cells, organelles, and transport pt 3

Which of the following organelles produces lysosomes?

A. 

Peroxisome

B. 

Golgi apparatus

C. 

Smooth endoplasmic reticulum

D. 

Rough endoplasmic reticulum

E. 

Nucleus

b

Which of the following is used by peroxisomes to oxidize substances?

A. 

Hydrogen

B. 

Carbon

C. 

Nitrogen

D. 

Carbon dioxide

E. 

Hydrogen peroxide

e

Microtubule Organizing Centers are found as __________.

A. 

9 + 2 array

B. 

9 x 3 array

C. 

60S

D. 

70S

E. 

80S

b

If a mutation in animal cells causes mitochondria to be defective, then which of the following will occur?

A. 

Cells will die due to increased aerobic respiration

B. 

Cells will die due to increased by-products of photorespiration

C. 

Cells will die due to a lack of energy to drive basic functions

D. 

Cells will survive but will be unable to produce lipids

E. 

Cells will survive but will be unable to produce glycoproteins

c

Which of the following is the most common protein found in the extracellular matrix?

A. 

Integrin

B. 

Fibronectin

C. 

Collagen

D. 

Intermediate filaments

E. 

Microtubules

c

Which cell junction produces a seal to prevent the movement of molecules between cells?

A. 

Anchoring junctions

B. 

Gap junctions

C. 

Plasmodesmata

D. 

Tight junctions

E. 

Adhesion protein

d

Animal cells that line the digestive tract in regions where substances need to go through the cells into the blood tend to have __________.

A. 

Anchoring junctions

B. 

Gap junctions

C. 

Tight junctions

D. 

Plasmodesmata

E. 

Desmotubules

c

Which of the following cell junctions bind to keratin filaments?

A. 

Gap junctions

B. 

Desmosomes

C. 

Plasmodesmata

D. 

Tight junctions

E. 

Adherens junctions

b

Which of the following do both prokaryotes and eukaryotes have?

A. 

Plasma membrane

B. 

Nucleus

C. 

Nucleoid

D. 

Peptidoglycan cell walls

E. 

Microtubule flagella

a

If a plant cell is in an isotonic solution, the cell will most likely __________.

A. 

Undergo plasmolysis

B. 

Undergo apoptosis

C. 

Lyse

D. 

Become turgid

E. 

Become flaccid

e

Which of the following best describes primary active transport?

A. 

Use of ATP to directly move particles against concentration gradients

B. 

Use of ATP to directly move particles with concentration gradients

C. 

Use of indirect energy to move particles with concentration gradients

D. 

Use of indirect energy to move particles against concentration gradients

E. 

Use of chemical alteration to move particles

a

Each of the following is consistent with the cell theory EXCEPT one. Which one is the EXCEPTION?

A. 

All organisms are made up of one or more cells

B. 

Cells can form spontaneously

C. 

Cells are the basic unit of structure in all organisms

D. 

Cells contain hereditary information

E. 

Cells are the basic unit of function in all organisms

b

Which of the following models describes the structure of the cell membrane?

A. 

Lock and key model

B. 

Cell theory

C. 

Fluid mosaic model

D. 

Induced fit model

E. 

RNA world theory

c

Which of the following best describes the structure and function of the nuclear envelope?

A. 

A double membrane with two phospholipid bilayers that have pores to allow molecules to enter and exit the nucleus

B. 

A phospholipid bilayer that acts as a barrier to prevents all molecules from entering or exiting the nucleus

C. 

A dense area within the nucleus for ribosome and rRNA synthesis

D. 

A single phospholipid layer that allows for the exchange of substances between the cytoplasm and inside of the nucleus

E. 

A dense network of protein filaments that provide mechanical support to the nucleus

a

Which of the following cellular structures can act as a railroad network for intracellular transport?

A. 

Plasma membrane

B. 

Transport proteins

C. 

Cytoskeleton

D. 

Nuclear lamina

E. 

Centrosomes

c

Which of the following components of the cytoskeleton is responsible for the cleavage furrow of mitosis?

A. 

Intermediate filaments

B. 

Microtubules

C. 

Microfilaments

D. 

Centrosomes

E. 

Proteoglycans

c

Cilia and flagella are made up of __________.

A. 

Carbohydrates

B. 

Microfilaments

C. 

Intermediate filaments

D. 

Microtubules

E. 

Phospholipids

d

All of the statements below are pieces of evidence that support the endosymbiotic theory EXCEPT for one. Which one is the EXCEPTION?

A. 

Mitochondria and chloroplasts have circular DNA

B. 

Mitochondria and chloroplasts are found in prokaryotic cells

C. 

Mitochondria and chloroplasts divide by binary fission

D. 

Mitochondria and chloroplasts have their own prokaryotic ribosomes

b

Which of the following techniques would be most effective in removing a transmembrane protein from a cell’s plasma membrane?

A. 

Increasing the extracellular salt concentration

B. 

Increasing the intracellular salt concentration

C. 

Adding a strong acid

D. 

Adding a detergent

E. 

Increasing the temperature

d

Which of the following best describes an adherens junction?

A. 

Attaches cells to adjacent cells, forming thick bands that allow for organization into tissues

B. 

Attaches cells to the extracellular matrix with an attachment to intracellular intermediate filaments

C. 

Forms narrow tunnels between cells, allowing for intercellular communication and passage of small molecules

D. 

Seals adjacent cells together to prevent the leakage of material between them

E. 

Attaches cells the basement membrane with an attachment to intracellular actin filaments for stability

a

All of the following are examples of endocytosis EXCEPT for one. Which one is the EXCEPTION?

A. 

An immune cell engulfing a pathogen

B. 

A cell pinching its membrane inwards to incorporate extracellular fluids

C. 

A clathrin protein pulling the cell membrane inwards to create a vesicle around an external signaling molecule

D. 

A neuron releasing neurotransmitters

d

Which of the following is not a component of the extracellular matrix?

A. 

Glycoproteins

B. 

Integrin

C. 

Fibronectin

D. 

Hemoglobin

E. 

Collagen

d

Which of the following transmembrane proteins directly anchors components of the extracellular matrix to the plasma membrane?

A. 

Fibronectin

B. 

Collagen

C. 

Integrin

D. 

Kinesin

E. 

Chitin

c

Which of the following describes the arrangement of microtubules in cilia and flagella?

A. 

9x3

B. 

3x9

C. 

Two perpendicular microtubules

D. 

9+2

E. 

6+2

d