Which of the following is an amine hormone important in the stress response in vertebrates?
A. dopamine
B. melatonin
C. cortisol
D. epinephrine
E. serotonin
D. epinephrine
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For flowers, which of the following is NOT a
possible combination?
a. complete and perfect b. complete and imperfect c. incomplete and perfect d. incomplete and imperfect e. more than one of these is NOT a possible combination
The West African black rhino, one of four subspecies of rhinoceros, was declared extinct in 2006. Their horns were believed by many to hold medicinal value. What is the most likely reason for the extinction of the West African black rhino?
A. pollution B. habitat loss C. climate change D. introduced species E. overexploitation
Which of the following terms is correctly matched with its description?
A) Insertion mutations: Occur when a cell adds one or more nucleotides to its genome sequence. B) Point mutations: Occur when an incorrect carbohydrate is added. C) Deletion mutations: Occur when one or more amino acids are removed from a protein sequence. D) Substitution mutations: Occur when an incorrect fatty acid is added. E) Substitution mutations: Occur when an incorrect amino acid is added.
An advantage of (attenuated/inactivated/subunit) vaccines is that they usually elicit cell-mediated immune responses.
Fill in the blank(s) with the appropriate word(s).