Question 1

Which of the following metabolic activities of plants produces sugars?

Accepted Answer

A)  photosynthesis 
B)  assimilation 
C)  digestion 
D)  respiration 
E)  none of these answers are correct 
A)  photosynthesis 
B)  assimilation 
C)  digestion 
D)  respiration 
E)  none of these answers are correct

Question 2

Two different atoms, each with 7 electrons in their outmost energy shell, may share two pairs of electrons; that is, a double bond is formed between the two atoms.

Accepted Answer

A) True 
 B)False

Question 3

The basic units or subunits of which a protein is composed are _____________.

Accepted Answer

A)  fatty acids 
B)  glycerols 
C)  monosaccharides 
D)  amino acids 
E)  nucleic acids 
A)  fatty acids 
B)  glycerols 
C)  monosaccharides 
D)  amino acids 
E)  nucleic acids

Question 4

Peptide bonds link the building blocks of carbohydrates together.

Accepted Answer

A) True 
 B)False

Question 5

Potential energy can be converted to kinetic energy.

Accepted Answer

A) True 
 B)False

Question 6

Hydrolysis of starch involves the addition of water molecules to the starch molecule.

Accepted Answer

A) True 
 B)False

Question 7

At present the number of elements naturally occurring on earth is __________.

Accepted Answer

A)  less than 90 
B)  93 
C)  98 
D)  104 
E)  more than 105 
A)  less than 90 
B)  93 
C)  98 
D)  104 
E)  more than 105

Question 8

Assimilation is the conversion of raw materials into protoplasm and other cell substances.

Accepted Answer

A) True 
 B)False

Question 9

A base is a compound that releases hydrogen ions when dissolved in water.

Accepted Answer

A) True 
 B)False

Question 10

If a plant is wounded, some cells near the wound site begin dividing and seal off the wound.Once the wound is sealed, the cells stop dividing.The criterion /criteria of life illustrated here is/are

Accepted Answer

A)  response to an external stimulus. 
B)  growth. 
C)  reproduction. 
D)  adaptation to the environment. 
E)  Both [response to the environment and growth] are involved. 
A)  response to an external stimulus. 
B)  growth. 
C)  reproduction. 
D)  adaptation to the environment. 
E)  Both [response to the environment and growth] are involved.

Question 11

Which type of chemical bond involves the transfer of electrons?

Accepted Answer

A)  ionic 
B)  covalent 
C)  hydrogen 
D)  both [ionic and covalent] are correct 
E)  both [ionic and hydrogen] are correct 
A)  ionic 
B)  covalent 
C)  hydrogen 
D)  both [ionic and covalent] are correct 
E)  both [ionic and hydrogen] are correct

Question 12

The element with the lowest atomic number and/or mass is

Accepted Answer

A)  oxygen. 
B)  hydrogen. 
C)  boron. 
D)  nitrogen. 
E)  carbon. 
A)  oxygen. 
B)  hydrogen. 
C)  boron. 
D)  nitrogen. 
E)  carbon.

Question 13

What type of chemical bond joins amino acids together?

Accepted Answer

A)  hydrogen 
B)  glycosidic 
C)  ionic 
D)  peptide 
E)  both [glycosidic and peptide] are correct 
A)  hydrogen 
B)  glycosidic 
C)  ionic 
D)  peptide 
E)  both [glycosidic and peptide] are correct

Question 14

The mass of the protons and neutrons added is the

Accepted Answer

A)  atomic sum. 
B)  atomic number. 
C)  atomic weight. 
D)  atomic charge. 
E)  atomic coefficient. 
A)  atomic sum. 
B)  atomic number. 
C)  atomic weight. 
D)  atomic charge. 
E)  atomic coefficient.

Question 15

All hormones and enzymes are lipids.

Accepted Answer

A) True 
 B)False

Question 16

The number of protons and electrons in a neutral atom is

Accepted Answer

A)  quite variable. 
B)  the same. 
C)  unknown. 
D)  always unequal. 
E)  unrelated. 
A)  quite variable. 
B)  the same. 
C)  unknown. 
D)  always unequal. 
E)  unrelated.

Question 17

Determination of whether something is a living organism or a nonliving object is based on ___________.

Accepted Answer

A)  a single characteristic such as change in position 
B)  presence of carbon and hydrogen atoms 
C)  several characteristics such as DNA and other organic materials inside a cell 
D)  movement 
E)  presence of carbon and oxygen atoms 
A)  a single characteristic such as change in position 
B)  presence of carbon and hydrogen atoms 
C)  several characteristics such as DNA and other organic materials inside a cell 
D)  movement 
E)  presence of carbon and oxygen atoms

Question 18

An ion is neither positively nor negatively charged.

Accepted Answer

A) True 
 B)False

Question 19

The atomic number of an element is based on

Accepted Answer

A)  the number of electrons associated with a single atom. 
B)  the number of neutrons in the nucleus of an atom. 
C)  the number of isotopes associated with it. 
D)  the number of protons present in a single atom. 
E)  its atomic mass. 
A)  the number of electrons associated with a single atom. 
B)  the number of neutrons in the nucleus of an atom. 
C)  the number of isotopes associated with it. 
D)  the number of protons present in a single atom. 
E)  its atomic mass.

Question 20

If a lipid has its fatty acids attached to a glycerol molecule, it is called a wax.

Accepted Answer

A) True 
 B)False

Exam 2: The Nature of Life

Which of the following metabolic activities of plants produces sugars?

Two different atoms, each with 7 electrons in their outmost energy shell, may share two pairs of electrons; that is, a double bond is formed between the two atoms.

The basic units or subunits of which a protein is composed are _____________.

Peptide bonds link the building blocks of carbohydrates together.

Potential energy can be converted to kinetic energy.

Hydrolysis of starch involves the addition of water molecules to the starch molecule.

At present the number of elements naturally occurring on earth is __________.

Assimilation is the conversion of raw materials into protoplasm and other cell substances.

A base is a compound that releases hydrogen ions when dissolved in water.

If a plant is wounded, some cells near the wound site begin dividing and seal off the wound.Once the wound is sealed, the cells stop dividing.The criterion /criteria of life illustrated here is/are

Which type of chemical bond involves the transfer of electrons?

The element with the lowest atomic number and/or mass is

What type of chemical bond joins amino acids together?

The mass of the protons and neutrons added is the

All hormones and enzymes are lipids.

The number of protons and electrons in a neutral atom is

Determination of whether something is a living organism or a nonliving object is based on ___________.

An ion is neither positively nor negatively charged.

The atomic number of an element is based on

If a lipid has its fatty acids attached to a glycerol molecule, it is called a wax.

What Is Plant Biology

Cells

Tissues

Roots and Soils

Stems

Leaves

Flowers, Fruits, and Seeds

Water in Plants

Plant Metabolism

Growth

Meiosis and Alternation of Generation

Genetics

Plant Breeding and Propagation

Evolution

Plant Names and Classification

Domain Kingdombacteria, Domain King-Domarchaea, and Viruses

Kingdom Protista

Kingdom Fungi

Introduction to the Plant Kingdom: Bryophytes

The Seedless Vascular Plants: Ferns and Their Relatives

Introduction to Seed Plants: Gymnosperms

Seed Plants: Angiosperms

Flowering Plants and Civilization

Ecology

Biomes

Filters