Human cells have

A. 23 pairs of chromosomes.
B. 23 chromosomes.
C. 46 pairs of chromosomes.
D. 2 pairs of sex chromosomes.
E. one pair of autosomes.


A. 23 pairs of chromosomes.

Biology & Microbiology

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Ergotism _____

a. results from inhalation of fungal spores b. produces hallucinations and convulsions c. affects only those with weak immune systems d. all of the above

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Molecular hydrogen is an example of which type of molecule?

a. polar covalent b. nonpolar covalent c. ionic d. coordinate covalent e. network

Biology & Microbiology

The centrioles are highly conserved chromosome regions that interact with spindle fibers during cell division

Indicate whether the statement is true or false

Biology & Microbiology

When a mutation occurs during DNA replication, ____ replaces the incorrect nucleotide with the correct one after the

mismatched nucleotide has been removed. a. mismatch repair enzymes b. DNA ligase c. DNA polymerase d. telomerase e. helicase

Biology & Microbiology