Answer:
The answer is A or the cactus look-a-like plant
I just took the test and scored an 88% and this answer was correct.
what is the advantage of sexual reproduction
A. Two parents are required
B. Only one parent is required
C. It leads to genetically diverse offspring
D. It leads to genetically identical offspring
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Visible quartz and potassium feldspar grains are the main constituents in:
He originally suggested that galaxies are moving farther away. He also suggested that the distance of a galaxy is proportional to its recessional speed. He is _____. A.Georges Lemaitre. B.Edwin Hubble. C.Albert Einstein. D.Robert Tolman.
Answer:
The correct answer is option B, that is, Edwin Hubble.
Explanation:
Edwin Hubble who lived within 1889-1953 is an American astronomer, who completed his studies from the University of Chicago. He discovered that nebulae are the galaxies and postulated the Hubble's law on the basis of which the universe is expanding.
According to him, the galaxies are going away from each other, and also stated that the distance of a galaxy is equivalent to its recessional speed.
the situation in which allele frequencies in the gene pool of a population remain constant brainly
The situation in which allele frequencies in the gene pool of a population remain constant is called genetic equilibrium or Hardy-Weinberg equilibrium.
This concept is based on the Hardy-Weinberg principle, which describes the relationship between allele frequencies and genotype frequencies in an idealized population under certain conditions. In order for a population to be in genetic equilibrium, the following conditions must be met:
No mutations: The allele frequencies remain constant in the absence of new mutations.
Random mating: Individuals in the population mate randomly, without any preference for specific genotypes or phenotypes.
No gene flow: There is no migration of individuals or genetic material between populations, preventing the introduction or loss of alleles.
No genetic drift: The population is large enough that random chance does not significantly impact allele frequencies.
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Which of Earth’s layers is just below the lower mantle?
Answer:
Outer Core
Explanation:
APEX
The Earth's structure can be divided into several layers: the crust, the mantle, the outer core, and the inner core. The layer just below the lower mantle is the outer core.
Layers of the Earth:
Crust:
The Earth's outermost layer is called the crust. It is the thinnest layer, ranging from about 5 to 70 kilometers in thickness.The crust is composed mainly of rocks such as granite and basalt.Mantle:
The mantle lies beneath the crust and extends to a depth of approximately 2,891 kilometers. It is the largest layer of the Earth by volume. The mantle is composed of solid rock that is capable of flowing over long periods of time, similar to a very thick and viscous liquid.Outer Core:
Below the lower mantle is the outer core, which extends from a depth of about 2,891 kilometers to approximately 5,150 kilometers. It is in a liquid state due to the high temperatures and pressures present at those depths. The outer core plays a crucial role in generating the Earth's magnetic field through the movement of the molten metal.Inner Core:
The inner core is located at the center of the Earth, beneath the outer core. It extends from a depth of approximately 5,150 kilometers to the Earth's center, which is about 6,371 kilometers from the surface. The inner core is a solid sphere composed mainly of iron and nickel.Thus, the layer below the lower mantle is the outer core.
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What could be a result of an injury to the dorsal column? loss of sensation to pressure and touch loss of control over all involuntary movements inability of the body to maintain homeostasis inability to regulate the sleep-wake cycle loss of motor control
Answer:
The correct answer would be a loss of sensation to pressure and touch.
The dorsal column-medial lemniscus pathway abbreviated as DCML refers to the sensory pathway of the central nervous system (CNS) which transmits sensations of vibration, fine touch, proprioception, and two-point discrimination from the skin as well as joints.
Thus, injury to the dorsal column would result in the loss of sensation to touch and pressure.
Answer:
The answer is A: loss of sensation to pressure and touch
Explanation:
The gastrovascular cavity differs from the alimentary canal in that only the gastrovascular cavity _____.
The gastrovascular cavity differs from the alimentary canal in that only the gastrovascular cavity has only a single opening
Explanation:
Both gastro vascular cavity and the alimentary canal are the digestive organs. They both have a sole difference. The gastro vascular cavity is a digestive organ that can be found only in the organisms with one openings like the Jelly fish, flat worms.
