What products of light reactions of photosynthesis are used in the Calvin cycle?
A. oxygen and protons
B. carbon dioxide and water
C. ATP and NADPH
D. ADP and NADP
E. glucose and oxygen
C. ATP and NADPH
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Modification enzymes typically methylate specific bases within the recognition sequence to prevent digestion of the nucleotide sequence by restriction endonucleases
Indicate whether the statement is true or false.
If nondisjunction occurs in an egg cell and the resulting egg is short a chromosome number 21, what will happen after fertilization?
1.The child will be born with Down’s syndrome. 2.The child will be born normal. 3.The zygote will not develop and will result in a miscarriage. 4.Fertilization cannot take place since there are not enough chromosomes.
All of the following are taproots that are consumed as vegetables EXCEPT
A. radishes. B. celery. C. beets. D. carrots. E. turnips.
Which cell becomes a macrophage when leaving the bloodstream?
A. monocyte B. lymphocyte C. basophil D. eosinophil E. neutrophil