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Monica [59]
3 years ago
9

What is the purpose of the cell membrane?

Biology
1 answer:
slava [35]3 years ago
6 0
Cell membrane is a thin line.it controls the movement of materials into and out of the cell. it is partially permeable,that is,it allows only certain materials to pass through.
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Anaerobes carry on whereas aerobes carry on cellular respiration
Tcecarenko [31]

Answer:

Anaerobes carry on cellular respiration in the absence of oxygen, whereas aerobes carry on cellular respiration in the presence of oxygen.        

Explanation:

Many of the cell processes needed need some energy to occur. Cellular respiration is the process by which cells degrade organic compounds and turn them into energy. Cellular respiration follows two ways, which depend on the presence or absence of oxygen, and both of them begin with the process of glycolysis, which occurs in the cytoplasm and does not need oxygen to occur.

<u>Aerobic Respiration</u>

  1. Occurs in the presence of free oxygen.
  2. Series of reactions by which pyruvic acid (product of glycolysis) turns into CO₂ and H₂O, producing many ATP molecules.
  3. Respiration occurs in the mitochondria.
  4. Takes place in two steps or stages: Krebs cycle and electron transporter chain.
  5. Glycolysis and Krebs cycle produce electrons, which then travel along the electron transporter chain while releasing energy, and ATP is produced.

<u>Anaerobic Respiration </u>

  1. Occurs in the absence of free oxygen
  2. Series of reactions by which using pyruvate (product of glycolysis) 2 ATP molecules van be produced.
  3. There are two ways in which anaerobic respiration can be produced: lactic fermentation and alcoholic fermentation.
  4. Lactic fermentation produces lactic acid and 2 ATP
  5. Alcoholic fermentation occurs in two steps, and the final products are ethylic alcohol, 2ATP, and 2 CO₂
  6. The whole anaerobic process occurs outside the mitochondria.
6 0
3 years ago
3. Describe at least three types of medical interventions that can be used to treat and repair broken bones. Explain the theory
hjlf

Answer:

1. Casting

2. Open reduction and internal fixation

3. Open reduction and external fixation

Explanation:

Casting is the process of making use of plaster-of- Paris to cure a fracture.

Open reduction, and internal fixation can be described as a situation whereby surgery is used to repair the fracture-frequently, and involves the use of metal rods, screws or plates to repair the bone. These things remain in place, under the skin, after the surgery. This procedure is adopted when the complicated fractures are not able to be realigned (reduced) by casting.

Open reduction, and external fixation is known to involve surgery to repair the fracture, and placement of a external fixation device on the limb with the fracture. This device is an external frame which supports the bone and hold it in the correct position while it is healing.

5 0
3 years ago
You are studying the effects of specific transcription factors on the activation of gene expression. You notice that one particu
Leokris [45]

Answer:

The answer is the flexibility of DNA.

Explanation:

The flexibility os DNA is what allows transcription factors at distant binding sites to do their job. The DNA loops like cooked spaghetti to bring far-off binding sites and transcription factors close to general transcription factor or mediator proteins.

3 0
3 years ago
10) What is required for an organism to become a fossil?
daser333 [38]

Answer:

B

Explanation:

It must <em>always </em>be buried quickly that's the whole point.

8 0
3 years ago
Read 2 more answers
Finfish, ocean catches, and fish-farming provide approximately what percentage of
Lynna [10]

Answer:

30 percent

Explanation:

Protein is essential in living organisms. They are the building blocks of life and help in the replacement and repair of work out tissues of the body. There are various sources of protein which are plant sources and animal sources.

Animal sources include land and aquatic animals.Sea Finfish, ocean catches, and fish-farming provide approximately 30

percent of animal protein sources consumed by humans in the world.

5 0
3 years ago
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