You, as a Cell Biologist, Discover That There Is Strong

question 42

Multiple Choice

You, as a cell biologist, discover that there is strong evidence that chloroplasts, found in plant and algal cells, are descended from bacteria but not eukaryotes. What theory would explain this finding?

• A) macroevolution
• B) endosymbiont
• C) back to front
• D) bottleneck

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Definitions:

Lymphocytes

A subclass of white blood cells vital to the immune system, involved in producing antibodies and destroying infected or cancerous cells.

Adaptive Immunity

Adaptive Immunity refers to the immune system’s ability to recognize and specifically target foreign invaders, such as viruses and bacteria, through antibodies and specific immune cells.

Antigens

Substances, often foreign, that induce an immune response in the body, especially the production of antibodies.

Interferon

A type of protein produced by cells in response to viral infections, functioning as part of the immune response to inhibit virus spread.