26. Which of the following is true? A. Cells transcribe and translate every gene

Question

26. Which of the following is true? A. Cells transcribe and translate every gene they have, but only activate proteins that they need B. All cells in your body have the same DNA, but function differently because they turned only a subset of their genes on through differential gene expression. C. Mature cells have different DNA because they only carry the genes they need for their job. D. Cells transcribe every gene they have, but only translate those that they need. 27. We studied the Netherlands Famine study and how it illustrated epigenetics. What specifically is happening to the DNA in an epigenetic sense? A. a fat group is added to the histone to activate the gene B. a sugar is added to a proteins to activate it C. a methyl group is added to a cytosine in the DNA strand thus silencing the gene D, mediators bind to the enhancer region to turn a gene on 28. For some proteins, a a sugar or phosphate group is added to the protein. This is done during which part of gene expression? A. transcription B. RNA processing C.translation D. post translational modification 29. Athletes who abuse anabolic steroids often demon strate different effects such as muscle growth, loss of libido and aggression. How can this be explained at the cellular level? A. Testosterone is a repressor of genes controlling these traits. B. Testosterone is binds to different receptors and turns on a variety of genes controlling these traits C. Testosterone adds a methyl group to the DNA turning genes on D. Testosterone blocks enzymes which control these traits

Explanation / Answer

26. B. All cells in the body have the same DNA but function differently because they turn only a subset of genes on through differential gene expression.

27. C. A methyl group is added to the cytosine in the DNA strand thus silencing the gene.

28. D. Post translational modification.

29. B.Testosterone binds to the different receptors and turns on variety of genes controlling these traits

Related Questions

Navigate

• Browse (All)
• Browse 2
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.