In Mendelian inheritance, why are only two phenotypes possible?
Answer:
Each characteristic Mendel investigated was controlled by one gene that had two possible alleles, one of which was completely dominant to the other. This resulted in just two possible phenotypes for each characteristic.
Explanation:
ur welcome !
The soil in an ecosystem has high levels of nitrogen due to the burning of fossil fuels in a nearby industrial area. Scientists predict
that these high nitrogen levels will cause a decrease in the rate decomposition in the ecosystem over time. Why will this most
likely cause a decrease in the carrying capacity of the ecosystem?
Answer:
The soil in an ecosystem has high levels of nitrogen due to the burning of fossil fuels in a nearby industrial area. Scientists predict that this high nitrogen...
Answer:b. The ecosystem will be unable to efficiently recycle the remains of dead organisms
Explanation:
I got it right
The cell membrane is selectively permeable, which means __________.
Answer:
Water can pass through it
Explanation:
There is no explaination. thats the answer
How is the phosphorus cycle different from the oxygen, nitrogen, and carbon cycles?
a.
It occurs at the fastest rate.
b.
It is not essential to life.
c.
It does not occur naturally.
d.
It does not involve the atmosphere.
Answer:
The cycle only involves the lithosphere, hydrosphere, and biosphere, with no role in the atmosphere. The reason the atmosphere is not involved in that at the natural temperature and pressure of the environment, phosphorus and its compounds are usually in solid or ionic (usually phosphate ion) form. It is also a very slow nutrient cycle, with a major source of the nutrient being determined by tectonic activity that upwells the nutrients from deep in their earth’s core through volcanic activity.
Explanation:
is this correct ? T-T
Answer:
Not exactly. Here are my corrections:
Somatic cells undergo mitosisGerm cells undergo meiosisExplanation:
The rest of the table is correct! Great job
Having an alteration of generation life cycle means that….
Answer: the ecosystem is balanced.
Explanation:
Multiple meanings the word matrix can be used to describe things shaped in a pattern of lines and spaces. How does this relate to a mitochondrion?
The mitochondrial matrix is the fluid inside the mitochondria. It is required during cellular respiration.
What are mitochondria?Mitochondria are eukaryotic organelles that can be considered the energy factories of this type of cell.
Mitochondria are able to synthesize ATP (the energy coin of the cell) by a process called cellular respiration.
The mitochondrial matrix is a fluid inside the mitochondria which is required to create a proton gradient during cellular respiration.
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The term matrix in relation to a mitochondrion states that a fluid or jelly-like substance which is present inside the mitochondria and plays a vital role during cellular respiration.
What do you mean by Mitochondria?Mitochondria may be defined as a double membrane-bound cell organelle that is known as the powerhouse of the cell. This is because the energy required for various activities is released by mitochondria in the form of ATP.
The matrix of the mitochondria consists of small-sized ribosomes and DNA, which possess genetic information.
The mitochondrial matrix is the site of metabolic activities like the TCA cycle which is responsible for the conversion of pyruvate and fatty acids to acetyl-CoA.
Therefore, the term matrix in relation to a mitochondrion states that a fluid or jelly-like substance which is present inside the mitochondria and plays a vital role during cellular respiration.
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Choose all characteristics of prostaglandins.
a) They are usually present in large amounts.
b) They are not stored in cells and are synthesized just before they are released.
c) They are rapidly inactivated after their release.
d) They travel in the bloodstream to their target cells.
e) They are paracrine substances.
Prostaglandins are not stored in cells and are synthesized just before they are released, rapidly inactivated after their release and they are paracrine substances (Options b, c and e).
Whta are prostaglandins?Prostaglandins are chemical substances that act as hormones by affecting surrounding cells in a tissue.
These substances (prostaglandins) are not secreted by specific glandular organs as other hormones.
Prostaglandins are substances that have fundamental functions for the normal functioning of the body.
