of nuclear lamins during mitosis. This disassembly is crucial for successful cell division as it allows the nuclear envelope to break down and makes the chromosomes accessible for segregation. Without phosphorylation, this might not occur properly.
Explanation:The subject matter of this question revolves around nuclear lamins, proteins that hold a crucial role in the structure of a cell's nucleus. They are involved in processes such as DNA replication and cell division. Specifically, the question focuses on the phosphorylation of nuclear lamins during mitosis.
The correct answer would be option (c): Nuclear lamins will no longer disassemble properly during mitosis. Phosphorylation of nuclear lamins is a crucial step in mitosis. It triggers the disassembly of the nuclear lamina, allowing the nuclear envelope to disintegrate and making the chromosomes accessible for segregation to the daughter cells. If the nuclear lamins cannot be phosphorylated, this means they will not disassemble properly when the nuclear envelope breaks down during mitosis, possibly leading to errors in chromosome segregation and thus affecting the overall cell division process.
This is an interpretation based on the known function of nuclear lamins and the well-studied process of mitosis in eukaryotic cells, assuming the modification of the lamin gene does not have any other unintended effects on the cell's function.
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What is the main structural difference between the somatic and autonomic nervous systems?
Answer:
The number of neurons needed to transmit signals
Explanation:
Somatic Nervous System: it regulates the voluntary movement of skeletal muscles, its major components are cranial and spinal nervesAutonomic Nervous System: its involuntarily managed, its major components are the sympathetic and parasympathetic nervous systems and it acts on glans and smooth and cardiac muscles.Their main structural difference between both systems is that the somatic nervous system needs only one efferent neuron to transmit a signal while on the other hand, the autonomic nervous system needs two efferent neurons and ganglia to transmit a signal.
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What organelle of skeletal muscle cells stores calcium used in muscle contaction?
The sarcoplasmic reticulum is the organelle in skeletal muscle cells that stores calcium used for muscle contraction. When signaled, it releases the calcium into the cytoplasm, initiating muscle contraction.
Explanation:Sarcoplasmic reticulum is the organelle of skeletal muscle cells that stores calcium used in muscle contraction. This specialized type of smooth endoplasmic reticulum wraps around each myofibril in the muscle cell like a loose sleeve. When the muscle is signaled to contract, calcium ions are released from the sarcoplasmic reticulum into the surrounding cytoplasm, triggering a series of events that lead to muscle contraction.
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In skeletal muscle cells, the sarcoplasmic reticulum stores and releases calcium ions which are crucial for triggering muscle contractions. Post contraction, calcium ions are transported back into the sarcoplasmic reticulum, with some remaining in the sarcoplasm to maintain muscle tone.
Explanation:The sarcoplasmic reticulum is an organelle found in skeletal muscle cells that plays a critical role in muscle contraction. This specialized smooth endoplasmic reticulum (SER) stores, releases, and retrieves calcium ions (Ca++) which are necessary for triggering muscle contractions.
The process starts when an action potential reaches the muscle cell, prompting the sarcoplasmic reticulum to release stored calcium ions into the sarcoplasm (the cytoplasm of a muscle cell). Calcium ions then bind to the contractile proteins actin and myosin, generating a muscle contraction.
Once the contraction is over, ATP-dependent calcium pumps actively transport calcium ions back into the sarcoplasmic reticulum and out of the cell, until the next contraction needs to be initiated. The remaining calcium in the sarcoplasm helps to maintain muscle tone, keeping the muscle slightly contracted.
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During exponential growth, a population always ________. a) grows at its maximum per capita b) rate increases by the same number of individuals c) each generation grows by thousands of individuals d) quickly reaches its carrying capacity
Answer: A
Explanation:
Exponential growth simply means a rapid increase in size and a constant growing rate
During exponential growth, a population always grows at its maximum per capita. This type of growth is typically seen in environments with abundant resources and few limiting factors. However, as resources become limited, the growth rate will slow down and eventually reach a point where the population stabilizes, known as the carrying capacity.
