In soils with distinct soil horizons, the bottom zone is the..... a.) parent material b.) a horizon c.) b horizon d.) subsoil
The correct answer is option (a). Parent material
The soil horizon refers to distinct layers of the soils, which are parallel to one another, but have a different composition from the layer present above and below to it.
The soil horizon can be divided into four different layers. First one is organic layer, which is the topmost layer, below this layer second layer of topsoil is present. Below top soil, subsoil is present. Below subsoil, the bottom most horizon parent material is present.
Aerobic respiration happens in what cellular organelle?
Anaerobic respiration does not use _______ gas it happens in one process (after glycolysis) called __________________
What process was used to make beer?
What are the products of alcohol fermentation?
How independent assortment occurs in cells?
What will happen to an animal cell if placed in a hypotonic solution?
What effect will a virus in the lytic cycle have on an organism? A. It will have no direct effect on the organism. B. It will cause a disease in the organism. C. It will spread bacteria in the respiratory system. D. It will cause genetic mutations in sex cells.
The effect that a virus in the lytic cycle will have on an organism is that it will cause a disease in the organism.
WHAT IS LYTIC CYCLE?Lytic cycle is one of the two stages of infection of a virus in a host cell. The lytic cycle involves the bursting of the host cell to release new virions.
The virus infects a host cell and uses its replication mechanism to form new cells.
The virus causes diseases in the cell of the host organism.
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1. Which statement most accurately describes the process of respiration?
Select one:
a. It occurs only in plants during the daylight hours and usually involves the exchange of gases.
b. It occurs only in plants during the daylight hours and involves the taking in of preformed organic molecules.
c. It occurs continuously in the cells of all organisms and involves the synthesis of carbohydrate molecules.
d. It occurs continuously in the cells of all organisms and often involves an exchange of gases.
How does the structure of phylogeny charts explain homologous structures in organisms?
New species branch off ancestral species, so two species can have similarities in body structure.
All old species die off as soon as new species emerge, which explains why current species have traits of extinct species.
In different lineages of organisms, two organisms may have similar structures that evolved in different ways.
All organisms mutate their genome automatically when an environment changes, creating new traits and structures.
The structure of phylogeny charts explain homologous structures in organisms by all organisms mutate their genome automatically when an environment changes, creating new traits and structures.
What is phylogeny charts?The chart that tells about evolutionary relationship with organism or species.
The Phylogeny charts used by scientist to show the evolutionary path and connection among organisms.
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A macromolecul that contains carbon,hydrogen,oxygen,nitrogen which is used by the body for growth and repair
Answer:
Protein.
Explanation:
Biomolecules may be defined as the organic molecules that are present in the living organisms. Four important types of biomolecule are carbohydrates, proteins, lipids and nucleic acids.
Proteins are the polymers of the amino acids. The proteins monomer consists of hydrogen, carbon, oxygen and nitrogen. Proteins are important for the living organisms all enzymes, antibodies and clotting factors are made up of proteins. The proteins are important for the repair and the growth of the body.
Thus, the answer is proteins.
In humans, the allele for a widow’s peak is dominant to the allele for a straight hairline. In a family with three children, two of the children have a straight hairline and one child has a widow’s peak. Which of the following is possible?
a. Both parents are homozygous for a straight hairline.
b. Both parents are homozygous for a widow’s peak.
c. One parent is homozygous for a straight hairline, and the other is heterozygous.
d. One parent is homozygous for a widow’s peak, and the other is homozygous for a straight hairline. ...?
The correct answer is that one parent is homozygous for a straight hairline (ww) and the other parent is heterozygous (Ww), allowing for the possibility of having children with either a widow's peak or a straight hairline.
Explanation:In humans, the allele for a widow's peak is dominant to the allele for a straight hairline. If two of the children have a straight hairline and one child has a widow's peak, it's possible that each parent carried at least one copy of the allele for a straight hairline. Let's denote the dominant allele for a widow's peak as 'W' and the recessive allele for a straight hairline as 'w'.
