Retester Tutoring: Day 3

Retester Tutoring: Day 3

Multiple Choice

Which of the following is homozygous dominant?

• Yy
• Y
• yy
• YY

Multiple Choice

G = green, g = yellow
The genotype for a yellow plant is...

• GG
• Gg
• gg
• all of the choices result in yellow

Multiple Choice

Tall is dominant to short. A homozygous tall plant is crossed with a short plant. What will be the phenotypes of the offspring?

• 100% tall
• 50% tall, 50% short
• 75% tall, 25% short
• 25% tall, 75% short

Multiple Choice

In sheep, the allele for belly fur (A) is dominant to the allele for no belly fur (a): Two sheep with no belly fur mate and produce offspring. What is the percent chance that the offspring will have belly fur?

• 0%

• 25%

• 50%

• 75%

• 100%

Multiple Choice

What gamete possibilities could come from this parent's genotype?

• AB, AB, aB, aB
• Ab, AB, Ab, ab
• Ab, Ab, Ab, Ab
• AB, aB, ab, aB

Multiple Choice

What goes in box 3

• Aabb

• AABB

• AAbb

• aaBb

Multiple Choice

A male beetle has the genotype Ttbb. If this beetle mates with a female with genotype TTBb, what is the chance their offspring will have the genotype TtBb?

• 3/16
• 4/16
• 8/16
• 12/16

Multiple Choice

9A An advertisement for a health supplement for dogs claims to build lean muscle and strengthen tendons and ligaments, as well as provide energy. Which two biomolecules must the supplement contain to provide these benefits?

• Carbohydrates and lipids

• Proteins and carbohydrates

• Nucleic acids and carbohydrates

• Lipids and nucleic acids

Multiple Choice

9A Students were given a list of seven elements and asked to identify the four elements that are most abundant in biomolecules. Which table correctly identifies the four most-abundant elements in biomolecules?

Multiple Choice

Based on the graph, what is the optimal temperature for this enzyme? 

• 15^oC
• 40^oC
• 30^oC
• 35^oC

Multiple Choice

9C Enzymes are proteins that have a three-dimensional shape that is specific to a particular substrate. Environmental conditions can change the shape of the protein.

What is the most likely result if the shape of the enzyme changes?

• The substrate will change its shape to match the enzyme.

• The enzyme will no longer be able to catalyze the reaction with the substrate.

• The products made from the enzyme and the substrate will be changed.

• The enzyme will be able to bind to more diverse substrates than before.

Multiple Choice

9C: The diagram represents one way an enzyme can be inhibited. Which statement explains the effect of an inhibitor on an enzyme?

• A substrate will be able to bond with the enzyme

• The enzyme will likely be attacked by immune cells

• The enzyme will be unable to produce more enzymes

• A substrate will be unable to attach to the enzyme