Normal human body cells contain how many chromosomes?
a. 22
b. 23
c. 46
d. 44
e. 42
C
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The whole-genome shotgun approach is useful for sequencing small bacterial genomes but has failed in the case of larger eukaryotic genomes such as those of Drosophila and human.
Answer the following statement true (T) or false (F)
If an injection to the mouse contains live R strain Streptococcus pneumonia, _____
a. the mouse will die b. live S strain will be detected in the mouse's blood c. the mouse will live d. no live R strain will be detected in the mouse's blood e. the live R strain bacteria will develop pathogenicity
If a cofactor is not protein but another kind of organic molecule it is called a(n)
A. regulator lipid. B. coenzyme. C. substrate. D. catalyst.
Isotopes are atoms of the same element that differ in
A) the number of protons and electrons found in the atom. B) the number of protons found in the nucleus. C) the number of protons and neutrons found in the nucleus. D) the number of electrons orbiting the nucleus. E) the number of neutrons found in the nucleus.