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iogann1982 [59]
3 years ago
14

Why is oxygen important to humans? *

Biology
2 answers:
AnnyKZ [126]3 years ago
8 0
B is the correct answer- the others don’t make sense
Solnce55 [7]3 years ago
5 0

Answer:

b is the answer

Explanation:

b is the answer

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Why is a dominant allele called dominant?
mamaluj [8]

Answer:

The correct option is <em>D. It dominates the phenotype.</em>

Explanation:

A dominant allele can be described as the allele which suppresses the effect of a recessive allele. A recessive allele can be described as the allele which gets masked by the dominant allele.

If the gene for a particular trait in an organism is heterozygous, then the organism will show the physical characteristic of the dominant trait. The recessive trait becomes suppressed and might be visible in the next generation if possible.

6 0
3 years ago
Phosphofructokinase (PFK) is an enzyme that converts fructose 6-phosphate to fructose 1,6-bisphosphate, by adding a phosphate gr
erica [24]

Answer:

D. Allosteric activator

Explanation:

In an enzyme, the allosteric site is a site/motif different from the active site, (i.e., the site with catalytic activity) which is able to interact with regulatory effector molecules in order to activate or inhibit enzymatic activity by influencing the tridimensional (3D) structure of the enzyme. An allosteric activator is an effector molecule with the ability to bind to a specific enzyme at a different site than the active site, thereby modifying the shape of the enzyme and increasing the affinity of this enzyme for its substrate. Moreover, Adenosine monophosphate (AMP) is a nucleotide composed of a phosphate group, a sugar ribose, and an Adenine (A) base. This effector molecule (AMP) has shown to allosterically stimulate diverse enzymes in physiological conditions (e.g., AMP-activated protein kinase).

5 0
3 years ago
Many plants such as orchids are grown by a technique called tissue culture. Small pieces of plant tissue from a leaf, stem, or r
vlada-n [284]
<span>Plant cells will also change with the degree of specialization. It means that when is is a higher developed organism then it will have a higher degree of specialization. For the second question,Somatic cells of animal callus are most common to the plant cell. It is because just like a callus, the tissue of the plant cells are thick and it serves them as protection from friction.</span>
5 0
4 years ago
Please help!! - 1. Is a virus a living organism? Why? 2. Why are antibiotics not good for virus infections? 3. What is the diffe
Alex777 [14]

Explanation:

No .because virus is molecule.

anti=against

bio=living

organ system is formed from the organs supporting each other process.

because they lost the connection.

immue system.

photosynthesis.

4 0
3 years ago
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Name a daughter cell type formed by the meiotic division of gamete mother cells of X ?​
tensa zangetsu [6.8K]

Answer:

Haploid

Explanation:

Each daughter cell is haploid, because it has half the number of chromosomes as the original parent cell.

4 0
3 years ago
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