Enzymes act as

A. substrates.
B. catalysts.
C. products.
D. catabolites.


B

Biology & Microbiology

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Which of the following is not a type of tissue found in an animal?

A. ground B. connective C. epithelial D. muscle

Biology & Microbiology

The figure shows the evolution of HIV and SIV. Choose the true statements about the evolution of HIV (Select all that apply).



_____  All strains of HIV are included within clades with SIV strains.
_____  A strain of HIV is never more closely related to another strain of HIV than it is to a SIV strain.
_____  Humans acquired different subtypes of HIV from different primate hosts.
_____  HIV-1 group O is more closely related to SIV-chimpanzee than SIV-gorilla.
_____  All strains of SIV are included within clades with HIV strains.

Biology & Microbiology

Cardiovacular disease is linked to gum disease or __________

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

Biology & Microbiology

The homeless in the United States are at increased risk of undernutrition. Which of the following is true about the homeless?

Select one: a. Most of them are alcoholics. b. Most of them are lazy. c. Many are members of families with children. d. All are poorly educated.

Biology & Microbiology