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Two different people had their DNA tested because they were suspects in an investigation. The results came back stating that their DNA was exactly the same. What can MOST likely be concluded based on these results
What causes movement of water through xylem
which of the strands below is NOT a strand of rna?
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OptionB. ATGCTTGCAGTCCATGAC✓
It is the only strand that includes "T" or thymine which is only found in DNA .[tex]\purple{\rule{15mm}{2.9pt}} \red{\rule18mm{2.5pt}} \orange{ \rule18mm{2.5pt}}[/tex]
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What type of cell does not have membrane-bound organelles?
Options:-
Prokaryotic
Eukaryotic
Somatic
Plant
Answer:
Prokaryotic cells
Explanation:
Prokaryotic cells are surrounded by a plasma membrane, but they have no internal membrane-bound organelles within their cytoplasm.
Answer:
a) Prokaryotic
Explanation:
Prokaryotic cells do not have any membrane-bound organelles. Hence, option (a) is the correct answer.
33. Why is it beneficial that plants have two kinds of chlorophyll (a and b)?
Answer:
chlorophyll in plants complement each other in absorbing sunlight.
Explanation:
light with a wavelength of 460 nm isn't always substantially absorbed by means of chlorophyll a, but will as a substitute be captured through chlorophyll b, which absorbs strongly at that wavelength. the two forms of chlorophyll in flowers
It is beneficial to have two kinds of chlorophyll in photosynthetic plants because both types of chlorophyll work complementary to each other and allow maximum absorption of light in the blue to red spectrum.
What do you mean by Chlorophyll?Chlorophyll may be defined as the green-colored pigment in plants, algae, and cyanobacteria that is essential for photosynthesis.
Chlorophyll A absorbs the light of wavelength 400 to 450nm with maximum intensity and 650 to 700nm with minimum intensity.
Chlorophyll B absorbs the light of wavelength 450 to 500nm with maximum intensity and 600 to 650nm with minimum intensity.
Therefore, it is beneficial to have two kinds of chlorophyll in photosynthetic plants because both types of chlorophyll work complementary to each other and allow maximum absorption of light in the blue to red spectrum.
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In a bacterium that possesses antibiotic resistance and the potential to persist through very adverse conditions, such as freezing, drying, or high temperatures, dna should be located within, or be part of, which structures?.
In a bacteria that possesses antibiotic resistance and the potential to persist through very adverse conditions, the DNA should be located in the plasmid.
What is a plasmid?Plasmid is a small, extrachromosomal DNA molecule within a cell that is independent of the chromosomal DNA and can replicate on its own.
The plasmid usually contains extra genes that codes for resistance and other specific traits.
Therefore, it can be said that in a bacteria that possesses antibiotic resistance and the potential to persist through very adverse conditions, the DNA should be located in the plasmid.
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The bulk of each tooth consists of a mineralized matrix similar to that of bone called:.
Plants, or autotrophs, do which of the following processes? (Select all.)
Glycolysis
Photosynthesis
Cell Respiration
None of the above
Answer:
Glycolysis, photosynthesis, and cellular respiration
Explanation:
Glycolysis takes place in the cytoplasm of animal and plant cells, whereas the subsequent steps of cellular respiration take place in the mitochondria.Plants have mitochondria and can perform cellular respiration. When would plants need to release energy by cellular respiration? Plants would release energy through cellular respiration in times when sunlight is not present.A community of kelp, a type of seaweed, grows into an undersea forest. Many fish live in the kelp forest. An oil spill occurs and kills many of the fish. What will most likely happen to the kelp forest?.
Answer:
Population will increase
Explanation:
Since the oil spill the fish, the kelp has a reduced number of natural predators
Which best describes how human circulatory and respiratory systems interact
Answer:
When a person inhales, the lungs expand and fill with fresh air. The respiratory system interacts with the circulatory system to transfer oxygen from fresh air to red blood cells in the lung arteries while also releasing carbon dioxide from the blood into the air in the lungs. When a person exhales, this used air leaves the body.
