HIV, the virus that causes AIDS, is a retrovirus. Which of the following sentences BEST defines a retrovirus?

A. A retrovirus converts DNA into RNA,

B. A retrovirus causes lifelong infection.

c. A retrovirus is an old virus that infects new cells.

D. A retrovirus inserts DNA into the host cell's genes.

Answers

Answer 1

Answer:

The answer is D a retrovirus inserts DNA into the host cells genes


Related Questions

what are plastids
And what is a middle lamela ​

Answers

The middle lamella is a layer which cements the primary cell walls of two adjoining plant cells together. ... In a mature plant cell it is the outermost layer of cell wall. In plants, the pectins form a unified and continuous layer between adjacent cells.

Plastids are defined as small organelles present in the cytoplasm of the plant cell. ... Chloroplasts - These kind of plastics are used in the process of photosynthesis as they have green colored pigment.

For heavier stems, it is advised to use
floral foam.

O Perforated
O Unperforated

Answers

Unperforated foam is best.

Question 1 of 20
Select the best answer for the question
1
b
2
3
image by Open OC BY 30).
via Wikimedia Commons
1. This is an image of the phospholipid bilayer. Based on what you know about the structure of the phospholipid bilayer, what is the name of the structure labeled
27
A Hydrophobic tall
ОВ. АТР
C Sodium-potassium pump
D. Hydrophilic hea

Answers

the correct answer to your question is d .

n an ocean, the water is not the same temperature throughout. Do you think the surface is warmer or cooler than the water at the bottom? (With Explanation)

Answers

Answer:

Cold water has a higher density than warm water. Water gets colder with depth because cold, salty ocean water sinks to the bottom of the ocean basins below the less dense warmer water near the surface.

Explanation:

the surface is warmer



because the sun’s rays penetrate the water easily

What is the difference between homologous chromosomes and homologous pairs?

Answers

A homologous chromosome pertains to one of a pair of chromosomes with the same gene sequence, loci, chromosomal length, and centromere location.

A homologous pair consists of one paternal and one maternal chromosome. In humans, there are a total of 46 chromosomes in the nucleus of a somatic cell.

An earthquake with a(n) of 7.2 releases about 30 times as much energy as an earthquake that registers 6.2 on the Richter scale. giving brainliest!!

Answers

Answer:

The correct answer is - magnitude.

Explanation:

The earthquake is measure by the Richter scale in the unit of magnitude. It is the size of the earthquake in the length into the width and the slip. Magnitude is nothing but the distance or the power or extent of the earthquake.

There are different energy at different measures of magnitude on the Richter scale. Magnitude of 7.2 releases 30 times more energy than the energy releases by 6.2 magnitudes.

What are 3 things all living things have in common, from bacteria to potatoes to elephants?

Answers

Answer:

Here are 3 things all living things have in common:

1. They are all made of cells.

2. All living things have the ability to grow and change.

3. All living things maintain homeostasis.

Please give me brainliest if I helped!

- all living things reproduce
- living things maintain a stable internal environment
-living things obtain and use material as energy
- all living things are made up of cells
- living things evolve

Why does a cell need centrioles and spindle fibers to reproduce?

Answers

Answer:

These spindle fibers act as guides for the alignment of the chromosomes as they separate later during the process of cell division.

(credits to the rightful owner for this answer :)

how was sam greene during her polygraph test for the case of Anna gracia

Answers

Answer:

Im sorry what?

Explanation:

Prolonged periods of drought in an area cause decreases in plant population
sizes. Which of the following statements describes how the decreases in plant
population sizes affect other populations in the area?
CA. Omnivore population sizes increase, and herbivore population sizes
increase.
B. Omnivore population sizes decrease, and carnivore population sizes
increase.
C. Herbivore population sizes increase, then the carnivore population sizes
decrease.
D. Herbivore population sizes decrease, then the carnivore population sizes
decrease.

Answers

Answer:

D -herbivore population sizes decrease ,then the carnivore population sizes decrease

The statement describes the decreases in plant population sizes affect other populations in the area is herbivore population sizes decrease, then the carnivore population sizes decrease.

What is the difference between carnivores and herbivores?

The three diets of animals include creatures that eat only plants, those that eat only meat, and animals that eat both plants and meat. Animals that eat plants exclusively are herbivores, and animals that eat only meat are carnivores.

Herbivores animals have broad, flat and short, teeth to grind and chew plant leaves, grains, and seeds. Carnivores animals possess long, sharp, and curved incisors and canines to tear flesh.

Teeth are suited for eating plants as well as meat. Deer, goats, zebras, etc. are the examples of the herbivores. Carnivores animals are lions, tigers, dogs, etc.

Learn more about herbivores and carnivores:

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_________ is when the cell uses the mRNA code to build protein. This process takes place in the _________ with the help of the organelle called the ___________.

Answers

Answer:

1. Translation

2. Cytoplasm

3. Ribosome

Explanation:

Translation is a process whereby the cell uses a mRNA template to produce an amino acid sequence (protein). It is the second stage of gene expression in living organisms.

