Chemistry of Life
Cell Structure and Function
Multiple Choice from across the content
Skills and Practices
Miscellaneous BAM!
100
WHY water molecules are able to 'climb the walls' of these cells
b/c water is polar covalent and the xylem is non-polar so adhesion takes place btwn the molecules
100
this specific organelle's key function (the only functions of this that you need to aware of) include building lipids & detoxification of the cell
smooth ER
100
The active transport pump used to move Na+ across the membranes of gill cells in freshwater fish has each of the following characteristics EXCEPT: (a) requires energy; (b) it has a specific bonding site for sodium ions; (c) it is a protein; (d) it uses osmosis to carry ions into the cell; (E) it has a specific binding site for ATP
(d) uses osmosis to carry sodium ions
100
This diagram shows an experimental set up using dialysis tubing at the start of an experiment. After three hours glucose can be detected outside of the tubing but starch cannot. The best explanation for this final scenario is...
pores of the bag are larger than the glucose molecules but smaller than starch so the glucose escapes but starch does not
100
these organisms have a cell wall exterior to the plasma membrane and has no defined nucleus
prokaryotes
200
these monomers all have the same chemical formula C6H12O6, why do they have different properties?
isomers
200
correct functions include folding and chemical modification for newly synthesized proteins and packaging for protein trafficking.
Golgi Apparatus
200
The CFTR protein is made of 1,480 amino acids. Some humans produce a version of CFTR protein in which an amino acid is deleted from position 508. Which of the following best predicts how the deletion will affect the structure of the protein? (a) no observable effect on structure; (b) affect the primary structure only; (c) affect the secondary and tertiary structure only; (d) affect the all three levels of the protein's structure
(d) affect the all three levels of the protein's structure
200
the approximate molarity of the solution in which plant pieces are isotonic to their environment
what is 0.3 M
200
the specific metabolic process that is shown here is known as 
catabolism
300
the specific portion of this amino acid that contributes to the hydrophobic behavior of this section of a polypeptide
what is the methyl group (CH3)
300
Na+ is being transported out of the cell by active transport, this requires...
ATP hydrolysis
300
The efficiency of oxygen exchange is being considered in an experiment. Other conditions being equal, which artificial cell is likely to be the most efficient at exchanging oxygen with the atmosphere? (a) tetrahedral; (b)cuboidal; (c) cylindrical; (d) spherical
(b) cuboidal
300
the three structures indicated by the arrows work together to...
what is synthesize and secrete proteins
300
what emergent property of water is depicted here
surface tension
400
a description of the properties of the numbered regions 
1 & 3 are polar b/c the membrane molecules are aligned with water
2 is nonpolar b/c fatty acids will not dissolve in water
400
The chloroplast demonstrates how compartmentalization of cellular structures works to isolate key processes. These two processes are compartmentalized within which regions of the cholorplast
light reactions in the thylakoid membrane and Calvin cycle in stroma
400
A typical bag of fertilizer contains high levels of N, P, and K but trace amounts of Mg and Ca. Which of the following best matches the fertilizer component that will be incorporated by the organisms in the area? (a) P will be incorporated into the aa; (b) N will be incorporated into nucleic acids; (c) K will be incorporated into lipids; (d) Mg will be incorporated into carbohydrates
(b) N will be incorporated into nucleic acids
400
...this graph shows the rate at which the contractile vacuole is contracted to pump excess water OUT of a cell while the cells were immersed in solutions with different osmolarities. a summary of what is going on in this graph...
what is as osmolarity increases, contraction rate decreases b/c the amt of water entering the cell by osmosis increases.
400
the correct arrangement for the formation of a dipeptide bond. 
(a) because the carboxyl end of the dipeptide is positioned adjacent to the amine group of the next momoner
500
segment 1 will become denatured at lower temperatures because
what is seg 1 has more A-T base pairs which are held together by 2 H-bonds rather than 3 H-bonds
500
The nucleus of a eukaryotic cell functions to compartmentalize the processes of
alternative splicing and protein synthesis
500
If 30% of the nucleotides in a RNA molecule are adenine, then what % are expected to be thymine? Explain why (a) 20%; (b) 0%; (c) 70%; (d) 30%
(b) 0% b/c RNA doesn't have thymine
500
Based on the information in these graphs how could the experimenters DECREASE transpiration at 8 am
cause the stomata to close OR increase the humidity of the environment OR increase the water potential of the atmosphere OR place the plant in total darkness
500
oxidative phosphorylation and photosynthesis both require a membrane to couple...
the transport of H+ to the synthesis of ATP