Explanation:In biology, during exponential growth, a population always grows at its maximum per capita. This means that the population size increases at its fastest rate possible, with each individual producing the maximum number of offspring. This type of growth is typically seen in environments with abundant resources and few limiting factors. However, as resources become limited, the growth rate will slow down and eventually reach a point where the population stabilizes, known as the carrying capacity.
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D. Species reintrouuLLIUI
7. Which of the following is a main goal of a Species Survival Plan?
A. breeding new species
B. using DNA to recover extinct species
C. reintroducing captive-bred organisms into the wild
D. cloning extremely endangered organisms to increase their population size
Answer:
D. cloning extremely endangered organisms to increase their population size
Explanation:
the main goal of Species survival plan is management of population and survival of them. the plan is used for the implementation of the methods and strategies can be used for the survival of endangered species for example cloning extremely endangered organisms to increase their population size
Answer:
D. cloning extremely endangered organisms to increase their population size
Explanation:
In pea plants, the peas produced may be green or yellow, with yellow being the dominant form of the allele. What would be the phenotype of a pea plant that is heterozygous for the alleles?
Answer:
yellow
Explanation:
mendel's law of dominance
Most cnidarians are known to produce toxins. In fact, it has been claimed that one particular species produces the most deadly of all toxins on the planet. What feature of this group most likely evolved simultaneously with the evolution of these toxins?
Answer:
A slow-moving or sessile lifestyle in the adult.
Explanation:
Evolution is change in the characteristics of species with respect to time. Natural selection acts as the main driving force for the process of evolution.
The cnidarians species shows motility and adults are generally sessile in nature. The protection of the cnidarians is important for their survival and reproduction. This evolves the development of the deadly toxin by the cnidarians that kills their enemies and protect themselves from the predator.
Thus, the correct answer is a slow-moving or sessile lifestyle in the adult.
in addition to revealing chromosome abnormalities, what other information about an individual would a karyotype show?
In addition to revealing chromosomal abnormalities karyotype gives information about the gender of an individual.
Explanation:
A karyotype is the complete information about the chromosomes of an individual, the size, number and type of chromosomes. Analysis of karyotype of an individual gives information about chromosomal abnormalities and genetic disorders if any, in that individual. It is not the only information karyptype gives.
It also gives an idea about the sex of the individual. The sex chromosome of females is homozygous and that of males is heterozygous. Sex chromosome of a female can not be homozygous or heterozygous. Rather, a female can be heterozygous or homozygous for a given allele.
Final answer:
A karyotype reveals the number and structure of an individual's chromosomes, identifying conditions like Down Syndrome, Turner Syndrome, DNA deletions/insertions, and translocations related to specific health issues, including cancers.
Explanation:
A karyotype can provide valuable information about an individual's chromosomes and potential genetic conditions. For example, it can reveal if an individual has an abnormal number of chromosomes, such as in Down Syndrome with an extra chromosome 21, or in Turner Syndrome, where a female has only one X chromosome.
Additionally, a karyotype can identify structural abnormalities like large deletions or insertions of DNA segments, as well as translocations, which may be associated with various health conditions, including certain types of cancer like chronic myelogenous leukemia.
please answer all questions.
ELISA:
1- what is false positive? what kind of error could result this? what is false negative test? What kind of error could result this and why is this so dangerous, specially for AIDS?
2- After doing this lab, wold you agree or disagree with the following statement? "when you have sex with someone, you are also having sex with everyone that they have previously had sex with." explain your answer.
3- What was the purpose of washing the plates between the addition of each reagents?
4- how can you protect yourself from sexually transmitted disease?
5- list three fluorescent stains and their usefullness
Answer:
I need multiple answer.
