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4 years ago

2.) how do scientists predict the polarity of molecules? Pls help?!!

Biology

1 answer:

Juliette [100K]4 years ago

8 0

Electronegativity.

If the difference in electronegativity for the atoms in a bond is greater than 0.4, we consider the bond polar. If the difference in electronegativity is less than 0.4, the bond is essentially nonpolar.

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5. What type of bond can be found between complementary nitrogenous bases?

zzz [600]

They form hydrogen bonds between opposing dna which forms the twister ladder of dna

5 0

3 years ago

The skin consists of two distinct layers. The outer layer, the epidermis, consists of stratified squamous epithelium. The inner

Colt1911 [192]

The inner layer, the dermis, consists of a superficial papillary region of loose, areolar connective tissue, connective tissue and a thicker and deeper reticular region of dense irregular connective tissue connective tissue.

<h3>The layers of the skin</h3>

The skin is the largest peripheral organ that covers the outer layers of the body. It is made up of two layers namely:

Epidermis: The epidermis is the outer layer and it is made up of stratified squamous epithelium.

Dermis: The dermis is the inner layer of skin. it is made up of superficial and deep layers.

The superficial layer is made up of papillary region of loose areolar connective tissue which helps to attach epithelial tissue to other underlying tissues.

While the deep layer is made up of dense irregular connective tissue which provides strength, making the skin resistant to tearing by stretching forces from different directions.

Learn more about the skin here:

brainly.com/question/306377

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3 years ago

Why are ecological pyramids shaped as pyramids?

Sonja [21]

Ecological pyramids are drawn where predators are above prey and they show the population number of each organism shown. Therefore, as the pyramid rises, the population number of the organism decreases, ultimately resulting in a roughly pyramidal shape. Since, organisms higher up the food chain tend to be less numerous than those at the preceding trophic levels, the pyramid is often the classic pyramidal shape. The difference in numbers of organisms at different levels can be so great that logarithmic scales have to be used.

7 0

3 years ago

PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!!!!!!!!!!!!!!!!!!!PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!

sergejj [24]

Active Immunity is natural.

Passive Immunity is maternal.

Active Immunity from Vaccination.

Passive Immunity is Artificial.

Passive Immunity:

Does not require previous exposure to a disease agent

Takes effect immediately

Does not last long (up to a few months)

Active Immunity is produced inside of the body, whereas passive immunity is introduced from outside of the body.

Active Immunity is from direct infection and vaccination.

Passive Immunity is from Breast milk, Injection, Mother to baby through the placenta.

Active Immunity takes effect over time (typically several weeks).

Passive Immunity takes effect immediately.

Active Immunity's length of efficacy is Long-term to lifelong.

Passive Immunity is short-term.

Active Immunity is produced by memory cells, Passive Immunity is not.

Hope this was insightful and enough information.

6 0

3 years ago

Read 2 more answers

11. In single-gene traits, natural selection can lead to which of the following?

FrozenT [24]

That would be Directional Selection so the answer is D.

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3 years ago