Final Exam Review #3

1.

1 point

If a small amount of salt (1 tsp) is added to a large container of water (1 gallon) and allowed to set for several days without stirring, the salt molecules will:

...The reason for my answer is because:

be evenly distributed throughout the container.

be more concentrated on the bottom of the water.

there will be more time for settling.

salt is heavier than water and will sink.

salt dissolves poorly or not at all in water.

there is movement of particles from high to low concentration.

2.

1 point

Which of the following describes a mechanism by which a plasmid containing an allele for resistance to penicillin could be transfered from one bacteria cell to another? Select all that apply. You must select all correct answers and no incorrect answers to earn credit.

Two bacteria cells join with a conjugation tube on the surface of a human hand.

A person ingests undercooked meat that has both E.coli and Salmonella.

A bacteria cell in a human gut absorbs free DNA from other bacteria cells that were killed when the human took penicillin.

A bacteriophage infects a bacteria cell in a human throat.

3.

1 point

Questions 8 - 11 are about the paper by Ferreira et al. 2006.

Looking at Figure 1, at what amount of time after consuming alcohol were participants' breath alcohol concentrations highest?

5 - 10 minutes

15 - 20 minutes

30 - 60 minutes

90 - 120 minutes

4.

1 point

All cell membranes are:

...I chose this answer because:

permeable

semipermeable

allow some substances to pass through, but not others.

allow free movement of materials into or out of the cell.

allow some substances to enter the cell, while they prevent all substances from leaving.

allow only beneficial materials to enter the cell.

5.

1 point

How many chromosomes are in the nucleus of a human skin cell?

2

4

23

46

92

6.

1 point

Suppose you add a drop of blue dye to a container of clear water and after several hours the fluid is evently colored light blue. At this time, the molecules of dye:

...The reason for my answer is because:

continue to move around randomly.

have stopped moving.

there is a liquid system. If it were a solid, the molecules would stop moving.

if the dye molecules stopped, they would settle to the bottom of the container.

molecules move until they are evenly distributed, and then they stop.

when molecules are evenly distributed, they still continue to move.

7.

1 point

Based on this study, we can conclude that energy drinks with alcohol have the same effects on a person as consuming alcohol alone.

True

False

8.

1 point

At which of the following times were most of the "tests" run on participants? By "tests" I mean the evaulation of alcohol intoxication and visual reaction time. Select all that apply.

120 minutes after consuming the "treatment"

60 minutes after consuming the "treatment"

15 minutes after consuming the "treatment"

150 minutes after consuming the "treatment"

90 minutes after consuming the "treatment"

30 minutes after consuming the "treatment"

Before consuming the "treatment"

9.

1 point

What is adaptive radiation?

The emergence, from a common ancestor, of numerous species to fill underused niches.

Adaptation that occurs in a population following exposure to radiation, like UV radiation from the sun.

The abiotic (non-living) and biotic (living) resources used by member of a species.

The spread, from a common ancestor, of traits throughout a population in a new habitat.

10.

1 point

During the process of diffusion, particles will generally move from:

...The reason for my answer is because:

high to low concentration

low to high concentration

crowded particles want to move to an area with more room

the random motion of particles suspended in a fluid results in their uniform distribution

the particles tend to keep moving until they are uniformly distributed and then they stop moving.

there is a greater chance of the particles repelling each other.

11.

1 point

Which of the following statements about the corpus luteum are true? Select all that apply.

The corpus luteum is sustained by estradiol and progesterone.

The corpus luteum is created from the remaining follicle after ovulation.

The corpus luteum sends estradiol and progesterone to the uterus through the fallopian tubes.

The corpus luteum includes endocrine cells.

The degeneration of the corpus luteum leads (indirectly) to the menstrual flow.

12.

1 point

Human females have two reproductive cycles that happen sequentially. The ovarian cycle occurs first and then the menstrual cycle occurs.

True

False

13.

1 point

Which of the following data did the researchers collect?

perspiration levels

perceptions of intoxication symptoms

blood alcohol levels

motor coordination

breath alcohol concentration

visual reaction time