Explanation:
The three basic regions of the cerebrum are the cerebral cortical gray matter
Answer:
a) Myelinated nerve fibres
b) The white matter
c) gray matter
Explanation:
The three main parts of cerebral hemispheres are
a) Myelinated nerve fibers
b) The white matter
c) Gray matter
The nerve fibers of the white matter are responsible for connecting the functional parts of cerebral cortex while the gray matter is further divided into four surface folds/lobes with each lobe associated with a specific activity. Such as frontal lobe take cares of motor activity and speech, parietal lobe is responsible for touch and position sensation, occipital lobe for vision and temporal lobe for hearing.
Which of the following lies between the cerebrum and the brain stem?A) medulla oblongataB) ponsC) mesencephalonD) diencephalonE) cerebellum
Answer:
Diencephalon
Explanation:
Brain stem and cerebrum are connected through diencephalon. It is a part of forebrain and carries sensory information and autonomic functions of the peripheral nervous system are also controlled by it. The brain stem is present beneath the cerebrum and cerebellum lies in front of it. It progresses from above the cerebrum and is connected to the spinal cord below. Medulla oblongata, one and midbrain are part of the brain stem
Acetylcholine stimulates cells in the pancreas to secrete enzymes that aid in digestion of sugars. It does so by activating GPCRs that stimulate the membrane-bound enzyme phospholipase C (PLC). PLC then triggers which of these downstream events?
Answer:
An elevation of cytosolic Ca2+ concentration, which leads to the activation of protein kinase C (PKC).
Explanation:
Pancreatic enzymes are stored in acinar cells inside zymogen granules and released when necessary. The pancreas secretes a wide range of enzymes, which includes proteases, carbohydrases (pancreatic amylase and, in some cases, chitinase) and pancreatic lipase.
Acetylcholine is a molecule that is produced in neurons and is necessary so that it can transmit the nerve impulse both at the level of the central and peripheral nervous system. It is one of the most important neurotransmitters, being the main neurotransmitter of the so-called cholinergic system.
Acetylcholine, which is released from parasympathetic nerve terminals, stimulates the secretion of insulin, glucagon, somatostatin and pancreatic polypeptide.
Phospholipase C is a phosphodiesterase in charge for hydrolysis of a glycerophosphate bond , Phospholipase C is the target enzyme for some GPCRs.
Protein kinase C, is a family of protein kinase enzymes that are involved in controlling the function of other proteins through the phosphorylation of hydroxyl groups of serine and threonine amino acid residues on these proteins, or a member of this family.
Which division detects stimuli of the general senses and special senses?
Answer:
Somatic Sensory division
Explanation:
Somatic Sensory division detects stimuli of the general senses and special senses.
Somatic Sensory division is part of peripheral nervous system, it runs from sensory organs to Central nervous system. This sensory division collects information from touch, pressure, feel, pain ,vision, teste and crries them to Central nervous System.
The sensory division of the nervous system detects stimuli for both general and special senses. General senses like touch are distributed throughout the body and do not have specialized organs, whereas special senses such as sight and hearing involve specific organs like the eyes and ears.
Explanation:The Sensory Division and Stimuli Detection:
The division that detects stimuli of the general senses and special senses is known as the sensory division. This division of the nervous system is tasked with carrying messages from sense organs, such as the eyes and ears, and internal organs to the central nervous system (CNS). The general senses, which include sensations like touch, temperature, pain, proprioception (body movement), and kinesthesia (body movement), do not have specialized sense organs and are distributed throughout the body. The special senses, which include sight, hearing, balance, taste, and smell, have specific organs associated with them: the eyes for vision, the ears for hearing and balance, the tongue for taste, and the nasal passages for smell.
The eyes are the specialized sense organs for sight, gathering visual information and converting it into nerve impulses that the brain can understand. Likewise, the ears are the sensory organs for hearing, with the inner ear also playing a critical role in maintaining balance. Tactile stimuli related to touch are detected by mechanoreceptors found in the skin and tissues, which provide feedback about our environment.
