Question 1

Which statement about the nucleus is incorrect?

Accepted Answer

A) The nucleus contains the genetic material of the cell. 
B) The nucleus contains the information that ribosomes use to carry out protein synthesis. 
C) The nucleus contains the instructions for copying itself. 
D) The nucleus contains the information that ribosomes use to carry out cellular respiration. 
A) The nucleus contains the genetic material of the cell. 
B) The nucleus contains the information that ribosomes use to carry out protein synthesis. 
C) The nucleus contains the instructions for copying itself. 
D) The nucleus contains the information that ribosomes use to carry out cellular respiration.

Question 2

Cell biologists have introduced radioactively labeled carbohydrates,fats and amino acids to living cells,allowed time for cell metabolism,and then disrupted the cells in a blender and separated out the various cell organelles from the cytoplasm.They found the radioactive molecules could soon be detected as part of various cellular compounds,although the visible cell structures appeared unchanged.This leads us to conclude that

Accepted Answer

A) these "food" molecules are used only for energy. 
B) most cell components are constantly being broken down and rebuilt. 
C) radioactivity was transferred from the introduced molecules to the resident stable molecules. 
D) molecules diffuse at random through the cytoplasm and into cell organelles. 
E) radioactivity has an unusual role in metabolism of living cells. 
A) these "food" molecules are used only for energy. 
B) most cell components are constantly being broken down and rebuilt. 
C) radioactivity was transferred from the introduced molecules to the resident stable molecules. 
D) molecules diffuse at random through the cytoplasm and into cell organelles. 
E) radioactivity has an unusual role in metabolism of living cells.

Question 3

After proteins are formed by the ribosomes located on the endoplasmic reticulum,what is the next organelle to which they could be transported?

Accepted Answer

A) mitochondria 
B) smooth endoplasmic reticulum 
C) Golgi apparatus 
D) nucleus 
A) mitochondria 
B) smooth endoplasmic reticulum 
C) Golgi apparatus 
D) nucleus

Question 4

The cells that line our respiratory tract,and one-celled paramecia both have these short hair-like projections.

Accepted Answer

A) flagella 
B) microfilaments 
C) centrioles 
D) cilia 
E) pili 
A) flagella 
B) microfilaments 
C) centrioles 
D) cilia 
E) pili

Question 5

If a researcher was interested in slowing down the movement of amoebas by disrupting their cell membranes,which protein filaments should she be studying?

Accepted Answer

A) actin 
B) intermediates 
C) microtubules 
D) myosin 
A) actin 
B) intermediates 
C) microtubules 
D) myosin

Question 6

Which statement is NOT true about bacteria?

Accepted Answer

A) Bacteria contain membrane bound organelles. 
B) Some are photosynthetic. 
C) Some are motile due to flagella. 
D) All bacteria are prokaryotes. 
E) Bacteria have a cell wall that contains peptidoglycan. 
A) Bacteria contain membrane bound organelles. 
B) Some are photosynthetic. 
C) Some are motile due to flagella. 
D) All bacteria are prokaryotes. 
E) Bacteria have a cell wall that contains peptidoglycan.

Question 7

Which is NOT a characteristic of mitochondria?

Accepted Answer

A) A mitochondrion has two membranes. 
B) Mitochondria are the site of cellular respiration. 
C) Mitochondria have a single membrane for cellular respiration. 
D) Mitochondria contain DNA and ribosomes. 
E) The inner space of the mitochondrion contains a fluid matrix. 
A) A mitochondrion has two membranes. 
B) Mitochondria are the site of cellular respiration. 
C) Mitochondria have a single membrane for cellular respiration. 
D) Mitochondria contain DNA and ribosomes. 
E) The inner space of the mitochondrion contains a fluid matrix.

Question 8

Each time the water in a cell freezes slowly,long sharp crystals spear through the membrane structures of the cell.However,in the frozen state,virtually no chemical reactions occur.The most likely explanation for the bad taste of meat that has "freezer burn" from repeated freezing is the destruction of

Accepted Answer

A) the Golgi bodies and their vesicles. 
B) lysosomes and resultant autodigestion. 
C) rough endoplasmic reticulum causing the release of ribosomes. 
D) ribosomes causing them to break into subunits. 
E) the nuclear membrane causing mixing of nucleoplasm and cytoplasm. 
A) the Golgi bodies and their vesicles. 
B) lysosomes and resultant autodigestion. 
C) rough endoplasmic reticulum causing the release of ribosomes. 
D) ribosomes causing them to break into subunits. 
E) the nuclear membrane causing mixing of nucleoplasm and cytoplasm.