But the alimentary canal consists of a mouth in one end and an anus at the end to send away the excretion due to digestion. The alimentary canal is the organ of digestion found in birds, animals, birds. It helps to intake food, digest it, extract the nutrient and supply it to the other parts of the body and send the unwanted digestive products to the excretory system.
The gastrovascular cavity differs from the alimentary canal in that only the gastrovascular cavity has a single opening that serves both as a mouth and an anus. This type of digestive system is often referred to as an incomplete digestive system
Organisms with a gastrovascular cavity, such as hydras and jellyfish, use this cavity for both digestion and distribution of nutrients throughout their body. In contrast, an alimentary canal, which is present in organisms like nematodes, has two separate openings: a mouth for ingesting food and an anus for eliminating waste, making it a more complex and complete digestive system.
Extinction can be caused by _____. Select all that apply.
a) habitat destruction
b) invasive species
c) natural disasters
d) disease
Not sure if invasive species is one
A client with laënnec cirrhosis has a sengstaken-blakemore tube in place. the client becomes increasingly confused and tries to climb out of bed. the client's breath becomes fetid. what is the nursing priority
Explain how the anole lizard species on caribbean islands demonstrate both convergent and divergent evolution
If one species in a community dies out or moves, the community will
A) be affected.
B) stop working.
C) not be affected.
D) replace the species
Answer:
A) be affected
Explanation:
Unattached earlobes are dominant to attached earlobes. Cleft chin is dominant to no cleft. Parents that are heterozygous for both traits are crossed. Determine the genotype of the following offspring.
The characters that are visible on the outer surface is called phenotype and the characters coded by the genes are called genotypes. The gene having the allele for the recessive and the dominant trait together is said to be heterozygous.
a) 9:16 b) 3:16 c) 3:16 d) 1:16 is the ratio of the genotypes of the offspring.
How to determine the genotype?The alleles for the traits are given as:
The alleles for the Cleft chin = CCThe alleles for no Cleft chin = ccThe alleles for the unattached earlobes = EEThe alleles for the attached earlobes = eeParents with heterozygous trait = CcEeSee the attached image below for the Punnett square of the cross.
From the cross the ratios are:
Unattached earlobes and cleft chin = 9:16Unattached earlobes and no cleft = 3:16Attached earlobes and cleft chin = 3:16Attached earlobes and no cleft = 1:16Therefore, the genotype is 9:3:3:1.
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Final answer:
The student's question involves the genetic inheritance of unattached earlobes and cleft chin, both autosomal dominant traits. When heterozygous parents for both traits are crossed, four possible genotype combinations (FfBb, Ffbb, ffBb, ffbb) can result for their offspring, as determined by a Punnett square.
Explanation:
The student's question pertains to the inheritance of two autosomal dominant traits: unattached earlobes and a cleft chin. When parents are heterozygous for both traits, the possible genotype combinations of their offspring can be determined using a Punnett square. Let's denote unattached earlobes with the dominant allele F and attached earlobes with the recessive allele f. Similarly, we'll denote a cleft chin with the dominant allele B and no cleft chin with the recessive allele b. Since the parents are heterozygous for both traits, their genotypes are Ff and Bb, respectively. When we create a Punnett square for these two traits, each parent contributes one allele for each trait, resulting in a 1:1:1:1 ratio in the offspring with the following genotype possibilities: FfBb, Ffbb, ffBb, and ffbb.
All cells have the same genetic information, but do not express the same genes. How is this possible?
A. The differences are due to gene expression, which can be turned on and off.
B. Genetic material in a muscle cell is completely different from genetic material in a skin cell.
C. Genetic material is the same in all cells in the human body, except for reproductive cells.
D. Differences are due to major changes in genetic information from cell to cell.
Could you please explain to me this concept please? Please support your answer
Different cells express different genes due to gene expression regulation, even though all cells have the same genetic information. This is achieved through the selective transcription and translation of DNA into proteins necessary for a cell's specific function.
