I’m pretty sure you can google them lol
Answer: b. DNA
Explanation:
DNA is a genetic material commonly found in all living beings. It is present in a thread like structure that is called as the chromosome. The DNA is double helical structure which exhibits the segments of small units called as the genes. The gene is a hereditary material which encodes for a particular protein. Each gene is responsible for determining a particular trait in living beings.
Answer:
Growth hormone.
Explanation:
Human growth hormone is a polypeptide hormone that regulates the growth, cell metabolism and cellular differentiation. The hypo or hyper secretion of this hormone can cause a particular disease in the individual.
The long-term hyposecretion of the growth hormone during childhood and adolescence can lead to the dwarfism. The individual has shorter height than the normal individual in dwarfism.
Thus, the correct answer is option (c).
Answer:
The answer is B: All the muscle cells innervated by a single motor neurorn.
Explanation:
It is called a motor unit, all muscle fibers that are innervated by a motor neuron cell. A motor neuron cell can establish contact with up to 150 muscle fibrils, which when activated causes their simultaneous contraction, therefore, all the muscle fibers of a motor unit contract and relax at the same time.