Explanation:
What is a chromosome like in a city?
define biomagnification
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Increase of toxic materials in organisms from lower tropical level to higher tropical level in a food web is known as Biomagnification.
Siamese cats and Himalayan rabbits have light-colored bodies but darker-colored paws, ears, and tail due to an enzyme whose activity varies with temperature. This is an example of ______.
The special features in the Siamese cats and Himalayan rabbits is an example of adaptation.
What is adaptation?Adaptation refers to the special features or structures that an organism possesses which makes it better suited to survive and reproduce in its environment.
Adaptations helps an organism to:
find foodfind matesavoid predators survive extreme climatic conditionsThe features in the Siamese cats and Himalayan rabbits due to enzyme activity that varies with temperature is an example of adaption.
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_____ contain similar genes but often different alleles. After DNA replication, ______ contain identical alleles combinations.
Chromosomes contain similar genes but often different alleles. After DNA replication, Homologous Chromosomes contain identical alleles combinations.
What is Chromosome?Chromosomes contains DNA ( deoxyribonucleic acid) which makes up the gene or genetic constituents of an individual.
The combination of alleles of a gene makeup the genotype.
Therefore, Chromosomes contain similar genes but often different alleles. After DNA replication, Homologous Chromosomes contain identical alleles combinations.
Learn more on chromosomes here,
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The presence of calcium in the sarcoplasm is directly responsible for __________. Multiple choice 1 decreasing the length of the myosin myofilament energizing the myosin heads degrading the actin binding sites on the myosin the movement of actin towards the M line exposing the binding sites on actin 2. Rigor mortis occurs after death because __________. Multiple choice 2 actin binding sites become permanently blocked so that crossbridge formation cannot occur no calcium is present to bind to the regulatory protein tropomyosin detachment of crossbridges does not occur due to the lack of ATP the power stroke becomes stronger after death the muscle fibers release sodium into the extracellular fluid
This is defined as the the cytoplasm of striated muscle cells in living organisms .When calcium is present, the binding sites on actin are exposed.
Rigor mortis occurs after death and involves stiffening of the muscle tissue because detachment of cross bridges does not occur due to the lack of ATP.
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Which system of the body would be most directly affected if excess cholesterol led to plaque deposits in arteries?
circulatory system
immune system
endocrine system
respiratory system
Answer:
endocrine system
Explanation:
it would stop circulating hormones through they system
Can a cell be an organism on its own
nah cant
Explanation:
cuz and organisms definition is:
an individual animal, plant, or single-celled life form.
SINGLE-celled life form meaning all the cells are the same
hope this helps :D
How the circulatory and respiratory systems work together to deliver oxygen to the body’s tissues
Answer:
The circulatory system circulates the blood to the whole body.
The respiratory system brings oxygen to the blood, and the circulatory system circulates the oxygenated blood to the cells.
Explanation:
Hi, can you please answer these questions?
Which of the following triggers for asthma is most commonly found in the home?
A.] Dust mites
B.] Flower pollen
C.] Sawdust
D.] Cold air
Which of the following cannot be prevented by healthy living activities?
A.] Influenza
B.] Iron-deficiency anemia
C.] Sickle cell anemia
D.] Chronic heart disease
I kindly ask that you please answer these last 2 questions, ty
Answer:
1. is A
2. is A
Explanation:
anyone can get the flu no matter how healthy you are and dust mites are most common
What is the basic structure of a virus?
DNA or RNA surrounded by a cell wall.
O A capsid surrounded by a protein coat.
A capsid surrounded by an envelope.
DNA or RNA surrounded by a cell membrane
Answer: A capsid surrounded by an envelope.
Explanation:
6) the first plants and animals to inhabit a newly available ecosystem are the
o
lichens
o pioneer species
o bacteria
ο ο ο ο
olegumes
climax community
which are false ;-;
Answer:
an organisms phenotype is only made up of genes, the last bottom one
Explanation: