The nucleus is to eukaryotes as the ________ is to prokaryotes.
A. plasmid
B. RNA strand
C. ribosome
D. nucleoid
E. nucleolus
D. nucleoid
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Denaturation disrupts the secondary and tertiary structure of proteins. However, denaturation is not strong enough to disrupt what interaction that is relevant to protein structure?
A. ionic bonds B. hydrophobic exclusion C. peptide bonds D. van der Waals attraction E. hydrogen bonds
What embryo-produced hormone maintains progesterone and estrogen secretion by the corpus luteum through the first trimester of pregnancy?
A) luteinizing hormone (LH) B) follicle-stimulating hormone (FSH) C) progesterone D) human chorionic gonadotropin (hCG) E) gonadotropin-releasing hormone (GnRH)
The human retina has several layers of cells/tissues in the eye. What is the order of appearance of these cells from the front (where light hits first) to the back of the eye?
A. rods and cones; bipolar cells; pigmented epithelium; ganglion cells B. ganglion cells; bipolar cells; rods and cones; pigmented epithelium C. rods and cones; ganglion cells; bipolar cells; pigmented epithelium D. pigmented epithelium; rods and cones; ganglion cells; bipolar cells
Two proteins, Rag-1 and Rag-2, catalyze VDJ recombination. What is the likely outcome of a deletion of the Rag genes?
A. mild susceptibility to infection due to T cell defects B. increased antibody diversity from B cells C. severe combined immunodeficiency (SCID) of both B and T cells D. increased resistance to infection due to enhanced B and T cell function Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about the VDJ segments? What other information is related to the question? Choose Answer Given what you now know, what information is most likely to produce the correct answer? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?