If four genes are in the same region of a eukaryotic chromosome, then
A) the four promoters must be oriented such that two genes are transcribed using the Watson strand as a template and two genes use the Crick strand.
B) the four promoters must be oriented such that all four genes are transcribed using the same strand as the template.
C) the four promoters may be oriented such that some of the genes are transcribed using the Watson strand as template, and others use the Crick strand.
D) the genes can be transcribed from different strands only if their promoters are more than 1 kilobase apart.
E) the genes must be in a gene family.
C) the four promoters may be oriented such that some of the genes are transcribed using the Watson strand as template, and others use the Crick strand.
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When comparing the genetic characteristics between embryonic and adult stem cells, embryonic stem cells
A. are collected from the testes and ovaries, while adult stem cells are collected from other tissues. B. are produced naturally in human development, while adult stem cells are from cloning. C. There is no real genetic difference between embryonic and adult stem cells, except how they were collected. D. can't differentiate into any specialized cells, while adult stem cells can. E. can differentiate into any specialized cells, while adult stem cells can't.
Temperature
What will be an ideal response?
Fungi that grow as yeast at one temperature but will grow as mold at another temperature are called
A. saprobes. B. pseudohyphae. C. Fungi Imperfecti (Deuteromycota). D. dimorphic. E. spores.
During a surgical procedure, a patient suddenly has a major hemorrhage. How will the blood distribution to different organs change after the hemorrhage?
A. The blood supply to the brain and skin will decrease more than the blood supply to the heart, other muscles, and adipose tissue. B. The blood supply to all organs will increase equally. C. The blood supply to the whole body will decrease equally. D. The blood supply to skin and adipose tissue will decrease more than the blood supply to the brain and heart.