Biology 160 - Chapter 4: Multiple Choice

What component of the cell membrane connects signals from the outside of the cell with the inside of the cell and vice versa? extracellular matrix collagen integrins glycoprotein

Integrins

Mitochondria appear in the greatest numbers in cells that are _____. metabolically active dead reproducing undergoing cell division

Metabolically active

Most of the DNA in a eukaryotic cell is in the _____. nucleolus nucleus endomembrane system mitochondria

Nucleus

Digestive cells produce and secrete many enzymes that break down ingested food. These cells have a large number of ribosomes __________. on the Golgi apparatus on the rough endoplasmic reticulum on the smooth endoplasmic reticulum in the cytoplasm

On the rough endoplasmic reticulum.

What do the rough endoplasmic reticulum, Golgi apparatus, and lysosomes have in common? They are constructed of interrelated membranes. They all perform similar roles in the cell. All are located in the nucleus of the cell. They are all physically connected to each other.

They are contructed fo interralated membranes.

The maximum size of a cell is limited by _____. the amount of flexibility it needs to be able to move its need for enough surface area to make exchanges with its environment the materials needed to build it the number of organelles that can be packed inside

its need for enough surface area to make exchanges with its environment.

The internal skeleton of a cell is composed of _____. cellulose and intermediate filaments, microfilaments microtubules, intermediate filaments, and microfilaments cellulose, microtubules, and centrioles

microtubules, intermediate filaments, and microfilaments

The plasma membrane would fit into which general function category? support, movement, and communication breakdown energy production manufacturing

support, movement, and communication

The eyepiece of a light microscope has a magnification level of 10x. If you were looking at a paramecium under the lowest-power objective (4x), what would be the total magnification of the microscope at this setting? 10x 4x 40x 400x

40x

Peroxisomes are organelles that are involved in the _____. synthesis of lipids production of ribosomes generation of energy breakdown of fatty acids

Breakdown of fatty acids

What mitochondrial feature enhances cellular respiration? cristae mitochondrial DNA intermembrane space matrix

Cristae

Which of the following structures is directly involved in the passage of electrical signals between cells as, for example, in the vertebrate heart? tight junctions chemical synapses anchoring junctions gap junctions

Gap juctions.

A researcher made an interesting observation about a protein made by the rough endoplasmic reticulum and eventually used to build a cell's plasma membrane. The protein in the membrane was actually slightly different from the protein made in the ER. The protein was probably altered in the _____. Golgi apparatus nucleus mitochondrion smooth endoplasmic reticulum

Golgi Apparatus

The architecture of cell surfaces can be viewed in the most detail using a __________. scanning electron microscope transmission electron microscope light microscope microscope and fluorescent dyes

Scanning electron microscope.

What is the relationship between the Golgi apparatus and the plasma membrane? The membranes of the Golgi apparatus and the plasma membrane are continuous. The Golgi apparatus begins the formation of the lipids that make up plasma membranes. The finished products of the Golgi apparatus may leave the cell through vesicles that fuse with the plasma membrane. The plasma membrane stops the products of the Golgi apparatus from leaving the cell

The finished products of the Golgi apparatus may leave the cell through vesicles that fuse with the plasma membrane.

To enter or leave any cell, substances must pass through _____. the plasma membrane a microtubule a ribosome the Golgi apparatus the nucleus

The plasma membrane.

Which of the following correctly matches an organelle with its function? The _____ functions in _____. vacuole ... storage mitochondrion ... photosynthesis ribosome ... manufacture of lipids nucleus ... cellular respiration

vacuole ... storage

Which of the following clues would tell you whether a cell is prokaryotic or eukaryotic? the presence or absence of ribosomes. whether or not the cell contains DNA. whether or not the cell is partitioned into compartments by internal membranes. the presence or absence of a rigid cell wall.

whether or not the cell is partitioned into compartments by internal membranes.

Which cellular organelle is required for photosynthesis to occur in eukaryotic cells? Golgi apparatus lysosome chloroplast nucleus

Chloroplast

Where would ribosomes be located that are responsible for producing enzymes which play a role in sugar metabolism? Golgi apparatus smooth endoplasmic reticulum rough endoplasmic reticulum cytosol

Cytosol

Cilia and flagella move thanks to the energy provided by __________, a special motor protein that can harvest energy from ATP. actin pseudopodia basal bodies dynein arms

Dynein arms.

Bacterial cells are prokaryotic; unlike a typical eukaryotic cell, they _____. have more internal membranous compartments lack a plasma membrane have a smaller nucleus lack a nucleus

Lack a nucleus.

Which of the following organelles is found only in animal cells and NOT in most plant cells? lysosome peroxisome chloroplast mitochondrion

Lysosome

Dye injected into a plant cell might be able to enter an adjacent cell through a(n) _____. anchoring junction plasmodesma tight junction microtubule

Plasmodesma

Which of the following is a function of the rough endoplasmic reticulum? synthesizing steroid hormones detoxifying drugs synthesizing receptor proteins storing calcium ions

Synthesyzing receptor proteins.

Which of the following is the most likely consequence for a cell lacking functional lysosomes? The cell becomes crowded with undigested wastes. The cell is unable to grow to a mature size and always remains small. The cell dies because its ATP-synthesizing mechanisms are missing. The cell dies from a lack of enzymes to catalyze metabolic reactions.

The cell becomes crowded with undigested wastes.

Which is a typical function of lysosomes? rebuilding macromolecules, such as glycoproteins keeping bacteria within a safe, contained environment breaking down of damaged organelles, such as mitochondria storage of food particles for energy purposes

breaking down of damaged organelles, such as mitochondria

The contractile vacuole __________. converts light energy to chemical energy eliminates excess water from the cytoplasm of freshwater protists contains trapped bacteria to be digested by the lysosomes contains the cell sap

eliminates excess water from the cytoplasm of freshwater protists

You have identified a new organism. It has ribosomes, plasmodesmata, and cell walls made of cellulose. This new organism is most likely a(n) __________. animal prokaryote plant bacterium

Plant

= Your intestine is lined with individual cells. No fluids leak between these cells from the gut into your body. Why? The intestinal cells are bound together by plasmodesmata. The intestinal cells are bound together by tight junctions. The intestinal cells are fused together into one giant cell. The intestinal cells are bound together by gap junctions.

The intestinal cells are bound together by tight junctions.