BIOLOGY 1201 EXAM 1 (GREGG)
QUESTIONS & ACCURATE
UPGRADED ANSWERS
The innermost electron shell of an atom can hold up to _____ electrons. - Correct
Answer ✔✔ 2
Which of these relationships is true of an uncharged atom? - Correct Answer ✔✔ The
number of protons is equal to the number of electrons.
What determines the types of chemical reactions that an atom participates in? - Correct
Answer ✔✔ the number of electrons in the outermost electron shell (stable)
What is the atomic number of an atom that has 6 protons, 6 neutrons, and 6 electrons?
- Correct Answer ✔✔ 6
Which of these refers to atoms with the same atomic number but different atomic
masses? - Correct Answer ✔✔ they are isotopes
Fluorine's atomic number is 9 and its atomic mass is 19. How many neutrons does
fluorine have? - Correct Answer ✔✔ 10 neutrons
An uncharged atom of boron has an atomic number of 5 and an atomic mass of 11.
How many protons does boron have? - Correct Answer ✔✔ 5 protons
what is atomic mass? - Correct Answer ✔✔ the number of protons plus the number of
neutrons
What type of bond is joining the two hydrogen atoms? - Correct Answer ✔✔ covalent
A(n) _____ refers to two or more atoms held together by covalent bonds. - Correct
Answer ✔✔ molecule
This atom can form up to _____ single covalent bond(s). - Correct Answer ✔✔ four
A(n) _____ bond joins these two oxygen atoms. - Correct Answer ✔✔ double covalent
What is the pH of an aqueous solution with the hydronium ion concentration [H3O+] = 2
x 10-14 M ? - Correct Answer ✔✔ -log(2 x 10^-14) = 13.7
What is the molar concentration of [H3O+] in a cola that has a pH of 3.120? - Correct
Answer ✔✔ 10^-3.120 = 7.59 x 10^-4
, A water molecule can bond to up to _____ other water molecules by ____ bonds. -
Correct Answer ✔✔ four...hydrogen
The unequal sharing of electrons within a water molecule makes the water molecule
_____. - Correct Answer ✔✔ polar
The tendency of an atom to pull electrons toward itself is referred to as its _____. -
Correct Answer ✔✔ electronegativity
In this molecule, what type of bond is found between the oxygen and hydrogens? -
Correct Answer ✔✔ polar covalent
L-dopa is used to treat _____. - Correct Answer ✔✔ Parkinson's disease
Enantiomers are molecules that _____. - Correct Answer ✔✔ are mirror images
Cis-trans isomers (geometric isomers) are molecules that _____. - Correct Answer ✔✔
differ in the arrangement of their atoms about a double bond
What is another name for a condensation reaction? - Correct Answer ✔✔ dehydration
What is the name of the process during which a bond between two monomers is
broken? - Correct Answer ✔✔ hydrolysis
Protein polymers are made up of _________ monomers. - Correct Answer ✔✔ amino
acid
Carbohydrate polymers are made up of ___________ monomers. - Correct Answer ✔✔
simple sugar
Nucleic acid polymers are made up of __________ monomers. - Correct Answer ✔✔
nucleotide
Glycogen is _____. - Correct Answer ✔✔ a polysaccharide found in animals
glucose + glucose —> _____ by _____. - Correct Answer ✔✔ maltose + water ...
dehydration synthesis
Which of these is a source of lactose? - Correct Answer ✔✔ milk
Which of these is a polysaccharide? - Correct Answer ✔✔ cellulose
_____ is the most abundant organic compound on Earth - Correct Answer ✔✔ cellulose
QUESTIONS & ACCURATE
UPGRADED ANSWERS
The innermost electron shell of an atom can hold up to _____ electrons. - Correct
Answer ✔✔ 2
Which of these relationships is true of an uncharged atom? - Correct Answer ✔✔ The
number of protons is equal to the number of electrons.
What determines the types of chemical reactions that an atom participates in? - Correct
Answer ✔✔ the number of electrons in the outermost electron shell (stable)
What is the atomic number of an atom that has 6 protons, 6 neutrons, and 6 electrons?
- Correct Answer ✔✔ 6
Which of these refers to atoms with the same atomic number but different atomic
masses? - Correct Answer ✔✔ they are isotopes
Fluorine's atomic number is 9 and its atomic mass is 19. How many neutrons does
fluorine have? - Correct Answer ✔✔ 10 neutrons
An uncharged atom of boron has an atomic number of 5 and an atomic mass of 11.
How many protons does boron have? - Correct Answer ✔✔ 5 protons
what is atomic mass? - Correct Answer ✔✔ the number of protons plus the number of
neutrons
What type of bond is joining the two hydrogen atoms? - Correct Answer ✔✔ covalent
A(n) _____ refers to two or more atoms held together by covalent bonds. - Correct
Answer ✔✔ molecule
This atom can form up to _____ single covalent bond(s). - Correct Answer ✔✔ four
A(n) _____ bond joins these two oxygen atoms. - Correct Answer ✔✔ double covalent
What is the pH of an aqueous solution with the hydronium ion concentration [H3O+] = 2
x 10-14 M ? - Correct Answer ✔✔ -log(2 x 10^-14) = 13.7
What is the molar concentration of [H3O+] in a cola that has a pH of 3.120? - Correct
Answer ✔✔ 10^-3.120 = 7.59 x 10^-4
, A water molecule can bond to up to _____ other water molecules by ____ bonds. -
Correct Answer ✔✔ four...hydrogen
The unequal sharing of electrons within a water molecule makes the water molecule
_____. - Correct Answer ✔✔ polar
The tendency of an atom to pull electrons toward itself is referred to as its _____. -
Correct Answer ✔✔ electronegativity
In this molecule, what type of bond is found between the oxygen and hydrogens? -
Correct Answer ✔✔ polar covalent
L-dopa is used to treat _____. - Correct Answer ✔✔ Parkinson's disease
Enantiomers are molecules that _____. - Correct Answer ✔✔ are mirror images
Cis-trans isomers (geometric isomers) are molecules that _____. - Correct Answer ✔✔
differ in the arrangement of their atoms about a double bond
What is another name for a condensation reaction? - Correct Answer ✔✔ dehydration
What is the name of the process during which a bond between two monomers is
broken? - Correct Answer ✔✔ hydrolysis
Protein polymers are made up of _________ monomers. - Correct Answer ✔✔ amino
acid
Carbohydrate polymers are made up of ___________ monomers. - Correct Answer ✔✔
simple sugar
Nucleic acid polymers are made up of __________ monomers. - Correct Answer ✔✔
nucleotide
Glycogen is _____. - Correct Answer ✔✔ a polysaccharide found in animals
glucose + glucose —> _____ by _____. - Correct Answer ✔✔ maltose + water ...
dehydration synthesis
Which of these is a source of lactose? - Correct Answer ✔✔ milk
Which of these is a polysaccharide? - Correct Answer ✔✔ cellulose
_____ is the most abundant organic compound on Earth - Correct Answer ✔✔ cellulose
