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2 years ago

The majority of the plasma membrane can be described as a bilayer of with associated proteins.

1 answer:

4 0

According to the research, the correct option is phospholipids. The majority of the plasma membrane can be described as a bilayer of phospholipids with associated proteins.

<h3>What is the plasma membrane?</h3>

It is a double layer of phospholipids and proteins, which perform functions of connection, transport and catalysis, which covers and delimits the cells, serving as a border between the inside and the outside of it.

In this sense, one of the peculiarities of phospholipids is that they are amphipathic, their molecules have a part that is soluble in water (that is, hydrophilic) and another that is not (hydrophobic), these lipids are primarily cholesterol, phosphoglycerides and sphingolipids

Therefore, we can conclude that according to the research, the correct option is phospholipids. The majority of the plasma membrane can be described as a bilayer of phospholipids with associated proteins.

Learn more about plasma membrane here: brainly.com/question/14828752

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State two reasons why the fetal blood must not mix with the maternal blood?

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Answer:During pregnancy, red blood cells from the unborn baby can cross into the mother's blood through the placenta. If the mother is Rh-negative, her immune system treats Rh-positive fetal cells as if they were a foreign substance. The mother's body makes antibodies against the fetal blood cells

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3 years ago

a german measles rubella epidemic during the years 1963 to 1965 resulted in approximately 30,000 babies being born with birth de

Juli2301 [7.4K]

Answer:

In babies born with congenital defects during the German measles rubella epidemic the specific cause of these birth defects was most likely the development of rubella virus infections in embryos.

Explanation:

Options for this question are:

1. The development of rubella virus infections in embryos. 

2. The failure of zygotes infected with rubella to develop

3. Mutations in the nerve cells of pregnant females at the time of the rubella epidemic .

4. An increase in the amount of time needed for healthy embryonic development.

Rubella is a viral infection caused by a virus of the genus Rubivirus, considered highly teratogenic during the phases of pregnancy where the embryo and the fetus are developing, that is, before 20 weeks of gestation.

The virus is transferred to the embryo or fetus by the mother's blood, acquiring the disease, which can cause abortions or visible malformations at birth, which is called Congenital Rubella Syndrome (CRB).

CRB is responsible for producing cardiovascular, renal, neurological malformations, loss of vision or hearing, problems that German children born during the epidemic probably had.

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4 years ago

Many of the responses to stress are attributed to activation of the sympathetic nervous system and are mediated by

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Answer:

Responses to stress are attributed to activation of the sympathetic nervous system and are mediated by adrenal medulla which is the central portion of the adrenal gland.

Explanation:

Stress is a physical, mental, and emotional response to a threat, and causes bodily and mental tension. There are different causes of stress, for example, an exam, a divorce, moving from a house, being fired, somebody’s death.

The body’s stress response is mediated by the sympathetic nervous system (SNS), and the hypothalamic-pituitary-adrenal (HPA) system. The SNS is responsible for the neural fight-or-flight response to stress.

In a stressful situation the hypothalamus, which is in charge of the stress response, sends signals to the pituitary gland and the adrenal medulla. The adrenal medulla secretes the neurotransmitters and hormones adrenaline and noradrenalin to the bloodstream. These hormones get the body ready for a response to stress, by increasing heart biting frequency and strength, increasing blood pressure, stimulating respiration, and dilating respiratory tracts.

Once the threat factor is over, the body gets back into a balanced state.

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3 years ago

Why does it matter over what time span carbon dioxide concentration increases?

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Answer:

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3 years ago

The shape of a pyramid is primarily determined by what demographic shape?

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