List at least three levels or types of genetic regulation in eukaryotes
What will be an ideal response?
Transcriptional regulation, DNA methylation, posttranscriptional regulation, and posttranslational regulation.
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When oxygen is depleted, the citric acid cycle stops. Which of the following would you need to add to the system to restore activity? Indicate all that apply
A. glucose B. NAD+ C. NADH D. FAD E. acetyl-CoA
Which of the following does NOT apply to the sex chromosomes X and Y?
a. They are included in an organism's karyotype. b. They look different and carry different genes. c. They are autosomes. d. The nonhomologous pair is thought to have evolved from a homologous pair 250 million years ago.
Why do transcription and translation take place in two different locations?
A) DNA is located in the nucleus, whereas the ribosomes needed for translation are not in the nucleus. B) DNA is located in the nucleus, whereas the ribosomes needed for transcription are found outside the cell. C) Translation takes place in the nucleus, whereas the DNA is located elsewhere. D) DNA is located in the nucleus, whereas the ribosomes needed for translation are found outside the cell.
A nerve whose fibers conduct impulses only away
from the central nervous system is a. exclusively motor. b. exclusively sensory. c. motor or sensory depending on body location. d. a spinal nerve. e. a cranial nerve.