Question 1

Plasmodesmata are most similar to ____.

Accepted Answer

A) gap junctions in animal cells 
B) tight junctions in bacteria 
C) basement membranes in animal cells 
D) adhering junctions in heart muscle 
E) both tight junctions in bacteria and adhering junctions in heart muscle 
A) gap junctions in animal cells 
B) tight junctions in bacteria 
C) basement membranes in animal cells 
D) adhering junctions in heart muscle 
E) both tight junctions in bacteria and adhering junctions in heart muscle

Question 2

A hypothetical "microbullet" shot through a phospholipid bilayer will pass the bilayer components in which order?

Accepted Answer

A) tail → tail → head → head 
B) head → tail → tail → head 
C) head → tail → head → tail 
D) head → head → tail → tail 
E) tail → head → tail → head 
A) tail → tail → head → head 
B) head → tail → tail → head 
C) head → tail → head → tail 
D) head → head → tail → tail 
E) tail → head → tail → head

Question 3

Which organelle functions in the recapture of energy from organic compounds?

Accepted Answer

A) Golgi body 
B) mitochondria 
C) lysosome 
D) ribosome 
E) endoplasmic reticulum 
A) Golgi body 
B) mitochondria 
C) lysosome 
D) ribosome 
E) endoplasmic reticulum

Question 4

The phospholipids of plasma membranes contain _____.

Accepted Answer

A) a hydrophobic head and a hydrophilic tail 
B) two hydrophobic heads and a hydrophilic tail 
C) a hydrophobic head and two hydrophobic tails 
D) a hydrophilic head and two hydrophobic tails 
E) a hydrophilic head and two hydrophilic tails 
A) a hydrophobic head and a hydrophilic tail 
B) two hydrophobic heads and a hydrophilic tail 
C) a hydrophobic head and two hydrophobic tails 
D) a hydrophilic head and two hydrophobic tails 
E) a hydrophilic head and two hydrophilic tails

Question 5

Ribosomes are ____.

Accepted Answer

A) membrane-enclosed organelles 
B) attached to the smooth endoplasmic reticulum 
C) involved in polypeptide transport 
D) required for DNA synthesis 
E) involved in polypeptide synthesis 
A) membrane-enclosed organelles 
B) attached to the smooth endoplasmic reticulum 
C) involved in polypeptide transport 
D) required for DNA synthesis 
E) involved in polypeptide synthesis

Question 6

The plasma membrane _____.

Accepted Answer

A) controls the contents of the cell 
B) is composed mostly of cholesterol 
C) is permeable to ions and polar molecules 
D) is free of proteins 
E) is rigid and impermeable 
A) controls the contents of the cell 
B) is composed mostly of cholesterol 
C) is permeable to ions and polar molecules 
D) is free of proteins 
E) is rigid and impermeable

Question 7

The endomembrane system is composed of ____.

Accepted Answer

A) microtubules, microfilaments, and intermediate filaments 
B) endoplasmic reticulum, Golgi apparatus, and peroxisomes 
C) vesicles, peroxisomes, and chloroplasts 
D) mitochondria, Golgi apparatus, and ribosomes 
E) plasma membrane, nuclear envelope, and thylakoid membranes 
A) microtubules, microfilaments, and intermediate filaments 
B) endoplasmic reticulum, Golgi apparatus, and peroxisomes 
C) vesicles, peroxisomes, and chloroplasts 
D) mitochondria, Golgi apparatus, and ribosomes 
E) plasma membrane, nuclear envelope, and thylakoid membranes

Question 8

In which part of a chloroplast does photosynthesis occur?

Accepted Answer

A) stroma 
B) outermost membrane 
C) innermost membrane 
D) between the two outer membranes 
E) ribosomes 
A) stroma 
B) outermost membrane 
C) innermost membrane 
D) between the two outer membranes 
E) ribosomes

Question 9

Match between columns
                        Premises: made of the protein tubulin and serve as dynamic scaffolding for the cell

Accepted Answer

The Answer of dynein and myosin and microtubules and microfilaments is...

Question 10

Cardiac muscle undergoes fast, synchronous contractions stimulated by ion flow. Which type of cellular junction is essential for achieving this action in cardiac muscle?

Accepted Answer

A) gap junctions 
B) tight junctions 
C) plasmodesmata 
D) adhering junctions 
E) desmosomes 
A) gap junctions 
B) tight junctions 
C) plasmodesmata 
D) adhering junctions 
E) desmosomes

Question 11

The presence of circular DNA in mitochondria and chloroplasts suggests that these organelles evolved from ____.

