D: A new gene, which codes for the protein that can repair defective genes, is introduced.
Answer:
The mitotic cell division results in more cells that allow growth of the organism because of mitosis. Mitosis is when a single cell divides into two identical daughter cells. The major purpose of mitosis is for growth and to replace worn out cells.
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Explanation:
a cell wall
B.
a plasma membrane
C.
genetic material
D.
cytoplasm
A border that exists outside the plasma membrane or cell membrane is the cell wall. It only exists in plant cells and is composed of cellulose. In a cell of an animal, it is absent. Thus, option A is correct.
Plant cells have a cell wall that surrounds their plasma membrane and offers tensile strength as well as defense against osmotic and mechanical stress.
Additionally, it enables the development of turgor pressure, or the pressure of the contents of the cell against the cellwall.
Animals lack cell walls, but most other eukaryotes, such as algae, fungus, and plants, as well as most prokaryotes, do (except few bacteria).
Serving as pressure channels, they prevent the cell from over expanding when water enters, which is one of their main roles.
Therefore, cell wall is not present in all organism.
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Answer:
The nucleic acids (DNA and RNA)
Explanation:
DNA as the genetic material which located in nucleus
RNA the number cellular activities
The chronic disease that causes abnormal enlargement of the extremities due to excessive secretion of growth hormone after puberty is known as acromegaly. This disorder is due to imbalances in growth hormones, causing abnormal growth in adults, notably in the bones of the face, hands, and feet.
The rare chronic disease characterized by abnormal enlargement of the extremities caused by the excessive secretion of growth hormone after puberty is referred to as acromegaly. The disease is due to the dysfunction of the endocrine system's control of growth, resulting in different disorders.
In acromegaly, excessive GH is secreted in adults who have stopped growing. This causes the growth of bones in the face, hands, and feet. A similar condition in children, triggered by abnormally high levels of GH, is gigantism resulting in excessive growth. A balanced production of growth hormone is essential for proper development, and any imbalances can lead to such conditions.
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B) The genome is DNA based and double stranded.
C) The genome is RNA based and single stranded.
D) The genome is RNA based and double stranded.
Answer:
A) The genome is DNA based and single stranded.
Explanation:
The reason why it is DNA based is because DNA contains thymine base (T). It is not RNA based because RNA contains uracil base (U) instead of thymine and in the given question there is not uracil mentioned.
It is single stranded because according to Chargaff's rule a double stranded nucleic acid must have the ratio of purine bases to pyrimidine ratio as 1:1.
Adenine (A) & Guanine (G) are purine bases while Thymine (T) & Cytosine (C) are pyrimidine bases so according to Chargaff's rule AG/CT = ~ 1. It means [A+G] = [C+T]
Also, A makes interaction with T while C makes interaction G. It means,
[A] = [T]
[C] = [G]
By this we can easily infer that a double stranded DNA will have as much A as much it has T & same goes with C & G.
But, in the given question, A = 33% while Thymine = 28% which are not equal so this means that this molecule is single stranded.