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yKpoI14uk [10]
3 years ago
5

Primary productivity is the rate at which

Biology
1 answer:
Olegator [25]3 years ago
8 0

Answer:

A

Explanation:

Primary productivity, in ecology, the rate at which energy is converted to organic substances by photosynthetic producers.

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When neurons "fire," the first thing that happens is that sodium ions enter the cell. this does not require an input of energy.
Karo-lina-s [1.5K]

Answer;

One can infer that membrane transport proteins are required in order for neurons to fire.

Explanation;

Transport proteins are proteins that transport substances across biological membranes. Transport proteins are found within the membrane itself, where they form a channel, or a carrying mechanism, to allow their substrate to pass from one side to the other.

-Transport proteins transport materials such as; ions such as sodium and potassium; sugars such as glucose; proteins and messenger molecules; and many more. In neurons, they  play a fundamental role in the functioning of nerve cells. These transporters, a third class of membrane transport proteins, move a wide variety of ions and molecules across cell membranes.

5 0
3 years ago
What is a soil horizon
ololo11 [35]
<span>A soil horizon is a layer parallel to the soil surface</span><span>, whose physical characteristics differ from the layers above and beneath</span>
6 0
3 years ago
Snapdragons are popular garden plants that produce brightly colored flowers. When a plant that is homozygous for white flowers i
elena-s [515]

Explanation:

Incomplete dominance is an intermediate effect of the dominance where the allele for a trait does not express its complete effect of a paired allele as a result both the alleles show their equal effect on the trait.

The generations are produced having a third trait as observed in the case of snapdragon flowers. In the case of flowers  

The allele which  

1. Determines the red color will be- R

2. Determines the white color will be- r

The monohybrid cross will have parents with genotypes:  

1. Red flower- RR

2. white flower-rr

The F₁ generation will have offsprings with genotype-  

RR X rr = Rr (Pink flower)

The F₂ generation will have offsprings with-  

Rr x Rr= RR, Rr and rr.

5 0
3 years ago
In the parental generation, inbred black and an albino mice parents mate. The resulting F1 mice are black and heterozygous at 2
Semenov [28]

Answer:

12:4:3

Explanation:

Let the lack of color pigmentation which is recessive be aa where AA and Aa allow for color (BB, Bb - black, baby - white).

The F1 parents are BbAa x BbAa

This cross will produce 12/16 blacks, 4/16 albinos and 3/16 white.

7 0
3 years ago
An estuary collects sediments from the ocean and rivers that feed into it. The sediments swirl around and then settle to form a
AlexFokin [52]

Answer:

money

Explanation:

6 0
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