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14 Cards in this Set
- Front
- Back
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Water diffuses through certain organs such as the kidneys and bladder much faster than would occur by passive diffusion through a lipid bilayer alone. What is special about plasma membrane composition of these organs that accounts for this more rapid rate of water transport?
Select one: -Presence of an ATP-driven enzyme for water transport -Presence of aquaporin channels for facilitated diffusion of water -The composition of lipids changes to promote water transport |
Presence of aquaporin channels for facilitated diffusion of water |
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Fluorescent proteins are used in microscopy because...Select one:
-jellyfish are good subjects for microscopy. -they are genetically encoded and can be used to highlight organelles in living cells. -they can be used to stain sections of kidney. |
they are genetically encoded and can be used to highlight organelles in living cells.
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Which of the following is not found in prokaryotic cells?Select one: -plasma membrane -ribosomes -nucleus -pili -DNA |
nucleus |
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Which one of the following pairs is mismatched?Select one:
-Golgi apparatus / modification, processing, and sorting of macromolecules -cell membrane / lipid bilayer -nucleus / DNA replication -lysosome / protein synthesis |
lysosome / protein synthesis
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Which of the following is NOT true of the plasma membrane?Select one:
-The membrane contains glycolipids and glycoproteins -The membrane contains peripheral proteins -The extracellular and intracellular layers or leaflets are highly symmetrical -Integral proteins span the membrane |
The extracellular and intracellular layers or leaflets are highly symmetrical
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Which one of the following statements about the flagella of eukaryotic cells is false?Select one:
-they function in cell locomotion -they are composed of a ‘9 plus 2’ arrangement of microtubules -they are identical in structure to the flagella of prokaryotic cells -they are powered by the motor protein dynein -they derive from a basal body lying just within the cell boundary |
they are identical in structure to the flagella of prokaryotic cells
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Which cytoskeletal structures represent a highly diverse group of tension-bearing fibers important to the maintenance of cell shape?Select one:
-intermediate filaments -centrioles -microfilaments -pili -microtubules |
Intermediate filaments |
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Rosemary and Peter Grant studied the theory of evolution by...Select one:
-raising Galapagos finches to see if their beak sizes would become similar after several generations. -working with David Lack to write a book called 'The beak of the finch'. -doing several years of empirical examination of Galapagos finch beak sizes across generations. |
doing several years of empirical examination of Galapagos finch beak sizes across many generations.
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The origin theory of the mitochondrion and chloroplast by endosymbiosis states that these organelles originated by...Select one:
-prokaryotic cells being engulfed and becoming external symbionts within an early bacteria cell. -the absorption of DNA from dead prokaryotic cells used as food. -prokaryotic cells being engulfed and becoming internal symbionts within an early eukaryotic cell. |
prokaryotic cells being engulfed and becoming internal symbionts within an early eukaryotic cell.
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In 1909, Charles Walcott discovered fossils in the Burgess Shale of the Canadian Rockies. The area was formed by an underwater mudslide that provided an oxygen free environment, so decomposition was minimal. Why were these fossils so unique?Select one:
-They were from the Cambrian period. -Only vertebrate animals were found as no invertebrate animals, or plants existed at that time. -There were soft bodied animals fossilised. |
They were soft bodied animals fossilised |
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Study of the origin of life has resulted in the breakdown of cellular development into overlapping stages. Which of these stages were a focus of study for Miller and Urey in their FIRST experiment?Select one:
Stage 5: Ribosomes were developed inside the membrane. Stage 2: Nucleotides became polymerized to form RNA and/or DNA, and amino acids became polymerized to form proteins. Stage 1: Nucleotides and amino acids were produced prior to the existence of cells. |
Stage 1 |
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The island fox, Urocyon littoralis, is only found on the Channel Island off the coast of California. This species is not found on the mainland where the gray fox, Urocyon cinereoargenteus, lives. Urocyon littoralis is considered to be...Select one:
-extinct. -a transitional form. -endemic to the island. -an ancestral form. -exotic. |
endemic to the island |
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Evolution is...Select one:
-heritable change in a species over many generations as proposed by Wallace and Darwin. -the classification of species as first done by Ray and Linnaeus. -heritable change in a species over many generations as proposed by Lamarck and Darwin. |
heritable change in a species over many generations as proposed by Wallace and Darwin.
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A protobiont...Select one:
-contains polymers that store information. -has a boundary, contains polymers that store information and other polymers that act as enzymes, and it can replicate itself. -has polymers that have enzymatic functions. -has a boundary and contains polymers inside that store information. -has a boundary, or membrane. |
has a boundary, contains polymers that store information and other polymers that act as enzymes, and it can replicate itself.
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