The cell walls of some ________ are composed of minerals such as calcium carbonate
A) archaea
B) bacteria
C) algae
D) fungi
E) bacteria and fungi
C
Bloom's Taxonomy: Comprehension
Section: Eukaryotic Cell Walls and Cytoplasmic Membranes
Learning Outcome: 3.31
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Which of the following molecules would not readily cross an intact cell membrane by simple diffusion?
A) water B) glucose C) oxygen D) fatty acids E) ethanol
T cells will begin to secrete cytokines when bound to a(n) ____
a. MHC-antigen complex b. receptor-antigen complex c. antigen directly bound to the surface of a transport vesicle d. antigen-antibody complex e. bacterial pathogen
The functions of cell vacuoles include deterring predators, managing wastes, and producing flashy pigments to attract pollinators. What additional services can vacuoles provide?
A) harvesting energy and modifying proteins B) synthesizing lipids and processing proteins C) providing structural strength and producing sugar D) producing lipids and storing extra DNA E) storing nutrients and physically supporting the surrounding cell
At what point during development does the embryo form three germ layers?
A. when the nervous system develops B. when it forms the inner cell mass C. when it becomes recognizable as human D. when it begins cleavage E. when it forms the gastrula