Answer:
hydrogen and oxygen
Explanation:
Because his form is h2o
Answer:
INORGANIC MINERALS, this group of contaminants includes the minerals and toxic metals
RADIOACTIVE MINERALS, this group is really a subset of the first group and can include uranium, plutonium and radium
ORGANIC CONTAMINANTS, organic contaminants and wastes are compounds primarily composed of carbon, hydrogen, and potentially other elements. Gas or liquid-phase organic contaminants may include volatile organic compounds in the form of solvents, chemical precursors and intermediates, petroleum compounds.
which of the following best describes a living cell?
cause infections
make and use energy
smallest unit of life
respond to stimuli
reproduce
hijack living organisms
The smallest unit of life is the best that describes a living cell.
Explanation:
The cells are the smallest unit of living thing. A living thing is composed of one cell or more cells are known as organism. All living organisms are made up of cells they are the structural unit of organization.
The organisms that are made up of one cell is known as unicellular and the organisms that are made up of multiple cells are known as multicellular. Each and every organisms need energy to survive.
The group of similar cells combine and perform specific function is known as tissues.
What observations can you make about this group of people? Name one inference you can make from your observations
Answer:
The people are part of a softball team. They appear happy, they are showing the number one with their fingers, and they are holding a trophy. They probably won the softball league championship
The picture showing a winning team holding a big trophy indicating towards their success.
The picture is indicative of a sports team which has a majority of girls. The raised index finger in some of the team members is indicative of symbol of victory and joy. These people are smiling for a group photograph with their winning trophy. The inference can be deduced from the observations are as follows:1. It is indicative of spirit of sportsmanship and unity of team.
2. Joy and happiness can be observed on face of team mates.
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4.
One of the jobs of the endocrine system is to give directions to your body
about when to grow and develop. Can you think of some times during a
person's life when the body changes?
Avita
Answer:
When growing up.
Explanation:
Such as hitting puberty
what is threatened by an increase in fungal diseases? check all that apply.
Answer: Crops such a rice, wheat, and soybeans.
Animal biodiversity
Plant biodiversity
Explanation:
People are most successful at noticing an analogous relationship between problems if they focus on
Answer:
The correct answer is "structural features".
Explanation:
The missing options of this question are:
structural features.
surface features.
mental sets.
operators.
The correct answer is "structural features".
Regarding problem-solving scenarios, structural features are defined as causal relationships involved in problem situations. According to the 1987 scientific article "Surface and structural similarity in analogical transfer" by Keith J. Holyoak & Kyunghee Koh, structural features have a greater impact on people's problem solver’s ability than surface features, which do not have a causal role.
A part of the auditory pathway responsible for auditory reflexes is the
The part of the auditory pathway responsible for auditory reflexes is the superior olivary complex, which operates within the complex network of ascending and descending auditory pathways.
The auditory reflexes in the human body are an integral part of the auditory pathway. A part of the auditory pathway responsible for auditory reflexes is the superior olivary complex.
The ascending auditory pathway includes various brainstem nuclei like the cochlear nuclear complex and superior olive before ascending to the midbrain's inferior colliculus, the thalamic medial geniculate nucleus, and finally to the primary auditory cortex. The comprehensive pathway ensures that sound is heard, localized, and processed effectively.
In addition to the ascending auditory pathway, the descending auditory pathways also play a crucial role in hearing and auditory reflexes. These pathways start from the primary auditory cortex, projecting downward to influence lower structures such as the medial geniculate nucleus, inferior colliculus, and cochlear nuclear complex. One of the functions of these descending pathways is to modulate auditory reflexes in response to loud noises or other important auditory cues.
A fly has two alleles for the color of its eyes. The green allele is recessive, and is represented by Q. The blue allele is dominant, and is represented by P. If 20 of 100 organisms are green, what is Q?
The value of Q is 0.44 if 20 organisms of 100 organisms are green.
Explanation:
Data given:
alleles for the color of eyes of fly:
blue allele = dominant represented by P
green allele = recessive, represented by Q
total number of organism = 100
number of recessive trait organism, [tex]q^{2}[/tex] = 20
Q =?
