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3 years ago

HELP ASAP 20 POINTS!!!!!!!!!!!! 2 ANSWERS

Biology

2 answers:

HACTEHA [7]3 years ago

8 0

Answer:

Nitrogen, Calcium

Explanation:

im pretty sure.

Vaselesa [24]3 years ago

7 0

Answer:

A, and D

Explanation:

its the answer I believe

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the small size of the phytoplankton gives them the benefit of . It also , which maximizes their ability to absorb nutrients.

Ivan

Answer:phytoplanktons are photosynthestic organism. They have the ability to produce their own food.

Explanation: Because of there small size they could absorb nutrients in the water even at lower concentration and convert it to energy need for there growth.

Its is said that phytoplanktons are one of the largest producer of oxygen gas.

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3 years ago

Which lifestyle choices lead to good health? Check all that apply.

Neporo4naja [7]

Answer:

Yes, you are correct! C,D and E are correct

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3 years ago

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7. The energy of carbohydrates is stored in

LuckyWell [14K]

Answer: D. Peptides

Explanation:

6 0

3 years ago

The vector, which is often a small, circular piece of dna that can exist outside the bacterial chromosome, is known as what?.

kramer

The vector, which is often a small, circular piece of dna that can exist outside the bacterial chromosome, is known as a plasmid.

Bacteria and certain other microscopic species contain plasmids, which are tiny circular DNA molecules. Physically distinct from chromosomal DNA, plasmids multiply on their own. They normally contain only a few genes, including some linked to antibiotic resistance, and they can spread from one cell to another.

Recombinant DNA techniques are used by scientists to splice the genes they want to research into a plasmid. The inserted gene is duplicated along with the plasmid when it duplicates itself. Molecular cloning, the process of creating DNA molecules and introducing them into a host cell, uses plasmid vectors as the means of delivering recombinant DNA into the host cell.

To know more about plasmids, refer to the following link:

brainly.com/question/7826558

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3 0

1 year ago

In hamsters, we can examine the genes for coat color and eye color which are linked:B = brown coat, b = white coat, G = green ey

Inessa [10]

Answer:

10.2 cM

Explanation:

Given,

pure breeding parent 1 : BBgg = brown coat and pink eyes

pure breeding parent 2 : bbGG = white coat and green eyes

BBGG X bbgg = F1 = BbGg ( All are brown with green eyes )

When F1 progeny is test crossed with white coat and pink eyes hamster:

BbGg X BbGg = F2 =

brown, pink eyes = 99 = parental

white, green eyes = 103 = parental

brown, green eyes = 12 = recombinant

white, pink eyes = 11 = recombinant

Recombination frequency =

(total number of recombinants / total progeny ) * 100

= [( 11 + 12 ) / ( 99 + 103 + 12 + 11 )] * 100 = (23/225)*100 = 0.102 * 100 = 10.2 %

1 % recombination frequency = 1 cM distance between genes

Hence, the distance between B and G gene is 10.2 cM

4 0

3 years ago