Question 1

The simplest cells are the:

Accepted Answer

A) eukaryotic bacteria 
B) prokaryotic bacteria 
C) animal cells 
D) cells of fungi 
A) eukaryotic bacteria 
B) prokaryotic bacteria 
C) animal cells 
D) cells of fungi B

Question 2

Explain what happens to plant and animal cells when placed in hypertonic,hypotonic and isotonic environments.

Accepted Answer

Plant cells will become turgid in hypotonic environments while animal cells will lyse due to lack of a cell wall.Plant cells will wilt in an isotonic environment and animal cells are fine in this isotonic environment.In hypertonic solutions,plant cells plasmolyse and lose water and animal cells crenate or shrink as well.

Question 3

______________ function in the collection,packaging,and distribution of molecules made in the cell.

Accepted Answer

A) Mitochondria 
B) Ribosomes 
C) Golgi bodies 
D) Peroxisomes 
A) Mitochondria 
B) Ribosomes 
C) Golgi bodies 
D) Peroxisomes C

Question 4

Which of the following causes a dividing cell to pinch in two by contracting like a purse string?

Accepted Answer

A) Microtubles 
B) Actin filaments 
C) Intermediate filaments 
D) Centrioles 
E) Pili 
A) Microtubles 
B) Actin filaments 
C) Intermediate filaments 
D) Centrioles 
E) Pili

Question 5

If a paramecium's contractile vacuole stops working,what might happen to the organism?

Accepted Answer

A) It would shrink. 
B) It would stop making proteins. 
C) It would stop doing cell respiration. 
D) Its chromosomes would not replicate. 
E) It would fill with water and lysE. 
A) It would shrink. 
B) It would stop making proteins. 
C) It would stop doing cell respiration. 
D) Its chromosomes would not replicate. 
E) It would fill with water and lysE.

Question 6

Which is incorrect about the plasma membrane?

Accepted Answer

A) It has a hydrophobic interior and hydrophilic region that faces water. 
B) Cholesterol affects the fluid nature of the membrane. 
C) Proteins embedded in the lipid bilayer do not move. 
D) Transmembrane proteins span the membrane. 
E) It surrounds all living cells. 
A) It has a hydrophobic interior and hydrophilic region that faces water. 
B) Cholesterol affects the fluid nature of the membrane. 
C) Proteins embedded in the lipid bilayer do not move. 
D) Transmembrane proteins span the membrane. 
E) It surrounds all living cells.

Question 7

Which of the following functions to isolate particular chemical activities from the rest of the cell?

Accepted Answer

A) Peroxisomes 
B) Golgi complex 
C) Chloroplasts 
D) Nucleus 
E) Ribosomes 
A) Peroxisomes 
B) Golgi complex 
C) Chloroplasts 
D) Nucleus 
E) Ribosomes

Question 8

In the sodium-potassium pump,sugars and amino acids,or other molecules,are brought through the membrane along with sodium ions through:

Accepted Answer

A) coupled channels 
B) chemiosmosis 
C) proton pumps 
D) receptor proteins 
A) coupled channels 
B) chemiosmosis 
C) proton pumps 
D) receptor proteins

Question 9

The nucleus of the eukaryotic cell functions:

Accepted Answer

A) as the command center for the cell 
B) to store the cell's hereditary information 
C) to house the nucleolus 
D) All of the choices are correct. 
A) as the command center for the cell 
B) to store the cell's hereditary information 
C) to house the nucleolus 
D) All of the choices are correct.

Question 10

As cells increase in size,cell ________________ increases more rapidly than cell surface area.

Accepted Answer

The answer of As cells increase in size,cell ________________ increases...

Question 11

Which of the following microscopes has the strongest resolving power?

Accepted Answer

A) Scanning electron microscope 
B) Transmission electron microscope 
C) Compound microscope 
D) Phase-contrast microscope 
E) Dark-field microscope 
A) Scanning electron microscope 
B) Transmission electron microscope 
C) Compound microscope 
D) Phase-contrast microscope 
E) Dark-field microscope

Question 12

Which of the following is not an organelle?

Accepted Answer

A) Nucleus 
B) Mitochondria 
C) Lysosome 
D) Chloroplast 
E) Ribosome 
A) Nucleus 
B) Mitochondria 
C) Lysosome 
D) Chloroplast 
E) Ribosome

Question 13

Which of the following kingdoms are prokaryotes?

