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zlopas [31]
3 years ago
15

What is it called when particles move across a membrane/barrier?

Biology
1 answer:
Varvara68 [4.7K]3 years ago
5 0
The answer is diffusion.


Facilitated diffusion is a process by which molecules are transported across the plasma membrane with the help of membrane proteins.

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The peptidoglycan of bacterial cell walls contains a carbohydrate matrix linked together by short chains of:__________
V125BC [204]

The peptidoglycan of bacterial cell walls contains a carbohydrate matrix linked together by short chains of fatty acids.

<h3>Write about Bacterial cell wall.</h3>

In bacteria, the cell wall forms a rigid structure of uniform thickness around the cell and is responsible for the characteristic shape of the cell (rod, coccus, or spiral).

Inside the cell wall (or rigid peptidoglycan layer) is the plasma (cytoplasmic) membrane; this is usually closely opposed to the wall layer.

It is also important to note that most bacteria (about 90%) have a cell wall and they typically have one of two types: a gram positive cell wall or a gram negative cell wall.

Both gram positive and gram negative cell walls contain an ingredient known as peptidoglycan (also known as murein).

This particular substance hasn’t been found anywhere else on Earth, other than the cell walls of bacteria.

The bacterial cell wall performs several functions as well, in addition to providing overall strength to the cell. It also helps maintain the cell shape, which is important for how the cell will grow, reproduce, obtain nutrients, and move.

It protects the cell from osmotic lysis, as the cell moves from one environment to another or transports nutrients from its surroundings.

To learn more about Bacterial cell wall,

brainly.com/question/3024933

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6 0
2 years ago
What is the purpose of plants having mitochondria if they have chloroplasts?
navik [9.2K]

Answer:

Plant cells need both chloroplasts and mitochondria because they perform both photosynthesis and cell respiration.

Explanation:

Chloroplast converts solar energy into chemical energy during photosynthesis, while mitochondria, the powerhouse of the cell, produces ATP- the energy currency of the cell during respiration.

6 0
3 years ago
This question is regarding climate change killing elephants​
puteri [66]

Answer:

Explanation:

Climatology & Biology

Climatology (from Greek κλίμα, klima, "place, zone"; and -λογία, -logia) or climate science is the scientific study of climate, scientifically defined as weather conditions averaged over a period of time.

&

Biology is the natural science that studies life and living organisms, including their physical structure, chemical processes, molecular interactions, physiological mechanisms, development and evolution. Despite the complexity of the science, certain unifying concepts consolidate it into a single, coherent field.

So if we understand the way elephants work through biology then we can understand how change in temperature and weather can affect them

5 0
3 years ago
Where does DNA unwinding begin?
Alexxx [7]

DNA unwinding begins at the Origin of replication.

3 0
4 years ago
Explain the relationship between the sarcoplasmic reticulum and the transverse tubules
Hitman42 [59]
<span>T-tubules and SR form Molecularly and Structurally specialized Membrane domains that support  E-C, Excitation contraction.</span>
7 0
3 years ago
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