Translation occurs in the CYTOPLASM of a cell with the help of an organelle called RIBOSOME. The ribosome attaches to the mRNA molecule in the cytoplasm to initiate the process of translation.

Most of the planets that have been discovered using the transit method have had large diameters. Why?

Answers

Answer:

Most planets discovered using the transit method have large diameters because planets having large diameters results in a more pronounce (noticeable) dimming effect during their transit between a star and an observer and are therefore readily discovered using the transit method than planets that have a smaller diameter

Explanation:

The transit method involves the detection of a transit (dimming) during the motion of an object between a star and an observer such as the motion of Mercury or Venus between an observer on Earth and the Sun

A large planet gives a higher dimming effect than a small planet and they are therefore more easily detectable using the transit method

The transit method is the method used to discover most of the known exoplanets which are planets that revolve around a star which is not the Sun

As the planet transits in front of a star in an observer's line of sight, it results in the dimming of the stars light by an amount equivalent to the ratio of the planet's to the star's circular areas

Example of planets discovered using the transit method includes the planet HD209458b.

⚠️urgent⚠️The
is living xylem that transports
up from the roots to the
and
The scientific name
for sapwood is

Answers

Answer:  plant vascular tissue

Explanation:

The Hubble Constant measures distance in:
•astronomical units
•light-years
•kilometers per second per megaparsec
•parsecs

Answers

Answer:

light years

Explanation:

because the further way it is the more light years and it has to be travelling at the speed of light

Answer:

kilometers per second per megaparsec

Explanation:

32. Cold air takes up ___________ space than warm air

Answers

Answer:

less

Explanation:

less

New seafloor material is formed at places in Earth's crust where

1. Rock is broken into pieces as tectonic plates push against one another

2. One tectonic plate slides beneath and is forced downward

3. Lave flow from volcano eruptions builds up over many thousands of years

4. Magma rises into the spaces where tectonic plates pull away from one another

Answers

New seafloor material is formed at places in Earth's crust where, one tectonic plate slides beneath and is forced downward. Thus, option 2 is correct.

What is tectonic plate?

The word tectonic Plates was derived from Latin word tectonicus which means pertaining to building. Scientific theory considers that there are  a number of large tectonic plates on earth, Which has been moving since  3.4 billion years ago.

Tectonic plates are consist of oceanic and continental lithosphere. Earths  lithosphere has greater mechanical strength therefore, plates are able to move.

Therefore, option 2 is correct.  

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Which of these conditions is most responsible for earth having an environment that supports life?

Answers

Answer:

Oceans regulating climate on land.

Explanation:

Oceans regulating climate on land is the most responsible for earth having an environment that supports life.

What is the global climate?

The long-term distribution of heat and precipitation on Earth's surface is called global climate.

Ocean currents act much like a conveyer belt, transporting warm water and precipitation from the equator toward the poles and cold water from the poles back to the tropics.

Thus, currents regulate global climate, helping to counteract the uneven distribution of solar radiation reaching Earth's surface.

Hence, option A is correct.

Learn more about the global climate here:

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How does the Sun transfer its energy to areas A and B?



Which statement compares how much heat is absorbed by areas A and B?



Which statement compares the temperatures of areas A and B?

Answers

Answer:

How does the Sun transfer its energy to areas A and B?

✔ radiation

Which statement compares how much heat is absorbed by areas A and B?

✔ Area A absorbs more heat.

Which statement compares the temperatures of areas A and B?

✔ Area A is warmer than area B.

Explanation:

EDGE

Answer:

How does the Sun transfer its energy to areas A and B?✔ radiationWhich statement compares how much heat is absorbed by areas A and B?✔ Area A absorbs more heat.Which statement compares the temperatures of areas A and B?✔ Area A is warmer than area B.

Explanation:

4.
Sex cells contain
chromosomes.
a. 46
b. 23
C.28
d. 1

Answers

Answer:

C i did this in ed not to long ago

the answer is B. 23 chromosomes

Riscuess what kind of georgespgic barries would have led to the flinch speciation in the Galapagos

Answers

Answer:

Rivers change course, mountains rise and continents drift.

Explanation:

Rivers change course, mountains rise and continents drift are the geographic barriers that have led to the flinch speciation in the Galapagos because these barriers separated finch species from one another. Due to these geographic barriers, finch species have different body structure and features. These geographic barriers prevent two finch species from interbreeding with one another which leads to flinch speciation.

Help!!! Write 2-3 sentences explaining the scene of a rainforest.

WILL GIVE BRAINLIEST

Answers

Answer:

Rainforests are the Earth's oldest living ecosystems.

They are so amazing and beautiful.

These incredible places cover only 6 %of the Earth's surface but yet they contain MORE THAN 1/2 of the world's plant and animal species!

A Rainforest can be described as a tall, dense jungle.  The reason it is called a "rain" forest is because of the high amount of rainfall it gets per year.  The climate of a rain forest is very hot and humid so the animals and plants that exist there must learn to adapt to this climate.

Rainforests basically have four layers to them.

