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77julia77 [94]
3 years ago
14

Which of the following statements is true about the structure of the cell membrane?

Biology
1 answer:
miskamm [114]3 years ago
4 0

Answer:

The correct answer is:

The two layers of the plasma membrane are identical.

Explanation:

The plasma membrane is called a lipid bilayer because it is composed of two layers of cells and it makes the boundary of cell.

The other three statements are false because

Plasma membrane is semipermeable i.e it allows the transport of materials inside and outside the cell.

The proteins in the plasma membrane are integral proteins

The proteins in the plasma membrane are extensively folded and protruding from the membrane are in contact with inside and outside the cell.

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What important changes occur in the nucleus and the cell during the longest phase of the cell cycle?
sp2606 [1]
The longest phase of mitosis is prophase. Because the nuclear membrane disappears, Nucleolus disintegrates, and the DNA condensed to form chromosomes (each chromosome is composed of sister chromatids attached around centromere.)
5 0
3 years ago
2) Sometimes insects will instead sit on top of a warm surface in order to increase their body temperature. What is the primary
SCORPION-xisa [38]

Answer:

The correct option is C.

Explanation:

There are three modes of heat conduction, these are conduction, convection and radiation. Heat transfer by conduction usually involves the movement of heat through solid substances. For instance, in the scenario given in this question, the warm surface is the solid substance through which heat is passed to the insects' bodies. Thus, conduction requires direct contact.

Heat transfer by convection method usually involves the movement of heat through liquids or gases while radiation can occur in vacuum.

4 0
2 years ago
Thick mucous gland secretions, elevated sweat electrolytes, meconium ileus, and difficulty maintaining and gaining weight are as
Hoochie [10]

Answer:

The correct option is the number 2. Cystic fibrosis

Explanation:

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The mucus block the ducts that carry digestive enzymes from the pancreas to the small intestine. Without these digestive enzymes, the intestines are not able to completely absorb nutrients in the food. The result is often, little increase in weight and growth, intestinal obstruction, particularly in newborns (ìleo meconium), among others.

Cystic fibrosis also affects the epithelial cells of the sweat glands, children suffering from this disorder may have a kind of salt layer on the skin. They can also lose abnormally high amounts of salt when they sweat on hot days.

4 0
3 years ago
I’ll mark u as brainliest!
Westkost [7]

Answer:it might be 3

Explanation:

8 0
3 years ago
Which of the following would be regarded as compounds?<br>A) H2 <br>CI <br>c) 02 <br>D) CH4 ​
Anastasy [175]

Answer:

its C

Explanation:

5 0
3 years ago
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