Cells and Cell Transport Test

Cells and Cell Transport Test

1 pt. – Multiple Choice

Identify the letter of the choice that best completes the statement or answers the question.

1. Which of the following is a function of the nucleus?
2. Contains the information needed to make proteins
3. Stores DNA
4. Controls most of the cell’s processes
5. All of the above

1. Which structure makes proteins using coded instructions that come from the nucleus?
2. Ribosome
3. Vacuole
4. Mitochondrion
5. Golgi apparatus

1. Which organelle converts the chemical energy stored in food into ATP?
2. Chloroplast
3. Golgi apparatus
4. Mitochondrion
5. Endoplasmic reticulum

1. Which of the following is a function of the cell membrane?
2. Regulates which materials enter and leave the cell
3. Stores water, salt, proteins, and carbohydrates
4. Breaks down lipids, carbohydrates, and proteins from foods
5. Keeps the cell wall in place

1. Which organelle would you expect to find in plants cells but not animal cells?
2. Chloroplast
3. Ribosome
4. Smooth endoplasmic reticulum
5. Mitochondrion

1. A cell will swell when it is placed in a(n)
2. Hypertonic solution
3. Hypotonic solution
4. Isotonic solution
5. None of the above

1. Unlike passive transport, active transport
2. Requires energy
3. Does not involve carrier proteins
4. Moves substances down their concentration gradient
5. All of the above

1. Ridding the cell of materials by discharging the materials in vesicles at the cell surface is called
2. diffusion
3. osmosis
4. endocytosis
5. exocytosis

1. Small proteins and sugars that are too large to move into a cell through diffusion can diffuse through the cell membrane using protein channels. What type of diffusion is this?
2. Endocytosis
3. Osmosis
4. Exocytosis
5. Facilitated diffusion

1. Diffusion is the movement of a substance
2. only in liquids.
3. from and area of high concentration to an area of lower concentration.
4. only through a lipid membrane.
5. from an area of low concentration to an area of higher concentration.

1. The diffusion of water into or out of a cell is called
2. solubility.
3. endocytosis.
4. selective transport.
5. osmosis.

1. Which of the following is a form of active transport?
2. Osmosis
3. Diffusion
4. Facilitated diffusion
5. Exocytosis

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2 pt. – Multiple Choice

Identify the letter of the choice that best completes the statement or answers the question.

1. The process shown in the figure below is called

1. active transport
2. diffusion
3. facilitated diffusion
4. osmosis

1. The interior of a cell membrane forms a nonpolar zone that
2. makes the membrane permeable to most molecules.
3. repels ions and most polar molecules.
4. allows most polar molecules to pass through the membrane.
5. allows food to pass through the membrane.
6. Which condition(s) might cause a cell to burst?

1. Conditions A and C
2. Condition C
3. Conditions A and D
4. Conditions B

1. What cell process is responsible for the effect shown in the diagram below?

1. facilitated diffusion
2. osmosis
3. simple diffusion
4. protein pump

1. What type of solution is this cell in?

1. isotonic
2. osmostic
3. hypertonic
4. hypotonic

1. A cell begins to swell when it is placed in an unknown solution. What can you conclude about the solution?
2. There is an equal concentration of solutes in the surrounding solution than in the cell.
3. There is a higher concentration of solutes in the surrounding solution than in the cell.
4. There is a lower concentration of solutes in the surrounding solution than in the cell.
5. The solution is saturated.

1. What process is occurring in the following diagram and what type of transport is it?

1. endocytosis, passive
2. endocytosis, active
3. facilitated diffusion, active
4. exocytosis, passive

1. A particular toxin prevents cellular production of usable energy. Cells that are affected by this toxin are unable to carry out many of their normal functions. Which of these organelles would be most directly harmed by this toxin? A diagram of this organelle is shown below.

1. mitochondria
2. vacuole
3. nucleus
4. ribosome

1. A student observes a unicellular organism under a microscope. Below is a diagram of the organism that she observed. What structure does this organism used to move?

1. flagella
2. cilia
3. cell membrane
4. pseudopodia

1. The letters in the diagram below indicate some parts of a cell. The function of which cell part is most similar to that of the human excretory system?
2. A
3. B
4. C
5. D

Use the image below to answer question 23. In the image below, assume that the membrane is impermeable to starch.

1. Which row in the chart below best explains the movement of some molecules between the model cell and the solution in the beaker?

1. 1
2. 2
3. 3
4. 4

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2 pt. – Science Literacy Multiple Choice

Identify the letter of the choice that best completes the statement or answers the question. Circle the letter of the best answer on the answer sheet provided.

1. Daphnia (water fleas) are sensitive to many changes in pond ecosystems. For this reason they are often used in bioassays, tests in which organisms are exposed to various levels of a chemical to determine what levels are safe. The results of these tests determine whether or not the chemical being tested will affect other pond organism.

An experiment was designed to determine the toxicity of different salt solutions on cultures of daphnia. Five fish tanks were each filled with the same amount of water containing different concentrations of salt. Ten daphnia were placed in each tank. After 48 hours the number of daphnia that survived were counted. The results of the lab showed that as the concentration of salt increased from 0.63 g/L to 2.5 g/L the number of daphnia that died decreased. As the concentration of salt increased from 2.5 g/L to 10.0 g/L the number of daphnia that died increased.

When the daphnia were in the 10 g/L tank, what type of solution were they placed in and why did they die?

1. Hypertonic, there was more water outside their cells than in, so water entered the cells
2. Hypotonic, there was more water outside their cells than in, so water entered the cells
3. Hypertonic, there was more water inside their cells than out, so water left the cells
4. Hypotonic, there was more water inside their cells than out, so water left the cells

1. In every cell, thousands of important processes are occurring around the clock. One of the ways a cell manages to coordinate all of these processes is by sending protein messages. After the protein messages are delivered and read, they need to be destroyed to prepare for the arrival of the next message.

The task of destroying these proteins falls on cell structures known as proteasomes. Think of a proteasome as a tube-like shredder. Protein molecules that have served their purpose are transported to the proteasome, unfolded, fed through the tube, and cut into smaller molecules that can then be used to synthesize new protein molecules. Proteasomes can shred any type of protein.

What type of organelle is a proteasome most similar to?

1. A ribosome
2. A endoplasmic reticulum
3. A lysosome
4. A mitochondria

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4 pts. – BCRs

Answer the BCR prompt on your answer sheet using complete sentences.

26. In an experiment, a group of students determined the mass of 3 groups of 10 raisins and placed them into labeled beakers. She then added a different solution to each beaker. They covered the beakers and let the raisins sit for 24 hours. The students removed the raisins from the beakers, dried them with a paper towel, and determined their mass. Results of this experiment are shown in the table below. Explain what happened to the raisins.

Be sure to include the following in your response:

•Name and describe the process that caused the raisins to have a change in mass

•Describe and explain why each slice had a different mass after 24 hours