Question 9

What cellular organelle is responsible for receiving the mRNA and turning it into a protein?

Accepted Answer

A) Golgi body 
B) ribosome 
C) nucleus 
D) lysosome 
A) Golgi body 
B) ribosome 
C) nucleus 
D) lysosome

Question 10

The springtail is a very common small insect that lives in rotten logs,rich soil,and other humid places.Its cuticle is water repelling (hydrophobic)except for a strange organ,the collophore,on its ventral side.Because it lacks the excretory organs of other insects,the springtail has this organ in contact with the water (it is responsible for ion balance and secretion of wastes).If we examined the cell structure of this collophore,we would expect to find a high number of

Accepted Answer

A) nuclei. 
B) ribosomes. 
C) Golgi bodies. 
D) lysosomes. 
E) centrioles. 
A) nuclei. 
B) ribosomes. 
C) Golgi bodies. 
D) lysosomes. 
E) centrioles.

Question 11

As a cell increases in size,the:

Accepted Answer

A) surface area increases as the volume decreases. 
B) surface area,volume and surface area volume ratio increases. 
C) surface area and volume increase,but the surface area: volume ratio decreases. 
D) surface area and volume decreases the surface area: volume ratio increases. 
A) surface area increases as the volume decreases. 
B) surface area,volume and surface area volume ratio increases. 
C) surface area and volume increase,but the surface area: volume ratio decreases. 
D) surface area and volume decreases the surface area: volume ratio increases.

Question 12

What figure has the greatest surface area (height x width x number of sides x number of cubes)?

Accepted Answer

A) Figure A 
B) Figure B 
C) Figure C 
D) All of these are the same. 
A) Figure A 
B) Figure B 
C) Figure C 
D) All of these are the same.

Question 13

Which of the following gives rise to both lysosomes and vesicles?

Accepted Answer

A) rough endoplasmic reticulum 
B) mitochondria 
C) Golgi apparatus 
D) ribosomes 
A) rough endoplasmic reticulum 
B) mitochondria 
C) Golgi apparatus 
D) ribosomes

Question 14

During cellular movement which of the following filaments will be the ones that are responsible for attaching and pulling the other filaments along?

Accepted Answer

A) actin 
B) myosin 
C) trypsin 
D) intermediate filaments 
A) actin 
B) myosin 
C) trypsin 
D) intermediate filaments

Exam 4: Cell Structure and Function

Which statement about the nucleus is incorrect?

After proteins are formed by the ribosomes located on the endoplasmic reticulum,what is the next organelle to which they could be transported?

The cells that line our respiratory tract,and one-celled paramecia both have these short hair-like projections.

If a researcher was interested in slowing down the movement of amoebas by disrupting their cell membranes,which protein filaments should she be studying?

Which statement is NOT true about bacteria?

Which is NOT a characteristic of mitochondria?

What cellular organelle is responsible for receiving the mRNA and turning it into a protein?

As a cell increases in size,the:

What figure has the greatest surface area (height x width x number of sides x number of cubes)?

Which of the following gives rise to both lysosomes and vesicles?

During cellular movement which of the following filaments will be the ones that are responsible for attaching and pulling the other filaments along?

A View of Life

Basic Chemistry

The Chemistry of Organic Molecules

Membrane Structure and Function

Metabolism: Energy and Enzymes

Photosynthesis

Cellular Respiration

The Cell Cycle and Cellular Reproduction

Meiosis and Sexual Reproduction

Mendelian Patterns of Inheritance

Molecular Biology of the Gene

Regulation of Gene Expression

Biotechnology and Genomics

Darwin and Evolution

How Populations Evolve

Speciation and Macroevolution

Origin and History of Life

Taxonomy,systematics,and Phylogeny

Viruses,bacteria,and Archaea

Protist Evolution and Diversity

Fungi Evolution and Diversity

Plant Evolution and Diversity

Flowering Plants: Structure and Organization

Flowering Plants: Nutrition and Transport

Flowering Plants: Control of Growth Responses

Flowering Plants: Reproduction

Invertebrate Evolution

Vertebrate Evolution

Human Evolution

Animal Organization and Homeostasis

Circulation and Cardiovascular Systems

The Lymphatic and Immune Systems

Digestive Systems and Nutrition

Respiratory Systems

Body Fluid Regulation and Excretory Systems

Neurons and Nervous Systems

Sense Organs

Locomotion and Support Systems

Hormones and Endocrine Systems

Reproductive Systems

Animal Development

Behavioral Ecology

Population Ecology

Community and Ecosystem Ecology

Major Ecosystems of the Biosphere

Conservation of Biodiversity

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