Chapter 4

Which of the following would be able to pass freely through a plasma membrane? Multiple Choice H2O C6H12O6 CO2 NaOH C10H13N5O4

CO2

Which of the following statements describes the function of a chloroplast? Multiple Choice It converts light energy into chemical energy. It aids in intracellular digestion. It manufactures proteins. It converts chemical energy into heat energy. It stores water.

It converts light energy into chemical energy.

As a molecule moves through the plasma membrane it passes through, Multiple Choice a hydrophobic layer of phospholipid heads, then a hydrophilic layer of phospholipid tails, and then another hydrophobic layer of phospholipid heads. a hydrophobic layer of phospholipid tails, then a hydrophilic layer of phospholipid heads, and then another hydrophobic layer of phospholipid tails. a hydrophilic layer of phospholipid heads, then a hydrophobic layer of phospholipid tails. a hydrophilic layer of phospholipid heads, then a hydrophobic layer of phospholipid tails, and then another hydrophilic layer of phospholipid heads. a hydrophobic layer of phospholipid tails, and then a hydrophilic layer of phospholipid heads.

a hydrophilic layer of phospholipid heads then a hydrophobic layer of phospholipid tails and then another hydrophilic layer of phospholipid heads.

Resolving power is the Multiple Choice ability to tell two points apart as separate points. ability to make an object larger. focusing mechanism used to bring objects clearly into view. optimum power used to most clearly view the entire specimen. depth of the specimen clearly in focus.

ability to tell two points apart as separate points

Which of the following is not a function of the endomembrane system? Multiple Choice prepares molecules for export from the cell provides a place for produced cellular materials to be refined manufactures molecules acts as the control center of the cell assists in moving materials from one part of the cell to another

acts as the control center of the cell

Which is the most common type of intercellular junction between cells of the bladder? Multiple Choice gap junctions tight junctions plasmodesmata adhesion junctions None of these are found between cells of the bladder.

adhesion junctions

Some proteins within a cell can be viewed with Multiple Choice the human eye. a light microscope. a magnifying glass. a dissecting microscope. electron microscope

an electron microscope.

Mitochondria and chloroplasts are similar in that they both ________, but are different in that mitochondria, but not chloroplasts, ________. Multiple Choice are involved in energy conversions; are found in nearly all eukaryotic cells are found in bacteria; are used to capture radiant energy and convert it into chemical energy are organelles involved in the production of proteins; are found in animal cells produce glucose needed for cellular processes; are found in plant cells are responsible for cell movements; help to produce the microtubules seen in cilia

are involved in energy conversions; are found in nearly all eukaryotic cells

A cell being observed under a microscope has a cell wall, plasma membrane, ribosomes, and chromosomal material that is not found in a nucleus. Based on this information, the cell could be a Multiple Choice cell from a cactus. cell from a mushroom. bacterial cell. cell from a fish. cell from a paramecium.

bacterial cell.

The main structural component of a plant cell wall is Multiple Choice cytoskeleton. cellulose. extracellular matrix. plasmodesmata. middle lamella.

cellulose

Which of the following is not a type of intracellular protein? Multiple Choice actin filaments myosin cellulose microtubules kinesin

cellulose

What function does the nucleolus have? Multiple Choice houses the chromatin prepares products for export from the cell contains enzymes for intracellular digestion contains the majority of cellular DNA codes for the synthesis of ribosomal RNA

codes for the synthesis of ribosomal RNA

All cells have some characteristics in common; both prokaryotic and eukaryotic cells have Multiple Choice cytoplasm, a plasma membrane, and DNA. a cell membrane and cytoplasm. a nucleus and a cell membrane. cytoplasm, a plasma membrane, and a nucleus. DNA and a cell membrane.

cytoplasm, a plasma membrane, and DNA.

A prokaryotic cell Multiple Choice has no DNA. does not have a membrane-bound nucleus. does not have ribosomes. does not have cytoplasm. is typically larger than a eukaryotic cell.

does not have a membrane-bound nucleus.

Without tight junctions in certain tissues, Multiple Choice cells would not be able to communicate with each other. the tissues would not be able to expand and stretch without damage. nutrients would not be able to be passed from cell to cell. fluids may leak out past the barrier the junction would create. cells would not be able to migrate during their development.

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

Which of the following is an incorrect match of molecule to the location where it is principally used? Multiple Choice DNA - nucleus mRNA - nucleus and cytoplasm rRNA - cytoplasm glucose - lysosome proteins - ribosome

glucose - lysosome

What does the folding of the mitochondrial inner membrane, shown here, provide? reater ability to allow for osmosis increased surface area for photosynthesis greater ability to remove waste from the cell cytosol greater surface area for ATP production increased space for protein synthesis

greater surface area for ATP production

A tadpole that is undergoing metamorphosis into a frog and losing the need for a tail would see abundant numbers of which organelle to help assist in the tail loss? Multiple Choice smooth endoplasmic reticulum vacuoles centrioles microtubles lysosomes

lysosomes

In bacterial cells and plant cells, cell walls function in Multiple Choice moving organelles throughout the cell. maintaining cell shape. producing the cytoskeleton. containing DNA. modifying lipids and proteins.