All cells have the same genetic information, but do not express the same genes. This is possible because of gene expression, which can be turned on and off depending on the cell's function and needs. The correct answer to the question is option A: The differences are due to gene expression, which can be turned on and off.
Essentially, each somatic cell in the body contains the same DNA, but not every gene is expressed in every cell. Different cell types, such as those in the eye and liver, need different sets of proteins to perform their functions. Therefore, only a subset of proteins is expressed in a cell, requiring the DNA to be transcribed into RNA, which then gets translated into protein. The expression of specific genes is highly regulated, ensuring that only the necessary genes for a particular cell type are active at any given time. This differential gene expression is what leads to the various cell types in the body.
To further illustrate, cell differentiation is akin to actors reading from the same movie script but only performing their own parts. Cells contain the same full complement of DNA, but only 'read' the parts relevant to their function, resulting in unique genetic expression. This process of specialization makes different cell types distinct from one another despite having the same genetic information.
Sort the examples into proper mechanisms of reproductive isolation.
prezygotic postzygotic
the inability of red and purple
sea urchins to mate due to
gametic incompatibility
a sterile zonkey formed from
the mating of a donkey and
a zebra
different mating calls for two
different grasshopper species
the death of a zygote after
few weeks of formation
PRE
1.) the inability of red and purple
sea urchins to mate due to
gametic incompatibility
3.)different mating calls for two
different grasshopper species
POST
4.)the death of a zygote after
few weeks of formation
2.)a sterile zonkey formed from
the mating of a donkey and
a zebra
What is a possible effect of crossing animals that belong to different species?
Answer:
Most animals that are not part of the same species cannot mate and have fertile eggs/babies. However there is some cases where this can happen. Such as a raccoon and cat. It is rare but possible.
Explanation:
____ is a chemical that promotes seed dormancy and is also involved in opening and closing of stomata as leaves wilt
abscisic acid i am 100% sure
A spinal nerve is classified as motor or sensory, depending on the type of fibers it contains, true or false.
Why does water need a protein channel to move across the cell membrane?
A nurse is caring for a patient with bladder cancer. Which symptom should the nurse expect to find? Painless, intermittent, gross hematuria Presence of a palpable mass in the lower abdomen Burning sensation on urination Urgency, frequency, and dysuria Discharge from the urethra
The winds that move from cold upland areas into lower elevations under the influence of gravity are described as __________.
"clumping" or "clouding" in the mixture of the blood and the blood serum is caused by
The clumping or clouding of blood and blood serum is caused by the agglutination reaction, which happens when antibodies in the serum bind to antigens in the blood cells.
Explanation:Clumping, or clouding, in the mixture of blood and the blood serum is most commonly caused by a reaction known as agglutination. This reaction occurs when antibodies present in the blood serum interact with antigens found on the surface of blood cells. When an antibody finds its corresponding antigen, it attaches to it and triggers a response that ultimately results in the clumping or clouding of the blood.
For example, during a blood transfusion, if the recipient's blood type and the donor's blood type are not compatible, the antibodies in the recipient's blood can cause the incoming blood to clump or cloud, leading to a serious health risk.
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The correct answer is The clumping or clouding in the mixture of blood and blood serum is caused by the presence of agglutinins in the serum reacting with antigens on the red blood cells.
When blood is mixed with blood serum, certain reactions can occur that lead to clumping or clouding of the mixture. This phenomenon is typically observed in blood typing procedures, such as the ABO blood group system. The clumping or clouding is due to a specific immune reaction known as agglutination.
