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V125BC [204]
3 years ago
5

Which of the following statements are true of the cell wall?

Biology
1 answer:
marta [7]3 years ago
8 0

The answer is B because:

Cell walls are made of cellulose and proteins (hence II).

Animal cells don't have cell walls (only cell membrane) but plant cells do so IV

They must be semipermeable since materials for example carbon dioxide and water for photosynthesis have to go into the cell <em>some</em> way.

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jeka57 [31]
A plant begin to produce its own food in the following cases:
-when the first leaves are formed
-as soon as photosynthesis starts

Even the little new seeds grown-up from the food reserves, but start making their owm food as they see sunlight
4 0
3 years ago
Number the following levels of organization in order from the simplest to the most complex : atoms of elements, biological commu
anzhelika [568]

Answer:

subatomic particles

atoms of elements,

molecules of compounds,

organelles

cells,

tissues

organs,

,  organ system, ,

complex organisms

population,

biological community

ecosystem

, biome

biosphere

Explanation:

3 0
3 years ago
Which of the following is an example of specific immunity?
zvonat [6]

Answer:

Immunity to Small Pox

Explanation:

Over the years, Europeans had built up an immunity to smallpox because many had contracted the disease and still survived. As the population grew children were born with some immunity to the disease. When the Europeans arrived in the Americas, and smallpox spread around the native peoples, the Europeans did not contract the disease because they were immune. However, since the natives were not immune, they slowly died of due just to the disease as well as some parts of the war between the europeans.

4 0
2 years ago
Next Door Cellular is a leading mobile network operator. Since most of the resources used by Next Door Cellular are easily avail
Katen [24]
<h2>Rare</h2>

Explanation:

  • The VRIO structure is a key examination device intended to assist associations with revealing and secure the assets and abilities that give them a long term advantage.
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  • The differentiators and points of interest you recognize will decide how to move toward the commercial center and illuminate key choices that shape the destiny of your organization.

4 0
3 years ago
What do cells want to being in and what do cells want to keep out
PilotLPTM [1.2K]

Answer:

Cell membranes serve as barriers and gatekeepers. ... Small polar molecules, such as water and ethanol, can also pass through membranes, but they do so more slowly. On the other hand, cell membranes restrict diffusion of highly charged molecules, such as ions, and large molecules, such as sugars and amino acids.

Explanation:

Hope it helps :)

4 0
2 years ago
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