When the ovum and sperm cells unite and fertilization has occurred, what has just been formed?

a. the fetus
b. the embryo
c. the blastocyst
d. the zygote

Answer: D

Psychology

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Fromm believed that, as humans have gained more freedom by transcending nature and other animals, they have

a) minimized feelings of despair. b) developed safeguards to preserve their freedoms. c) felt increasingly separate and isolated. d) become emotionally closer to their animal roots.

Psychology

Which neurotransmitter is implicated in the development of depressive disorders?

a. serotonin b. endorphins c. peptides d. acetylcholine e. somatostatin

Psychology