Option a, both parents being homozygous for a straight hairline (ww), cannot be true because they wouldn't have a child with a widow's peak. Option b, both parents being homozygous for a widow's peak (WW), is not possible because they would not be able to have a child with a straight hairline. Option d, one parent being homozygous for a widow's peak and the other being homozygous for a straight hairline, also cannot be true because all children would have a widow's peak. Therefore, option c, one parent being homozygous for a straight hairline (ww) and the other parent being heterozygous (Ww), is possible. This would allow for a 50% chance of having a child with a straight hairline and a 50% chance of having a child with a widow's peak.
Evolutionary theories are supported by evidence of
This is a biological process that requires oxygen.
Aerobic respiration is the biological process that requires oxygen to produce energy (in the form of ATP), carbon dioxide and water. Involving the transportation of oxygen via the blood to tissues, this process makes up approximately 95% of our normal energy production. If oxygen was not present in the atmosphere, life would have to rely on different processes such as anaerobic respiration or fermentation.
Explanation:The biological process that requires oxygen is known as aerobic respiration. This process breaks down glucose or other nutrients in the presence of oxygen (O2) to produce carbon dioxide, water, and ATP - the main source of energy for cells. Approximately 95 percent of the ATP required for resting or moderately active muscles comes from aerobic respiration, taking place in the energy factories of cells, the mitochondria.
During this process, oxygen passes from the lungs into the blood, where it combines with hemoglobin to form oxyhemoglobin. In this state, it's transported to various tissues where it's used for producing energy. Ultimately, the process outputs the waste products carbon dioxide and water, which are transported back to the lungs to be exhaled.
Without the oxygen present in our atmosphere, life as we know it would rely on anaerobic respiration or fermentation. This is because, evolutionarily, some prokaryotes began to use sunlight to photosynthesize, using water as the hydrogen source and releasing O2 as a 'waste' product - in turn allowing for aerobic respiration.
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Genetic variations may result from which of the following? CHOOSE ALL THAT APPLY.
Question 1 options:
Genetic recombination during meiosis.
Errors occuring during DNA replication.
Mitosis producing 2 identical daughter cells.
Cell differentiation, which leads to genetic variation.
Mutations caused by environmental factors.
Saltwater fish constantly drink water but still excrete concentrated urine to compensate for the water loss. They also have gills to help excrete excess salts. Conversely, freshwater fish absorb salt from their surroundings using their gills and their bodies reabsorb salt from their urine. This describes how salt- and freshwater fish _______.
a.
use their gills to drink
b.
keep the salinity levels even in their aquatic environments
c.
have adapted to deal with osmosis
d.
have evolved behavior patterns to match their physiology
Answer:
c
Explanation:
it is c
describe a possible application for stem cells
Stem cells are the specialized cells of the body which have the potency to undergo division and form any other cell with specialized functions. These can be used in different therapies, for cell replacement.
What are Stem cells?Stem cells are the body's raw materials. These cells can divide and generate all other cells of the body with specialized functions. Under the right conditions in the body or a laboratory, stem cells divide to form more cells called daughter cells.
Stem cells have two unique properties that enable them to divide and replace the specialized cells. These can divide over and over again to produce new cells. As they divide, they can change into the other types of cells that make up the body.
In stem cell transplants, stem cells can replace the damaged cells by chemotherapy or disease or serve as a way for the donor's immune system to fight some types of cancer and other diseases, such as leukemia, lymphoma, neuroblastoma and multiple myeloma. These transplants can use adult stem cells or umbilical cord blood for replacement of cells.
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Grasses → mice → cat → coyote a natural disaster of a fire has occurred what could happen to this food chain?
A pea plant that has round seeds has the genotype Rr. It crossed with a pea plant that has wrinkled seeds and the genotype rr. What is the probability that the offspring will have wrinkled seeds
Answer:
1/2 or 50%
Explanation:
This question involves a single gene coding for seed shape in pea plants. According to the question, the round allele (R) is dominant over the wrinkled allele (r) i.e. the round allele will mask the phenotypic expression of the wrinkled allele in a heterozygous state (Rr).
