The answer is B cells. They are part of the adaptive immune response following an immune attack. They produce antibodies (immunoglobulins) that target particular epitopes and antigens. This is especially true for the memory B cells that can identify an antigen they've engaged before and produce, very fast, antibody response against the antigen.
D (the fourth option)
The inner folds of a membrane in mitochondria are called cristae
Answer:
TEMs can magnify objects up to 2 million times
Explanation:
The genotype of the offspring would be homozygous recessive. If you used pea pod height for example, the parents' traits would be (T=tall t=short) tt and tt. After you complete your Punnet Square the offspring would be 100% short.