Answer:
e. whether or not the impulse begins in the CNS
Explanation:
Nerve impulse is action potential movement through the axon. Nerve impulse propagation has its velocity (speed at which nerve impulse travels down the axon) which depends on many factors. For example, myelination increases the conduction velocity. Also, the larger the diameter of an axon, the higher the velocity is. Nodes of Ranvier present on the axons, and myelin sheath between the nodes act as a good electrical insulator which also increases the velocity.
Answer: Option (a) is the correct answer.
Explanation:
It is known that weight is equal to mass times acceleration due to gravity.
Mathematically, Weight = mass × acceleration due to gravity
Since, it is given that weight is 34 N and it is known value of g is 9.8 m/s.
Therefore, calculate mass of the box as follows.
Weight = mass × acceleration due to gravity
34 N = mass × 9.8 m/s
mass = 3.47 kg
Hence, we can conclude that mass of the box is 3.47 kg.
Answer:
A starch molecule is like a reservoir of energy
Answer:
The correct answer is b. I and II
Explanation:
Sexual reproduction is present in higher forms of life and absent in prokaryotes like bacteria. Sexual reproduction results in greater evolutionary changes due to the fusion of two different gametes from two different individuals of a species.
Therefore sexual reproduction helps in increased genetic diversity in higher forms of life. In prokaryotes like bacteria, genetic diversity is maintained and increased through DNA transfer from one bacterial cell to another with the help of a process known as horizontal gene transfer.
Bacteria have sex pilli which is used to introduce the genes to the other bacteria. By this process, they increase their genetic diversity and evolve continuously. So the correct is b. I and II.
Protein
synthesis<span> is the process that provides the instructions to build
proteins. Enzymes in the cells nucleus
begin the process, or synthesizing the protein and unwinding the needed section
of DNA. <span>RNA is formed and copies one
side of the DNA,, it is then sent to other areas of the cell to bring different
amino acids to form proteins. </span></span>
