1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ad libitum [116K]
4 years ago
5

Which statement best describes the human immunodeficiency virus (HIV) that has been shown to cause AIDS in humans?

Biology
1 answer:
Shkiper50 [21]4 years ago
4 0
<span>The first stage of HIV infection is known as the acute stage. The body responds by producing HIV antibodies and killer T- cells which are special lymphocytes that seek out and destroy invading pathogens such as viruses and bacteria. Two to four weeks after infection, the immune system launches an attack against HIV using these antibodies and killer T-cells, significantly reducing HIV level on blood. A percentage of the viruses however escapes this onslaught by hiding in other cells and continue to multiply.</span>
You might be interested in
How can microorganisms affect us?
butalik [34]

Answer:

They can invade our bodies and make us ill. They can cause infectious diseases like the flu or measles. Hope this helped and if it did then please mark brainliest. Have a nice day.

7 0
3 years ago
g - Identify the molecules into three categories: molecules brought in and used in three turns of the Calvin cycle, molecules pr
sashaice [31]

Answer:

-molecules brought in and used in three turns of the Calvin cycle: Carbon dioxide (CO2)

-molecules produced during three turns of the Calvin cycle that leave the cycle: Glyceraldehyde-3-phosphate (G3P)

-molecules used and regenerated within the Calvin cycle during three turns: Ribulose-1,5-bisphosphate (RUBP)

Explanation:

Calvin cycle is the second phase of photosynthesis, also called the light independent phase. This phase occurs in there major stages namely:

1). Carbon fixation: A molecule of carbon dioxide (CO2), which enters through the stomata of the leaves, is fixed in THREE TURNS i.e. 3CO2 by reacting with a CO2 acceptor called ribulosebiphosphate (RUBP) as catalyzed by RUBISCO. This reaction forms an unstable 6-carbon compound that breaks into 2 molecules of 3-phosphoglycerate (PGA).

2) Reduction: In this stage, the PGA is reduced and phosphorylated by NADPH and ATP respectively to form 6 Glyceraldehyde-3-phosphate (G3P) molecules. One of these G3P molecules leaves the cycle during its THREE TURNS to be used to produce a molecule of glucose. The remaining 5 G3P molecules is used for the third stage.

3). Regeneration: In this stage, the RUBP (CO2 acceptor) is regenerated in THREE TURNS by rearranging the 5 G3P molecules to form 3 RUBP molecules. That is, 3 RUBP to accept 3CO2.

Note: The emphasized THREE TURNS is what must occur in order for one G3P to leave the cycle.

3 0
4 years ago
The chart below shows the major types of minerals mined in the United States and Australia.
Masteriza [31]
It’s 78% of the major types of minerals I hope this helps
8 0
3 years ago
Which phrase defines a community?
Mamont248 [21]

Answer:

Which phrase defines a community?

<u>group of the same species that live together</u>

Explanation:

as community means where same character animals used to live

8 0
3 years ago
Why is it important for scientists to study the causes of cancer as well as develop new treatments for cancer
Arlecino [84]

Cancer kills by invading key organs (like the intestines, lungs, brain, liver, and kidneys) and interfering with body functions that are necessary to live. Untreated cancer commonly causes death. ... Even when it can't cure the cancer, treatment can often help people live longer.

3 0
3 years ago
Other questions:
  • What is the density of mercury that has a mass of 39.6 g and a volume of 9.00 cm3?
    8·1 answer
  • Compared to continental glaciers, alpine glaciers are _____?
    11·1 answer
  • **Science**
    8·2 answers
  • What gives food to body cells?:<br> blood<br> oxygen<br> other body cells<br> carbon dioxide
    12·1 answer
  • A _______ is a change in genetic material.
    5·1 answer
  • Which process can be primarily affected by gallbladder disease?
    6·1 answer
  • Petalos de una flor cayendo estan ejerciendo fuerza de gravedad​
    8·1 answer
  • Add the corresponding RNA base pairs to make a mRNA strand given the following DNA segment. (1)
    15·1 answer
  • How many hours of nighttime will people in Syracuse experience on march 21
    5·1 answer
  • _____ if this is too wet or compacted, there is less space for air. Root s also respirate so this can reduce the amount of oxyge
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!