AP Bio Feedback

Which of the following describes the orientation of the DNA found in a run gel electrophoresis?

• Small fragments are found near the well since it is negatively charged

• Large fragments are found near the well while small fragments are found at the other end.

• Small fragments are found near the well while small fragments are found at the other end.

• Large fragments are found near the well since it is positively charged

Identify two populations with statistically significant differences in the mean stem trichome densities. Justify.

• I & II, error bars overlap

• I & II, error bars do not overlap

• I & III, error bars do not overlap

• I & III, error bars overlap

Tags

NGSS.HS-LS4-3

A plasmid was cut using restriction enzymes. Determine the number of restriction sites for HaeIII. Justify.

• 3, there are 2 fragments resulting from a linear DNA strand being cut

• 3, there are 4 fragments resulting from a linear DNA strand being cut

• 2, there are 2 fragments resulting from a circular DNA strand being cut

• 4, there are 4 fragments resulting from a circular DNA strand being cut

A goat can produce milk containing the same polymers present in the silk produced by spiders when a particular genes from a spider are inserted into the goat's genome. Which of the following reasons describes why this is possible?

• Goats and spiders share a common ancestor and thus produce similar protein excretions.

• Goats retain all the genes that were found in ancestral species and will express these proteins when activated by a gene insertion

• The proteins in goats' milk and spiders' silk have the same amino acid sequence.

• The universal nature of the genetic code allows for production of identical proteins from different organisms as long as the DNA sequence is identical.

Tags

NGSS.HS-LS1-6

How does an enzymes shape relate to its function?

• the shape of the enzyme has no relation to its function

• the enzyme is shaped specially for certain substrates to perform a specific reaction

• the enzyme shape acts as a receptor to certain products

• the enzyme shape can fit into specific substrates to cease a reaction

What's going on in this picture?

• The enzyme is taking the red substrate and turning it blue

• The enzyme's active site is blocked by a competitive inhibitor

• The enzyme can't function if too many substrates are trying to bind

• This is an example of an anabolic enzyme reaction

Enzymes need certain environmental conditions in order to function properly.  What happens when enzymes are heated to a high temperature?

• they die

• they denature

• they change their amino acid sequence

• they work better

A receptor site that a molecule can bind to that changes the shape of the active site is called a(n):

• Allosteric Site

• Active Site

• Activation site

• Reactant site

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.

Enzymes are an example of

• Lipids

• Carbohydrate

• Protein

• Nucleic Acid

Tags

NGSS.HS-LS1-1

NGSS.HS-LS1-6