The allele frequency of the green eye is calculated as:
[tex]\frac{total number of recessive alleles}{total number of all alleles}[/tex]
= [tex]\frac{20}{100}[/tex]
[tex]q^{2}[/tex]= 0.2
q = [tex]\sqrt{0.2}[/tex]
q = 0.44
0.44 is the frequency of Q allele in the population.
Q is the homozygous recessive alleles in the population and its value is 0.44.
Answer:
A: .45
Explanation:
Bicoid mRNA is expressed in a gradient in Drosophila embryos. Loss of Bicoid function leads to embryos with two posterior ends. If researchers injected bicoid mRNA into the posterior end of an embryo with no bicoid function, the embryo would most likely develop _.
A normally B with two posterior ends C with two anterior ends D with no anterior–posterior body axis
Explanation:
C with two anterior ends
Bicoid mRNA is actively limited to the anterior of the organic product fly egg during oogenesis along microtubules by the engine protein dynein, and held there through relationship with cortical actin Interpretation of bicoid is managed by its 3' UTR and begins after egg depositionThe posterior region (counting the hindgut) grows and stretches out towards the anterior pole along the dorsal side of the incipient organismSegments of the incipient organism become noticeable, making a striped course of action along the anterior-posterior axisFinal answer:
Injecting bicoid mRNA into the posterior end of an embryo lacking bicoid function would likely lead to the development of two anterior ends (C), as bicoid is responsible for anterior development in Drosophila.
Explanation:
If researchers injected bicoid mRNA into the posterior end of an embryo with no bicoid function, the embryo would most likely develop with two anterior ends. The bicoid protein acts as a morphogen that establishes the anterior-posterior axis in Drosophila embryos. Normally, bicoid mRNA is localized to the anterior end of the egg, which leads to the gradient formation necessary for the proper development of the head and thorax. However, when bicoid mRNA is artificially placed at the posterior end in an embryo lacking functional bicoid, it can lead to the translation of bicoid protein there, possibly mimicking the anterior environment and thus inducing anterior structures in the place of posterior ones.How do plants get the carbon dioxide they need for photosynthesis?
A
Carbon dioxide is produced in a chemical reaction inside their chloroplasts.
B
Carbon dioxide enters their leaves from the atmosphere.
c
Carbon dioxide enters their roots from the soil.
D
Carbon dioxide is produced in a chemical reaction inside their mitochondria.
How are food webs different to food chains explain why food webs are more useful
Women can inherit alleles of a gene called BRCA1 that puts them at higher risk for breast cancer. The alleles associated with elevated cancer risk are dominant. Of the genotypes listed below, which carries the lowest genetic risk of developing breast cancer?
A. All carry equal risk.
B. BB
C. Bb
D. bb
E. BB and Bb carry less risk than bb.
Pepsinogen is an:________.
a) inactive precursor to the enzyme pepsin that digests proteins in the stomach.
b) active enzyme that is released in the small intestine and digests carbohydrates.
c) active enzyme that digests proteins within the small intestine.
d) inactive precursor to a nonspecific enzyme that is synthesized in the pancreas and released in the small intestine.
Answer:
The inactive precursor to the enzyme pepsin that digests proteins in the stomach. (Ans A)
Explanation:
Pepsin is known as a digestive enzyme which is present in humans and other species digestive system. It is produced by the stomach, where it helps to digest the proteins and break down into amino acids which are present in food. In the stomach, a cell is known as a peptic or chief cell that helps to release Pepsinogen.
The Pepsinogen secreted by Chief cells is an inactive form of pepsin, on exposure to HCL (hydrochloric acid secretion from Parietal cells), gets converted to the active enzyme pepsin because HCL provides necessary acidic environments where pepsin work best. Then Pepsin hydrolyzed the proteins to polypeptide and starts protein digestion in the stomach.
Pepsinogen is an inactive precursor to the enzyme pepsin, which digests proteins in the stomach. It is produced by gastric chief cells, then activated by the stomach's acidic environment.
