Question 1

The plasma membrane is composed mostly of ____.

Accepted Answer

A) phospholipids 
B) cholesterol 
C) triglycerides 
D) steroids 
E) sphingolipids 
A) phospholipids 
B) cholesterol 
C) triglycerides 
D) steroids 
E) sphingolipids

Question 2

Although some bacteria have membranes around their DNA, we do not call these structures nuclei because they lack ____.

Accepted Answer

A) pores 
B) proteins 
C) phospholipids 
D) a bilayer construction 
E) ribosomes 
A) pores 
B) proteins 
C) phospholipids 
D) a bilayer construction 
E) ribosomes

Question 3

Plasmids are ____.

Accepted Answer

A) circular RNA elements 
B) linear DNA elements 
C) circular DNA found in the nucleus 
D) circular DNA found in the cytoplasm 
E) linear RNA elements 
A) circular RNA elements 
B) linear DNA elements 
C) circular DNA found in the nucleus 
D) circular DNA found in the cytoplasm 
E) linear RNA elements

Question 4

Match between columns
                        Premises: in plants, a secreted extracellular membrane that helps to prevent water loss

Accepted Answer

The Answer of chloroplasts and mitochondria and cuticle and Golgi is...

Question 5

Match between columns
                        Premises: cell wall

Accepted Answer

The Answer of B and C and A and D is...

Question 6

In which cell would you most likely find microtubules?

Accepted Answer

A) leaf cells of cut flowers displayed in a vase 
B) any cell from a deceased animal 
C) neuronal cells that have completed their growth and migration during development 
D) rapidly dividing tumor cells 
E) muscle cells, which do not typically divide 
A) leaf cells of cut flowers displayed in a vase 
B) any cell from a deceased animal 
C) neuronal cells that have completed their growth and migration during development 
D) rapidly dividing tumor cells 
E) muscle cells, which do not typically divide

Question 7

Which cellular component is considered an organelle?

Accepted Answer

A) DNA 
B) transport proteins 
C) plasma membrane 
D) flagella 
E) ribosomes 
A) DNA 
B) transport proteins 
C) plasma membrane 
D) flagella 
E) ribosomes

Question 8

Match between columns
                        Premises: storage of metabolic substances

Accepted Answer

The Answer of Golgi bodies and pseudopods and chloroplasts and is...

Question 9

One of the generalizations of cell theory is that ____.

Accepted Answer

A) all living organisms are made up of cells 
B) all cells divide by meiosis 
C) all cells have a nucleus 
D) cells arise through spontaneous generation 
E) growth is solely the result of cell division 
A) all living organisms are made up of cells 
B) all cells divide by meiosis 
C) all cells have a nucleus 
D) cells arise through spontaneous generation 
E) growth is solely the result of cell division

Question 10

Due to the molecular interactions between lipids and polar molecules, _____.

Accepted Answer

A) water molecules isolate themselves into droplets when mixed with lipids 
B) lipids readily dissolve in water 
C) nonpolar lipids will not interact with water 
D) polar substances pass through a lipid bilayer more readily than nonpolar substances 
E) polar molecules embed in the hydrophobic interior of the phospholipid bilayer 
A) water molecules isolate themselves into droplets when mixed with lipids 
B) lipids readily dissolve in water 
C) nonpolar lipids will not interact with water 
D) polar substances pass through a lipid bilayer more readily than nonpolar substances 
E) polar molecules embed in the hydrophobic interior of the phospholipid bilayer

Question 11

A basement membrane ____.

Accepted Answer

A) is a cell membrane 
B) is a specialized lipid bilayer 
C) forms on the surface of plant cells 
D) supports and organizes animal tissues 
E) is a sheet of non-fibrous material 
A) is a cell membrane 
B) is a specialized lipid bilayer 
C) forms on the surface of plant cells 
D) supports and organizes animal tissues 
E) is a sheet of non-fibrous material

Question 12

Match between columns
                        Premises: organelles of photosynthesis

Accepted Answer

The Answer of ribosomes and mitochondria and peroxisomes and pseudopods is...

Question 13

A molecular analysis of plasma or nuclear membranes would reveal the presence of _____.

