Question 1

What component of the cell is the site of polypeptide assembly? ​

Accepted Answer

A) nucleus ​ 
B) mitochondria 
C) vesicles 
D) ribosome 
E) lysosome 
A) nucleus ​ 
B) mitochondria 
C) vesicles 
D) ribosome 
E) lysosome D

Question 2

Which of the following is NOT true of enzyme behavior? ​

Accepted Answer

A) Enzyme shape may change during catalysis. 
B) Enzymes cannot make something happen that would not happen on its own. 
C) All enzymes have an active site where substrates are temporarily bound. 
D) Each enzyme can catalyze a wide variety of different reactions. 
E) Enzymes speed up reactions. 
A) Enzyme shape may change during catalysis. 
B) Enzymes cannot make something happen that would not happen on its own. 
C) All enzymes have an active site where substrates are temporarily bound. 
D) Each enzyme can catalyze a wide variety of different reactions. 
E) Enzymes speed up reactions. D

Question 3

During Krebs cycle reactions the ____________________ NAD and FAD pick up H+ and electrons for processing in the electron transport system.

Accepted Answer

coenzymes

Question 4

Which statement is NOT true of diffusion? ​

Accepted Answer

A) The process requires a concentration gradient. 
B) The particles diffuse faster when the concentration gradient is steep. 
C) The uncharged particles also move down electrical gradients. 
D) Each particle moves down its own concentration gradient. 
E) The process requires ATP. 
A) The process requires a concentration gradient. 
B) The particles diffuse faster when the concentration gradient is steep. 
C) The uncharged particles also move down electrical gradients. 
D) Each particle moves down its own concentration gradient. 
E) The process requires ATP.

Question 5

Glucose moves through a protein transporter down its concentration gradient into the cell. This is an example of ____. ​

Accepted Answer

A) diffusion ​ 
B) endocytosis 
C) exocytosis 
D) osmosis 
E) facilitated diffusion 
A) diffusion ​ 
B) endocytosis 
C) exocytosis 
D) osmosis 
E) facilitated diffusion

Question 6

Assuming one glucose molecule being metabolized, what is the net yield of ATP in the mitochondria under aerobic conditions? ​

Accepted Answer

A) 1 
B) 2 
C) 32 
D) 34 
E) 36 
A) 1 
B) 2 
C) 32 
D) 34 
E) 36

Question 7

What organelle modifies new polypeptides and sorts proteins and lipids? ​

Accepted Answer

A) nucleus 
B) mitochondria 
C) peroxisomes 
D) lysosomes 
E) Golgi body 
A) nucleus 
B) mitochondria 
C) peroxisomes 
D) lysosomes 
E) Golgi body

Question 8

Dehydration synthesis reactions are forms of ____. ​

Accepted Answer

A) catabolism 
B) anabolism 
C) enzymatic deficiency 
D) intermediary metabolism 
E) denaturation 
A) catabolism 
B) anabolism 
C) enzymatic deficiency 
D) intermediary metabolism 
E) denaturation

Question 9

The measure of the concentration of solutes in a solution is ____. ​

Accepted Answer

A) tonicity 
B) osmosis 
C) hydrostatic pressure 
D) diffusion 
E) facilitated diffusion ​ 
A) tonicity 
B) osmosis 
C) hydrostatic pressure 
D) diffusion 
E) facilitated diffusion ​

Question 10

A photograph formed using a microscope is called a(n)____. ​

Accepted Answer

A) spectrograph 
B) x-ray 
C) stereograph 
D) micrograph 
E) microphoto 
A) spectrograph 
B) x-ray 
C) stereograph 
D) micrograph 
E) microphoto

Question 11

Arsenic poisoning affects ATP production by ____. ​

Accepted Answer

A) using excess oxygen 
B) interfering with Krebs cycle and electron transport chain reactions 
C) increasing carbon dioxide levels 
D) blocking glucose entry into cells 
E) blocking the enzymes of glycolysis 
A) using excess oxygen 
B) interfering with Krebs cycle and electron transport chain reactions 
C) increasing carbon dioxide levels 
D) blocking glucose entry into cells 
E) blocking the enzymes of glycolysis

Question 12

The chemical reactions in cells are called ____. ​

Accepted Answer

A) substrate 
B) coenzymes 
C) receptor sites 
D) metabolism 
E) active site 
A) substrate 
B) coenzymes 
C) receptor sites 
D) metabolism 
E) active site

Question 13

The major difference between the smooth and rough ER is that ____. ​

Accepted Answer

A) smooth ER is isolated to the nucleus 
B) vesicles are found only in the smooth ER 
C) rough ER contains ribosomes 
D) smooth ER is the site of polypeptide synthesis 
E) rough ER is the site of lipid synthesis 
A) smooth ER is isolated to the nucleus 
B) vesicles are found only in the smooth ER 
C) rough ER contains ribosomes 
D) smooth ER is the site of polypeptide synthesis 
E) rough ER is the site of lipid synthesis

Question 14

Match between columns
                        Premises: mitochondrial reactions that produce two ATP per glucose molecule
transfer of a phosphate group to another molecule
overall process by which cells produce ATP
uses hydrogen ion gradient to power ATP production
conversion of glucose to pyruvate

Accepted Answer

The Answer of electron transport system and glycolysis and phosphorylation is...

