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Home ‣ Biochemistry ‣ Cell Signalling and Transduction See What Others Are Saying!
- Question
In paracrine signaling, the signaling molecules affects only
Options- A. target cells close to the cell from which it was secreted
- B. target cells distant from its site of synthesis in cells of an endocrine organ
- C. both (a) and (b)
- D. none of the above
- Correct Answer
- target cells close to the cell from which it was secreted
- 1. Salt dissolves well in water as water molecules
Options- A. form hydrogen bonds with the positively and negatively charged ions
- B. make nonpolar covalent bonds with the positively charged ions only
- C. surround the ions because of their charge but do not form hydrogen bonds
- D. share electrons with the ions to make polar covalent bonds Discuss
- 2. What transports copper from the intestinal cells to the liver?
Options- A. Ceruloplasmin
- B. Secretin
- C. Acrolein
- D. Albumin Discuss
- 3. The sugar which forms major component of nucleic acids is
Options- A. ribose
- B. galactose
- C. mannose
- D. maltose Discuss
- 4. In aerobic respiration, the compound that enters a mitochondrion is
Options- A. acetyl CoA
- B. pyruvate
- C. phosphoglyceraldehyde
- D. oxaloacetate Discuss
- 5. What radioactive molecule is used to end-label an oligonucleotide?
Options- A. (alpha)-32P-ATP
- B. (alpha)-32P-dUTP
- C. (gamma)-32P-ATP
- D. Any of these Discuss
- 6. In Counter immunoelectrophoresis
Options- A. electrophoresis will drive the antibody and antigen parallel to each other
- B. electrophoresis will drive the antibody and antigen toward each other
- C. the antibody will migrate towards anode
- D. the antibody will migrate towards cathode Discuss
- 7. Cholesterol is somewhat amphipathic due to
Options- A. the single hydroxyl along with the hydrocarbon nature of the remainder of the molecule
- B. the long branched hydrocarbon along with the four hydrocarbon rings
- C. the five-methyl groups along with the hydrocarbon chain
- D. the three six-membered rings along with the single five-membered ring Discuss
- 8. The role of primase is to
Options- A. dismantle RNA primer
- B. cleave and unwinds short sections of DNA ahead of the replication fork
- C. proofread base pairing
- D. synthesize an RNA primer to begin the elongation process Discuss
- 9. The first protein complex to bind to the TATA box is
Options- A. transcription factor IIA
- B. transcription factor IIB
- C. transcription factor IID
- D. all of these Discuss
- 10. In an SDS-PAGE
Options- A. proteins are denatured by the SDS
- B. proteins have the same charge-to-mass ratio
- C. smaller proteins migrate more rapidly through the gel
- D. all of the above Discuss
More questions
Correct Answer: surround the ions because of their charge but do not form hydrogen bonds
Correct Answer: Ceruloplasmin
Correct Answer: ribose
Correct Answer: pyruvate
Correct Answer: (gamma)-32P-ATP
Correct Answer: electrophoresis will drive the antibody and antigen toward each other
Correct Answer: the single hydroxyl along with the hydrocarbon nature of the remainder of the molecule
Correct Answer: synthesize an RNA primer to begin the elongation process
Correct Answer: transcription factor IID
Correct Answer: all of the above
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