Question 1

The structural formula for molecular oxygen is depicted as O=O. What kind of bond holds molecular oxygen together?

Accepted Answer

A) ionic 
B) polar covalent 
C) single covalent 
D) double covalent 
E) triple covalent 
A) ionic 
B) polar covalent 
C) single covalent 
D) double covalent 
E) triple covalent

Question 2

Tracers are used in what form of medical test?

Accepted Answer

A) PET scans 
B) CT scans 
C) sonograms 
D) x-rays 
E) MRI 
A) PET scans 
B) CT scans 
C) sonograms 
D) x-rays 
E) MRI

Question 3

Match between columns
                        Premises: amino acid

Accepted Answer

The Answer of C and B and F and D is...

Question 4

In a polymer of nucleotides, how does one nucleotide attach to another?

Accepted Answer

A) The base of one nucleotide is attached to the base of the next. 
B) The base of one nucleotide it attached to the sugar of the next. 
C) The sugar of one nucleotide is attached to the sugar of the next. 
D) The phosphate group of one nucleotide is attached to the base of the next. 
E) The phosphate group of one nucleotide is attached to the sugar of the next. 
A) The base of one nucleotide is attached to the base of the next. 
B) The base of one nucleotide it attached to the sugar of the next. 
C) The sugar of one nucleotide is attached to the sugar of the next. 
D) The phosphate group of one nucleotide is attached to the base of the next. 
E) The phosphate group of one nucleotide is attached to the sugar of the next.

Question 5

A pH value of ____ has the highest concentration of hydrogen ions.

Accepted Answer

A) 1 
B) ​3 
C) ​5 
D) ​7 
E) ​9 
A) 1 
B) ​3 
C) ​5 
D) ​7 
E) ​9

Question 6

Match between columns
                        Premises: steroid

Accepted Answer

The Answer of E and G and D and B is...

Question 7

Which type of chemical bonds are found within a water molecule?

Accepted Answer

A) hydrogen 
B) ionic 
C) polar covalent 
D) nonpolar covalent 
E) triple 
A) hydrogen 
B) ionic 
C) polar covalent 
D) nonpolar covalent 
E) triple

Question 8

Which two atoms are found in all organic compounds?

Accepted Answer

A) carbon and hydrogen 
B) carbon and oxygen 
C) oxygen and hydrogen 
D) carbon and phosphorous 
E) oxygen and sulfur 
A) carbon and hydrogen 
B) carbon and oxygen 
C) oxygen and hydrogen 
D) carbon and phosphorous 
E) oxygen and sulfur

Question 9

The positively charged ion, potassium, and the negatively charged ion, fluoride, will form what kind of bond?

Accepted Answer

A) ionic 
B) polar covalent 
C) nonpolar covalent 
D) hydrogen 
E) isotonic 
A) ionic 
B) polar covalent 
C) nonpolar covalent 
D) hydrogen 
E) isotonic

Question 10

Which type of bonds hold the two chains of DNA together in a DNA molecule?

Accepted Answer

A) hydrogen 
B) polar covalent 
C) nonpolar covalent 
D) ionic 
E) peptide 
A) hydrogen 
B) polar covalent 
C) nonpolar covalent 
D) ionic 
E) peptide

Question 11

Hydrogenation is a _____.

Accepted Answer

A) manufacturing process that adds hydrogen atoms to carbohydrates 
B) natural process that that adds hydrogen atoms to carbohydrates 
C) manufacturing process that adds hydrogen atoms to oils 
D) natural process that removes hydrogen atoms from fats 
E) manufacturing process that removes hydrogen atoms from fats 
A) manufacturing process that adds hydrogen atoms to carbohydrates 
B) natural process that that adds hydrogen atoms to carbohydrates 
C) manufacturing process that adds hydrogen atoms to oils 
D) natural process that removes hydrogen atoms from fats 
E) manufacturing process that removes hydrogen atoms from fats

Question 12

Which invention led to trans fats being marketed as a solid cooking fat?

Accepted Answer

A) the electric light 
B) the telephone 
C) the automobile 
D) the microwave oven 
E) the refrigerator 
A) the electric light 
B) the telephone 
C) the automobile 
D) the microwave oven 
E) the refrigerator

Question 13

A solution at a pH of 10 contains how many times more hydrogen ions than a solution at a pH of 7?