Which of these would be considered a cis-regulatory element for a gene? Group of answer choices
a.Methylation of DNA preventing transcription
b.A protein that binds to an enhancer to activate gene expression
c.A DNA binding protein that functions to repress transcription
d.A region of DNA sequence upstream of a gene where transcription factors bind
e.A ribosome that translates a mRNA sequence to produce a transcription factor
Answer:
The correct answer is option d. "A region of DNA sequence upstream of a gene where transcription factors bind".
Explanation:
Cis-regulatory elements (CREs) are fragments of DNA that do not encode to a protein, but regulate the transcription of nearby genes. CREs regulation is based on binding to transcription factors. These elements are vital for the regulation of complex molecular mechanisms that involve the participation of multiple genes. Additionally, CREs could participate in pleiotropy (a single gene being responsible for the development of multiple traits), because a single transcription factor could bind to different CREs.
Antidiuretic hormone causes the kidneys to
a. produce a larger volume of very dilute urine.
b. increases the permeability of the collecting ducts to water.
c. release is insensitive to the osmolarity of interstitial fluid.
d. is secreted in response to low potassium ion in the blood.
e. is secreted by the anterior pituitary.
Answer:
Anti-diuretic hormone causes the kidneys to increases the permeability of the collecting ducts to water .
Explanation:
The anti-diuretic hormones stimulates the process of water re-absorption by enhancing the water channels or aquaporins in the membranes of the kidney tubules. The solute free water are transferred through the channels in the tubular cells and back in the blood which then leads to decrease in the osmolarity of plasma with the increase in osmolarity of urine. The hormone is prepared in the hypothalamus of brain and stored in the pituitary glands. It reminds the kidney about the absorption of water, through which it maintains the balance of water in blood.
A news article discussing the evolution of domestic dogs from wolves included this statement: "On its way from pack-hunting carnivore to fireside companion, dogs learned to love or at least live on wheat, rice, barley, corn, and potatoes."
What is a more scientifically accurate way to state what happened with dogs?
A) Dogs mutated to be able to eat wheat, rice, barley, corn, and potatoes.
B) Some wolves may have had variants in their digestion that allowed them to eat wheat, rice, barley, corn, and potatoes and so were able tosurvive with humans.
C) Being around humans represented an advantage, so wolves were able to take advantage of that by changing their digestion to be able toeat wheat, rice, barley, corn, and potatoes.
D) Dogs were created at the same time as wolves.
Answer:
The correct option is B) Some wolves may have had variants in their digestion that allowed them to eat wheat, rice, barley, corn, and potatoes and so were able to survive with humans.
Explanation:
Organism of a population might have genetic variations in them due to many reasons. The species of a population which are better adapted to live in a particular area are able to survive and produce more offsprings. As a result, that particular area increases in that genetic variant.
In the above scenario, some of the wolves had variants in their digestion which made them better adapted to live with the humans as they could eat wheat, rice etc. The wolves which did not have variants in their digestion couldn't survive in the human areas.
Within kingdom Protista, _____ are subdivided into the flagellates, the amoebas, the apicomplexans, and the ciliates.
Within kingdom Protista, Protozoa are subdivided into the flagellates, the amoebas, the apicomplexans, and the ciliates.
Explanation:
The protist is an organism of eukaryotic family but is neither plant and fungus nor animal. It contents are divided in various super groups, like- protozoa, algae, excavate etc. It was first coined by Ernst Haeckel in the year 1886.
The ‘protists’ were divided in various groups depending on the kingdom that is higher. The first group is of Protozoa, a single celled organism that looks like animal. This group is again classified in super groups of – flagella, amoeba, ciliophora etc.
A horticulturist wants to produce geraniums with specific characteristics she knows that the trait of red flowers is governed bye the allele R and the trait of the white flowers is governed bye the allied r
The horticulturist crosses two geraniums from the F1 generation look at the punter square to see this cross what ration of red to white flowering plants would you expect to see in the phenotypes of the F2 generation
Answer:
Ration of red to white flowering plants in the phenotypes of the F2 generation is 3:1
Explanation:
Let us suppose that in the F1 generation, true breeding species were crossed with each other.