Explanation:Pepsinogen is an inactive precursor to the enzyme pepsin that digests proteins in the stomach. It is produced by the gastric chief cells located in stomach lining and is activated by the acidic environment in the stomach. When food reaches the stomach, gastric acid lowers the pH, triggering pepsinogen to convert into active form i.e. pepsin. The primary role of pepsin is to break down proteins into smaller peptides for easier digestion later in the small intestine. Therefore, option a) inactive precursor to the enzyme pepsin that digests proteins in the stomach is the correct answer.
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Does a male InheritAnd the X chromosome from his mother or his father?
Answer:
A male inherits the X chromosome from his mother
Explanation:
A male then inherits the Y chromosome from his father and the X chromosome form his mother
The vagina is: A. lined by simple columnar epithelium rich in goblet cells B. similar to the inner lining of the uterus C. a muscular tube extending between the uterus and the external genitalia D. another term for the cervix
Answer:
The correct answer is option C. "a muscular tube extending between the uterus and the external genitalia".
Explanation:
The vagina could be defined as a muscular tube extending between the uterus and the external genitalia. The vagina is attached to the uterus through the cervix, and it is the inner structure of the external genitalia where sexual intercourse takes place. Vagina is part of the internal genitalia of women, as well as the cervix, uterus, fallopian tubes, and the ovaries.
Answer: Option C.
A muscular tube extending between the uterus and the external genitalia.
Explanation:
Vagina is a muscular, soft and flexible canal that extend between the cervix of the uterus and the external genitalia. It is found in female mammals. It lubricates and provide sensation. It is elastic and connect the uterus to outside.
Why is it ineffective to treat viral disease with antibiotics? Why is it ineffective to treat viral disease with antibiotics? Pathogenic RNA viruses have a high rate of mutation, producing new genetic varieties that are insensitive to antibiotic treatment. Due to excessive antibiotic use, most viruses have evolved to be resistant to antibiotics. Antibiotics inhibit enzymes specific to bacteria and have no effect on virally encoded enzymes.
Answer:
Antibiotics inhibit enzymes specific to bacteria and have no effect on virally encoded enzymes
Explanation:
The specificity of the antibiotics to inhibits some bacterial enzymes is one of the major reasons why antibiotic do not affect viruses.In addition antibiotics are designed to have a significant destructive effects on the mechanisms of biochemical reactions in bacteria and its physiology, e,g on the cells walls,( inhibiting the formation of peptydoglycans) on certain organelles e,g ribisomes (inhibiting protein synthesis) and on the DNA(disrupting replication). The virus physiology is different from bacteria, therefore the design of antibiotics will nor affect these same mechanisms in viruses, thus no specificity for the antibiotic to act on in virus
Answer:
Antibiotics inhibit enzymes specific to bacteria and have no effect on virally encoded enzymes
Explanation:
Viruses can be inhibited by different approaches depending on the type of virus (viruses are classified into DNA or RNA viruses, single or double-stranded viruses, etc).
One of the most commonly used techniques to protect against viral infections is by vaccination
When the supplies of a product decrease, the price of the product tends to increase. How might continuing increases in the price of fossil fuels affect research on the development of renewable resources, such as wind power and solar energy?
Continuing increases in the price of fossil fuels can lead to increased research and development of renewable resources such as wind power and solar energy. Higher prices of fossil fuels can create a market for innovation and development in the renewable energy sector, as consumers seek cheaper alternatives. Government support and policies can also further encourage the adoption of renewable energy sources.
Explanation:Continuing increases in the price of fossil fuels can have a significant impact on research and development of renewable resources like wind power and solar energy. As the prices of fossil fuels such as oil increase, the demand for renewable resources increases. This increased demand leads to more investment in research and development of renewable energy technologies.
For example, as the price of oil increases, consumers may start using solar energy or wind power as a cheaper alternative. This increased demand for renewable energy sources creates a market for innovation and development in the renewable energy sector.
Moreover, higher prices of fossil fuels can also lead to increased government support and policies promoting the adoption of renewable energy sources. Governments may provide subsidies and tax incentives to encourage investment in renewable energy technologies.