Accepted Answer

A) Fungi 
B) Archaea 
C) Plantae 
D) Animalia 
E) Protista 
A) Fungi 
B) Archaea 
C) Plantae 
D) Animalia 
E) Protista

Question 14

Two organelles that are believed to have once been free-living bacterial cells are __________________ and _________________.

Accepted Answer

A) ribosomes;nucleolus 
B) Golgi complex;endoplasmic reticulum 
C) peroxisomes;lysosomes 
D) chloroplasts;mitochondria 
A) ribosomes;nucleolus 
B) Golgi complex;endoplasmic reticulum 
C) peroxisomes;lysosomes 
D) chloroplasts;mitochondria

Question 15

An extracellular matrix is produced by glycoprotein secretion by:

Accepted Answer

A) fungal cells 
B) bacterial cells 
C) plant cells 
D) animal cells 
A) fungal cells 
B) bacterial cells 
C) plant cells 
D) animal cells

Question 16

Select the membrane molecule that is made up of a polar region with two nonpolar fatty acid tails.

Accepted Answer

A) Phospholipids 
B) Cell surface proteins 
C) Transmembrane proteins 
D) Carbohydrate chains 
A) Phospholipids 
B) Cell surface proteins 
C) Transmembrane proteins 
D) Carbohydrate chains

Question 17

Explain an instance when a membrane defect can cause a disease.

Accepted Answer

In cystic fibrosis,there is an inherited

Question 18

Describe the path a protein destined for secretion takes from synthesis to when it leaves the cell.

Accepted Answer

Answers should include that proteins are

Question 19

Which organisms do NOT have centrioles?

Accepted Answer

A) Animals and protists 
B) Plants and fungi 
C) Plants and animals 
D) Fungi and protists 
A) Animals and protists 
B) Plants and fungi 
C) Plants and animals 
D) Fungi and protists

Question 20

The phospholipids of a cell membrane are arranged into a ________________.

Accepted Answer

The answer of The phospholipids of a cell membrane are...

Exam 4: Cells

The simplest cells are the:

Explain what happens to plant and animal cells when placed in hypertonic,hypotonic and isotonic environments.

______________ function in the collection,packaging,and distribution of molecules made in the cell.

Which of the following causes a dividing cell to pinch in two by contracting like a purse string?

If a paramecium's contractile vacuole stops working,what might happen to the organism?

Which is incorrect about the plasma membrane?

Which of the following functions to isolate particular chemical activities from the rest of the cell?

In the sodium-potassium pump,sugars and amino acids,or other molecules,are brought through the membrane along with sodium ions through:

The nucleus of the eukaryotic cell functions:

As cells increase in size,cell ________________ increases more rapidly than cell surface area.

Which of the following microscopes has the strongest resolving power?

Which of the following is not an organelle?

Which of the following kingdoms are prokaryotes?

Two organelles that are believed to have once been free-living bacterial cells are __________________ and _________________.

An extracellular matrix is produced by glycoprotein secretion by:

Select the membrane molecule that is made up of a polar region with two nonpolar fatty acid tails.

Explain an instance when a membrane defect can cause a disease.

Describe the path a protein destined for secretion takes from synthesis to when it leaves the cell.

Which organisms do NOT have centrioles?

The phospholipids of a cell membrane are arranged into a ________________.

The Science of Biology

The Chemistry of Life

Molecules of Life

Energy and Life

Photosynthesis: Acquiring Energy From the Sun

How Cells Harvest Energy From Food

Mitosis

Meiosis

Foundations of Genetics

DNA: the Genetic Material

How Genes Work

Genomics and Biotechnology

Evolution and Natural Selection

How We Name Living Things

Prokaryotes: the First Single-Celled Creatures

Protists: Advent of the Eukaryotes

Fungi Invade the Land

Evolution of the Animal Phyla

History of the Vertebrates

How Humans Evolved

The Animal Body and How It Moves

Circulation

Respiration

The Path of Food Through the Animal Body

Maintaining the Internal Environment

How the Animal Body Defends Itself

The Nervous System

The Senses

Chemical Signaling Within the Animal Body

Reproduction and Development

Evolution of Plants

Plant Form and Function

Plant Reproduction and Growth

Populations and Communities

Ecosystems

Behavior and the Environment

Human Influences on the Living World

Filters

Two organelles that are believed to have once been free-living bacterial cells are __ and _.