Exam 1 Clicker Questions

Question 1

A friend of yours finds you after class and says that his new iPhone5 would not turn on this morning. He asks you for your help. You should tell him the battery must be dead, and if so, charging the phone should solve the problem. In doing so, you are:

Answer 1

offering a specific hypothesis and associated prediction to explain why the iPhone won’t turn on

Question 2

Suppose you clone a single mouse and create a population of 100 animals that are genetically identical. You raise these animals in separate cages in an environmentally controlled room. You then decide to subject your population to artificial selection. What is the fatal flaw in your experiment?

Answer 2

there is no material for artificial selection because there is no variation in traits in the population

Question 3

Which component of the evolution of antibiotic-resistant TB is NONRANDOM?

Answer 3

selection for drug-resistant TB

Question 4

Why would inhibition of RNA polymerase be “bad” for bacteria?

Answer 4

cells can’t survive if they can’t make protein

Question 5

The C to T mutation in the RNA polymerase gene was the only mutation in this population of bacteria.

Answer 5

false

Question 6

An atom has four electrons in its valence shell. Which of the following types of covalent bonds is it capable of forming?

Answer 6

single, double, or triple

Question 7

When two atoms share electrons, they are held together by what sort of bond?

Answer 7

covalent

Question 8

At what temperature is water the LEAST dense?

Answer 8

the colder temperature

Question 9

Why is the meniscus that forms on the surface of a glass of water CONCAVE?

Answer 9

water molecules possess counteracting cohesive and adhesive properties

Question 10

Which of the following characteristics apply to water?

Answer 10

the atoms of water interact by covalent bonds

Question 11

Carbon is an important element for biology because:

Answer 11

of the variety of carbon skeletons and functional groups that can be built on them

Question 12

How does substitution of an ELECTRONEGATIVE atom for a HYDROGEN atom in a small (>6 carbons) carbon-based molecule alter its chemical properties?

Answer 12

increase its reactivity

Question 13

On the surface of a cytoplasmic protein you are most likely to find:

Answer 13

• amino acids with polar side chains

- amino acids with charged side chains

Question 14

On the surface of a membrane protein which is in contact with the fatty acid tails you are most likely to find:

Answer 14

amino acids with non-polar side chains

Question 15

The sickle shape of red blood cells in sickle cell anemia is caused by

Answer 15

an alteration in the primary structure of the Beta globin protein

Question 16

Prions misfold because:

Answer 16

• the secondary structure of the protein has been altered

- the tertiary structure of the protein has been altered