True breeding red flower geraniums will have genotype "RR"
And true breeding white flower geraniums will have genotype "rr"
Also, let us say that "R" is dominant over "r"
Then the offspring produced in F1 generation are -
RR * rr
Rr, Rr, Rr, Rr
All offspring are heterozygous red
F2 generation cross
Rr * Rr
RR, Rr, Rr, rr
Out of four , 3 offspring are red in color and one is white in color.
Thus, ration of red to white flowering plants is 3:1
Answer:
3 red : 1 white
Explanation:
How does biodiversity contribute to the sustainability of a habitat
Answer: The higher the biodiversity of an Habitat, the more
sustainable it is. Also, lower biodiversity equals less sustainability.
Explanation:
The term “biodiversity” is a coined from the phrase “biological diversity”. Biodiversity can be defined as the richness and variety of life of genes, species and ecosystem.
Biodiversity tells us a lot about the health of the biosphere. The greater the variety of species, the healthier the biosphere is. Why is this? This is because; the greater the species, the more links in food chains/webs. Also, the more the genes, the better chances for survival through adaptation.
On the other hand, Sustainability of an ecosystem is the ability of that ecosystem to maintain its structure and function over time in the face of inescapable external stress(e.g deforestation, tornadoes, floods, pollution, etc).
For an ecosystem, sustainability means maintaining ecological processes over long periods of time. These ecological processes includes evolution, food chains and webs, population dynamics, succession. e.t.c
So, if an ecosystem is able to maintain its structure and function over time in the face of external stress, it is said to be sustainable.
FURTHERMORE, The higher biodiversity in an ecosystem means that there is a greater variety of genes and species in that ecosystem. A great variety of genes and species means that the ecosystem is better able to carry out
natural processes. The ecosystem will therefore have more genes and species to help it carry out these processes. For example, there will be more species and more links in food webs, more plants to help with the biogeochemical cycles and more genes available for succession and evolution.
Biodiversity enhances ecosystem sustainability by increasing productivity and resilience, providing essential ecosystem services, and through the restoration and protection of keystone species, as demonstrated by the reintroduction of wolves to Yellowstone.
Explanation:How Biodiversity Contributes to Habitat SustainabilityBiodiversity plays a crucial role in ecosystem sustainability by enhancing productivity and stability, providing ecosystem services such as nutrient cycling, pest control, and pollination, and allowing ecosystems to be more resilient to environmental changes. For instance, diverse soil organisms enable nitrogen fixation and nutrient recycling, while various pollinators ensure that plants can reproduce. A notable example of the impact of biodiversity on an ecosystem is the reintroduction of wolves to Yellowstone National Park. As a keystone species, wolves helped to restore balance by controlling elk and coyote populations, leading to the revegetation of riparian areas and an increase in the diversity of other species. Restoration efforts emphasize the importance of biodiversity conservation to maintain the functionality of ecosystems and support human agriculture.
Keystone species are integral in maintaining biodiversity within ecosystems, and their removal can lead to a collapse in ecosystem diversity. The Yellowstone case highlighted the positive effects of reintroducing such species, which included enhancing populations of other species previously suppressed by predators like coyotes. Moreover, maintaining high biodiversity can increase ecosystem productivity, reduce year-to-year variability in productivity, and buffer ecosystems against disturbances. In essence, biodiversity is the life support for ecosystems, playing a role in everything from climate regulation to food production. Therefore, preserving and restoring biodiversity is essential for the health and sustainability of habitats.
An agouti mouse that is heterozygous at the agouti and albino loci (AaCc) is mated to an albino mouse that is heterozygous at the agouti locus (Aacc). Allele definitions: A_ = Agouti if non-albino aa = black if non-albino C_ = non-albino with A/a gene determining phenotype cc = albino independent of A/a gene genotype.