Accepted Answer

A) bacteria 
B) nuclei 
C) single celled eukaryotes 
D) anaerobic microorganisms 
E) archaea 
A) bacteria 
B) nuclei 
C) single celled eukaryotes 
D) anaerobic microorganisms 
E) archaea

Question 12

The enzyme catalase functions in the breakdown of hydrogen peroxide, a toxic by-product of fatty acid digestion. In which cellular organelle is catalase found?

Accepted Answer

A) Golgi body 
B) peroxisome 
C) lysosome 
D) ribosome 
E) mitochondrion 
A) Golgi body 
B) peroxisome 
C) lysosome 
D) ribosome 
E) mitochondrion

Question 13

A water-soluble hormone (signaling molecule)would most likely bind to which membrane protein?

Accepted Answer

A) active transporter 
B) recognition 
C) receptor 
D) passive transporter 
E) regulator 
A) active transporter 
B) recognition 
C) receptor 
D) passive transporter 
E) regulator

Question 14

Extracellular matrix is typically composed of ____.

Accepted Answer

A) polysaccharides and fibrous proteins 
B) fibrous proteins and microtubules 
C) polysaccharides and microfilaments 
D) fibrous proteins and phospholipids 
E) polysaccharides and phospholipids 
A) polysaccharides and fibrous proteins 
B) fibrous proteins and microtubules 
C) polysaccharides and microfilaments 
D) fibrous proteins and phospholipids 
E) polysaccharides and phospholipids

Question 15

Biofilms found in nature ____.

Accepted Answer

A) contain only bacteria 
B) are composed of multicellular organisms 
C) are most often found on liquid surfaces 
D) are communities of unicellular organisms 
E) contain only closely related organisms 
A) contain only bacteria 
B) are composed of multicellular organisms 
C) are most often found on liquid surfaces 
D) are communities of unicellular organisms 
E) contain only closely related organisms

Question 16

Match between columns
                        Premises: assembles amino acid into polypeptide chains

Accepted Answer

The Answer of central vacuoles and cuticle and DNA molecules is...

Question 17

Vesicles from the Golgi body that will become lysosomes contain enzymes for ____.

Accepted Answer

A) aerobic respiration 
B) photosynthesis 
C) breaking down cellular debris 
D) protein synthesis 
E) digesting amino acids and fatty acids 
A) aerobic respiration 
B) photosynthesis 
C) breaking down cellular debris 
D) protein synthesis 
E) digesting amino acids and fatty acids

Question 18

Eukaryotic cells have their DNA enclosed in the _____.

Accepted Answer

A) plasma membrane 
B) nucleus 
C) nucleoid 
D) nuclear envelope 
E) nucleotide 
A) plasma membrane 
B) nucleus 
C) nucleoid 
D) nuclear envelope 
E) nucleotide

Question 19

Match between columns
                        Premises: motor protein that associates with microfilaments to generate muscle contraction

Accepted Answer

The Answer of microfilaments and microtubules and dynein and intermediate is...

Question 20

If the size of a cell doubles, what will be its surface area to volume ratio?

Accepted Answer

A) 8:4 
B) 4:8 
C) 16:4 
D) 16:8 
E) 64:16 
A) 8:4 
B) 4:8 
C) 16:4 
D) 16:8 
E) 64:16

Exam 3: Cell Structure

Plasmodesmata are most similar to ____.

A hypothetical "microbullet" shot through a phospholipid bilayer will pass the bilayer components in which order?

Which organelle functions in the recapture of energy from organic compounds?

The phospholipids of plasma membranes contain _____.

Ribosomes are ____.

The plasma membrane _____.

The endomembrane system is composed of ____.

In which part of a chloroplast does photosynthesis occur?

Cardiac muscle undergoes fast, synchronous contractions stimulated by ion flow. Which type of cellular junction is essential for achieving this action in cardiac muscle?

The presence of circular DNA in mitochondria and chloroplasts suggests that these organelles evolved from ____.

The enzyme catalase functions in the breakdown of hydrogen peroxide, a toxic by-product of fatty acid digestion. In which cellular organelle is catalase found?

A water-soluble hormone (signaling molecule)would most likely bind to which membrane protein?

Extracellular matrix is typically composed of ____.

Biofilms found in nature ____.

Vesicles from the Golgi body that will become lysosomes contain enzymes for ____.

Eukaryotic cells have their DNA enclosed in the _____.

If the size of a cell doubles, what will be its surface area to volume ratio?

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

Filters