Kool-Aid readily dissolves in water. This means that Kool-Aid is
a. an acid.
b. hydrophilic.
c. hydrophobic.
d. a base.
e. a buffer.
B
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Primary protein structure is formed by
a. hydrophobic interactions. b. hydrogen bonds. c. bonds between amino acids. d. covalent linkages between carbon and oxygen. e. all of these.
Which one of the following is NOT directly involved in the production of a typical spinal reflex?
A) brain B) sensory neuron C) motor neuron D) interneuron E) stimulus
Traits are critical in the study of phylogeny because:
a. A phylogenetic tree is a hypothesis about evolutionary relationships. b. We need to use observation of traits to infer patterns of ancestry and descent among popula-tions. c. By mapping individual traits onto a phylogeny we have already created, we can study the se-quence and timing of evolutionary events. d. B and C. e. A and C.
What factor has the strongest influence on the cleavage pattern of an embryo?
A. Maturity of cytoplasm B. Oxygen in air C. Amount of yolk D. Viscosity of albumin