The activation of T cells suggest.

a) Innate immunity
b) Naturally acquired active immunity
c) Naturally acquired passive immunity
d) Non-specific immunity


Answer: b) Naturally acquired active immunity

Biology & Microbiology

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The initial symptoms of bacterial meningitis are the same regardless of the causative agent

Indicate whether this statement is TRUE or FALSE.

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During normal DNA replication, part of the DNA at the ends of linear chromosomes is not copied into

the new DNA strands because

a. DNA ligase cannot join pieces at the end of a chromosome. b. RNA primers at the beginning of a new strand cannot be replaced with DNA. c. those ends are Okazaki fragments that are lost. d. cells do not need the DNA at the ends of chromosomes. e. the ends of chromosomes are made of protein, not DNA.

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During which stage of development does implantation occur, followed by initial development of the nervous system, limb buds and all other systems?

a. critical period b. sensitive period c. embryonic period d. fetal period

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How does the fossil record support the theory of evolution?

What will be an ideal response?

Biology & Microbiology