What percentage of the progeny do you expect to be albino?
What percentage of the progeny do you expect to be agouti?
What percentage of the progeny do you expect to be black?
Answer:
Percentage of progeny that are albino are 50.00%
Percentage of progeny that are agouti are 37.50%
Percentage of progeny that are black are 12.5%
Explanation:
This question is a classic example of the genetic phenomena known as "epistasis", “Epistasis” is a word composed of Greek roots that mean “standing upon.” The alleles that are being masked or silenced are said to be hypostatic to the epistatic alleles that are doing the masking.
The agouti mouse (AA), is dominant over the black (aa). However, a separate gene (C) is necessary for pigment production. A mouse with a recessive 'c' allele at this locus is unable to produce pigment and is albino regardless of the allele present at locus A.
Hence, A cross between heterozygotes for both genes (AaCc x Aacc)
is show in the pdf below and would generate offspring with a phenotypic ratio of:
albino : 8/16 (i.e 50.00%)
agouti: 6/16 (i.e 37.50%)
black: 2/16 (i.e 12.5%)
This is so FOR albino, Since cc_ = albino independent of A/a gene genotype. Therefore, all traits carrying albino independent is 8/16. i.e ( AAcc, Aacc, AAcc, Aacc, Aacc, aacc, Aacc, aacc)
= 50.00%
FOR agouti: Since C_ = non-albino with A/a gene determining phenotype & A_ = Agouti if non-albino. Therefore, any progeny carrying heterozygous agouti (i.e A) and albino (i.e C) is Agouti.
Hence, agouti = (those that are all heterozygous (AACc, AaCc, AACc, AaCc, AaCc, AaCc) )
=6/16 (i.e 37.50%)
FOR Black: Since aa = black if non-albino & C_ ( non-albino with A/a gene determining phenotype ). Black will be homozygous recessive agouti and heterozygous albino (aaCc and aaCc).
=2/16
= 12.5%
I HOPE THIS REALLY HELPS A LOT!.
Answer:
Percentage albino = 37.5%
Percentage agouti = 37.5%
Percentage black = 25%
Explanation:
The cross is between AaCc and Aacc.
The presence of C_ makes A_ to be agouti.
The presence of C_ makes aa to be black.
The absence of C makes A_ and aa to be albino
AaCc x Aacc
Offspring:
2 AACc Agouti
2 AAcc Albino
4 AaCc Agouti
4 Aacc Albino
2 aaCc Black
2 aaCC Black
Percentage albino = 6/16 x 100% = 37.5%
Percentage agouti = 6/16 x 100% = 37.5%
percentage black = 4/16 x 100% = 25%
See the attached image for the Punnet square analysis
In humans, the steroid hormone testosterone enters cells and binds to specific proteins, which in turn bind to specific sites on the cells' DNA. The result is expression of genes associated with male sexual characteristics. What is the function of these proteins?
Answer:
Translation is the process of formation of the protein from the RNA molecules. Different proteins and enzymes are required for the process of translation. Three steps of translation are- initiation, elongation and termination.
The testosterone hormone in humans beings help in the development of the sperms and the male secondary sexual characters. The testosterone hormone binds with the specific proteins. Protein then binds to the specific DNA sites. These proteins helps in the transcription of the specific genes and may acts as the enhancers molecules. These proteins helps in the transcription of the certain genes.
What evidence on Earth's surface shows deposition, erosion, and weathering?
In 1959, doctors began using the powerful antibiotic methicillin to treat infections of Staphylococcus aureus, but within two years, methicillin-resistant strains of S. aureus (MRSA) appeared. How did the resistant strains of S. aureus emerge?A) In response to treatment of Staphylococcus aureus infections with methicillin, some bacteria began to synthesize cell walls using a protein that was not affected by methicillin. These bacteria survived the methicillin treatments and reproduced at higher rates than did other individuals. Over time, these resistant individuals became increasingly common.B) In response to treatment of Staphylococcus aureus infections with methicillin, bacterial populations gradually began to synthesize cell walls using a protein that was not affected by methicillin.C) Staphylococcus aureus bacteria that were able to synthesize cell walls using a protein that was not affected by methicillin survived the methicillin treatments and reproduced at higher rates than did other individuals. Over time, these resistant individuals became increasingly common.
