Question 1

Mitochondria ____.

Accepted Answer

A) have two membranes, both of which are highly folded 
B) are least abundant in metabolically active cells 
C) are present in both prokaryotic and eukaryotic cells 
D) carry out both photosynthesis and cellular respiration 
E) have their own DNA and ribosomes and divide independently of the cell 
A) have two membranes, both of which are highly folded 
B) are least abundant in metabolically active cells 
C) are present in both prokaryotic and eukaryotic cells 
D) carry out both photosynthesis and cellular respiration 
E) have their own DNA and ribosomes and divide independently of the cell

Question 2

Archaea have molecules with reactive side chains in their plasma membrane, so the tails of archaeal phospholipids form covalent bonds with one another. As a result, the plasma membrane is ____.

Accepted Answer

A) more hydrophobic 
B) less rigid 
C) less fluid 
D) more fragile 
E) easily disturbed 
A) more hydrophobic 
B) less rigid 
C) less fluid 
D) more fragile 
E) easily disturbed

Question 3

Which cytoskeletal element separates the cell's duplicated DNA molecules during eukaryotic cell division?

Accepted Answer

A) cilia 
B) flagella 
C) microtubules 
D) microfilaments 
E) intermediate filaments 
A) cilia 
B) flagella 
C) microtubules 
D) microfilaments 
E) intermediate filaments

Question 4

Which structure is the primary site for the production of polypeptide chains?

Accepted Answer

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

Exam 4: Cell Structure

Mitochondria ____.

Archaea have molecules with reactive side chains in their plasma membrane, so the tails of archaeal phospholipids form covalent bonds with one another. As a result, the plasma membrane is ____.

Which cytoskeletal element separates the cell's duplicated DNA molecules during eukaryotic cell division?

Which structure is the primary site for the production of polypeptide chains?

The Science of Biology

Lifes Chemical Basis

Molecules of Life

Ground Rules of Metabolism

Where It Starts-Photosynthesis

Releasing Chemical Energy

DNA Structure and Function

From DNA to Protein

Control of Gene Expression

How Cells Reproduce

Meiosis and Sexual Reproduction

Patterns in Inherited Traits

Human Inheritance

Biotechnology

Evidence of Evolution

Processes of Evolution

Lifes Origin and Early Evolution

Viruses, Bacteria, and Archaea

The Protists

Plant Evolution

Fungi

Animals I: Major Invertebrate Groups

Animals Ii: the Chordates

Plant Tissues

Plant Nutrition and Transport

Plant Reproduction and Development

Animal Tissues and Organ Systems

Neural Control

Sensory Perception

Endocrine Control

Structural Support and Movement

Circulation

Immunity

Respiration

Digestion and Human Nutrition

Maintaining the Internal Environment

Reproduction and Development

Animal Behavior

Population Ecology

Community Ecology

Ecosystems

The Biosphere

Human Effects on the Biosphere

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