The smallest functional units of matter that cannot be further broken down by ordinary chemical or physical means are

A. bonds.
B. atoms.
C. shells.
D. proteins.
E. molecules.


Answer: B

Biology & Microbiology

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Atoms containing a specific number of protons are called:

A. molecules B. minerals C. metals D. elements

Biology & Microbiology

The uncoiled DNA in a eukaryotic cell is much longer than the cell itself

Indicate whether the statement is true or false

Biology & Microbiology

How many different type of amino acids are found in proteins?

A. 100 B. 200 C. 1,000 D. 20 E . 4

Biology & Microbiology

The ________ is the distance between the center of a lens and the point at which it focuses parallel beams of light.

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

Biology & Microbiology