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What type of T cells tells B cells to begin producing antibodies?
Answers: 1
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Which of these is true of the cytoplasm of an unfertilized egg? a. it is an unevenly distributed mixture of mrna, proteins, organelles, and other substances. b. it does not contain substances that are important in directing development. c. these substances are supplied by the sperm. d. it does not contain substances that are important in directing development. e. development is directed solely by the surrounding cells. f. it is a homogeneous mixture of mrna, proteins, organelles, and other substances. g. it does not contain substances that are important in directing development. h. these substances are produced by the dna of the fertilized zygote.
Answers: 1
Biology, 22.06.2019 12:30
Describe the relationship between isotonic solutions, equilibrium, and water movement into and out of a cell.
Answers: 1
Biology, 22.06.2019 13:30
How do the sperm cells get from the stigma to the ovules? a. they slide down the petals to the bottom of the flower. b. they travel through pollen tubes. c. they travel along filaments. d. insects carry the sperm cells from the stigma to the ovules.
Answers: 3
Biology, 22.06.2019 15:40
Which of these is one of the nitrogenous bases in dna? a. proline b. leucine c. glycine d. thymine
Answers: 2
What type of T cells tells B cells to begin producing antibodies?...
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