Question 1

Question

Kelvin got his wisdom teeth removed and his mouth is swollen. His doctor tells him to rinse his mouth with a warm saltwater solution every few hours. How does the saltwater solution help heal Kelvin's mouth?

a
The salt water is a hypotonic solution, and the swollen cells in Devin's mouth will release water through diffusion.
b
The salt water is a hypertonic solution, and the swollen cells in Devin's mouth will release water through osmosis.
c
The salt water is a hypotonic solution, and the swollen cells in Devin's mouth will take in water through osmosis.
d
The salt water is a hypertonic solution, and the swollen cells in Devin's mouth will take in water through diffusion.
Question 2
Which of these describes diffusion?

a
The active transport of particles into a cell
b
The net movement of any type of molecule from a region of lower concentration to a region of higher concentration
c
The active transport of particles out of a cell
d
The net movement of any type of molecule from a region of higher concentration to a region of lower concentration
Question 3
Crystals of dye, when placed in a beaker of water, eventually spread evenly throughout the water. This is an example of

a
phagocytosis.
b
active transport.
c
osmosis.
d
diffusion.
Question 4
Which of the following is NOT an example of homeostasis?

a
When body temperature rises, nerve impulses cause sweat glands to release more sweat.
b
As humans age, they become more susceptible to disease and cancer.
c
During rigorous exercise the heart rate increases to deliver more blood to the cells.
d
When blood glucose is high, the hormone insulin reduces blood glucose.
Question 5
Chlamydia is a sexually transmitted disease that is caused by a bacterium called Chlamydia trachomatis.

Which of these are characteristics of the infectious agent that causes chlamydia?

a
Unicellular organism that replicates only inside of other organisms
b
Nonliving particle that replicates only inside of other organisms
c
Non-living particle that contains DNA
d
Unicellular organism that contains DNA
Question 6
You're looking at a sample from your patient under the microscope. Does your patient have a virus? - ProProfs

You're looking at a sample from your patient under the microscope. Does your patient have a virus?

a
No, my patient does not have a virus, this is a fungal cell.
b
Yes, my patient has a virus, as this a typical viral structure.
c
Yes, my patient has a virus, since this is not a cell.
d
No, my patient does not have a virus, this is a bacterial cell.
Question 7
The diagram below represents a cell in the human body. Which statement concerning the structures within this cell is accurate?



a
Structure 1 is a chloroplast that carries out photosynthesis.
b
Structure 2 is a vacuole that contains DNA.
c
Structure 3 is a mitochondrion, where cellular respiration takes place.
d
Structure 4 is the cell membrane, which provides rigid, inflexible support for the cell.
Question 8
Which statement best describes the plasma membrane of a living plant cell?
The plasma membrane of a plant cell is

a
composed of two layers of proteins with floating molecules of lipids only.
b
designed to allow certain substances to enter and certain substances to exit the cell.
c
composed of two layers of proteins and carbohydrates only.
d
designed to allow for the free flow of all protein substances to move into and out of the cell.
Question 9
Which three organelles work together to prevent a plant cell from bursting when it has absorbed too much water?

a
cytoplasm, cell wall, and endoplasmic reticulum
b
vacuole, cell wall, and cell membrane
c
ribosome, cell membrane, and Golgi apparatus
d
lysosome, cell membrane, and chloroplast
Question 10
How is a mitochondrion's structure related to its function?

a
The complex folding pattern of the mitochondrion's membrane provides many sites where reactions can occur.
b
Mitochondria have no internal membranes.
c
The complex folding pattern of the mitochondrion's membrane does not provide many sites where reactions can occur.
d
The mitochondrion's internal membrane is not folded, which allows more sites for reactions.

Answer 1

Here are the answers to your questions:

Question 1:
b The salt water is a hypertonic solution, and the swollen cells in Devin's mouth will release water through osmosis.

Question 2:
d The net movement of any type of molecule from a region of higher concentration to a region of lower concentration.

Question 3:
d diffusion.

Question 4:
b As humans age, they become more susceptible to disease and cancer.

Question 5:
a Unicellular organism that replicates only inside of other organisms.

Question 6:
c Yes, my patient has a virus, since this is not a cell.

Question 7:
c Structure 3 is a mitochondrion, where cellular respiration takes place.

Question 8:
b designed to allow certain substances to enter and certain substances to exit the cell.

Question 9:
b vacuole, cell wall, and cell membrane.

Question 10:
a The complex folding pattern of the mitochondrion's membrane provides many sites where reactions can occur.

Feel free to ask if you need further assistance!