Chapter 4 Inside the Cell

Without a centrosome, cells would not be able to ________. A. move organelles around the cytoplasm B. manufacture actin filaments C. manufacture proteins D. produce ATP

A. move organelles around the cytoplasm

Plant cells can communicate with each other via ________. A. plasmodesmata B. fimbriae C. centrioles D. cytoskeleton

A. plasmodesmata

Some proteins within a cell can be viewed with ________. A. the naked eye B. an electron microscope C. a light microscope D. None of the choices are correct.

B. an electron microscope

A prokaryotic cell ________. A. has no DNA B. does not have a membrane-bound nucleus C. does not have ribosomes D. does not have cytoplasm

B. does not have a membrane-bound nucleus

Metabolic reactions are compartmentalized in a cell by the ________. A. cytoskeleton B. endomembrane system C. capsule D. channel proteins

B. endomembrane system

Disease-causing bacteria often attach to cells they attack. The bacterial structures used to aid that attachment are ________. A. flagella B. fimbriae C. sex pili D. cilia

B. fimbriae

Without tight junctions in certain tissues ________. A. cells would not be able to communicate with each other B. fluids may leak out past the barrier the junction would create C. the tissues would not be able to expand and stretch without damage D. nutrients would not be able to be passed from cell to cell

B. fluids may leak out past the barrier the junction would create

Cell walls function in ________. A. moving organelles throughout the cell B. maintaining cell shape C. producing the cytoskeleton D. containing DNA

B. maintaining cell shape

Plants need mitochondria to ________. A. produce carbohydrate B. produce ATP C. produce lipids D. both produce ATP and lipids

B. produce ATP

Because eukaryotic cells are so large, movement of organelles via the ___ are critical. A. cytoskeleton B. endomembrane system C. Golgi bodies D. plasma membrane

A. cytoskeleton

Which of the following is the correct sequence for an altered protein that is secreted from the cell? A. rough endoplasmic reticulum - Golgi apparatus - plasma membrane B. Golgi apparatus - ribosome - plasma membrane C. nucleus - smooth endoplasmic reticulum - Golgi apparatus D. Golgi apparatus - smooth endoplasmic reticulum - plasma membrane

A. rough endoplasmic reticulum - Golgi apparatus - plasma membrane

9. Without receptor proteins, a cell would not be able to ________. A. transport water into the cytoplasm B. receive signals from other parts of the body C. allow the passage of H+ ions into the cell D. perform metabolic reactions

B. receive signals from other parts of the body

Where do the vesicles originate that are involved in secretion? A. lysosomes B. nucleus C. Golgi apparatus D. ribosomes

C. Golgi apparatus

A stack of thylakoids is called a ________. A. chloroplast B. thylakoid space C. granum D. cristae

C. granum

Which of the following is an incorrect match? A. ribosomes - protein formation B. Golgi apparatus - protein alteration C. mitochondria - protein recycling D. lysosomes - protein digestion

C. mitochondria - protein recycling

Fig. 4.1 is a diagram of a bacterium. What structure does Y represent? (see picture on document. I can't get the pictures to copy and paste!) A. capsule B. flagella C. nucleoid D. wall

C. nucleoid

. ___ are bacterial structures involved in the passage of DNA into or out of the cell. A. flagella B. fimbriae C. sex pili D. cilia

C. sex pili

Actin filaments participate in ________. A. muscle cell contraction B. animal cell division C. supporting microvilli D. All of the choices are correct.

D. All of the choices are correct.

Chloroplasts and mitochondria are similar in that they both ________. A. contain DNA B. have a second, interior membrane C. are involved in energy conversion D. All of the choices are correct.

D. All of the choices are correct.

Which of the following is an incorrect match of molecule to location? A. DNA - nucleus B. mRNA - nucleus C. rRNA - cytoplasm D. All of the choices are correct.

D. All of the choices are correct.

Which of the following is not a possible function of the extracellular matrix in animals? A. direct migration of cells as the animal develops B. support within the animal C. facilitate movement of nutrients from blood to cytoplasm D. assist in movement of organelles

D. assist in movement of organelles

A bacteria's cytoplasm contains ________. A. a cytoskeleton B. DNA C. enzymes D. both DNA and enzymes

D. both DNA and enzymes

Vacuoles differ from vesicles in that vacuoles ________. A. do not have membranes B. are larger C. can be specialized D. both larger and can be specialized

D. both larger and can be specialized

Chromosomes are ________. A. condensed nucleoli B. expanded ribosomes C. expanded polysaccharides D. condensed chromatin

D. condensed chromatin

Cell size is limited because ___ is critical to a cell's function. A. the number of microvilli B. the size of the nucleus C. apoptosis D. surface area to volume ratio

D. surface area to volume ratio

Plant cells have walls but do not have plasma membranes. True False

False

The nuclear membrane differs from the plasma membrane in that the nuclear membrane is a single layer of phospholipids. True False

False

A cell responds to the binding of a molecule with a receptor protein when the protein changes shape. True False

True

Polysaccharides can be found in the capsule of bacteria as well as the extracellular matrix of animals. True False

True

The plasma membrane's hydrophilic part faces the outside of the cell and the cytoplasm. True False

True