Which of the following is NOT produced by various sites of the endoplasmic retic

Question

Which of the following is NOT produced by various sites of the endoplasmic reticulum? A. Proteins B. Fatty acids C. Phospholipids D. Steroids E. mRNA Where does TRANSCRIPTION occur in the cell? A. Ribosomes B. Nucleoplasm C. Cytosol (or cytoplasm) D. A & B E. A, B & C Which of the following catalyzes TRANSLATION? A. Golgi apparatus B. Both roughs & smooth endoplasmic reticulum C. Plasma membrane D. Ribosomes E. Nuclear envelope Genetic information stored in the nucleus is TRANSCRIBED and TRANSLATED into what? A. Proteins B. Nucleic acids C. Carbohydrates D. A & B E. A, B & C ATP SYNTHASE transfers the _____ energy of the protons (H^+) to the high-energy phosphate bond of _____ A. potential: NADH B. kinetic: ATP C. potential: FADH_2 D. kinetic: NADH E. potential: ATP Which of the following defines gluconeogenesis? A. Producing glucose from glycerol and/or amino acids B. Converting glucose to storage as adipose tissue C. Removing fairy acids from adipose storage D. A & B E. A, B & C NEURONS rely primarily on _____ for their energy needs. A. amino acids B. glucose C. lipids D. glycogen E. fatty acids Which of the following enzymes catalyzes the FIRST step of glycolysis? A. Hexokinase B. Glucose-6-phosphatase C. Pyruvate dehydrogenase D. A & B E. A, B & C

Explanation / Answer

(Since you have posted several questions together, I am answering only the first four)

40. E. mRNA is produced by the nucleus, not endoplasmic reticulum.

41. B. Transcription i.e. the synthesis of mRNA based on the DNA template takes place in the nucleoplasm within the nucleus of the cell.

42. D. Ribosomes contain a catalytic core made up of ribozymes (RNA with catalytic activity) that catalyze translation.

43. A. Genetic information is stored as DNA , which is first transcribed to RNA and then translated into proteins.

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