maintaining shape

Which of the following organelles would be abundant in a sperm cell that is seeking to fertilize an egg cell? Multiple Choice mitochondria lysosomes smooth endoplasmic reticulum Golgi apparatus ribosomes

mitochondria

Which of the following is a correct matching of an organelle and its function? Multiple Choice mitochondrion - cellular respiration Golgi apparatus - protein synthesis lysosome - transport vacuole - control center endoplasmic reticulum - houses DNA

mitochondrion - cellular respiration

There is an antibiotic called streptomycin that doctors prescribe for infection. The antibiotic combines with the bacteria's ribosomes causing them to lose their function. Consequently, the cells die and the person gets better. In other words, the antibiotic destroys bacteria by Multiple Choice stopping photosynthesis. preventing them from packaging materials. stopping the production of ATP energy. not allowing them to produce proteins. stopping them from being able to move.

not allowing them to produce proteins.

Which of the following structures would not be found in a prokaryotic cell? Multiple Choice cell membrane nucleus ribosomes flagella chromosomes

nucleus

The nucleus has a double membrane that encloses the DNA. Inside the nucleus, the DNA acts as the template to produce mRNA and ribosomes. To exit the nucleus, these molecules must Multiple Choice diffuse through the double membrane into the cytoplasm. pass through carrier proteins which use ATP to transport the molecules. attach to carrier molecules that carry them through the membrane. pass through pores that span both membranes. be transported across the two membranes by means of vesicles.

pass through pores that span both membranes.

Since the plasma membrane blocks the passage of all but a few molecules with specific traits, it is necessary for other molecules to Multiple Choice pass through the membrane via pores made of carbohydrates. be broken down into their constituent atoms to move through the membrane. be converted into other types of molecules so that they meet the specific traits necessary. pass through the membrane via nucleic acids. pass through the membrane via proteins.

pass through the membrane via proteins

What must materials pass through to enter or leave a cell? Multiple Choice ribosome nucleus lysosome vacuole plasma membrane

plasma membrane

Identify the organelle - function pairing that is incorrect. Multiple Choice flagella - long, tail-like structure used in motility of some cells ribosomes - capable of producing proteins for the cell lysosomes - contain digestive enzymes that can digest molecules or cellular components plasma membrane - provides strength to plant cell walls

plasma membrane - provides strength to plant cell walls

Which feature is found in all cells? Multiple Choice plasma membrane composed of phospholipids nucleus containing DNA cell wall composed of cellulose flagella nucleoid region that contains DNA

plasma membrane composed of phospholipids

Both plants and animals need mitochondria to Multiple Choice produce glucose. produce ATP. produce lipids. break down proteins. manufacture phospholipids.

produce atp

Which of the following is not a possible function of the extracellular matrix in animal cells? Multiple Choice enables cells to migrate along intracellular fibers permits communication between the extracellular matrix and the cells creates a variety of consistencies for cells to live in, from flexible cartilage to solid bone helps cells have flexibility produces numerous channels for continuous flow of water from cell to cell

produces numerous channels for continuous flow of water from cell to cell

Eukaryotic cells have DNA enclosed in a double membrane called the nucleus. The nucleus functions to Multiple Choice prevent the DNA from influencing the activities in the cytoplasm. prevent materials associated with the DNA from coming into contact with the cell's cytoplasm. separate the DNA and mRNA from the cytoplasm. separate the DNA from the RNA. separate the DNA from other activities that occur in the cytoplasm.

separate the DNA from other activities that occur in the cytoplasm.

Which of the following is an incorrect match? Multiple Choice ribosomes - protein synthesis Golgi apparatus - protein alteration and packaging mitochondria - production of cellular ATP lysosomes - cellular digestion smooth endoplasmic reticulum - storage of water

smooth endoplasmic reticulum - storage of water

Eukaryotic cells move their organelles using Multiple Choice the cytoskeleton. the endomembrane system. cilia. the plasma membrane. flagella.

the cytoskeleton.

The glycoproteins found in the plasma membrane function in what capacity? Multiple Choice to transport molecules across the membrane to allow one cell to recognize another of the same type or from the same body to attach to the cytoskeleton on the interior of the cell and maintain the cell in a position relative to other cells to maintain the membrane's fluidity to catalyze reactions that are crucial to the cell's functioning

to allow one cell to recognize another of the same type or from the same body

Which of the following is not a function of junction proteins? Multiple Choice to stitch cells together so that they do not move apart to allow information to pass between adjacent cells to bind cells together into a functional organ to permit cells to recognize one another to allow cell-to-cell communication

to permit cells to recognize one another

Receptor proteins Multiple Choice receive incoming nutrients and store them until they are needed by the cell. only function in very specific cell types that receive sensory information. transmit information from outside the cell so that the cell can respond to stimuli. are found embedded in the nuclear membrane and transmit information to the cell's cytoplasm on how to make a protein from the DNA. receive large molecules and transmit them through the membrane.

transmit information from outside the cell so that the cell can respond to stimuli.

Proteins within the extracellular matrix play a role in communicating between the matrix and the cytoskeleton.

true

The hydrophilic parts of the plasma membrane face the outside of the cell and the cytoplasm.

true