Biology Chapter 7 Test

Which type(s) of microscopes can produce three-dimensional images of cells?

scanning electron microscopes

Which of the following is NOT found in the nucleus? A. cytoplasm B. nucleolus C. Chromatin D. DNA

A. cytoplasm

Which of the following is a function of the cytoskeleton? A. helps a cell keep its shape B. contains DNA C. surrounds the cell D. helps make proteins

A. helps a cell keep its shape

An animal cell that is surrounded by fresh water will burst because the osmotic environment: A. hypotonic and water moves into the cell B. hypertonic and water moves out of the cell C. hypotonic and water moves out of the cell D. hypertonic and water moves into the cell

A. hypotonic and water moves into the cell

The taking in of bulk dissolved materials is: A. pinocytosis B. phagocytosis C. cellulosis D. exocytosis

A. pinocytosis

The main function of the cell wall is to: A. support and protect the cell B. store DNA C. direct the activities of the cell D. help the cell move

A. supports and protect the cell

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

B. an area of high concentration to an area of low concentration

You will NOT find a cell wall in which of these kinds of organisms? A. plants B. animals C. fungi D. all of the above

B. animals

Which of the following structures serves as the cell's boundary from its environment? A. cell wall B. cell membrane C. cytosol D. channel proteins

B. cell membrane

Condensed DNA in the nucleus is: A. centriole B. chromosome C. ribosomes D. protein

B. chromosome

The _______ is where the protein sorted and packaged: A. lysosome B. golgi apparatus C. centriole D. chromosome

B. golgi apparatus

Which type of environment has high solutes and low water? A. hypotonic B. hypertonic C. isotonic D. osmotic

B. hypertonic

Which organelle breaks down food and other particles in the animal cell? A. Golgi Apparatus B. lysosome C. endoplasmic reticulum D. mitochondrion

B. lysosome

The diffusion of water across a selectively permeable membrane is called: A. osmotic pressure B. osmosis C. facilitated diffusion D. active transport

B. osmosis

Which of the following structure is found in the cytoplasm? A. nucleolus B. ribosomes C. chromatin D. cell wall

B. ribosomes

Which of the following organisms are prokaryotes? A. plants B. animals C. bacteria D. all of the above

C. bacteria

Which organelle helps organize cellular division in animals cells? A. mitochondria B. lysosome C. centrioles D. nucleolus

C. centrioles

Which organelle would you expect to find in plant cells but not animal cells? A. mitochondrion B. ribosomes C. chloroplast D. smooth endoplasmic reticulum

C. chloroplast

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

C. move across the membrane in both directions

A small "organ" in a cell that has a specific function is a(n): A. cell B. ribosomes C. organelle D. chromosome

C. organelle

Eukaryotes usually contain A. a nucleus B. specialized organelles C. genetic material D. All of the above

D. all of the above

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

D. all of the above

Which of the following is composed of a lipid bilayer? A. cell wall B. cell membrane C. cytosol D. cytoskeleton

D. cell membrane

Which type of transport uses protein channels? A. pinocytosis B. diffusion C. osmosis D. facilitated diffusion

D. facilitated diffusion

Which organelle converts the chemical energy stored in food into compounds that are more convenient for the cell to use? A. chloroplast B. Golgi Apparatus C. endoplasmic reticulum D. mitochondrion

D. mitochondrion

A white blood cell attacking a bacterium and engulfing it is an example of: A. pinocytosis B. exocytosis C. cellulosis D. phagocytosis

D. phagocytosis

Which means of particle transport requires input of energy from the cell? A. diffusion B. osmosis C. facilitated diffusion D. pinocytosis

D. pinocytosis

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 B. lipids C. bilipids D. proteins

D. 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

D. regulates which materials enter and leave the cell

Which structure makes proteins using coded instructions that come from the nucleus? A. Golgi Apparatus B. mitochondrion C. vacuole D. ribosomes

D. ribosomes

A saclike organelle that stores water, salts, sugars, etc.: A. chloroplast B. lysosome C. mitochondria D. vacuole

D. vacuole

Prokaryotes lack

a nucleus