What is the gelatinous matrix inside chloroplasts that contains ribosomes, DNA, and enzymes?
A. granum
B. chlorophyll
C. thylakoid
D. stroma
E. mitochondria
D. stroma
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The splitting of water in photosynthesis
a. releases oxygen. b. results in accumulation of H+ inside the thylakoid. c. releases electrons. d. helps to fill an electron hole in the second photosystem. e. does all of these
A recessive trait will be observed in individuals that are ________ for that trait.
a) heterozygous b) homozygous or heterozygous c) homozygous d) diploid
Which of the following are examples of homologous structures?
A. Whale flipper and cat leg B. Human eye and octopus eye C. Bird and insect wings D. Body shape of sharks and dolphins E. Penguin wing and fish fin
Passive immunotherapy is used when
A) the attenuated live vaccine is too difficult to produce. B) the pathogen does not produce a toxin. C) the microorganism can be genetically manipulated. D) protection against a recent infection or disease is needed immediately. E) a representative antigen for the microbe cannot be isolated.