Question 15

Which molecule can enter the Krebs cycle reactions? ​

Accepted Answer

A) glucose 
B) pyruvate 
C) carbon dioxide 
D) NADH 
E) acetyl-CoA 
A) glucose 
B) pyruvate 
C) carbon dioxide 
D) NADH 
E) acetyl-CoA

Question 16

Match between columns
                        Premises: mitochondria
nucleoli
ribosome
RNA 
microtubules
peroxisome
lysosome
Golgibodies 
nucleus
DNA

Accepted Answer

The Answer of chromosomes housed here and encodes genetic information is...

Question 17

All enzymes are which type of organic molecule?

Accepted Answer

A) lipids 
B) minerals 
C) carbohydrates 
D) vitamins 
E) proteins 
A) lipids 
B) minerals 
C) carbohydrates 
D) vitamins 
E) proteins

Question 18

An organelle found in the nucleus is known as a ____. ​

Accepted Answer

A) nucleolus 
B) plastid 
C) vacuole 
D) microvillus 
E) basal body 
A) nucleolus 
B) plastid 
C) vacuole 
D) microvillus 
E) basal body

Question 19

During glycolysis, phosphate groups are transferred to glucose from ATP. This process is called ____. ​

Accepted Answer

A) ionization. 
B) polymerization 
C) phosphorylation 
D) dephosphorylation 
E) opsonization 
A) ionization. 
B) polymerization 
C) phosphorylation 
D) dephosphorylation 
E) opsonization

Question 20

The structure where parts of ribosomes form before passing into the cytoplasm is the ____. ​

Accepted Answer

A) nucleus ​ 
B) nuclear membrane 
C) Golgi body 
D) nucleolus 
E) chromosome 
A) nucleus ​ 
B) nuclear membrane 
C) Golgi body 
D) nucleolus 
E) chromosome

Exam 3: Cells and How They Work

What component of the cell is the site of polypeptide assembly? ​

Which of the following is NOT true of enzyme behavior? ​

During Krebs cycle reactions the ____________________ NAD and FAD pick up H+ and electrons for processing in the electron transport system.

Which statement is NOT true of diffusion? ​

Glucose moves through a protein transporter down its concentration gradient into the cell. This is an example of ____. ​

Assuming one glucose molecule being metabolized, what is the net yield of ATP in the mitochondria under aerobic conditions? ​

What organelle modifies new polypeptides and sorts proteins and lipids? ​

Dehydration synthesis reactions are forms of ____. ​

The measure of the concentration of solutes in a solution is ____. ​

A photograph formed using a microscope is called a(n)____. ​

Arsenic poisoning affects ATP production by ____. ​

The chemical reactions in cells are called ____. ​

The major difference between the smooth and rough ER is that ____. ​

Which molecule can enter the Krebs cycle reactions? ​

All enzymes are which type of organic molecule?

An organelle found in the nucleus is known as a ____. ​

During glycolysis, phosphate groups are transferred to glucose from ATP. This process is called ____. ​

The structure where parts of ribosomes form before passing into the cytoplasm is the ____. ​

Learning About Human Biology

Chemistry of Life

Tissues, Organs, and Organ Systems

The Skeletal System

The Muscular System

Circulation: the Heart and Blood Vessels

Blood

Immunity and Disease

The Respiratory System

Digestion and Nutrition

The Urinary System

The Nervous System

Sensory Systems

The Endocrine System

Reproductive Systems

Development and Aging

Cell Reproduction

Introduction to Genetics

Chromosomes and Human Genetics

DNA Genes and Biotechnology

Genes and Disease: Cancer

Principles of Evolution

Principles of Ecology

Human Impacts on the Biosphere

Filters

What component of the cell is the site of polypeptide assembly?

Which of the following is NOT true of enzyme behavior?

During Krebs cycle reactions the ____________________ NAD and FAD pick up H⁺ and electrons for processing in the electron transport system.

Which statement is NOT true of diffusion?

Glucose moves through a protein transporter down its concentration gradient into the cell. This is an example of ____.

Assuming one glucose molecule being metabolized, what is the net yield of ATP in the mitochondria under aerobic conditions?

What organelle modifies new polypeptides and sorts proteins and lipids?

Dehydration synthesis reactions are forms of ____.

The measure of the concentration of solutes in a solution is ____.

A photograph formed using a microscope is called a(n)____.

Arsenic poisoning affects ATP production by ____.

The chemical reactions in cells are called ____.

The major difference between the smooth and rough ER is that ____.

Which molecule can enter the Krebs cycle reactions?

An organelle found in the nucleus is known as a ____.

During glycolysis, phosphate groups are transferred to glucose from ATP. This process is called ____.

The structure where parts of ribosomes form before passing into the cytoplasm is the ____.