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Ber [7]
4 years ago
6

Membrane phospholipids are arranged in a bilayer with hydrophilic heads on the

Biology
1 answer:
kicyunya [14]4 years ago
5 0

Answer:

A.) the phospholipid heads can interact with water inside and outside the cell

Explanation:

The cell membrane is mostly composed of phospholipids which form a bilayer due to the properties of the phospholipids. The phospholipids are made up of phosphate heads, which are hydrophilic and attracted to water, and fatty acid tails, which are hydrophobic and repelled by water.

Due to these properties, a bilayer arrangement forms spontaneously, with the heads being attracted to the water both inside and outside the cell, and the tails being repelled by water and clustering together inside the bilayer

This regulates the passage of materials into and out of the membrane - some substances can easily pass, others are blocked from entering

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How would you describe what the cells of each stage of the cycle look like ? what are the visible features of the cells.
qwelly [4]

Interphase:

Is known as the resting stage. Replication of DNA occurs.

- G1

-S

-G2

Prophase:

The chromosomes are visible,  centrioles are formed and begin to move to opposite sides. This is where you see the dissolving of the nuclear membrane.

Metaphase:

The chromosomes line up in the centre of the cell.

Anaphase:

This when the cell divides (should look like two circles splitting) you will see the spindles begin to shorten which pull chromatids apart.

Telophase:

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Hope this helps (:

Please rate thanks !

3 0
3 years ago
Dinosaurs disappeared from Earth 65,000,000 years ago. Express this number in scientific notation.
Nana76 [90]
6.5 x 10^7

Move the decimal point 7 spaces to the left.
5 0
3 years ago
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Which best describes the sex chromosomes in humans?
Amanda [17]

Answer: Option D )Males have two different chromosomes.

Explanation:

The human males have two different chromosomes known as the XY- chromosome. Hence, a human male child receives a Y chromosome from his father with XY, and a X chromosome from his mother with XX.

Females, on the other hand have similar chromosomes (XX-chromosome), each X received from each parent.

Thus, the XY-chromosome in human males make for two different chromosomes.

7 0
3 years ago
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What is an outcome of gene regulation
Ksivusya [100]

Answer:

<u>Homeostasis</u> is an outcome of gene regulation.

Explanation:

Gene regulation can be described as one of the vital processes through which maintenance of the body's internal conditions takes place. The mechanism of gene regulation monitors the production rate of a specific protein according to the requirements of the body. Almost every RNA or protein of the body needs regulation.

Homeostasis can be described as the maintenance of ideal conditions for the proper functioning of the body. The genes needed for maintaining homeostasis need to be properly regulated. For example, regulation of temperature, regulation of blood glucose level.

6 0
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What is the difference in the concentration of solutes between salt water and fresh water?
Alla [95]
Well, salt water contains various amounts of salts, meanwhile fresh water does not. However, that does not mean that animals and creatures thrive in one kind, but not the other, instead, both waters are capable of holding certain fish, microbes, and even plants. Hope this helps, please mark as brainliest if possible, thank you! :)
5 0
3 years ago
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