Agglutination occurs when agglutinins, which are antibodies present in the serum, recognize and bind to antigens on the surface of red blood cells (RBCs). Antigens are specific molecules or structures on the cell surface that can elicit an immune response. In the context of blood typing:
Agglutinin 'anti-A' is present in the serum of individuals with blood type B or O and reacts with the 'A' antigen found on the surface of type A red blood cells.Agglutinin 'anti-B' is present in the serum of individuals with blood type A or O and reacts with the 'B' antigen found on the surface of type B red blood cells.Individuals with blood type AB have no agglutinins in their serum because their blood contains both 'A' and 'B' antigens, and thus their immune system does not produce antibodies against these antigens.Individuals with blood type O have both 'anti-A' and 'anti-B' agglutinins in their serum because their blood lacks both 'A' and 'B' antigens.When the wrong type of blood is mixed with incompatible serum, the agglutinins in the serum will bind to the antigens on the red blood cells, causing them to clump together, which is visible as clumping or clouding. This reaction is a critical factor in blood transfusion compatibility and is the basis for determining a person's blood type and ensuring that transfused blood does not cause a dangerous immune reaction in the recipient.
The complete question is:
"clumping" or "clouding" in the mixture of the blood and the blood serum is caused by ________.
Most of the water taken up by a plant is _____. most of the water taken up by a plant is _____. used as a solvent lost during transpiration used as a hydrogen source in photosynthesis used to keep cells turgid
The correct option is A) i.e. used as a solvent lost during transpiration.
Most of the water taken up by a plant is lost during transpiration, which involves the evaporation of water from plant tissues through the stomata in the leaves.
While some water is used for other functions, transpiration accounts for the major portion of water consumption in plants.Transpiration causes a plant to lose the majority of the water it absorbs. This process involves the evaporation of water from plant tissues, primarily through small pores in the leaves known as stomata. During transpiration, water moves from the soil into the roots, through the plant, and eventually evaporates into the atmosphere, maintaining a continuous stream. While some water is used for photosynthesis, maintaining cell turgor, and transporting minerals, the majority is lost via transpiration.The process by which moisture moves from roots to tiny pores on the underside of leaves, where it transforms into vapor and is expelled into the atmosphere, is called transpiration. It is essentially a form of evaporation of water from plant surfaces. This process is crucial for plants as it helps cool them down, deliver nutrients to cells, and maintain turgor pressure.What is the function of the waxy,transparent top layer of leaves
It prevents water evaporation.
100% correct
The waxy, transparent top layer of leaves is known as cuticle. It is a non-cellular protective covering found outside the epidermis of many plants. The cuticle functions by acting as a water permeability barrier that prevents excess water loss from the body of plants through evaporation. It also protects plant tissues by preventing the entry of microorganisms and external water.
Identify the correct sequence of molecules, as a gene goes from coded information in the nucleus, to the product the cell wants to make. qwizlet
The answer is DNA...messenger RNA...transfer RNA...Protein. RNA polymerase is responsible for the development of RNA (later spliced into mRNA) from DNA. mRNA then forms a complex with ribosome and tRNA to translate the mRNA into a polypeptide/protein. This flow is referred to as the central dogma.
Answer:
DNA -> messenger RNA -> transfer RNA -> protein is the answer
Explanation:
In 2010, scientists excavated a skull fossil that provides evidence of a newly discovered species of big cat. based on the evidence, scientists hypothesize that big cats branched off from smaller wild cats about 6 million years ago. which of these resources did the scientists most likely rely on to form their hypothesis?
When using a compound light microscope with a 10x eyepiece and objectives of 5x, 10x, and 50x, what is the highest possible magnification for that microscope?
A.50x
B.60x
C.100x
D.500x
Kira is a hemophiliac. This means that she does not produce clotting factors. What aspect of the clotting process should she be worried about not functioning?
If 30% of a dna strand is composed of adenine bases, what percent of the strand is composed of guanine bases?
Coral bleaching, which causes high coral mortality, has been occurring widely in coral reefs. coral bleaching actually refers to the death of symbiotic dinoflagellates living within the corals. why does coral bleaching cause the corals to die?\
Answer:
Explanation:
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Which statement is true?
A.
Prokaryotic cells do not have a membrane.
B.
Eukaryotic cells have multiple membranes.
C.
Eukaryotic cells have one membrane.
D.
Prokaryotic cells have multiple membranes.