Accepted Answer

A) ​2 
B) ​3 
C) ​10 
D) ​100 
E) ​1,000 
A) ​2 
B) ​3 
C) ​10 
D) ​100 
E) ​1,000

Question 14

____ is one of the substances that maintains our blood pH between 7.35 and 7.45.

Accepted Answer

A) Water 
B) Carbonic acid 
C) Hydrochloric acid 
D) Hydrogen peroxide 
E) Sodium hydroxide 
A) Water 
B) Carbonic acid 
C) Hydrochloric acid 
D) Hydrogen peroxide 
E) Sodium hydroxide

Question 15

A solution is a uniform mixture in which a ____ is dissolved completely in a ____.

Accepted Answer

A) salt; solute 
B) solute; salt 
C) solute; solvent 
D) solvent; salt 
E) solvent; solute 
A) salt; solute 
B) solute; salt 
C) solute; solvent 
D) solvent; salt 
E) solvent; solute

Question 16

Which is an organic molecule?

Accepted Answer

A) carbon dioxide (CO2)​ 
B) water (H2O) 
C) methane (CH4) 
D) hydrochloric acid (HCl) 
E) oxygen (O2) 
A) carbon dioxide (CO2)​ 
B) water (H2O) 
C) methane (CH4) 
D) hydrochloric acid (HCl) 
E) oxygen (O2)

Question 17

Match between columns
                        Premises: the bond between the atoms in an NaCl molecule

Accepted Answer

The Answer of covalent and ionic and hydrogen is...

Question 18

Match between columns
                        Premises: the bond between the hydrogen atoms of molecular hydrogen

Accepted Answer

The Answer of ionic and hydrogen and covalent is...

Question 19

Helium, neon and argon are _____.

Accepted Answer

A) extremely stable because they have vacancies in their outer shells 
B) extremely stable because they don't have any vacancies in their outer shells 
C) extremely unstable because they have vacancies in their outer shells 
D) extremely unstable because they don't have any vacancies in their outer shells 
E) extremely unstable because they have vacancies in their inner shells 
A) extremely stable because they have vacancies in their outer shells 
B) extremely stable because they don't have any vacancies in their outer shells 
C) extremely unstable because they have vacancies in their outer shells 
D) extremely unstable because they don't have any vacancies in their outer shells 
E) extremely unstable because they have vacancies in their inner shells

Question 20

The neutral subatomic particle is the ____.

Accepted Answer

A) neutron 
B) proton 
C) electron 
D) quark 
E) Higg's boson 
A) neutron 
B) proton 
C) electron 
D) quark 
E) Higg's boson

Exam 2: Molecules of Life

The structural formula for molecular oxygen is depicted as O=O. What kind of bond holds molecular oxygen together?

Tracers are used in what form of medical test?

In a polymer of nucleotides, how does one nucleotide attach to another?

A pH value of ____ has the highest concentration of hydrogen ions.

Which type of chemical bonds are found within a water molecule?

Which two atoms are found in all organic compounds?

The positively charged ion, potassium, and the negatively charged ion, fluoride, will form what kind of bond?

Which type of bonds hold the two chains of DNA together in a DNA molecule?

Hydrogenation is a _____.

Which invention led to trans fats being marketed as a solid cooking fat?

A solution at a pH of 10 contains how many times more hydrogen ions than a solution at a pH of 7?

____ is one of the substances that maintains our blood pH between 7.35 and 7.45.

A solution is a uniform mixture in which a ____ is dissolved completely in a ____.

Which is an organic molecule?

Helium, neon and argon are _____.

The neutral subatomic particle is the ____.

Invitation to Biology

Cell Structure

Energy and Metabolism

Capturing and Releasing Energy

Dna Structure and Function

Gene Expression and Control

How Cells Reproduce

Patterns of Inheritance

Biotechnology

Evidence of Evolution

Processes of Evolution

Early Life Forms and the Viruses

Plants and Fungi

Animal Evolution

Population Ecology

Communities and Ecosystems

The Biosphere and Human Effects

Animal Tissues and Organs

How Animals Move

Circulation and Respiration

Immunity

Digestion and Excretion

Neural Control and the Senses

Endocrine Control

Reproduction and Development

Plant Form and Function

Plant Reproduction and Development

Filters

A solution is a uniform mixture in which a is dissolved completely in a .