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Fittoniya [83]
4 years ago
10

How much DNA is located in an egg cell BEFORE fertilization?

Biology
2 answers:
natali 33 [55]4 years ago
6 0

Answer:

B. 50%

Explanation:

Viefleur [7K]4 years ago
4 0

Answer:

B

Explanation:

Gametes are haploid that contains 1 set of chromosomes.

To form a zygote, fertilisation occurs which causes the fusion of a sperm and an egg to form a diploid cell.

In each gamete, they contain 50 percent of the genetic material as compared to the zygote, fusing to form a zygote with 100 percent DNA after fertilisation.

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Answer:

b. Phosphofructokinase;  Fructose-1,6-bisphosphatase

Explanation:

Glucagon is a hormone which functions to initiate gluconeogenesis whwreas insulin functions to initiate glycolysis.

Fructose-2,6-bisphosphate (F26BP) is an allosteric regulator of the <em>glycolytic and gluconeogenic enzymes phosphofructokinase-1 (PFK-1) and fructose-1,6-bisphosphatase (FBPase-1).</em>

It stimulates glycolysis and inhibits gluconeogenesis by binding to its allosteric site on phosphofructokinase-1 reducing its affinity for the allosteric inhibitors ATP and citrate .

It is formed by phosphorylation of fructose-6-phosphate catalyzed by  <em>phosphofructokinase-2</em> and is broken down by <em>fructose-2,6-bisphosphatase </em>which are two separate enzymatic activities of a single, bifunctional protein (PFK-2/FBPase-2).

Phosphorylation of PFK-2/FBPase-2 due to glucagon release enhances its FBPase-2 activity thereby stimulating gluconeogenesis and inhibiting glycolysis.

Dephosphsorylation of PFK-2/FBPase-2 due to insulin release enhances its PFK-2 activity, thereby stimulating glycolysis and inhibiting gluconeogenesis.

3 0
4 years ago
1 Glucose is an example of a<br> sugar.
Dmitrij [34]

Answer:

Yes

Explanation:

Simple sugars are called monosaccharides, made up of single sugar molecules. Examples of these are glucose, fructose, and galactose. When two simple sugars are joined together by a chemical bond they are called disaccharides, the most common of which is sucrose or table sugar.

8 0
3 years ago
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To determine if you have identified a functional open reading frame (orf), you should have found __________ within the sequence.
HACTEHA [7]

The answer is a start codon. An open reading frame is a region of DNA with a span of nucleotides beginning with a start codon (usually ATG) and ends with a stop codon (usually, TGA, TAG, TAA). An open reading frame when translated, codes for a full functional protein hence can be used to predict genes.


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