White blood cells use __________ to get rid of

foreign particles in the blood.
a. simple diffusion
b. bulk flow
c. osmosis
d. phagocytosis
e. facilitated diffusion


Answer: d

Biology & Microbiology

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Movement in a specific direction in response to a stimulus is called a ____

Fill in the blank with the appropriate word.

Biology & Microbiology

As a chemical element moves through a biogeochemical cycle, it moves between "bio" and "geo". The "bio" in biogeochemical refers to biotic reservoirs, or __________

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

Biology & Microbiology

In eukaryotic cells, chromosomes are composed of both DNA and proteins

Indicate whether the statement is true or false

Biology & Microbiology

In 1938, scientists found a population of coelacanths in the Indian Ocean. This fish species is considered a "living fossil" and appears not to have changed morphologically for 80 million years. This discovery supports the ________ model of evolution.

A. punctuated equilibrium B. common descent C. gradualism D. natural selection E. adaptation

Biology & Microbiology