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Oksi-84 [34.3K]
3 years ago
15

Which of these describes a difference between viruses and cells?​

Biology
1 answer:
OlgaM077 [116]3 years ago
3 0
Viruses cannot reproduce. they instead copy themselves with the help of a host cell. a cell can reproduce and doesn’t need help from other cells
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Cell structures that plant and animal cells don't share are _____.
liubo4ka [24]

Answer:

a cell wall (because a plant cell is less rigid than an animal cell)

- a large central vacuole (where plant cells store water)

- chloroplasts (which plants use to carry out photosynthesis)

Explanation:

8 0
3 years ago
What is embedded in the phospholipid bilayer that helps in the movement of larger molecules ?
gladu [14]

Answer:

\boxed {\boxed {\sf A. \ Channel/Transport \  proteins}}

Explanation:

The phospholipid bilayer is also known as the cell membrane. It covers cells and regulates the transport of substances. Certain ones can pass and others cannot, depending on certain factors like size and polarity.

Smaller substances tend to diffuse or move across the membrane quite easily. However, larger molecules have a much harder time. Many depend on special proteins embedded in the membrane. These are called transport proteins and they form a channel so large molecules can still move in or out of the cell.

So, salt, water, and fats do not contribute to the movement of larger molecules, but <u>channel or transport proteins do and choice A is correct. </u>

3 0
2 years ago
Two different scientists were studying the carbon levels of the air above a large city. They both found that the levels had incr
ss7ja [257]

Answer:

Scientist 1

Explanation:

<em>The conclusion of scientists 1 is valid.</em>

Human activities such as burning of fossil fuels, agriculture, deforestation, etc. leads to the emission of carbon in the form of carbon dioxide into the atmosphere. <em>An increase in the population of a city will only lead to an increase in these activities and hence, an increase in the amount of carbon emitted into the atmosphere.</em>

Also, volcanic activities leads to the production of volcanic gases which is a mixture of carbon dioxide, oxides of sulfur, nitrogen, etc.

<u>However, an active volcano that is several miles away from the city might not be a major source of carbon in the air above a large city. The carbon dioxide produced from such volcanic activity thins out before reaching the city.</u>

5 0
3 years ago
_______ is a method of growing or controlling forest growth for the health and value of the environment.
Kisachek [45]

Answer:

I think its reforestation

Explanation:

8 0
3 years ago
Read 2 more answers
The ___ biome is characterized by moderate temperatures and high quantities of precipitation.
diamong [38]

Answer:

The temperate rain forest.

Explanation:

Temperate rain forests are similar in structure and precipitation amounts to a tropical rain forest. The difference is in the location and temperature of each. Tropical rain forests are located on and near the equator, and are incredibly warm and humid, with large amounts of precipitation. Temperate rain forests are found north of the Tropic of Cancer and have moderate temperature and humidity levels. The way to remember the difference is to notice that Temperate is a combination of 'moderate' and 'temperature' and can be said to mean "moderate temperature". I hope this is the answer you were looking for!

7 0
2 years ago
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