Answers Rated A+.
Which of the following best describes the logic of hypthetico-deductive method? - Answer If
my hypothesis is correct, I can expect certain test results.
To be of value to science, hypotheses must be _____. - Answer testable and falsifiable
What is E. coli? - Answer a bacterium
What is an example of a hypothesis? - Answer Male birds with long tails have more mates
than male birds with short tails.
You drink a glass of lemonade, but your body's pH does not change. This is an example of how
organisms - Answer maintain homeostasis
Cystic fibrosis is a genetic disease in humans in which the CFTR protein, which functions as a
chloride ion channel, is missing or nonfunctional in cell membranes. The CFTR protein belongs
to what category of membrane proteins? - Answer hydrophilic channels
In order for a protein to be an integral membrane protein it would have to be what? - Answer
amphipathic
The plasma membranes of Antarctic ice fish might have which adaptations? - Answer
phospholipids with a high percentage of unsaturated fatty acid tails
A biologist is studying nervous tissue of a frog. She wants to examine different layers of the
tissue to determine where neurons are most abundant in relation to glial cells. Which would be
the optimum method for her study? - Answer confocal microscopy with fluorescence
You are working on a team that is designing a new drug. In order for this drug to work, it must
enter the cytoplasm of specific target cells. Which of the following would be a factor that
determines whether the molecule selectively enters the target cells? - Answer similarity of the
drug molecule to other molecules transported by the target cells
, Which of the following is most likely to have a lipid composition that is distinct from the other
four? ER, plasma membrane, mitochondria inner membrane, lysosome membrane, Golgi -
Answer mitochondrial inner membrane
Asbestos fibers can be inhaled. Cells with phagocytose the foreign material, but are unable to
degrade it. As a result, asbestos fibers buildup in which of the intracellular organelles? - Answer
Lysosomes
________ aid in the coordination of the activities of adjacent eukaryotic cells - Answer
plasmodesmata and gap junctions
What path does a protein in the secretory pathway take, starting from its site of synthesis? -
Answer rough ER, golgi, secretory vesicles, plasma membrane
What is NOT true of saturated fats? - Answer They have multiple double bonds ion the carbon
chains of their fatty acids
How many molecule of water are needed to completely hydrolyze a polymer that is 11
monomers long? - Answer 10 molecules
In a normal cellular protein, where would you expect to find a hydrophobic amino acid like
valine? - Answer in the interior of the folded protein, away from water, or in a transmembrane
portion interacting with lipid fatty acid chains
What type of covalent bond between amino acid side chains (R groups) functions in maintaining
a polypeptide's specific three-dimensional shape? - Answer disulfide bond
In an experiment studying photosynthesis performed during the day, you provide a plant with
radioactive carbon dioxide. The carbon is first incorporated into oxaloacetate. The plant is best
described as a - Answer C4 plant
The process of photosynthesis is an example of - Answer a pathway in which the entropy of
the system increases and an anabolic pathway
assume a thylakoid is somehow punctured so that the interior of the thylakoid is no longer