Accepted Answer

A) cellulose and chitin 
B) suberin and cutin 
C) phospholipids and proteins 
D) microtubules and microfilaments 
E) phospholipids and nucleic acids 
A) cellulose and chitin 
B) suberin and cutin 
C) phospholipids and proteins 
D) microtubules and microfilaments 
E) phospholipids and nucleic acids

Question 14

Which organelle has enzymes that break down fatty acids, amino acids, and toxins?

Accepted Answer

A) lysosomes 
B) peroxisomes 
C) Golgi bodies 
D) vacuoles 
E) rough ER 
A) lysosomes 
B) peroxisomes 
C) Golgi bodies 
D) vacuoles 
E) rough ER

Question 15

E. coli strains toxic to humans live in the intestine of ____ without sickening them.
I.birds and frogs
II.goats and sheep
III.cattle and deer

Accepted Answer

A) I only 
B) I and II 
C) II and III 
D) I and III 
E) I, II, III 
A) I only 
B) I and II 
C) II and III 
D) I and III 
E) I, II, III

Question 16

Most of the active functions of plasma membranes are carried out by ____.

Accepted Answer

A) cholesterol 
B) proteins 
C) hydrophilic heads 
D) hydrophobic tails 
E) carbohydrates 
A) cholesterol 
B) proteins 
C) hydrophilic heads 
D) hydrophobic tails 
E) carbohydrates

Question 17

Match between columns
                        Premises: receive and process proteins that arrive in vesicles from the rough ER

Accepted Answer

The Answer of DNA molecules and cuticle and peroxisomes and is...

Question 18

Match between columns
                        Premises: The cellular digestion and disposal of biological molecules occurs inside this organelle.

Accepted Answer

The Answer of Golgi body and ribosome and lysosome and is...

Question 19

Match between columns
                        Premises: genetic material

Accepted Answer

The Answer of cuticle and lysosomes and central vacuoles and is...

Question 20

What accounts for the fluidity that defines the fluid mosaic model of a typical plasma membrane?

Accepted Answer

A) The proteins, being large, cause the membrane to jiggle around. 
B) The phospholipids collectively form a jelly-like substance similar to the cytoplasm. 
C) The phospholipids are not bonded to each other and thus are freer to move around. 
D) Water molecules infiltrate the bilayer causing it to become more watery and thus more fluid. 
E) The phospholipids in a typical plasma membrane form covalent bonds which are elastic and allow the membrane to stretch. 
A) The proteins, being large, cause the membrane to jiggle around. 
B) The phospholipids collectively form a jelly-like substance similar to the cytoplasm. 
C) The phospholipids are not bonded to each other and thus are freer to move around. 
D) Water molecules infiltrate the bilayer causing it to become more watery and thus more fluid. 
E) The phospholipids in a typical plasma membrane form covalent bonds which are elastic and allow the membrane to stretch.

Exam 3: Cell Structure

The plasma membrane is composed mostly of ____.

Although some bacteria have membranes around their DNA, we do not call these structures nuclei because they lack ____.

Plasmids are ____.

In which cell would you most likely find microtubules?

Which cellular component is considered an organelle?

One of the generalizations of cell theory is that ____.

Due to the molecular interactions between lipids and polar molecules, _____.

A basement membrane ____.

A molecular analysis of plasma or nuclear membranes would reveal the presence of _____.

Which organelle has enzymes that break down fatty acids, amino acids, and toxins?

E. coli strains toxic to humans live in the intestine of ____ without sickening them. I.birds and frogs II.goats and sheep III.cattle and deer

Most of the active functions of plasma membranes are carried out by ____.

What accounts for the fluidity that defines the fluid mosaic model of a typical plasma membrane?

Invitation to Biology

Molecules of Life

Energy and Metabolism

Capturing and Releasing Energy

Dna Structure and Function

Gene Expression and Control

How Cells Reproduce

Patterns of Inheritance

Biotechnology

Evidence of Evolution

Processes of Evolution

Early Life Forms and the Viruses

Plants and Fungi

Animal Evolution

Population Ecology

Communities and Ecosystems

The Biosphere and Human Effects

Animal Tissues and Organs

How Animals Move

Circulation and Respiration

Immunity

Digestion and Excretion

Neural Control and the Senses

Endocrine Control

Reproduction and Development

Plant Form and Function

Plant Reproduction and Development

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