The backbone of a DNA molecule is made of which two components?

phosphate molecules and deoxyribose sugars

The fluid mosaic model describes a structure with

polar layers on the outside and nonpolar layer on the inside

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Fall Final Biology Review

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This review covers Scientific Method, Cells, Chemistry, and DNA and Genes

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Questions 20

Answers

1
The backbone of a DNA molecule is made of which two components?
deoxyphosphate molecules and deoxyribose sugars
phosphate molecules and ribose sugars
deoxyphosphate molecules and ribose sugars
phosphate molecules and deoxyribose sugars
2
Carbon compounds that come from living organisms are called ______ compounds.
organic
water
homogeneous
biological
3
Carbon-12, carbon-13, and carbon-14 are
macromolecules
polymers
radioisotopes
isotopes
4
The study of standards for what is right and what is wrong is called
technology
applied science
pure science
ethics
5
Messenger RNA is formed in the process of
mutation
replication
translation
transcription
6
Measurements are examples of data produced by ______ research.
quantitative
observable
descriptive
qualitative
7
A very strong base might have a pH of
9
3
13
5
8
What are the building blocks of proteins?
nucleic acids
peptide bonds
glycerol and fatty acids
amino acids
9
Ribosomes are made of
rRNA and protein
rRNA and mRNA
tRNA and mRNA
protein and tRNA
10
The fluid mosaic model describes a structure with
polar layers on the outside and nonpolar layer on the inside
nonpolar layers on both inside and outside
polar layers on both inside and outside
nonpolar layer on the outside & a polar layer on the inside
11
The various enzymes in our bodies are
proteins
lipids
nucleotides
carbohydrates
12
Water dissolves many ionic and molecular compounds because of its
ionic bonding
hydrogen bonding
covalent bonding
polarity
13
How many electrons can a carbon atom share?
one
two
four
three
14
A plasma membrane is made up of
protein layer
lipid bilayer
enzyme layer
cholesterol layer
15
An RNA molecule is a polymer composed of subunits known as
uracil molecules
ribose molecules
polysaccharides
nucleotides
16
A chloride atom becomes a chloride ion when it
gains an electron
loses an electron
gains a neutron
loses a proton
17
Who concluded that all plants are made of living cells?
Hooke
Schwann
Virchow
Schleiden
18
An unsaturated lipid contains
double bonds
only one fatty acid
more oxygen than hydrogen
ionic bonds
19
Electrons move about the nucleus of an atom in regions called
nuclei
isotopes
air
electron clouds
20
Which of the following organisms do not have cell walls?
animals
bacteria
fungi
plants

Fall Final Biology Review Flashcards | StudBud