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BIO Exam 2A 2015
Test Description: Atoms to molecules
Instructions: Answer all questions to get your test result.
1) which of the following are functions of nucleic acids?
A
they contain sulfur
B
contain instructions for making proteins
C
combine to form proteins
D
they are made of lipids
2) types of lipids include
A
amino acids
B
triglycerides
C
nucleotides
D
polysaccharides
3) characteristics of DNA include
A
all of the other answers are correct
B
made of sugar, phosphate, and a carbon base
C
passing traits from one generation to the next
D
made of a single strand that winds to form a double helix
4) differences between RNA and DNA include
A
RNA is single stranded
B
all of the rest are correct
C
Thymine in DNA, Uracil in RNA
D
DNA is double stranded
5) a __________ cannot be broken down into other types of subsances
A
molecule
B
element
C
compound
D
metal
6) functions of proteins include
A
all of the rest are correct
B
speeding up reactions
C
transporting materials
D
providing shape to cells
7) the main difference between saturated and unsaturated fatty acids is
A
saturated fatty acids are liquids
B
the number of hydrogen atoms bonded to the carbon atoms
C
the amount of energy they contain
D
the presence or absence of an acid group
8) complex carbohydrates are made of subunits called
A
nucleotides
B
monosaccharides
C
amino acids
D
starch
9) proteins are made of subunits called
A
monosaccharides
B
nucleotides
C
amino acids
D
carbohydrates
10) nucleic acids are made of subunits called
A
simple sugars
B
nucleotides
C
DNA
D
amino acids
11) the main element in organic compounds is _____
A
oxygen
B
hydrogen
C
sodium
D
carbon
12) there are about ____ amino acids found in living things
A
120
B
55
C
20
D
4
13) chemical bonds in which one atom takes an electron from another are
A
hydrogen
B
metallic
C
covalent
D
ionic
14) matter is anything that takes up space and has
A
mass
B
shape
C
chemistry
D
energy
15) a bond in which atoms share electrons is
A
metallic
B
covalent
C
hydrogen
D
ionic
*select an answer for all questions
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