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Examine the physical characteristics of the frog and
determine if it is a vertebrate or an invertebrate. Be
sure to justify your answer.
The frog should be treated as the vertebrate organisms. Here vertebrates means the animal which comprise of backbone.
What are vertebrate organisms?All animals that contain a backbone are known as the vertebrates. They are considered normally the most familiar of animals, and involved the fish, amphibians, reptiles,etc. Since the frogs contains the vertebrae’s that should be located in the backs so they should fall in the vertebrate animal class.
Therefore, we can conclude that The frog should be treated as the vertebrate organisms.
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Match these prefixes to their meanings.inter, meta, ischi, acro, supraThe prefix _________ means ischium or hip joint.The prefix _________ means between or among.The prefix _________ means above, higher than, or dorsal.The prefix _________ means end or tip.The prefix _________ means after, along, or behind.
Explanation:
The prefix "ischi" which means ischium or hip joint used in anthropology for study the skeleton analysis to determine the height,sex & ageThe prefix "inter" which means between or among to filled the sentences to complete the verb in englishThe prefix "supra" which means above, higher than, or dorsal to determine the number of adding and word to define the number of greater valueThe prefix "acro" which means end or tip for define the ending and steps of the finshing in projectThe prefix "meta" which means after, along, or behind to define the past and the word of tense and complete the sentences in english and all subjectA prefix is the group of letters which are added in the beginning of words. Ischi is the prefix for hip joint, inter for between, supra is above, acro is end, meta is along.
Match these prefixes to their meanings inter, meta, ischi, acro, supra. The prefix ischi means ischium or hip joint.The prefix inter means between or among.The prefix supra means above, higher than, or dorsal.The prefix acro means end or tip.The prefix meta means after, along, or behind.
Thus, the prefixes are letters which are added in the beginning of a word which can change the meaning of the word.
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when did NASA begin collecting satellite data on Arctic sea ice?
Answer:
December 1972
Explanation:
Useful satellite data concerning sea ice began in December 1972 with the Electrically Scanning Microwave Radiometer (ESMR) instrument from NASA.
NASA began collecting satellite data on Arctic sea ice in 1978 using the Nimbus-7 satellite and the Scanning Multichannel Microwave Radiometer (SMMR). This data has been crucial in monitoring changes in the Arctic sea ice cover over time and understanding the impact of climate change on the region.
Explanation:NASA began collecting satellite data on Arctic sea ice in 1978, when it launched the Nimbus-7 satellite. The satellite carried the Scanning Multichannel Microwave Radiometer (SMMR), which was able to measure the microwave radiation emitted by sea ice and provide information on its extent and concentration.
This data has been crucial in monitoring changes in the Arctic sea ice cover over time and understanding the impact of climate change on the region. Since then, NASA has continued to collect satellite data on Arctic sea ice using various instruments and missions, including the Advanced Microwave Scanning Radiometer (AMSR) and the Ice, Cloud, and land Elevation Satellite (ICESat).
By analyzing this data, scientists have been able to observe the decline of Arctic sea ice and study its effects on the climate, ecosystem, and human activities in the region.
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Peter is a 30-year old man whose father died of Huntington’s disease. Neither Peter’s mother nor a much older sister show any signs of Huntington’s. What is the probability that Peter has inherited Huntington’s disease?
Answer:
50%
Explanation:
Huntington's disease is an autosomal dominant disorder that leads to progressive brain impairment and cognitive problems
The probability that Peter can inherit this disease from his father is 50% (who is carrier of the defective allele), having into account that no sign of this disorder is observed from the mother's family
An organism's reproductive strategy includes all of the following except
A . The number of offspring produced
B . The length of the time parental care is given
C . The adaptions passed to an offspring
D . The amount of energy expended in producing offspring
Answer: A
Explanation:The reproductive system included as the knowledge of knowing that it will take up a lot of energy and about 9 months and you know that the parents genes will passed to them but they don’t know how much kids they will have
Answer:
The adaptations passed on to an offspring
Explanation: I selected the answer choice "the number of offspring produced" but it was marked incorrect and the correct answer was given as "the adaptations passed on to an offspring"
Rosa is 20 years old and beginning an exercise program. Her goal is to exercise at moderate intensity. What target heart rate range (beats per minute) should she try to maintain during exercise?Rosa is 20 years old and beginning an exercise program. Her goal is to exercise at moderate intensity. What target heart rate range (beats per minute) should she try to maintain during exercise?80 to 90 bpm100 to 140 bpm160 to 180 bpm185 to 200 bpm
Answer:
100 to 140 heart beats per minute
Explanation:
Heart rate basically refers to the speed of the heartbeat which is most times measured by the number of times the heart of a human being contracts in a minute. It can always vary depending greatly on the physical needs of our body and the need to take in oxygen and exhale carbon(iv)oxide.
