Review State Labs

What is the primary effect of exercise on pulse rate as demonstrated in the Clothespin Lab?

• Decreases pulse rate

• No effect on pulse rate

• Increases pulse rate

• Makes pulse rate irregular

In the Clothespin Lab, what might indicate that your finger muscles were warmed up during the exercise?

• If you squeezed more the second round

• If you squeezed less the second round

• If you used a different finger

• If you squeezed for a shorter time

What was the purpose of designing an experiment in Part B of the Clothespin Lab?

• To find the best type of clothespin

• To test how exercise affects squeezing a clothespin

• To compare different clothespins

• To measure the size of clothespins

What does gel electrophoresis demonstrate in the Botana curus lab?

• How plant species are unrelated

• How DNA fragments are unrelated to species traits

• How species are related based on DNA patterns

• How electric currents affect DNA stability

Which techniques are mentioned as useful for determining relationships between species?

• Microscopy and centrifugation

• Gel electrophoresis and paper chromatography

• DNA sequencing and PCR

• Crossbreeding and genetic modification

What was the purpose of using iodine in the diffusion experiment with the model cell?

• To test the permeability of the cell membrane to iodine

• To observe the color change in glucose

• To increase the size of the starch molecules

• To make the cell membrane more visible under a microscope

According to the experiment on diffusion through a membrane, which molecule could not diffuse through the membrane?

• Glucose

• Iodine

• Starch

• Salt

What was observed when Benedict’s solution was used in the diffusion experiment?

• The cell turned black indicating starch presence

• The solution indicated the presence of glucose inside the cell

• The iodine diffused out of the cell

• The starch molecules became smaller

What was the main observation when red onion cells were exposed to distilled water?

• The cells turned red

• The cells shrank

• The cells became plumper

• The cells divided

What does the diagram associated with the "Beaks of Finches" section primarily illustrate?

• Evolution of finch species

• Dietary preferences of finches

• Habitat distribution of finches

• Mating rituals of finches