Maintaining life on earth<span />
(a) is false since antibodies are produced by body humoral immune system
<span>After release into the synaptic cleft, neurotransmitters interact with receptor proteins on the membrane of the postsynaptic cell,
causing ionic channels on the membrane to either open or close. When
these channels open, depolarization occurs, resulting in the initiation
of another action potential</span>
Answer: (c) can undergo self-renewing divisions for the lifetime of a healthy animal.
Explanation:
The adult hematopoietic tissue or adult hematopoietic stem cells can be found in bone marrow of the animal. These cells have the ability to regenerate and renew so that the production of red blood cells remains continuous till death. Hematopoiesis can be defined as the production of cellular components of blood. The adult hematopoietic stem cells are located in the flat bones and ends of the long bones.
Answer: i believe it is mutation
Explanation: An insertion mutation occurs when an extra nucleotide is added to the DNA strand during replication. This can happen when the replicating strand "slips," or wrinkles, which allows the extra nucleotide to be incorporated (Figure 2). Strand slippage can also lead to deletion mutations.
