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pentagon [3]
3 years ago
13

The plasma membrane found in both prokaryotic and eukaryotic cells is composed of a/an _______, which is semipermeable and contr

ols the flow of molecules into and out of the cell.
Biology
1 answer:
zzz [600]3 years ago
5 0

the answer is a <u><em>phospholipid bilayer</em></u>

it's called phospholipid because it's made of a group of lipids that has a phosphate group and bilayer because it's made of hydrophilic heads that are exposed to the solution and hydrophobic tails that are directed inwards

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Why do grocery stores spray their fresh produce with water
spayn [35]

This allows the fruits to maintain their plumpness and freshness hence keep them appealing for customers to shop.

Explanation:

Spraying water reduces the loss of water by the fruits to the environment by evaporation hence keeps them hydrated. When the fruits tend to wilt, the sprayed water is absorbed into the fruit though osmosis (because the fruit cells are hypertonic in comparison to the sprayed water) allowing the cells maintain their turgor pressure. This tugor pressure is important in ensuring the fruits look full and fresh.

Learn More:

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3 0
4 years ago
Which protein hydrolyzes atp during contraction?
tatyana61 [14]

Answer:

Myosin.

Explanation:

Myosin is an ATPase, that is, the subset of enzymes that are capable of producing the hydrolysis of adenosine triphosphate (ATP) into adenosine diphosphate (ADP) and a free phosphorous ion (phosphate ion).

7 0
3 years ago
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Rabies is a viral disease contracted from the bite of an infected animal. Rabies bypasses many immune system defenses by traveli
harina [27]

Answer:

D. Anterograde flow

Explanation:

Axonal transport is of 2 types:

  1. Anterograde: Transport material from the soma towards the axon.
  2. Retrograde: Transport materia from axon towards soma.

Pathology :

  1. Virus enters tissue from saliva of biting animal.
  2. Virus replicates in muscle near bite.
  3. Virus moves to peripheral nervous system to CNS.
  4. Virus ascends the spinal cord.
  5. Virus reaches brain and causes fatal encephalitis.
  6. Virus enters salivary glands and other glands and other organs of victim.

Hence,Rabies bypasses many immune system defenses by traveling in peripheral neurons to reach the CNS. While anterograde flow  is NOT used by the rabies virus to reach the CNS

3 0
3 years ago
What is the difference between aerobic and anaerobic processes
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Answer:

The principle difference between aerobic and anaerobic process is aerobic process requires oxygen and generate more energy whereas anaerobic process occurs in absence of oxygen and generate less energy.

Explanation:

Aerobic process or aerobic respiration include glycolysis,TCA cycle and oxidative phosphorylation.As a result during Aerobic respiration a glucose molecule undergo complete oxidation to form CO2 and H2O along with 38 molecules of ATP.

 On the other hand Anaerobic process or Aerobic respiration only involves glycolysis.As a result no TCA cycle and oxidative phosphorylation occur during Anaerobic process.Glycolysis that occur during Anaerobic produces only two molecules of ATP.

 During anaerobic respiration the end product of pyruvate undergo lactic acid fermentation to form as well as to regenerate NAD+.

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3 years ago
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In what way are the bacteriophage and E.coli alike
stepladder [879]
Upon connection to the bacterium, the bacteriophage penetrates the host cell envelope and infuses its genomic material into this phone, guaranteeing novel bacteriophages can be created. Every protein is named with an extraordinary shading.
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