Hormones must be present at high concentrations to elicit an effect.
Answer the following statement true (T) or false (F)
False
Hormone concentrations in the blood can be as low as 10-10 M.
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The following mRNA transcript would result in which polypeptide sequence?
5?-ACU UUC ACU AUG UUU UUA UCC UCC ACU CCU UGA-3? Use the following codons and the amino acids they encode. AUG = Start or Met; UUU, UUC = Phe; UUA, UUG = Leu; UCU, UCC = Ser; CCU, CCC = Pro; ACU, ACC = Thr; UGA = Stop. A. Thr-Phe-Thr B. Phe-Leu-Ser-Ser-Thr-Pro C. Met-Phe-Leu-Ser-Ser-Thr-Pro D. Thr-Phe-Thr-Phe-Leu-Ser-Ser-Thr-Pro E. Met-Phe-Leu-Ser-Ser
Which of the boxed subsets of the DNA molecule pictured below consists of a nucleotide?
1.1
2.2
3.3
4.4
5.5
Retrotransposons are genetic elements that move through an RNA intermediate
1.True 2.False
The metaphase stage of mitosis is characterized by the
A. arrangement of chromosomes along a line. B. arrangement of chromosomes on a plane. C. division of the centromeres. D. duplication of genetic information.