AP Bio Labs Review

·  An eager AP Biology student interested in studying osmosis and the movement of water in solutions took a dialysis bag containing a 0.5 M solution and placed it into a beaker containing a 0.6 M solution. After the bag has been sitting in the beaker for a while, what would you expect to have happened to the bag?

• There will have been a net flow of water out of the bag, causing it to decrease in size.
• A.  There will be have been a net flow of water into the bag, causing it to swell in size.
• The bag will be the exact same size because no water will have move at all.
• A.  The solute will have moved out of the dialysis bag into the beaker.

The solutions in the two arms of this U-tube are separated by a membrane that is permeable to water and sodium chloride, but not to sucrose. Side A is filled with a solution of 0.6 M sucrose and 0.2 M sodium chloride (NaCl), and side B is filled with a solution of 0.2 M sucrose and 0.3 M NaCl. Initially, the volume on both sides is the same. 

• Side A is hypotonic to side B
• Side A is hypertonic to side B.
• Side A is isotonic to side B.
• Side A is hypotonic to side B with respect tos ucrose.

Tags

NGSS.HS-LS2-4

·  What is the rate of reaction for the enzyme-substrate interaction shown in the graph below?

• A.  6 µmol/min (micromoles per minute)
• A.  5 µmol/min
• A.  4 µmol/min
• A.  3 µmol/min

Tags

NGSS.HS-PS1-5

·  A student conducts an experiment to test the efficiency of a certain enzyme. Which of the following protocols would probably not result in a change in the enzyme’s efficiency? 

• Bringing the temperature of the experimental setup from 20^oC to 50^oC
• A.  Adding an acidic solution to the setup
• A.  Adding substrate but not enzyme
• A.  Placing the substrate and enzyme in a container with double the capacity

Tags

NGSS.HS-PS1-5

·  In an experiment involving Sordaria, an ascomycete fungus, it was found that of 450 offspring produced, 58 yielded a 2:2:2:2 ratio and 32 a 2:4:2 ratio. Approximately how far apart is the gene from the centromere?

• 10.0 map units
• 15.0 map units
• 20.0 mu
• 25.0 mu

Tags

NGSS.HS-LS3-3

·  Crossover would most likely occur in which situation?

• Two genes (1 and 2) are located right next to each other on chromosome A.
• A.  Gene 1 is located on chromosome A, and gene 2 is on chromosome B.
• A.  Genes 1 and 2 are located near each other on the X chromosome.
• A.  Gene 1 is located on chromosome A; gene 2 is located far away but on the same chromosome.

Tags

NGSS.HS-LS3-1

·  A laboratory procedure involving plants presents you with the data found in the following chart:

• Chlorophyll b
• Xanthophyll
• Chlorophyll a
• Beta carotene

Which of the following statements is correct?

• water flows from hypertonic to hypotonic
• germinating seeds use less oxygen than do nongerminating seeds
• The rate of transpiration decreases with an increase in air movement.
• Smaller DNA fragments migrate more rapidly than do larger DNA fragments on gel electrophoresis.

·  Which of the following would indicate you successfully transformed your E. coli culture with the plasmid containing the gene for ampicillin resistance?

• A.  The ampicillin-containing agar plates would show growth from your control culture (E. coli without the plasmid), but not your transformed culture.
• A.  The ampicillin-containing agar plates would show growth from your transformed culture, but not the control.
• A.  The transformed culture would not grow on the agar-only plates.
• A.  Both the transformed E. coli and the untransformed E. coli would grow on the plain agar plates.

·  In a certain species of plant, the allele to produce green melons (G) is dominant over the allele to produce yellow melons (g). A student performed a cross between a plant that produced green melons. When the student observed the next generation, the 94 seeds that were produced from the cross matured to into 53 plants with green melons and 41 plants with yellow melons. Calculate the chi-squared value for the null hypothesis that the green-melon parent was heterozygous for the melon-color gene.

• 0.776
• 1.53
• 4.26
• 3.84

Tags

NGSS.HS-LS3-2

NGSS.HS-LS3-3