Organisms that may cause red tide are
A.
green algae.
B.
brown algae.
C.
dinoflagellates
D.
euglenids.
C
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The major way that meiosis II differs from mitosis is that
A. in meiosis II, the homologous sister chromatids align at the metaphase plate as a tetrad. B. in meiosis II, a pair of sister chromatids move to the pole. C. in meiosis II, the daughter cells are haploid. D. in meiosis II, a synaptonemal complex is formed. E. in meiosis II, the homologues separate.
Figure "A" in the accompanying figure is a ____
a. cotyledon b. cladode c. corm d. eudicot leaf e. monocot leaf
In Alzheimer’s disease , neurons that secrete which neurotransmitter are particularly affected?
a. epinephrine b. dopamine c. serotonin d. acetylcholine e. GABA
DNA associates very tightly with nucleosomes because
A. DNA can form covalent bonds with histone proteins. B. negative charges on DNA are attracted to positive charges of the histone proteins. C. the histone tails wrap tightly around the DNA double helix. D. the amino acids of histone proteins are largely acidic, while DNA molecules are basic. E. histone H1 tightens the coils of DNA that are wrapped around the nucleosome.