Which of the following is SOLUBLE in WATER? A. Hydrophobic or lipophilic molecul

Question

Which of the following is SOLUBLE in WATER? A. Hydrophobic or lipophilic molecules B. Hydrophilic or lipophilic molecules C. Hydrophobic or lipophobic molecules D. Hydrophilic or lipophilic molecules E. None of the above What is the DIFFERENCE between pre-mRNA and mRNA molecules? A. mRNA has only exons B. Pre-mRNA has only introns C. Similar to DNA, mRNA is also a double-strand nucleic acid molecule D. A& B E. A, B & C OXIDATIVE phosphorylation occurs _____ the beneficial end product is _____ A. in the outer mitrochondrial membrane: ATP B. in the cytoplasm just inside the plasma membrane: carbon dioxide C. twice during the citric acid cycle: ATP D. in the cytoplasm just inside the plasma membrane: oxygen E. in the inner mitrochondrial membrane: ATP Which of the following types of RNA molecules carries amino acids? A. rRNA B. tRNA C. mRNA D. A & B E. A, B & C Which of the following nitrogenous bases are called PURINES? A. Cytosine & thymine B. Adenine & thymine C. Cytosine, thymine& uracil D. Guanine & cytosine E. Adenine & guanine Which of the following is CORRECI about the fate of pyruvate/pyruvic acid in the ABSENCE of O_2? A. Pyruvic acid rightarrow lactic acid B. Pyruvic acid rightarrow acetyl CoA C. Pyruvic acid rightarrow NADH & FADH_2 D. A & B E. A, B & C Transcription of the DNA TRIPLET 3'-ATC-5' (on the template strand) yields what? A. 3'-TAG-5' on the DNA B. 3'-UAG-5' on the mRNA C. 5'-TAG-3' on the DNA D. 5'-UAG-3'on the mRNA E. All of the above Which of the following transport cholesterol to the liver for elimination? A. High-density lipoproteins (HDLs) B. Low-density lipoproteins (LDLs) C. Chylomicrons D. A & B E. A, B & C

Explanation / Answer

24. B. Hydrophilic or lipophobic molecules

25. A. mRNA only has exons

26. E. in the inner membrane; ATP

27. A. rRNA (as it is ribosomal, it is associated with amino acids. mRNA only carrier the code for the amino acids, not the amino acids themselves)

28. E. Adenine and guanine

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