In the case of Rosa who's only 20 years old and intends exercising at moderate intensity, the advisable or normal heart rate of of young adults of her age who has probably not developed a medical condition of the heart should be anything from 100 to 140 heart beats per minute, that is since she intends to train or exercise at moderate intensity.
A gene that is normally transcriptionally active can be "silenced" if it is relocated (through experimental manipulation) to certain regions of the chromosome (e.g., near the centromere, which is "heterochromatin-rich"). This phenomenon is an example of
Answer:
Position Effect
Explanation:
Position effect is referred to the effect on gene expression when the gene is translocated from the location it is on a chromosome to another location.
As it relates to gene silencing and euchromatic gene repositioning, Position effect variegation best explains it.
Position effect variegation occurs when a gene in some cells is silenced as a result of rearrangement of chromosomes which translocate or reposition euchromatic genes close to vicinity of heterochomatin. It is this abnormal chromosomal juxtaposition that leads to the gene silencing in stochastic pattern.
how do bones divide by shape? Give examples whilst explaining !
Answer:
dsfdsfdsfdfd
Explanation:
Complete the sentence. Histone proteins increase the transcription rate for a particular gene. stabilize condensed chromosomal DNA during transcription. bind tightly to DNA and strengthen hydrogen bonds between bases. regulate gene expression by reducing the rate of transcription.
Histone proteins have multiple functions in gene regulation and can increase the transcription rate for a particular gene. They stabilize chromosomal DNA during transcription and bind tightly to DNA to strengthen hydrogen bonds between bases.
Explanation:Histone proteins are a type of protein that help organize and package DNA in the nucleus of a cell. They play a key role in gene regulation and can influence the transcription rate of specific genes. Histones help stabilize chromosomal DNA during transcription by forming nucleosomes, which are repeating units of DNA wrapped around histone proteins. This packaging helps protect the DNA and also allows for efficient gene expression. Additionally, histones bind tightly to DNA and can strengthen the hydrogen bonds between bases in the DNA molecule.
Overall, histone proteins have multiple functions in gene regulation, including increasing or decreasing the rate of transcription. By binding to DNA and modifying its structure, histones can help control which genes are active or silent in a cell.
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Nematodes and arthropods both _____. _____ Select one: a. develop an anus from the blastopore (pore) formed in the gastrula stage b. are suspension feeders c. grow by shedding their exoskeleton d. are lophotrochozoans e. have ciliated larvae
Answer:d
Explanation:nematodes are round worms.they live in sea ,land or freshwater habitat.they have an hydrostatic skeleton for movement. They possess a flexible and non-cellular cuticle.They are known for shedding their cuticle. This process is necessary for their growth.an example of nematode is the hookworm.
Arthropods are the most diverse phylum in the animal kingdom.they have jointed appendages and an exoskeleton containing chitin.they may be segmented into head and truck, head, thorax and abdomen or cephalothorax and abdomen.they tend to shed of their exodkeleton during the process of metamorphosis . examples of arthropods include ticks, cockroaches
Nematodes and arthropods both grow by shedding their exoskeleton, a process known as ecdysis, which aligns them within the Ecdysozoa clade.