According to the question, a pea plant that is heterozygous for seed shape (Rr) is crossed with a homozygous recessive pea plant (rr). The cross will produce four possible offsprings with the genotypes: Rr and rr.
Rr genotype will be phenotypically round-seeded while rr will be phenotypically wrinkled.
Hence, the probability that an offspring with wrinkled seeds will be produced is 1/2 or 50%
The largest pod is a type i. (
a. true (
b. false
what is the purpose of the cell organelles?
The allele for a widow's peak has complete dominance over the allele for a straight hairline (w). what is the probability of two parents heterogeneous for a widow's peak (ww) having an offspring without a widow's peak? 25 percent 0 percent 50 percent 75 percent
Answer: The correct and is A or 25 Percent
explain importance of osmosis in the production of urine in the kidney nephron
Does mitosis more closely resemble meiosis 1 or meiosis 11? Explain your answer.
The main differences between mitosis and meiosis occur in meiosis I, where homologous chromosome pairs undergo crossover and line up randomly. Meiosis I is a reduction division, reducing the ploidy level. Meiosis II is more similar to mitosis.
Explanation:The main differences between mitosis and meiosis occur in meiosis I. In meiosis I, homologous chromosome pairs are bound together, undergo crossover, and line up randomly along the metaphase plate. When the homologs separate, the ploidy level is reduced from two to one. For this reason, meiosis I is referred to as a reduction division. There is no such reduction in ploidy level during mitosis.
Meiosis II is much more similar to mitosis. Duplicated chromosomes (only one set of them) line up on the metaphase plate and sister chromatids are separated to opposite poles.
In the hills of north carolina, several different species of wrens live in one large pine tree. this is possible because the wrens
Answer:
b)
Explanation:
True false: sister chromatids are created for each of the multiple chromosomes found in the cell's nucleus.
Describe in words what occurs during the process represented by the photosynthesis equation. Include the importance of sunlight
The photosynthesis equation represents the process. The importance of sunlight is it converts water and carbon dioxide into glucose.
What is photosynthesis?Plants use their leaves to trap light energy during photosynthesis. Plants use the sun's energy to convert water and carbon dioxide into glucose, a sugar. Plants use glucose for energy and to generate other compounds such as cellulose and starch.
Photosynthesis converts sunlight energy into high-energy sugars and oxygen by converting water and carbon dioxide (reactants). Plants use photosynthesis to trap light from the sun and convert it into energy.
Therefore, the photosynthesis equation represents the process. Sunlight is important because it transforms water and carbon dioxide into glucose.
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What are the five categories of adaptations?
The five categories of the adaptations are migration, hibernation, dormancy, camouflage, and estivation. The migration can be defined as the phenomenon of the movement of the animals from one region to another in order for their survival. Hibernation can be defined as the inactive state of the animals, in which they enter to escape from the cold weather. Dormancy is also a state of inactivity which is adapted by animals in order to escape harsh environmental conditions, such as lack of water. Camouflage can be defined as the ability of the animals to blend in with their surrounding environment, in order to escape predators. Estivation can be defined as dormant state adapted by animals to escape the harsh summer weather.
The five categories of adaptation are migration, hibernation, dormancy, camouflage, and estivation.
What is adaptation?Adaptation is the tendency of organisms to change their characteristics according to the environment or their surroundings. These changes are necessary for better survival.
Migration is changing the place temporarily or permanently to places for better conditions like temperature, or area. Like birds in winter, move to high temperatures areas.
Hibernation is slowing down your life activities to save energy for the body. Camouflage is adapting or changing its body structure to save them from predators. Estivation and dormancy are also adaptations of animals.
Thus, migration, hibernation, dormancy, camouflage, and estivation are the five categories of adaptation.
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plants are classified as
when during the cell cycle do chromosomes first become visible?
Reproductive cells are created by _____.
A. mitosis
B. meiosis
C. cytokinesis
What is the function of osteocytes?
Which of the following statements is true?
Tsunamis are caused by seismic waves.
Earthquakes create mountain chains.
Erosion is always a destructive force.
A gradual cooling of the interior of a volcano causes volcanic eruptions.