The primate fossil named Lucy was ____.

A. a Neanderthal
B. an australopith
C. a Denisovan
D. a prosimian
E. a modern human


Answer: B

Biology & Microbiology

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The word gymnosperm means ____

a. covered seed b. active sperm c. naked egg d. naked seed e. covered sperm

Biology & Microbiology

Energy losses are multiplied in successive energy transfers in a food web

Indicate whether the statement is true or false.

Biology & Microbiology

There are how many different kinds of amino acids

in proteins? a. 3 b. 6 c. 12 d. 20 e. 28

Biology & Microbiology

Heavy metals work by

A. inactivating proteins. B. binding to DNA. C. mutating DNA. D. dissolving the cell wall. E. rupturing the cell membrane.

Biology & Microbiology