The part of the eye that may be colored (e.g., brown, blue, green, or gray) is the
a. retina.
b. sclera.
c. choroid.
d. cornea.
e. iris.
E
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Suppose a gene from a cow is introduced into a frog. This results in a ________ transgene
Fill in the blank(s) with correct word
Which one of the following is TRUE regarding water?
A) Each molecule of water consists of two atoms of hydrogen and one atom of oxygen covalently bonded to each other. B) The oxygen side of the water molecule is partially positive. C) Water is a type of ion. D) Electrons are shared equally between the atoms of water. E) Water molecules are attracted to each other by ionic bonds.
Proteins that function as a catalyst
A) slow down the speed at which chemical reactions occur but do not alter the final products formed. B) facilitate chemical reactions by altering the final products formed. C) maintain primary structure. D) can participate only in reactions that synthesize new products. E) are referred to as enzymes.
DNA polymerase, before any proofreading by repair enzymes, makes one mistake for about every
A) 10,000 to 1 million base pairs. B) 100 million to 10 billion base pairs. C) 1 million to 10 million base pairs. D) 1 to 100 base pairs. E) 100 to 1,000 base pairs.