Commensalism is a type of ____

a. predation
b. symbiosis
c. active competition
d. scramble competition
e. competitive exclusion


ANSWER: b

Biology & Microbiology

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In DNA the purines are

a. thymine and cytosine. b. adenine and cytosine. c. adenine and guanine. d. thymine and adenine. e. guanine and thymine.

Biology & Microbiology

The umbilical cord functions to

a. carry waste products in the blood from the fetus to the mother. b. carry waste products in the blood from the mother to the fetus. c. carry oxygen in the blood from the mother to the fetus. d. do both a and c.

Biology & Microbiology

The human genome consists mostly of noncoding DNA

Indicate whether the statement is true or false

Biology & Microbiology

You have isolated a new organism which has eukaryotic cells, is multicellular, grows as hyphae, does not perform photosynthesis, and has a cell wall. This organism most likely belongs to which kingdom?

A) Protista B) Bacteria C) Fungi D) Archaea E) either Fungi or Protista

Biology & Microbiology