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Luden [163]
3 years ago
9

In the text area below compare and contrast a cell membrane and cell well

Biology
2 answers:
kykrilka [37]3 years ago
6 0

Answer:

A cell wall Protects the cell from the external environment  and provides support to the cell. A cell membrane separates the cells internal environment from the external environment and also control the flow of materials entering and exiting the cell

Explanation:

blondinia [14]3 years ago
4 0

Answer:

A cell membrane, seen in plant and animal cells, is selectively permeable and made of a phospholipid bilayer.

The cell membrane and cell wall control what enters and leaves the cell.

The cell wall is seen in a plant cell, gives shape to the cell, and stores carbohydrates.

The cell wall is selectively permeable and made of cellulose, which causes plants to have a rigid structure.

Explanation:

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What is the wavelength of a wave with a frequency of 0.4 kHz traveling at 16 m/s?
larisa86 [58]

Answer: 0.04metres

Explanation:

The wavelength of a wave is the distance covered by the wave after one complete cycle. It is measured in metres, and represented by the symbol λ

Recall that Velocity (V) = Frequency F x wavelength λ

V = F λ

Make λ the subject formula

λ = V / F

In this case Frequency = 0.4 kHz

Convert kilohertz to hertz by multiplying 0.4 by 1000 i.e (0.4 x 1000Hz) = 400Hz

Velocity of wave = 16 m/s

So, λ = V / F

λ = 16 m/s / 400Hz

λ = 0.04metres

Thus, the wavelength of a wave is 0.04metres

3 0
3 years ago
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irakobra [83]
C. employment and unemployment 
because it is the only one that makes sense

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Although your sister is not a scientist, she says that she uses scientific techniques in her everyday life. You do not believe h
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Answer:

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Explanation:

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3 years ago
What is the role of DNA in transmitting genetic information
ElenaW [278]

Answer:

The main role of DNA in the cell is the long-term storage of information.The major function of DNA is to encode the sequence of amino acid residues in proteins, using the genetic code.

Explanation:

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A slower-than-normal heart rate is called A slower-than-normal heart rate is called tachycardia. premature contractions. bradyca
stealth61 [152]

Answer: it is called Bradycardia.

Explanation:

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