Answer:
The correct answer will be option-B
Explanation:
Staphylococcus aureus is a gram-positive, spherical and one of the first described pathogens by scientific communities. The S. aureus is known to cause a number of infections to humans in homes and hospitals and is able to adapt to the environmental conditions.
When Methicillin antibiotic was given to treat the infections caused by the S. aureus, within two years they became resistant to methicillin. This adaptability is the result of the due to the incorporation of the mecA gene at specific sites in their chromosomes.
This gene coded for an alternative penicillin-binding protein which has low affinity for the methicillin including other antibiotics. This gene spread to the S. aureus population and the species became resistant to methicillin.
Thus, Option-B is the correct answer.
Methicillin-resistant strains of Staphylococcus aureus (MRSA) emerged when bacteria with the ability to synthesize cell walls using a protein unaffected by methicillin survived treatment and reproduced at higher rates than other individuals.
Explanation:In response to treatment with methicillin, Staphylococcus aureus (S. aureus) bacteria that were able to synthesize cell walls using a protein not affected by methicillin survived the treatments and reproduced at higher rates than others. Over time, these resistant individuals became more common and led to the emergence of methicillin-resistant strains of S. aureus (MRSA).
Which of the following regions of the brain provides the precise timing and appropriate patterns of skeletal muscle contraction for the smooth, coordinated movements and agility that are needed for our daily living?
Answer:
Cerebellum.
Explanation:
Brain acts as the main control and coordination center of the body. Human brain is divided into three main parts - forebrain, midbrain and the hindbrain.
Cerebellum is the main part of hindbarin regulates the motor coordination and movement of the body. The involuntary and some sort of voluntary actions are controlled by the cerebellum. The contraction and relaxation of the smooth muscles is performed by cerebellum.
Thus, the correct answer is cerebellum.
A cell contains Select one: a. one kind of enzyme that promotes thousands of different chemical reactions. b. thousands of different kinds of enzymes, each promoting a different chemical reaction. c. one enzyme that promotes photosynthesis and one enzyme that promotes cellular respiration. d. approximately 100 kinds of enzymes, each promoting a different chemical reaction.
Answer:
The answer is letter B
Explanation:
A cell contains thousands of different kinds of enzymes, each promoting a different chemical reaction.
Final answer:
A cell contains thousands of different kinds of enzymes, with each one catalyzing a specific chemical reaction essential for the cell's functionality and life sustainability.
Explanation:
Enzymes are specialized macromolecular biological catalysts that are crucial for facilitating the vast array of chemical reactions that occur in living cells. Each enzyme has a unique three-dimensional structure that allows it to bind specifically to its substrates and catalyze a particular reaction at a site known as the active site. Fundamentally, enzymes are imperative for sustaining life because they are able to accelerate biochemical reactions to rates that support cellular functions and metabolic processes.
Diving deeper, it's evident that there are thousands of different kinds of enzymes in a cell, with each type promoting a specific chemical reaction. This is necessary as cells carry out multifarious reactions that require precise control and regulation. For instance, enzymes are responsible not just for aiding in the digestion of nutrients but also for reading genetic material to synthesize new molecules.
Therefore, when addressing the student's question, the accurate answer is that a cell contains thousands of different kinds of enzymes, each specialized to catalyze different chemical reactions.
And cabbage butterfly's white color is dominant and yellow color is recessive if a pure white cabbage butterfly meant to the yellow cabbage butterfly all the resulting butterflies are heterozygous white which cross represent the genotypes of the parents generation
Answer:
The genotype of the white parent will be homozygous and dominant and the genotype of the yellow parent will be homozygous and recessive in order to produce offsprings having genotype heterozygous white.
