BIOL 1201 GREGG UPDATED FINAL EXAM QUESTIONS AND
ANSWERS SURE A+
✔✔What type of bond is joining the two hydrogen atoms? - ✔✔covalent
✔✔A(n) _____ refers to two or more atoms held together by covalent bonds. -
✔✔molecule
✔✔This atom can form up to _____ single covalent bond(s) - ✔✔4
✔✔A(n) _____ bond joins these two oxygen atoms. - ✔✔double covalent
✔✔Part complete
What is the atomic number of an atom that has 6 protons, 6 neutrons, and 6 electrons?
- ✔✔6
✔✔Part complete
Which of these refers to atoms with the same atomic number but different atomic
masses? - ✔✔these atoms are isotopes
✔✔Fluorine's atomic number is 9 and its atomic mass is 19. How many neutrons does
fluorine have? - ✔✔10
✔✔An uncharged atom of boron has an atomic number of 5 and an atomic mass of 11.
How many protons does boron have? - ✔✔5
✔✔A water molecule can bond to up to _____ other water molecules by ____ bonds. -
✔✔4 .... hydrogen
✔✔Part complete
The unequal sharing of electrons within a water molecule makes the water molecule
_____. - ✔✔polar
✔✔The tendency of an atom to pull electrons toward itself is referred to as its _____. -
✔✔electronegativity
✔✔In this molecule, what type of bond is found between the oxygen and hydrogens? -
✔✔polar covalent
✔✔Which of these bonds is weakest? - ✔✔hydrogen bond
✔✔Why isn't this insect drowning? - ✔✔surface tension
, ✔✔What is the pH of an aqueous solution with the hydronium ion concentration[H3O+]
= 2 x 10-14 M ? - ✔✔13.7
✔✔What is the molar concentration of [H3O+] in a cola that has a pH of 3.120? -
✔✔7.59 x 10 ^-4
✔✔Acidic solution: pH < 7
Neutral solution: pH = 7
Basic solution: pH > 7 - ✔✔pH scale
✔✔Which molecules show an appropriate number of bonds around each carbon atom?
- ✔✔
✔✔alcohol - ✔✔is polar and makes compounds more soluble in water (O-H)
✔✔carboxylic acid - ✔✔acts as an acid
✔✔may be a structural isomer of a ketone - ✔✔aldehyde (C=O)
✔✔forms disulfide bonds - ✔✔thiol (S-H)
✔✔amine - ✔✔acts as a base
✔✔organic phosphate - ✔✔contributes negative charge
✔✔L-dopa is used to treat _____. - ✔✔Parkinson's disease
✔✔What kind of effect does R-dopa have on Parkinson's disease? - ✔✔none
✔✔structural isomers - ✔✔differ in the covalent arrangements of their atoms
✔✔cis-trans isomers (geometric isomers) - ✔✔differ in the arrangement of their atoms
about a double bond
✔✔enantiomers - ✔✔isomers that are mirror images of each other
✔✔Glycogen - ✔✔a polysaccharide found in animals
✔✔glucose + glucose —> _____ by _____. - ✔✔maltose + water ... dehydration
synthesis
✔✔dehydration synthesis - ✔✔Condensation reaction where molecules are connected
by loss of a water molecule.
ANSWERS SURE A+
✔✔What type of bond is joining the two hydrogen atoms? - ✔✔covalent
✔✔A(n) _____ refers to two or more atoms held together by covalent bonds. -
✔✔molecule
✔✔This atom can form up to _____ single covalent bond(s) - ✔✔4
✔✔A(n) _____ bond joins these two oxygen atoms. - ✔✔double covalent
✔✔Part complete
What is the atomic number of an atom that has 6 protons, 6 neutrons, and 6 electrons?
- ✔✔6
✔✔Part complete
Which of these refers to atoms with the same atomic number but different atomic
masses? - ✔✔these atoms are isotopes
✔✔Fluorine's atomic number is 9 and its atomic mass is 19. How many neutrons does
fluorine have? - ✔✔10
✔✔An uncharged atom of boron has an atomic number of 5 and an atomic mass of 11.
How many protons does boron have? - ✔✔5
✔✔A water molecule can bond to up to _____ other water molecules by ____ bonds. -
✔✔4 .... hydrogen
✔✔Part complete
The unequal sharing of electrons within a water molecule makes the water molecule
_____. - ✔✔polar
✔✔The tendency of an atom to pull electrons toward itself is referred to as its _____. -
✔✔electronegativity
✔✔In this molecule, what type of bond is found between the oxygen and hydrogens? -
✔✔polar covalent
✔✔Which of these bonds is weakest? - ✔✔hydrogen bond
✔✔Why isn't this insect drowning? - ✔✔surface tension
, ✔✔What is the pH of an aqueous solution with the hydronium ion concentration[H3O+]
= 2 x 10-14 M ? - ✔✔13.7
✔✔What is the molar concentration of [H3O+] in a cola that has a pH of 3.120? -
✔✔7.59 x 10 ^-4
✔✔Acidic solution: pH < 7
Neutral solution: pH = 7
Basic solution: pH > 7 - ✔✔pH scale
✔✔Which molecules show an appropriate number of bonds around each carbon atom?
- ✔✔
✔✔alcohol - ✔✔is polar and makes compounds more soluble in water (O-H)
✔✔carboxylic acid - ✔✔acts as an acid
✔✔may be a structural isomer of a ketone - ✔✔aldehyde (C=O)
✔✔forms disulfide bonds - ✔✔thiol (S-H)
✔✔amine - ✔✔acts as a base
✔✔organic phosphate - ✔✔contributes negative charge
✔✔L-dopa is used to treat _____. - ✔✔Parkinson's disease
✔✔What kind of effect does R-dopa have on Parkinson's disease? - ✔✔none
✔✔structural isomers - ✔✔differ in the covalent arrangements of their atoms
✔✔cis-trans isomers (geometric isomers) - ✔✔differ in the arrangement of their atoms
about a double bond
✔✔enantiomers - ✔✔isomers that are mirror images of each other
✔✔Glycogen - ✔✔a polysaccharide found in animals
✔✔glucose + glucose —> _____ by _____. - ✔✔maltose + water ... dehydration
synthesis
✔✔dehydration synthesis - ✔✔Condensation reaction where molecules are connected
by loss of a water molecule.
