Cell biology Thank you so much 28. Referring to the codon table, the boxed nucle

Question

Cell biology Thank you so much 28. Referring to the codon table, the boxed nucleotides on the mRNA above would correspond to code? A. what (anino cids ar in sing ?. "STOP" C. "D" 29. The nuclear DNA polymerases in human cells A. Fall off and reattach to the template repeatedly during polymerization B. Are incapable of 3'-to-5' exonuclease activity C. Are capable of 3'-to-5 DNA polymerase activity. D. Are unable to initiate polymerization de novo (i.e. in the absence of a primer), 30. During DNA replication in the cell, DNA primase makes short primers that are then extended by the replicative DNA polymerases. These primers A. are made up of DNA. B. are made more frequently in the leading strand than the lagging strand C. are joined to the neighboring DNA by DNA ligase. D. provide a 3'-phosphate group for the DNA polymerases to extend. 31. You are interested in analyzing which gene's chromatin structure is altered upon treatment of mice with dnugs of abuse. The specific alteration is modification of lysine 9 on histone H3. What reagent would you need to studty which genes have this alhered histone by CHIP-SEQ? A. A primer to modified histone H3 B. A cDNA clone to modified histone H3 C. A genomic clone to modified histone H3 D. An antibody to modified histone H3 32. A coiled coil is a protein structure in which an alpha helix may self-associate into a dimer. One surface of the helix will contain hydrophobie residues that will promote dimerization which the other surface will contain charged or polar residues expesed to the solvent. Which sequence below most likely has the properties of a coiled coil? A. LKELAKA B. HGKCSAK C. DESPLSM D. RHGPMSC 33. Imagine a protein that has been engineered to contain a nuclear localization signal and an endoplasmic reticulum (ER)sigal sequence. There is no transmembrane domain and the protein has no sequence to allow assembly in COPlI coated vesicles. Where would you expect to find the protein after its synthesis? A. Cytosol B. Nucleus C. Mitochondria D. Endoplasmic reticulunm 34. Once expressed in a neuron in the mouse brain and subjected to a flash of light, how does channelrhodopsin affecte potential? affect the membrane A. It depolarizes the membrane. the membrane.

Explanation / Answer

29. The nuclear DNA polymerase is capable of synthesizing new strand of DNA in 3'–5' direction, Hence , C is correct.

30.DNA primers are made up of either DNA or RNA (small stretch of 18-20 nucleotide). Hence, a is correct.

32. As, amino acids lysine, glutamate, methionine, alanine, leucine are likely to occur more in helix coil. Hence, option a is correct.

33. The protein will likely to found in Endoplasmic reticulum as proteins are synthesized in ribosomes. Hence, d is correct.

34. Channelrhodopsin depolarizes plasma membrane, hence, option a is correct.

Related Questions

Navigate

• Browse (All)
• Browse C
• Subjects

---

---

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