The process by which mitochondria are thought to have arisen during evolution is called

a. symbiosis.
b. phagocytosis.
c. endosymbiosis.
d. autophagocytosis


Ans: c. endosymbiosis.

Biology & Microbiology

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Most strains of gonococcus do not survive long outside the body

Indicate whether this statement is TRUE or FALSE.

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One adaptation to flight in birds is lighter bones, which lack 

A. collagen. B. medullary cavities. C. calcium. D. the periosteum. E. bone marrow.

Biology & Microbiology

The branch of microbiology that deals with the mechanisms by which the human body protects itself from disease-causing organisms is called ________.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

Tendons are bands of connective tissue that attach _______ to _______.

A. muscle; bone B. ligaments; bone C. muscle; muscle D. bone; bone E. cartilage; bone

Biology & Microbiology