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Serhud [2]
3 years ago
5

Write any two important of measurement​answer fast

Biology
1 answer:
SVETLANKA909090 [29]3 years ago
8 0
It’s importance in science and chemical industry
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Which of the following factors does not affect membrane permeability?
hram777 [196]

Answer:

a. The polarity of membrane phospholipids.

Explanation:

Phospholipids are the amphipathic lipids with polar heads and non-polar tails. The non-polar tails of two lipid layers form the core of the membrane while their heads are oriented towards both of the faces of the membrane. The polarity of the phospholipids does not affect the transport of substances. If a membrane has more of the saturated phospholipid tails in its core, the tight packing of the tails makes the membrane less permeable for large and polar substances.

On the other hand, a membrane with a greater proportion of unsaturated hydrocarbon tails in its core is more permeable. Cholesterol is also an amphipathic sterol and moderates the fluidity of membrane and thereby affects its permeability. A more fluid membrane is more permeable than a more solid membrane. Temperature affects the membrane polarity by affecting the membrane fluidity.

7 0
3 years ago
List two examples of temporary change in human​
Paladinen [302]

Answer:

#IN GIRLS

* adolsence

* menstruation

#IN BOYS

* penis strts turning big

*beard starts coming of face

6 0
3 years ago
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What statement correctly describes a phospholipid in the plasma membrane
Flauer [41]
The head loves Water, Tail hates it
7 0
4 years ago
What effect does the presence of oxygen have on the events that follow glycolysis
Sedaia [141]
The effect that the presence of oxygen have on the events that follow glycolysis would be that <span>if oxygen is present the process can move to cellular respiration; using oxygen yields much more ATP. Hope this helps. Have a nice day.</span>
6 0
3 years ago
Which of the following modifications is least likely to alter the rate at which a DNA fragment moves through a gel during electr
zhuklara [117]

Answer:

A) altering the nucleotide sequence of the DNA fragment

Explanation:

Gel electrophoresis is a technique to separate the DNA fragments on the basis of their charges and size. DNA fragments are made to migrate through a gel in an electric field. DNA has nucleotides and the presence of phosphate groups makes it a negatively charged molecule. In the gel electrophoresis, DNA fragment migrates through the gel toward the positive pole. Also, the gel slows down the large molecules more than the small molecules. Therefore, the DNA fragments are separated by size. However, the sequence of the nucleotide of DNA fragments does not affect the rate of their migration in the gel.

7 0
4 years ago
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