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Related Questions
Human Immunodeficiency Virus (HIV) is a virus that infects (and destroys) Helper T Cells. As a result, people who are HIV+ generally have a low number of these T Cells. How would the dramatic decrease in Helper T Cells caused by HIV affect a person’s immune response? Be specific using details from what you learned about the immune response.
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Answer:
HIV invades various immune cells (e.g., CD4+ T cells and monocytes) resulting in a decline in CD4+ T cell numbers below the critical level, and loss of cell-mediated immunity − therefore, the body becomes progressively more susceptible to opportunistic infections and cancer.
HIV infects and deletes CD4+ T cells that normally coordinate the adaptive T- and B-cell response to defend against intracellular pathogens. The immune defect is immediate and profound: At the time of acute infection with an AIDS virus, typically more than half of the gut-associated CD4+ T cells are depleted, leaving a damaged immune system to contend with a life-long infection.
Which of the following is not an appropriate unit for momentum?
A. g • cm/min
B. g • m/S
C. km • m/S
D. kg • m/hr
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Answer:
Option C us correct.
km • m/S
Explanation:
This is because momentum is result of mass and velocity of an object. Momentum is a vector quantity that is it has magnitude and it's direction is in form of three dimensional.
From the option C, kilometer there is not a unit for mass or velocity it it is a unit for distance, therefore it is incorrect.
what controls the passage of materials into and out of a cell
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Answer:
The cell membrane.
Explanation:
The cacti in this environment survive by spreading out and growing apart from one another. Why do the cacti grow this way?
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Answer:
b b b b b b b b
Explanation:
Answer:
B
Explanation:
Can someone give me the answer for both questions please:)
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Answer:
The answers are:
C danimeletion
B dna - rna - amino acid - protein - genetic expression
HELP I WILL GIVE BRAINLIEST
The main point of this page is..???
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Answer:
The Main point of the page is to explain Celestial Objects to audiences who didn't know before.
Explanation:
It's a page to deeper to understanding of Celestial Objects or floating rocks :)
1. What is the gradual change in populations over time?
2. What is the idea that species originate in small gradual steps over time?
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1. Gradualism
2. evolution
Answer:1.Gradualism is an evolutionary model that refers to the tiny variations in an organism or in society that happen over time to make a better fit for animals and humans in their environment. These variations allow them to survive and thrive, resulting in a slow and consistent process of change in the whole population.
2.Phyletic gradualism is a model of evolution which theorizes that most speciation is slow, uniform and gradual. When evolution occurs in this mode, it is usually by the steady transformation of a whole species into a new one (through a process called anagenesis).
Explanation:
Complete the chart. Thymine _____, Guanine ____.
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Answer: 27, 23
Explanation: Thymine goes with Adenine and together they equal 50 so Thymine would be 27 because Adenine is 23. Same with Cytosine and Guanine. They go together and equal 50 so Guanine would be 23 because Cytosine is 27. Hope this helps!
Viruses are able to infect cells because they share a common genetic code and are able to use host cell enzymes to carry out protein synthesis. There are some structures which are
unique to viruses and not found in cells. These include which of the following:
l. Protein capsid
II. Nucleic acids
III. Cell wall
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Answer:
Protein capsid are unique to viruses.
Explanation:
Answer:
1 only
Explanation:
Which of the following increases transpiration?
A air around the leaf with high humidity.
B air molecules around the leaf with kess kinetic energy.
C an obsence of light falling on the leaf.
D water molecules in the leaf with more kinetic energy.
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The immune response consists of different components playing their role for a common goal: to rid the body of a pathogen. Create an analogy that helps explain the roles of the responses of the immune system and describe the relationship between the responses.
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Answer:
In a primary immune response, naive B cells are stimulated by antigen, become activated, and differentiate into antibody-secreting cells that produce antibodies specific for the eliciting antigen.
A secondary immune response is elicited when the same antigen stimulates memory B cells, leading to the production of greater quantities of specific antibodies that are produced in the primary response
Answer:
In a primary immune response, naïve B cells are stimulated by antigen, become activated, and differentiate into antibody-secreting cells that produce antibodies specific for the eliciting antigen.
A secondary immune response is elicited when the same antigen stimulates memory B cells, leading to the production of greater quantities of specific antibodies that are produced in the primary response.