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