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Anatomy and Physiology

Review Questions

Anatomy and PhysiologyReview Questions

6.

Because they are embedded within the membrane, ion channels are examples of ________.

  1. receptor proteins
  2. integral proteins
  3. peripheral proteins
  4. glycoproteins
7.

The diffusion of substances within a solution tends to move those substances ________ their ________ gradient.

  1. up; electrical
  2. up; electrochemical
  3. down; pressure
  4. down; concentration
8.

Ion pumps and phagocytosis are both examples of ________.

  1. endocytosis
  2. passive transport
  3. active transport
  4. facilitated diffusion
9.

Choose the answer that best completes the following analogy: Diffusion is to ________ as endocytosis is to ________.

  1. filtration; phagocytosis
  2. osmosis; pinocytosis
  3. solutes; fluid
  4. gradient; chemical energy
10.

Choose the term that best completes the following analogy: Cytoplasm is to cytosol as a swimming pool containing chlorine and flotation toys is to ________.

  1. the walls of the pool
  2. the chlorine
  3. the flotation toys
  4. the water
11.

The rough ER has its name due to what associated structures?

  1. Golgi apparatus
  2. ribosomes
  3. lysosomes
  4. proteins
12.

Which of the following is a function of the rough ER?

  1. production of proteins
  2. detoxification of certain substances
  3. synthesis of steroid hormones
  4. regulation of intracellular calcium concentration
13.

Which of the following is a feature common to all three components of the cytoskeleton?

  1. They all serve to scaffold the organelles within the cell.
  2. They are all characterized by roughly the same diameter.
  3. They are all polymers of protein subunits.
  4. They all help the cell resist compression and tension.
14.

Which of the following organelles produces large quantities of ATP when both glucose and oxygen are available to the cell?

  1. mitochondria
  2. peroxisomes
  3. lysosomes
  4. ER
15.

The nucleus and mitochondria share which of the following features?

  1. protein-lined membrane pores
  2. a double cell membrane
  3. the synthesis of ribosomes
  4. the production of cellular energy
16.

Which of the following structures could be found within the nucleolus?

  1. chromatin
  2. histones
  3. ribosomes
  4. nucleosomes
17.

Which of the following sequences on a DNA molecule would be complementary to GCTTATAT?

  1. TAGGCGCG
  2. ATCCGCGC
  3. CGAATATA
  4. TGCCTCTC
18.

Place the following structures in order from least to most complex organization: chromatin, nucleosome, DNA, chromosome

  1. DNA, nucleosome, chromatin, chromosome
  2. nucleosome, DNA, chromosome, chromatin
  3. DNA, chromatin, nucleosome, chromosome
  4. nucleosome, chromatin, DNA, chromosome
19.

Which of the following is part of the elongation step of DNA synthesis?

  1. pulling apart the two DNA strands
  2. attaching complementary nucleotides to the template strand
  3. untwisting the DNA helix
  4. none of the above
20.

Which of the following is not a difference between DNA and RNA?

  1. DNA contains thymine whereas RNA contains uracil
  2. DNA contains deoxyribose and RNA contains ribose
  3. DNA contains alternating sugar-phosphate molecules whereas RNA does not contain sugars
  4. RNA is single stranded and DNA is double stranded
21.

Transcription and translation take place in the ________ and ________, respectively.

  1. nucleus; cytoplasm
  2. nucleolus; nucleus
  3. nucleolus; cytoplasm
  4. cytoplasm; nucleus
22.

How many “letters” of an RNA molecule, in sequence, does it take to provide the code for a single amino acid?

  1. 1
  2. 2
  3. 3
  4. 4
23.

Which of the following is not made out of RNA?

  1. the carriers that shuffle amino acids to a growing polypeptide strand
  2. the ribosome
  3. the messenger molecule that provides the code for protein synthesis
  4. the intron
24.

Which of the following phases is characterized by preparation for DNA synthesis?

  1. G0
  2. G1
  3. G2
  4. S
25.

A mutation in the gene for a cyclin protein might result in which of the following?

  1. a cell with additional genetic material than normal
  2. cancer
  3. a cell with less genetic material than normal
  4. any of the above
26.

What is a primary function of tumor suppressor genes?

  1. stop all cells from dividing
  2. stop certain cells from dividing
  3. help oncogenes produce oncoproteins
  4. allow the cell to skip certain phases of the cell cycle
27.

Arrange the following terms in order of increasing specialization: oligopotency, pleuripotency, unipotency, multipotency.

  1. multipotency, pleuripotency, oligopotency, unipotency
  2. pleuripotency, oligopotency, multipotency unipotency
  3. oligopotency, pleuripotency, unipotency, multipotency
  4. pleuripotency, multipotency, oligopotency, unipotency
28.

Which type of stem cell gives rise to red and white blood cells?

  1. endothelial
  2. epithelial
  3. hematopoietic
  4. mesenchymal
29.

What multipotent stem cells from children sometimes banked by parents?

  1. fetal stem cells
  2. embryonic stem cells
  3. cells from the umbilical cord and from baby teeth
  4. hematopoietic stem cells from red and white blood cells
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