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2 years ago

What is the function of the cell membrane

2 answers:

soldier1979 [14.2K]2 years ago

7 0

A cell membrane protects a cell from it's surroundings. The cell membrane controls the movement of substances from the outside and inside of cells and organelles.

tensa zangetsu [6.8K]2 years ago

3 0

The cell membrane, also known as the plasma membrane, is the outer covering of animal cells which sits inside the cell wall of plant cells. It is semi-permeable so it allows certain materials to go in and out of the cell. Substances that can pass easily in and out of the cells include oxygen, carbon dioxide, and water. So basically, it is separates the cytoplasm from the outside environment, allowing only certain molecules to enter and exit the cell and also controls the amount of the substances that can go in and out.

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I want a sister my parents are so so boring

BARSIC [14]

Answer:

I can be ur sister

Explanation:

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2 years ago

A Cotton shirt takes more time to dry as compared to a synthetic shirt. Why?<br><br>

Salsk061 [2.6K]

Answer:

Due to absorption of more water.

Explanation:

A Cotton shirt takes more time to dry as compared to a synthetic shirt due to absorption of more water by the cotton fiber as compare to other fiber. Cotton absorbs much more water than other synthetic fibers, and attached to the molecules of cotton for longer period of time which means cotton fibers take more time to dry as compared to synthetic fiber which absorb little amount of water and loosely attached to the molecules of fiber.

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3 years ago

The rise in manufacturing beginning in the early 1800s eventually resulted in __________ by 1848?

mamaluj [8]

Answer:

The correct answer is "The emergence of a larger middle class in the North".

Explanation:

The missing options of this question are:

A) The emergence of a larger middle class in the North

B) A decline in economic inequality in urban areas

C) An increased demand for agricultural workers in the Midwest

D) The improvement of working conditions in factories

The correct answer is "The emergence of a larger middle class in the North"

The period of 1800 to 1848 is characterized by being of economical growth due to the rise in manufacturing technology. Result of this economical growth, many families improve their economical conditions and by 1848 a larger middle class emerged in the North. However, eventually a laboring poor population started to growth as well.

6 0

2 years ago

What would be the most likely effect on the transcription of the trp structural genes for the mutation scenarios provided? mutat

blagie [28]

Answer:

I've responded to each scenario individually, please see below:

1. mutation that prevents ribosome binding to the mRNA

No transcription occurs

2. 5' UTR mutation that changes region 1 tryptophan codons into alanine codons

Transcription when alanine is low

3. mutation that creates a stop codon in region 1 of mRNA 5' UTR

Transcription occurs, a truncated protein will be made during translation

4. deletions in region 2 of the mRNA 5' UTR

Transcription occurs, region 1 and 2 might get paired together

5. deletions in region 3 of the mRNA 5' UTR

Transcription occurs, region 3 and 4 could combine to form a hairpin loop structure

6. deletions in region 4 of the mRNA 5' UTR

Transcription occurs, region 3 and 4 could combine to form a hairpin loop structure

7. deletion of the string of adenine after region 4 of the mRNA 5' UTR

Transcription occurs, however, it will not be as stable a molecule because of losing its polyA tail

Hope that answers the question, have a great day!

6 0

3 years ago

Read 2 more answers

Lead poisoning can cause extensive organ/system damage, including: a. Respiratory failure, circulatory system collapse, and skin

adell [148]

Answer:

The correct answer will be option-C

Explanation:

Lead is a metal found in the Earth's crust which through human practices like using it in paints and other products cause lead poisoning in humans due to accumulation of lead in the body.

Lead poisoning can affect the child above 6 years and adults and prove harmful as its increased concentration can cause severe health problems common of which are the development of anaemia due to large consumption, brain damage, reduced mental growth and severe stomach ache.

Thus, Option-C is the correct answer.

4 0

3 years ago