Explanation:The question pertains to similarities between nematodes and arthropods. The correct answer is that nematodes and arthropods both grow by shedding their exoskeleton. Both groups belong to the clade Ecdysozoa, which is characterized by the process of ecdysis, the periodic shedding or molting of their exoskeleton. This allows the organisms within this clade to grow. Arthropods, with their hard exoskeleton and jointed appendages, and nematodes, with their pseudocoelom and sometimes simplistic body plan, both require molting for growth due to their outer covering. In contrast, lophotrochozoans, like annelids and mollusks, grow continuously and do not molt, differentiating them from the ecdysozoan clade.
The process of creating several different species from one ancestral species is called _____________________ _____________________.
Answer:
When the sub-populations become different enough genetically that they cannot interbreed, a new species is created. This process of creating several different species from one ancestral species is called adaptive radiation.
Explanation:
That should help!
A complex nervous system usually includes a And several Organs
A complex nervous system usually includes a And several Organs like pinal wire, nerves, and ganglia.
What are parts of nervous system ?The nervous system includes the mind, spinal wire, sensory organs, and all the nerves that join those organs with the relaxation of the frame. Together, those organs are answerable for the manage of the frame and communique amongst its components.
These, in turn, include diverse tissues, which include nerve, blood, and connective tissue. Together those perform the complicated function of the nervous system.
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The student's question is about the components of a complex nervous system, which includes the brain and various nervous organs like the spinal cord and nerves. The central nervous system and the peripheral nervous system work together to control and process information within the body.
Explanation:A complex nervous system usually includes a brain and several nervous organs, such as the spinal cord and a network of nerves. In humans, the nervous system is divided into two main parts: the central nervous system (CNS), which includes the brain and spinal cord, and the peripheral nervous system (PNS), which is a network of branching nerves that travel throughout the body.
The brain is the control center of the nervous system and is the most complex organ in the human body. It contains around 100 billion neurons and is responsible for mental processes, interpreting sensory information, and controlling physical processes. The spinal cord works together with the brain to relay information and execute motor commands. The CNS and PNS coordinate to regulate and maintain bodily functions, ensuring that the organism operates smoothly as a whole.
Other animals have different structural arrangements of their nervous systems, ranging from very simple to highly complex, as in the case of insects. Within the greater context, the nervous system is one part of the organ systems that work together to form the complete organism, thus highlighting the multiple levels of organization in living systems.
Suppose members of a true-breeding strain of salamanders with yellow stripes are crossed with a true-breeding strain with red stripes. Red and yellow are two alleles of the same gene. The resulting offspring have both yellow stripes and red stripes. Which dominance pattern is most likely?
Answer:
Co-dominance pattern
Explanation:
Co-dominance is a phenomenon in which the two alleles of a gene exert equal effects on each other. That is neither allele of a gene is has the ability to suppress the expression of the other.
On the other hand, the alternate version of a gene represented by alleles are both expressed phenotypically in individuals carrying a co-dominant gene.
Apart from the illustration shown in the question, a good example of co-dominance can be observed in the human ABO blood system in which both allele A and B are expressed in individuals with AB blood group.
Which regions of the nephron function independently of hormonal control for the most part?
Answer:
Renal corpuscle, proximal tubule, and loop of henle.
Explanation:
Renal corpuscle is blood filtering part of the nephron which consist of Bowman's capsule and glomerulus. It works independently of hormonal control and filter the blood circulate through this glomerulus.
Proximal tubule is the component of nephron which starts from the renal pole of Bowman's capsule to the loop of henle and it involves in the selective reabsorption of glucose, peptides, water and other nutrients from tubule to the blood. It works independently of hormonal control.
Loop of henle is the U shaped part of nephron which is responsible for absorption of water and sodium chloride from urine to back into blood circulation. It is also work independently of hormonal control.
Answer:
Renal corpuscle, proximal tubule, and loop of Henle are the regions of the nephron which function independently from harmone.
Explanation:
These three parts of the nephron work without the intervention of harmones. Renal corpuscle is an important part of nephron which is responsible for the removal of waste material from the blood by filtration. Proximal tubule helps in the regulation of pH of the blood and also releases organic acids into the filtrate while loop of Henle reabsorp water and salts such as sodium chloride from the urine and added to the blood.