Which of the following basic cell processes is NOT required for creating a tissue?
A. cell division and differentiation
B. cell connections
C. cell morphology
D. cell death
E. cell migration
C. cell morphology
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A basic difference between gymnosperms and flowering plants is:
a. gymnosperms produce seeds that are enclosed within a fruit, while flowering plants produce seeds borne naked. b. gymnosperms produce flowers that have floral parts arranged in threes, or multiples of threes, while flowering plants have floral parts arranged in fours or in multiples of four. c. gymnosperms produce only cones, while flowering plants produce both flowers and cones. d. gymnosperms produce seeds borne naked, while flowering plants produce seeds enclosed within a fruit. e. gymnosperms produce “naked” ovules, while flowering plants produce “naked” seeds.
Two sea urchin proteins were named cyclin A and B because, during the embryonic cell cycle, they were periodically
a. activated and inactivated by phosphorylation and dephosphorylation. b. synthesized and degraded. c. bound and released by another protein. d. ubiquitylated and non-ubiquitylated.
During the citric acid cycle, ____.
A. four CO2 molecules are produced B. oxaloacetate is consumed C. electrons and H+ are removed from the coenzymes NADH and FADH D. molecules of carbon dioxide are consumed E. oxidative phosphorylation occurs
Which of the following is mismatched?
A) pharyngitis — sore throat B) laryngitis — voice loss C) epiglottitis — sore throat D) sinusitis — headache and nasal mucous E) otitis media — earache