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Quiz #1

Chapter 3: The Cell

True or False

1.)   Ribosomal subunits are produced in the cytoplasm F (Ribosomal units are produced in the nucleoli and then assembled in the cytoplasm)

2.)   The nuclear envelope dissolves during metaphase F (The Nuclear envelope dissolves during late prophase)

3.)   Proteins are packaged and processed in the smooth endoplasmic reticulum F (Rough ER)

4.)   Resting membrane potential is the difference between the charge average of the entire cell’s interior versus the charge average of the entire extracellular fluid F (The charge separation exists only at the plasma membrane)

5.)   Lysosomes are responsible for neutralizing substance such as alcohol and formaldehyde F (Peroxisomes)

6.)   During translation the ribosome scans for the start codon. The start codon’s base sequence is GCG F

7.)   Only one protein can be produced at a time from a single mRNA strand F

8.)   Introns are non coding sections of our genes not involved in the translation process T

9.) Molecules are the smallest living units in our body F (cells)

10.) The centrosome of human cells contains its own set of DNA and RNA F (Mitochondria)

11.)   The mitotic spindle is composed of

  1. Polar microtubules
  2. Polar microfilaments
  3. Kinetochore microtubules
  4. Both a and c

12.)Translation of mRNA into a protein is performed by ___________ in the __________

  1. The Endoplasmic reticulum, cytoplasm
  2. Nucleoli, nucleoplasm
  3. Ribosomes, nucleoplasm
  4. Ribosomes, cytoplasm

13.)Which of the following can pass through the plasma membrane by means of simple diffusion

  1. Lipid soluble hormones
  2. Carbohydrate molecules
  3. Glycogen
  4. Water soluble vitamins

14.) An anticodon is composed of ___________

  1. 3 Nucleotide bases
  2. an amino acid
  3. a tRNA molecule
  4. all of the above

15.) What would be the sequence of the following DNA strands complimentary mRNA molecule: AGCTGCA

  1. UCGACGU
  2. TCGACGT
  3. AGCTGCA
  4. None of the above

16.) A functional mRNA molecule made up of 210 nucleotide bases would produce a protein composed of how many amino acids?

  1. 210
  2. 30
  3. 70
  4. None of the above

17.) A protein is packaged and processed in the rough endoplasmic reticulum and destined for export from the cell. After leaving the Rough ER in a vesicle, where will this protein travel next

  1. The Smooth ER
  2. The Cis face of the Golgi Apparatus
  3. The trans face of the Golgi apparatus
  4. None of the above

18.)  A newly transcribed mRNA molecule will more closely resemble the _________ (with the exception of Uracil bases instead of Thymine bases)

  1. DNA Coding Strand
  2. DNA Template Strand
  3. Nucleosome
  4. None of the above

19.) Which of the following cells would display a highly developed smooth endoplasmic reticulum

  1. Cells that store calcium and metabolize lipids
  2. Cells that export proteins
  3. Cells that are active in phagocytosis
  4. All of the Above

20.) Left unchecked, a large ingestion of sodium would make the extracellular fluid ________, causing a net flow of water ______________the cell.

  1. Hypotonic, into
  2. Hypertonic, out of
  3. Hypertonic, into
  4. Hypotonic, out of

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This entry was posted on October 1, 2013 by in A & P Practice Quizes.
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