If a patient has a particular memory problem in which he can recall old memories but cannot make new memories, what part of his brain is most likely damaged?
A) Hippocampus
B) Thalamus
C) Basal ganglia
D) Prefrontal cortex
E) Temporal lobes
A
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List the primary germ layers formed by gastrulation. What tissues will they form in the adult?
Endoderm: Mesoderm: Ectoderm:
Biogeochemical cycles involve
A. the movement of chemicals through ecosystems. B. just those nutrients that are limiting for organisms. C. the nutrients used solely by primary producers D. all chemical elements plus light energy. E. None of these choices are correct.
Which of these events in translation in eukaryotes does NOT directly involve hydrolysis of GTP?
a. release of initiation factors b. binding of a proper aminoacyl tRNA with a codon at the A site c. formation of the peptide bond d. translocation of the ribosome along the mRNA e. all of these events directly involve GTP hydrolysis
Heterochromatin is associated with
A) differential gene expression. B) gene silencing. C) mRNA translation. D) heterozygotes. E) A, B, and C only