This cross can be shown as
w w
W Ww Ww
W Ww Ww
In the cross, the allele W is considered to be dominant over the allele w. Hnece, the white dominant parent will have the alleles WW. The recessive parent will have the alleles ww.
Final answer:
When a pure white ('WW') cabbage butterfly mates with a pure yellow ('ww') one, all the offspring will be heterozygous white ('Ww') as white is the dominant color.
Explanation:
To understand the cross between a pure white cabbage butterfly and a yellow cabbage butterfly, we need to look at genotypes and dominant and recessive alleles. Since white color is dominant, we will assign it the allele 'W', and since yellow is recessive, we will assign it 'w'. A pure white butterfly has the genotype 'WW', while a pure yellow has 'ww'.
When a 'WW' individual crosses with a 'ww' individual, all their offspring will have one allele for white and one for yellow, thus being heterozygous 'Ww'. This outcome can be predicted using a Punnett square, which is a grid used to determine the possible genotypes of offspring given the genotypes of their parents. Each offspring from this cross will display the white coloration because 'W' is dominant over 'w'.
According to the Nutrition Facts panel on a can of tuna, one serving of the fish supplies 16 g of protein. The DV for protein is 50g. Estimate the %DV for protein in a serving of the tuna.
Answer:
32%
Explanation:
16x100/50 = 32% Daily Value
To estimate the %DV for protein in a serving of tuna, you divide the protein amount in tuna (16g) by the total daily required protein intake (50g), then multiply by 100 to get it in percentage form. Hence, a serving of tuna supplies about 32% of your daily protein requirement.
Explanation:To estimate the %DV (Daily Value) for protein in a serving of the tuna, you just need to know the amount of protein in one serving of tuna and the total daily value for protein recommended. According to the Nutrition Facts panel on a can of tuna, one serving of the fish supplies 16 g of protein. The DV for protein is 50g. So, to find the %DV, we divide the amount of protein in tuna by the total DV and then multiply by 100 to get the value in terms of percentage.
Here is the formula: %DV = (Amount in tuna/Total DV) * 100%
Using the numbers provided: %DV = (16g / 50g) * 100% = 32%
So, a serving of tuna supplies approximately 32% of the daily protein requirement.
Besides protein, it's noteworthy that, tuna, along with salmon and trout, are good sources of omega-3 fatty acids which play an important role in brain function, normal growth and development, and may also prevent heart disease and reduce the risk of cancer.
Learn more about Protein %DV Calculation here:https://brainly.com/question/35358272
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You are caring for a client with shock. You are concerned about hypoxemia and metabolic acidosis with your client. What finding should you analyze for evidence of hypoxemia and metabolic acidosis in a client with shock?
Answer:
ABG - Arterial blood gas findings
Explanation:
The ABG test measures the pH and the oxugen and CO2 levels in the blood that goes through the arteries.
Glomerulonephritis, or inflammation of the glomerulus, will result leaky glomerular capillaries and damaged glomeruli, both which will cause the GFR to decrease. If GFR decreases, which mechanisms would be triggered to help maintain the GFR?A. Tubuloglomerular feedback and myogenic mechanism.B. RAAS and atrial natriuretic peptide.C. RAAS and myogenic mechanism.D. RAAS and tubuloglomerular feedback.
Answer:
RAAS and tubuloglomerular feedback.
Explanation:
Kidney is important organ of the body that performs the process of excretion. The kidney contains the millions of neurons that acts as the filtration unit.
In case of low glomerular filtration rate (GFR), the RAAS and tubuloglomerular feedback initiates in the body. Renin-angiotensin-aldosterone system increases the blood pressure and GFR rate by using the enzymes renin and angiotensin. The reabsorption of sodium chloride decreases and results in the increase of GFR in case of ubuloglomerular feedback mechanism.
Thus, the correct answer is option (D).