Question 1

Which carbohydrate, found only in plants, is indigestible by humans?

Accepted Answer

A) glycogen 
B) starch 
C) glucose 
D) sucrose 
E) cellulose 
A) glycogen 
B) starch 
C) glucose 
D) sucrose 
E) cellulose E

Question 2

A peptide bond is found between the amino group of one amino acid and the ____________________ group of a second amino acid.

Accepted Answer

carboxyl

Question 3

What fat is the building block for cell membranes?

Accepted Answer

A) transfatty acids 
B) sterols 
C) phospholipids 
D) triglycerides 
E) cholesterol 
A) transfatty acids 
B) sterols 
C) phospholipids 
D) triglycerides 
E) cholesterol C

Question 4

Each carbon atom can share pairs of electrons with as many as ____ other atoms.

Accepted Answer

A) two 
B) three 
C) four 
D) five 
E) six 
A) two 
B) three 
C) four 
D) five 
E) six

Question 5

The building block of large carbohydrates is ____.

Accepted Answer

A) amino acids 
B) glycerol 
C) polysaccharide 
D) glucose 
E) glycogen 
A) amino acids 
B) glycerol 
C) polysaccharide 
D) glucose 
E) glycogen

Question 6

A phospholipid molecule contains a "head" portion that ____.

Accepted Answer

A) is hydrophilic 
B) is derived from cholesterol 
C) contains two fatty acid chains 
D) is similar in structure to a triglyceride 
E) forms a hydrophobic barrier 
A) is hydrophilic 
B) is derived from cholesterol 
C) contains two fatty acid chains 
D) is similar in structure to a triglyceride 
E) forms a hydrophobic barrier

Question 7

A protein combined with cholesterol in the blood is an example of a(n)____.

Accepted Answer

A) irregular protein 
B) lipoprotein 
C) glycoprotein 
D) denatured protein 
E) collagen 
A) irregular protein 
B) lipoprotein 
C) glycoprotein 
D) denatured protein 
E) collagen

Question 8

A tracer is a substance with what attached to it?

Accepted Answer

A) a radioisotope 
B) water 
C) glucose 
D) ion 
E) antibodies 
A) a radioisotope 
B) water 
C) glucose 
D) ion 
E) antibodies

Question 9

The interaction of many separate polypeptide chains determines the ____________________ structure of a protein molecule.

Accepted Answer

The answer of The interaction of many separate polypeptide chains...

Question 10

Glycogen, starch and cellulose are examples of ____________________ or complex carbohydrates.

Accepted Answer

The answer of Glycogen, starch and cellulose are examples of...

Question 11

The atomic number denotes the number of ____ in an atom of a particular element.

Accepted Answer

A) electrons 
B) neutrons 
C) energy levels 
D) protons 
E) isotopes 
A) electrons 
B) neutrons 
C) energy levels 
D) protons 
E) isotopes

Question 12

The sequence of amino acids in a protein represents its ____.

Accepted Answer

A) primary structure 
B) secondary structure 
C) three dimensional shape 
D) tertiary folding pattern 
E) biological function 
A) primary structure 
B) secondary structure 
C) three dimensional shape 
D) tertiary folding pattern 
E) biological function

Question 13

When an atom's outer electron shell is filled, the atom is ____.

Accepted Answer

A) unstable 
B) positively charged 
C) polarized 
D) most stable 
E) isotope 
A) unstable 
B) positively charged 
C) polarized 
D) most stable 
E) isotope

Question 14

Match between columns
                        Premises: Three of these basic units found in triglycerides
Basic units of glycogen
Used to synthesize hormones and vitamins
Basic unit of genetic material
Basic units of proteins
Forms the backbone of phospholipids

Accepted Answer

The Answer of amino acids and glucose and fatty acids is...

Question 15

Which pesticide can trigger rashes, hives, headaches and asthma?

Accepted Answer

A) atrazine 
B) growth hormone 
C) anthocyanin 
D) DDT 
E) sterols 
A) atrazine 
B) growth hormone 
C) anthocyanin 
D) DDT 
E) sterols

Question 16

Radioisotopes ____.

Accepted Answer

A) are unstable and emit energy and particles to stabilize themselves. 
B) are different elements from the "standard" elements. 
C) are very stable and do not change over time. 
D) are so unstable that they rarely exist in nature 
E) exist only for carbon and oxygen 
A) are unstable and emit energy and particles to stabilize themselves. 
B) are different elements from the "standard" elements. 
C) are very stable and do not change over time. 
D) are so unstable that they rarely exist in nature 
E) exist only for carbon and oxygen

Question 17

Match between columns
                        Premises: associated with the transfer of electrons between atoms
weak bonds between water molecules
unequal sharing of electrons
binds amino acids within a Protein
forms quaternary protein structure

Accepted Answer

The Answer of hydrogen and ionic and disulfide and peptide is...

Question 18

Fats that stay liquid at room temperature are ____.

Accepted Answer

A) animal fats 
B) unsaturated 
C) transfatty acids 
D) triglycerides 
E) cholesterol 
A) animal fats 
B) unsaturated 
C) transfatty acids 
D) triglycerides 
E) cholesterol

Question 19

____________________ determines the order in which amino acids form the primary structure of a protein.

Accepted Answer

The answer of ____________________ determines the order in which amino...

Question 20

In saturated fats the fatty acid backbones have only a(n)____________________ covalent bond.

Accepted Answer

The answer of In saturated fats the fatty acid backbones...

Exam 2: Chemistry of Life

Which carbohydrate, found only in plants, is indigestible by humans?

A peptide bond is found between the amino group of one amino acid and the ____________________ group of a second amino acid.

What fat is the building block for cell membranes?

Each carbon atom can share pairs of electrons with as many as ____ other atoms.

The building block of large carbohydrates is ____.

A phospholipid molecule contains a "head" portion that ____.

A protein combined with cholesterol in the blood is an example of a(n)____.

A tracer is a substance with what attached to it?

The interaction of many separate polypeptide chains determines the ____________________ structure of a protein molecule.

Glycogen, starch and cellulose are examples of ____________________ or complex carbohydrates.

The atomic number denotes the number of ____ in an atom of a particular element.

The sequence of amino acids in a protein represents its ____.

When an atom's outer electron shell is filled, the atom is ____.

Which pesticide can trigger rashes, hives, headaches and asthma?

Radioisotopes ____.

Fats that stay liquid at room temperature are ____.

____________________ determines the order in which amino acids form the primary structure of a protein.

In saturated fats the fatty acid backbones have only a(n)____________________ covalent bond.

Learning About Human Biology

Cells and How They Work

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

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