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Mrac [35]
3 years ago
5

Q16.A needle can be made to "float" on the surface tension of water. What causes this surface tension to form?

Biology
1 answer:
Sunny_sXe [5.5K]3 years ago
6 0

Answer:

B

Explanation:

Water has surface tension due to cohesion that allows it to 'stick' together. This cohesion is created by the fact that water is polar and has unequal distribution of charges. The oxygen becomes slightly negative as it is surrounded by positive hydrogen. In turn, the hyrdogen becomes slightly positive.

This means that the hydrogen molecule is temporarily attracted to the oxygen of another molecule. This causes surface tension and allows light objects to float on top of it

Hope this helps!

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DNA will condense into
aniked [119]

Answer: DNA condenses into chromosomes.

Explanation: Chromatin carefully packs these DNA molecules into stringy-looking structures called chromosomes. If the DNA molecules in cells were not snaked around histones, the molecules would be 6 feet long when placed end-to-end, according to the National Human Genome Research Institute.

3 0
3 years ago
Read 2 more answers
In rabbits, short hair (S) is dominant over long hair (s). What genotype and phenotype ratios are
Kazeer [188]

Answer:

Genotype                  Phenotype                      

SS                 1/4          Short hair         3/4

Ss                 2/4         Short hair          3/4

ss                  1/4          Long hair          1/4

Explanation:

The resulting off-spring would have the following genotype and phenotype:

1 out of 4 will have a genotype of SS.

2 out of 4 or half will have a genotype of Ss.

1 out of 4 will have a genotype of ss.

But because short hair is dominant the phenotype ratios would differ because Ss and SS would express short hair, so we add up their ration:

Short hair: 1/4 + 2/4 = 3/4

Long hair:  1/4

3 0
3 years ago
Cultural traits are transmitted horizontally and vertically through learning. which of the examples below shows the horizontal t
hram777 [196]

Answer;

-A teenager teaches her brother how to text (same generation).

Explanation;

-Cultural trait is a characteristic of human action that's acquired by people socially and transmitted via various modes of communication.Culture is the integrated pattern of human knowledge, belief and behavior. Every society has its own particular culture.

-Vertical transmission occurs from parents to offspring and is a function which shows that the probability that parents of specific types give rise to an offspring of their own or of another type. Horizontal transmission is cultural transmission taking place among peers in a given population.


6 0
3 years ago
A cell with 22 chromosomes undergoes mitosis. How many nuclei result from this process?
kondor19780726 [428]

Answer:

Explanation:

Mitosis is the phase of the cell cycle where the nucleus of a cell is divided into two nuclei with an equal amount of genetic material in both the daughter nuclei. It succeeds the G2 phase and is succeeded by cytoplasmic division after the separation of the nucleus.

5 0
2 years ago
Another layer of connective tissue, called the ____________ , extends inward from the epimysium and separates the muscle tissue
Lisa [10]
The layer of connective tissue, called the _perimysium_ , extends inward from the epimysium and separates the muscle tissue into small sections. these sections contain bundles of skeletal muscle fibers called _fascicles_ .
Additionally, bundles of contractile proteins called fibrils fill a muscle cell, called a fiber. Outside of each fiber, is the connective tissue endomysium. Bundles of fibers form fascicles, surrounded by perimysium. Bundles of fascicles and perimysium comprise the entire muscle organ, which is enclosed by epimysium.
3 0
3 years ago
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