The egg and sperm unite to form a zygote. To prevent the new organism from having twice as many chromosomes as its parents,

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the egg and sperm have only half the number of chromosomes found in the parents because of meiosis.

Biology & Microbiology

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Most seeds are dormant until

a. conditions are favorable. b. drastic conditions are present. c. the timing is right. d. conditions are favorable and the timing is right

Biology & Microbiology

Which of the following statements best describes ATP?

A. ATP is formed when energy is released during photosynthesis. B. When ADP + P becomes ATP, the amount of energy released is enough for a biological purpose. C. ADP is extremely high in potential energy. D. ATP is comprised of a sugar, base, and three phosphate groups.

Biology & Microbiology

Which mRNA below would code for a premature stop codon from the following amino acid sequence? N—Met-Gln-Leu-Arg-Cys—C

A) 5? - AUG CAG AUA GCG UGC UAG - 3? B) 5? - AUG AAG UUA GCG UGC UAG - 3? C) 5? - AUG CAG UAA GCG UGC UAG - 3? D) 5? - AUG CAG UUA UUG UGC UAG - 3? E) 5? - AUG CAG UUA GCG UGC AAG - 3?

Biology & Microbiology

Which elements are found in all carbohydrates, lipids, proteins, and nucleic acids?A) nitrogenB) carbonC) hydrogenD) oxygenE) phosphorusF) sulfur

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Biology & Microbiology