Hello there, the correct answer is:
B.
Answer:
typical magnification of an ocular lens is 10x. there are other settings used less frequently such as, 4x, 40x, and 100x.
Explanation:
Answer:
Option (C).
Explanation:
Membrane potential may be defined as the difference in the electric potential of the inside and outside of the cell. The resting membrane potential of neuronal cell is -70mV.
Pufferfish contains tetrodotoxin that blocks the voltage gated sodium channels. The movement of sodium ions inside the cell causes the depolarization of cell and makes the cell membrane potential towards more positive. This tetrodotoxin causes the normal resting potential but the cell are not able to depolarize if the stimulus is given to the cell.
Thus, the correct answer is option (c).
Answer:
Mutations <u>deletion</u><u> </u>are always harmful. add new genes to a gene pool. are never beneficial to survival. give organisms what they need to survive.
Explanation:
It may be randomly like:
□caused by the mutation of a single gene.
OR
□genetic disorders include cystic fibrosis, sickle cell anemia, Tay-Sachs disease, phenylketonuria and color-blindness, among many others.
Earthworms maintain homeostasis by having a dual circulatory system, which contains the closed circulatory system and the coelomic fluid for respiratory gases, food and waste.