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

Answers

Answer 1

Answer: 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.

Related Questions

Which statement is true according to the quantum model of the atom?When an electron drops down from a high energy level to a lower one, light energy is emitted. When an electron jumps up from a low energy level to a higher one, light energy is emitted. Every orbit around the nucleus of an atom is the same energy level. After they emit light, electrons are sucked into the nucleus of the atom.
Which of the following best describes the structure of a biological membrane? ? A. two layers of phospholipids (with opposite orientations of the phospholipids in each layer) with each layer covered on the outside with proteins B. a fluid structure in which phospholipids and proteins move freely between sides of the membrane C. a mixture of covalently linked phospholipids and proteins...
What is the best description for where the exosphere is located?
Read the following statements. In maintaining homeostasis, what is the correct order in which they occur? 1) The liver removes glucose from the blood. 2) As the body uses glucose for energy, the liver releases stored glucose into the blood. 3) The body absorbs food molecules after eating. 4) The levels of glucose in the blood rise. A. 1,2,3,4 B. 2,4,1,3 C. 3,4,1,2 D. 4,1,3,2
What is Amber made up of?

The primary organs of excretion are theA. heart and lungs.
B. lungs and kidneys.
C. kidneys and liver.
D. liver and pancreas.

Answers

the primary organs of excretion are the D. liver and pancreas

The answer is B. Lungs and kidneys

Which of the following would be an example of gene therapy technology?

Answers

Answer:

Which of the following would be an example of gene therapy technology? Development of a nasal spray that contains copies of the normal gene that is defective in persons with cystic fibrosis. ... Once a genetic disorder is diagnosed____ can be used as a possible treatment.

Explanation:

During cellular respiration, every living thing in this food web uses ______ gas and releases ______ back into the environment. A. carbon dioxide: oxygen
B. oxygen: carbon dioxide
C. carbon dioxide: hydrogen
D. carbon dioxide: water vapor

Answers

During cellular respiration, every living thing in this food web uses B. oxygen gas and releases carbon dioxide back into the environment.
Plants are the only living things that do quite the opposite.

B. Oxygen; carbon dioxide. Animals breathe in oxygen and release carbon dioxide.

Which one is not respiration?

Answers

Answer:

The correct answer is B) Formation of glucose.

Explanation:

The formation of glucose, is not a part of respiration. Glucose formation, is a separate metabolic pathway that occurs primarily in the liver and kidneys. It involves the synthesis of glucose from non-carbohydrate sources, such as amino acids or glycerol, rather than the breakdown of glucose.

To summarize, respiration includes the breakdown of glucose, release of energy, and exchange of gases (such as oxygen and carbon dioxide). However, the formation of glucose is not a part of respiration.

All of the flower mechanisms would help prevent pollination by a foreign species except __________.

Answers

The given question is incomplete. The complete question is:

All of the flower mechanisms would help prevent pollination by a foreign species except __________.

A. A pollen tube grows in the style of its own species.

B. The stigma is sticky mainly to its own species of pollen.

C. The timing of flowering keeps pollinators moving among a limited number of species.

D. Flowers attract a small number of specialized pollinators, and therefore pollen is not spread equally to all available species of flowers.

E. Flowers of different species are the same color and attract similar pollinators.

Answer:

E. Flowers of different species are the same color and attract similar pollinators.

Explanation:

Plants of different species develop various morphological, physiological and behavioral strategies to ensure that the flowers of one species are not pollinated by pollens from any other species. One such structural adaptation is the production of flowers of a different color, size and shape.

These structural distinctions allow specific pollinators to visit the flowers of the particular species only. It ensures pollens from a different plant species do not land on the flowers of some other species. Production of flowers of the same color by different plant species would attract same pollinators and may result in pollination by a foreign species.

Which branch of Earth science includes the study of the stars?

Answers

That would be astronomy.

Other Questions

What have humans done to make lands with harsh climates more comfortable or, at least, livable?

When an invasive species is introduced into a new habitat where it has no natural predators, it can quickly populate. Which best predicts the effect this will have on the native species of the habitat?A. The native species will compete for resources in the habitat. B. The native species will thrive in the habitat. C. The native species will remove all of the resources in the habitat. D. The native species will destroy the habitat.

The significant effect of the Greco-Persian Wars. A. The Persian victory meant a rapid end to the Golden Age of peace, prosperity, arts, and culture that had lasted for nearly 100 years in Athens. B. The Greeks and Persians agreed to jointly rule over a single country containing the territories of both civilizations. C. The Greek victory allowed Alexander the Great to conquer the weakened Persian Empire soon after, ushering in the Hellenistic era. D. Athens emerged as the most powerful of the victorious Greek city-states, leading to a Golden Age of peace, prosperity, and cu

What are the spiral arms of the Milky Way made of? A. Older stars and comets B. Variable stars C. Asteroids and comets D. Younger stars and gaseous nebulae