In which type of mammal do a mother and her embryo exchange materials by means of an organ developed from embryonic membranes?
A. Monotremes
B. Egg-laying
C. Pouched
D. Marsupial
E. Placental
Answer: E
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The use of selected culture media and incubation conditions to isolate microorganisms from samples is known as a(n)
A) differential culture. B) selective culture. C) enrichment culture. D) sensitive culture.
Where would you expect to find the receptor for a nonpolar ligand?
A. on the cell surface B. in the nucleus of the cell C. in the cytosol D. either in the nucleus of the cell or in the cytosol
How does an adherens junction differ from a desmosome?
A. Adherens junctions connect a cell to neighboring cells, and desmosomes connect a cell to the extracellular matrix. B. Adherens junctions connect cells using adherin proteins, and desmosomes connect cells with cadherin proteins. C. While both adherens junctions and desmosomes connect cells by using cadherin proteins, only adherens junctions connect to the cytoskeleton. D. While both adherens junctions and desmosomes connect cells by using cadherin proteins, adherens junctions connect to microfilaments while desmosomes connect to intermediate filaments inside the cell. E. These two types of junctions only differ in their band-like versus button-like architecture in the plasma membrane.
What is the part of a sarcomere that contains only thin filaments?
A) Z line
B) H band
C) I band
D) A band