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

Answers

Answer 1

Answer:

Over the time, HIV or human immunodeficiency is a lentivirus under the retrovirus subgroup has been causing HIV infections and AIDS or acquired immunodeficiency syndrome in humans. This virus destroys the white blood cells or the CD4+ cells to be specific which is crucial in the human immune systems.

The person infected then is less equipped to fight infections or diseases which will then develop into AIDS.

Related Questions

Example of inborn behavior
What created the abundant agriculture in the Napa Valley of California?A:oceanic-continental convergenceB: an earthquakeC: a tsunamiD:continental-continental convergence
Whta organism doesnt grow or reproduce and is not made of cells
What excess from the body does respiration eliminate? a. pleura b. oxygen c. carbon dioxide d. alveoli
Which one of the following discoveries involving DNA happened first?

If a moon were discovered to be at 1.5AU from the sun, it would be how far from the sun in kilometers? A. 22,500km
B.225,000km
C.22,500,000km
D.225,000,000km

Answers

The answer is (D.) 225, 000, 000 km

AU means astronomical unit. It is used by the astronomers to measure large distances in the Solar System. 1 AU is the average distance from Sun to Earth which is 149, 598, 000 km.

So to get the km value of 1.5 AU.

1.5 x 149, 598, 000 = 224, 397, 000

Round off to 225, 000, 000

Answer: D. 225,000,000km

Explanation:

An Astronomical Unit is the average distance between the Earth and the Sun. It is a unit of length which is used to measure distances in our galaxy.

1 astronomical unit is approximately equal to 150 million kilometers. 1 million is $10^6$ .

Thus 1 Astronomical unit (AU) is equal to 150 million km or $150* 10^6km$

So 1.5 Astronomical unit (AU)= $(150* 10^6)/(1)* 1.5=225* 10^6km=225000000km$

Thus correct option is D.

Gene is investigating what makes bread moldy. He put two identical slices of bread on separate plates. He made one slice moist and kept the other slice dry. He left the uncovered plates on a table for 2 hours. Then, he sealed them in plastic bags and put them in a dark, warm place. He looked at them each day for five days. After five days, he observed that 50 percent of the moist slice was moldy, and none of the dry slice was moldy. If Gene observed the slices for three more days, what would he most likely observe?

Answers

The answer is: There will be more mold on the moist slice and still none of the dry slice.

Molds belong to the kingdom Fungi. They are multicellular fungi consisting of multicellular filaments (hyphae). For growth, all molds need moist surface. This is the reason why in Gene's experiment, the only moist slice of bread was moldy. They have short life cycle, so 5 days were enough for molds to cover 50% of moist slice. Extended period of time will allow molds to spread more through moist surface if the surface remain moist.

What two components are often found as part of an enzyme?

Answers

Two components that are very common and often found are:
1. Simple Enzymes which are called like this cause usually are composed of proteins. It is peptide bonds that linked the amino acids
2. Conjugated Enzymes. They have two parts. The protein and non protein portion.
Hope this helps you greatly

The cytoplasm in a cell carries out a function similair to which human system

Answers

Cytoplasm holds all the organells in place
Fat does the same thing but thoughout the human body

15 POINT AWARD!! <3

Why are the gas planets also known as Jovian planets? :))

Answers

Answer: because they're bigger planets

Explanation:

They have a larger mass so therefore they're called jovian GIANTS

The fight-or-flight response in humans is activated by epinephrine, a hormone secreted by the _____ glands.pituitary
thyroid
parathyroid
adrenal

Answers

The correct answer is adrenal

Adrenal glands are also called suprarenal glands which are located on the kidneys. They produce various hormones including epinephrine (adrenaline). Adrenaline is secreted when a person is under a fight-or-flight. This hormone quickly responds to the emergent situation or threat by increasing heart rate, slowing blood flow to muscle cells and changes other autonomic nervous functions, which gives energy and strength to fight any emergency.

The sympathetic nervous system. The hypothalamus, in close association with the limbic system of the brain. The two main chemicals invoved here are the neurotransmitter "norepinephrine" (noradrenaline) and the hormone "epinephrine" (adrenaline).
So I would say D

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Choose the best newspaper headline that employs a figurative sound device.A. "Eat More Protein," Doctors Say B. Think You Get Enough Protein? C. Put Your Priority on Protein D. Why Protein Will Never Go Out of Style

Which component is affected when a catalyst is added to a chemical reaction

The is the driest biome on Earth.

Which one of the following statements correctly defines active site? a.The active site is a site on the enzyme molecule where specific substrate molecules bind. b.The active site is a site on the substrate molecule where specific enzyme molecules bind. c.The active site is a site on the substrate molecule where specific product molecules bind.