Table divider

Monkeys are skillful climbers who leap and scamble among the branches

As many as 30 million species of plants and animals live in tropical rainforests.

At least two-thirds of the world's plant species, including many exotic and beautiful flowers grow in the rainforests.

This pink plant grows on rainforest trees - it is an epiphytic air plant which means it grows on the tree but is not a parasite.

Table divider

Rainforests are the source of many items that we all use in our own homes!

We eat several foods from the rainforest and many medicines are made from ingredients found only in these areas.

Sap that is used to create rubber from a Rainforest tree

Some of the common products we know of include:

chocolate

sugar

cinnamon

rubber

medicine

pineapples

Explanation:

[tex]\huge\mathfrak\green{AnSwEr} [/tex]

~In a rainforest you'll see tall trees everywhere.

~You'll get to see different species of animals.

~There might be some indigenous people in groups like “Yanomamo and Kayapo” in the Amazon Rainforest.

___________________________

[tex] \tt \green{~ ʜᴀᴘᴘʏ \: \: ʟᴇᴀʀɴɪɴɢ ~ }[/tex]

Small sections of DNA that contain information for specific traits an organisms may inherit are called ________.

Answers

Answer:

Genes!!

Genes are segments of deoxyribonucleic acid (DNA) that contain the code for a specific protein that functions in one or more types of cells in the body. Chromosomes are structures within cells that contain a person's genes. Genes are contained in chromosomes, which are in the cell nucleus.

The contest between living organisms seeking similar resources.

Answers

Answer:

competition occurs when living organisms, including animals, plants, bacteria and fungi, need the same limited resources to thrive in their shared environment.

Explanation:

hope this helps (brainliest plz)*

Competition is the contest between organisms seeking similar resources

A student was studying the two types of nucleic acid. Based on his observation, a piece of nucleic acid had the: 5’-GCUA-3’ What kind of nucleic acid is this?

Answers

Answer:

DNA and RNA structure and function. Nucleotides and polynucleotides. mRNA, rRNA, tRNA, miRNA, and siRNA

Explanation:

I don't normally do stuff like this so I do not know if it is even near being right

please explain how a punit square works, I have a major test on it and im confused

Answers

Answer:

Explanation: https://youtu.be/agQpPPQ5IVQ

heres a video explaining

Answer:

The image is attached but it might be hard to understand because it's hard to explain

One letter from each parent are combined to create a genotype of one possible offspring. Example: G (from one parent) + g (from the other parent) = Gg (genotype of offspring)

Capital letters are dominant and lowercase letters are recessive

Dominant traits mask recessive ones so when the genotype of the offspring is Gg, it will be green because green is dominant over yellow

If you need any help with the questions on the test you can post them and i'll help

How does the shape of vomerine teeth help it preform its function?(holding prey) This question is about frogs in case there is any confusion

Answers

Answer:

The shape in V of the vomerine teeth is useful to hook the prey and hold it until the frog can swallow it.  

Explanation:  

In frogs, we can distinguish maxillary teeth, premaxillary teeth, and Vomerine teeth.

Vomerine teeth are projections of the vomer bone, located in the anterior part of the paladar and between the internal nares.

Vomerine teeth are specialized structures that help frogs catch and hold their prey. They are not involved in chewing or killing (frogs swallow the entire prey alive), just holding the creature before swallowing it.

These projections are covered by soft tissue. When the frog catches the prey, presses the tongue against the roof of your mouth. The vomerine teeth hook the prey and prevent it from slipping or wandering away.

The shape in V of the vomerine teeth is useful to hook the prey and hold it until the frog can swallow it.

what is the end product of the cell cycle

Answers

Answer:

The Meiosis Cell Cycle

Explanation:

Cell cycle is the process if cell division. The end product of cell cycle is two genetically identical daughters cells produced by cell division.

What is cell cycle?

Cell cycle is the process occurring through different stages by which a cell divides to form its daughter cells. Various enzymes have significant roles in cell cycle.

A large number of DNAs in the chromosome of a cell undergo division where, the double stranded DNA separate and and each strand forms two new DNAs.

Therefore, at the end of a cell cycle through proper cell division, two genetically identical daughters cells are produced.

To learn more about cell division, refer the link below:

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What effect, if any, does oleandrin have on your estimation of time of death?

Answers

Answer:

Explanation:

http://drozel.org/eng/diagnosis_brain_EO.htm

Drag each term to the correct location on the table. Each term can be used more than once.
What are the inputs and outputs of cellular respiration and photosynthesis?

Answers

Answer:

Respiration is the reverse reaction of photosynthesis.

Explanation:

The inputs of cellular respiration are oxygen and glucose and the outputs of cellular respiration are energy in the form of ATP, water and carbondioxide while on the other hand, the inputs of photosynthesis are water and carbondioxide and the outputs of photosynthesis are glucose and oxygen. Glucose is stored in the body whereas some oxygen is used in the process of respiration while the rest is released in the atmosphere.

Someone please help me!!

Answers

Answer:

The correct answer is the letter B

Explanation:

I'm good in bio

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