Download CH 7 CELL TEST

CH 7 CELL TEST
Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
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1. Who was one of the first people to identify and see cork cells?
a. Anton van Leeuwenhoek
c. Matthias Schleiden
b. Robert Hooke
d. Rudolf Virchow
2. Which of the following is NOT a principle of the cell theory?
a. Cells are the basic units of life.
b. All living things are made of cells.
c. Very few cells reproduce.
d. All cells are produced by existing cells.
3. Electron microscopes can reveal details
a. 100 times larger than those visible in light microscopes.
b. the same size as those visible in light microscopes.
c. 100 times smaller than those visible in light microscopes.
d. 1000 times smaller than those visible in light microscopes.
4. Prokaryotes lack
a. cytoplasm.
c. a nucleus.
b. a cell membrane.
d. genetic material.
5. Which of the following organisms are prokaryotes?
a. plants
c. bacteria
b. animals
d. all of the above
6. Which of the following is a function of the nucleus?
a. stores DNA
b. controls most of the cell’s processes
c. contains the information needed to make proteins
d. all of the above
7. Which of the following is NOT found in the nucleus?
a. cytoplasm
c. chromatin
b. nucleolus
d. DNA
8. Which of the following structures is found in the cytoplasm?
a. nucleolus
c. chromatin
b. ribosome
d. cell wall
9. Which organelle breaks down food into molecules the cell can use?
a. Golgi apparatus
c. endoplasmic reticulum
b. lysosome
d. mitochondrion
10. Which structure makes proteins using coded instructions that come from the nucleus?
a. Golgi apparatus
c. vacuole
b. mitochondrion
d. ribosome
11. Which organelles help provide cells with energy?
a. mitochondria and chloroplasts
c. smooth endoplasmic reticulum
b. rough endoplasmic reticulum
d. Golgi apparatus and ribosomes
12. Which sequence correctly traces the path of a protein in the cell?
a. rough endoplasmic reticulum, Golgi apparatus, released from the cell
b. ribosome, smooth endoplasmic reticulum, chloroplast
c. smooth endoplasmic reticulum, lysosome, Golgi apparatus
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d. mitochondria, rough endoplasmic reticulum, cell membrane
Which organelle would you expect to find in plant cells but not animal cells?
a. mitochondrion
c. chloroplast
b. ribosome
d. smooth endoplasmic reticulum
Which of the following is a function of the cytoskeleton?
a. helps a cell keep its shape
c. surrounds the cell
b. contains DNA
d. helps make proteins
Which structures carry out cell movement?
a. cytoplasm and ribosomes
c. microtubules and microfilaments
b. nucleolus and nucleus
d. chromosomes
The main function of the cell wall is to
a. support and protect the cell.
c. direct the activities of the cell.
b. store DNA.
d. help the cell move.
Unlike the cell membrane, the cell wall is
a. found in all organisms.
c. a flexible barrier.
b. composed of a lipid bilayer.
d. usually made of tough fibers.
You will NOT find a cell wall in which of these kinds of organisms?
a. plants
c. fungi
b. animals
d. all of the above
Which of the following structures serves as the cell’s boundary from its environment?
a. mitochondrion
c. chloroplast
b. cell membrane
d. channel proteins
Which of the following is a function of the cell membrane?
a. breaks down lipids, carbohydrates, and proteins from foods
b. stores water, salt, proteins, and carbohydrates
c. keeps the cell wall in place
d. regulates which materials enter and leave the cell
The cell membrane contains channels and pumps that help move materials from one side to the other. What
are these channels and pumps made of?
a. carbohydrates
c. bilipids
b. lipids
d. proteins
Diffusion is the movement of molecules from
a. an area of low concentration to an area of high concentration.
b. an area of high concentration to an area of low concentration.
c. an area of equilibrium to an area of high concentration.
d. all of the above
Diffusion occurs because
a. molecules constantly move and collide with each other.
b. the concentration of a solution is never the same throughout a solution.
c. the concentration of a solution is always the same throughout a solution.
d. molecules never move or collide with each other.
When the concentration of molecules on both sides of a membrane is the same, the molecules will
a. move across the membrane to the outside of the cell.
b. stop moving across the membrane.
c. move across the membrane in both directions.
d. move across the membrane to the inside of the cell.
Which means of particle transport requires input of energy from the cell?
a. diffusion
c. facilitated diffusion
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b. osmosis
d. active transport
The diffusion of water across a selectively permeable membrane is called
a. osmotic pressure.
c. facilitated diffusion.
b. osmosis.
d. active transport.
An animal cell that is surrounded by fresh water will burst because the osmotic pressure causes
a. water to move into the cell.
c. solutes to move into the cell.
b. water to move out of the cell.
d. solutes to move out of the cell.
Which term refers to cells having different jobs in an organism?
a. multicellular
c. levels of organization
b. cell specialization
d. unicellular
All of the following are examples of cell specialization EXCEPT
a. a pancreatic cell that produces protein-digesting enzymes.
b. muscle cells that control movement of materials in the body
c. a prokaryotic cell that carries out photosynthesis.
d. a red blood cell that carries oxygen.
A group of similar cells that perform a particular function is called a(an)
a. organ.
c. tissue.
b. organ system.
d. division of labor.
An organ system is a group of organs that
a. are made up of similar cells.
b. are made up of similar tissues.
c. work together to perform a specific function.
d. work together to perform all the functions in a multicellular organism.
The ressure a plant exerts against it cell wall from the inside when it is adequetly supplied with water is
called?
a. turgor
c. pressure gradient
b. diffusion
d. facilitated diffusion
Which of these processes in an animal are affected by diffusion?
a. cellular respiration
c. kidney filtration of the blood
b. absorbing food into the blood stream
d. all of these
Short Answer
34. Use the data below to answer the questions.
You place a cell into a beaker of water. The cell membrane is permeable only to oxygen, water and salt.
CELL
BEAKER
95% water
90% water
2% salt
0% salt
1% misc.
1% misc.
2% glucose
4% glucose
0% oxygen
5% oxygen
34. What type of membrane does the cell have?
35. The membrane is ___________ to glucose.
36. Water will move through the membrane by a process called _____________.
37-40. What direction will these molecules move? a. mostly into the cell,
b. mostly out of the cell, c. both directions equally d. no movement in or out of cell.
37. water ____
38. salt ____
39. oxygen ____
40. glucose ____