Beta cells in the pancreas produce and secrete the protein hormone insulin. You would expect to see a relatively large amount of which organelles in these cells?
A) cytoskeleton, and peroxisomes
B) mitochondria, and cilia
C) Golgi apparatus, rough endoplasmic reticulum
D) smooth endoplasmic reticulum, and lysosomes
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Question 2) Myocardium (cardiac muscle tissue) must rhythmically contract for a lifetime. This requires a considerable amount of energy production by the cells. You would expect to see a relatively high amount of which organelle in these cells?
A) cytoskeleton
B) smooth endoplasmic reticulum
C) mitochondria
D) lysosomes
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Question 3) When tissues are injured or infected, chemical signals can be releases that affect the plasma membrane of cells that line the nearby blood vessels.
These blood vessels cells (endothelial cells) respond to the chemical signals by displaying a type of glycoproteins on their surface. These proteins will attach to circulating white blood cells bringing them to the site of injury or infection. These glycoproteins would best be described as ________.
A) desmosomes
B) G-proteins
C) transport proteins
D) Cell Adhesion Molecules (CAMs)
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Question 4) Which of the following would NOT assist in establishing a resting membrane potential?
A) Having greater concentration of glycolipids on the outside surface of the membrane.
B) Selective diffusion allowing more uncharged particles into the cell.
C) Selective diffusion allowing more positively charged ions to diffuse out of the cell.
D) Selective diffusion allowing fewer positively charged ions to diffuse into the cell.
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Question 5) A type of transport protein found in the plasma membrane of cells lining the inside of the intestine allows sodium ions to diffuse down their concentration gradient. The ions move through the transport protein, and into the cell.
These transport proteins will use the kinetic energy of the diffusing sodium ions to bring glucose into the cells as well. This transport protein would best be described as ________.
A) a carrier protein
B) a symporter
C) a pump
D) a channel
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Question 6) If a cell is selectively reducing the concentration of a particular enzyme in the extracellular fluid it will likely utilize ________.
A) phagocytosis
B) pinocytosis
C) receptor-mediated endocytosis
D) exocytosis
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Question 7) If a cell is non-selectively engulfing samples of extracellular fluid, for example to absorb nutrients, it will likely utilize ________.
A) phagocytosis
B) pinocytosis
C) receptor-mediated endocytosis
D) exocytosis
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Question 8) A cell engulfing a relatively large particle will likely utilize ________.
A) phagocytosis
B) pinocytosis
C) receptor-mediated endocytosis
D) exocytosis
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Question 9) Which of the following would not be restricted (limited) by low levels of ATP?
A) exocytosis
B) pinocytosis
C) phagocytosis
D) osmosis
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Question 10) If active transport establishes a concentration gradient with the use of ATP, then the concentration gradient can be looked at as ________.
A) potential energy that can be harnessed when molecules passively diffuse down the concentration gradient
B) a byproduct of active transport that will be alleviated by pinocytosis
C) an unusable byproduct of active transport that will simply diffuse away
D) unwanted pressure that will be alleviated by channel mediated facilitated diffusion
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