stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
Exploring Life Unit Review Flashcards | StudBud
Explore
/
Exploring Life Unit Review
Exploring Life Unit Review
32 terms
·
StudBud Administration
·
188 plays
Contains questions about the scientific process, theory vs law, biochemistry, and earth Earth.
Flashcards
32 cards
F
Practice quiz
P
Host live
L
Questions
32
Answers
1
This is defined as a well tested hypothesis that attempts to explain WHY something occurs in the natural world.
experiment
law
prediction
theory
2
The difference between a Law and a Theory is...?
Laws change over time
Law explains "how"
Law explains "why"
Theories never change
3
When Earth first formed, organic compounds were very abundant.
False
True
4
Lipids do no mix well with water. What word describes this characteristic?
lipidphobic
hydrophilic
aquaphilic
hydrophobic
5
This orgainic compound will be unable to function if is surrounding pH becomes too low or too high.
nucleic acids
proteins
lipids
carbohydrates
6
The following is NOT a function of lipids.
to protect vital organs
to make steroids
to provide short-term energy
to create cell membranes
7
One function of this macromolecule is to provide short-term energy to organisms.
nucleic acids
proteins
carbohydrates
lipids
8
The conditions on early Earth did NOT include which of the following?
large amounts of atmospheric water vapor
high amounts of atmospheric oxygen
atmosphere made of volcanic-like gases
very hot temperatures
9
What is the function of a nucleic acid?
to provide energy
to build steroids
to store and transmit genetic information
to build enzymes
10
Current conditions on Earth still allow for the formation of new organic compounds.
True
False
11
This organic compound is composed only of carbon, hydrogen, oxygen, and nitrogen atoms.
carbohydrate
lipid
protein
nucleic acid
12
What is the difference between the 20 different types of amino acids?
the number of double bonds
the amount of carbon
the number of oxygen atoms
the side group attached to the central carbon atom
13
What is the monomer of carbohydrates?
glycerol and fatty acids
nucleotide
amino acid
monosaccharide
14
Which of the following allowed for chemical reactions that created organic compounds to occur?
lightning
all 3 answers are correct
UV radiation
no atmospheric oxygen
15
Plants require this carbohydrate for structural support.
cellulose
chitin
starch
glycogen
16
Glucose can be described as a(n)...
amino acid
polysaccharide
polypeptide
monosaccharide
17
What does the RNA World Hypothesis state?
organic compounds formed from deep sea vents
RNA and DNA formed together and began self-replicating
DNA first developed from amino acids on the planet
RNA can catalyze chemical reactions that create more RNA
18
These protein molecules lower the activation energy needed to start a chemical reaction.
hormones
enzymes
steroids
amino acids
19
When Earth formed 4.6 billion years ago, it did not have a protective atmosphere.
False
True
20
These are tiny bubbles filled with organic compounds that will burst to make more bubbles.
microspheres
vesicles
macrospheres
cells
21
Earth's protective ozone layer was created as the amount of oxygen in the atmosphere increased.
True
False
22
The following molecule is considered to be a polymer.
glycerol + fatty acid
polypeptide
monosaccharide
nucleotide
23
Which of the following is a pseudoscience?
astronomy
philosophy
physiology
zoology
24
Which of the following elements is NOT found in a Lipid molecule?
carbon
hydrogen
oxygen
nitrogen
25
Which of the following organic compounds forms a ring structure in water?
protein
carbohydrate
nucleic acid
lipid
26
One theory for the formation of organic compounds was that meteroites carrying amino acids crashed into Earth.
True
False
27
What element is the main building block for organic compounds?
oxygen
nitrogen
carbon
hydrogen
28
Which of the following was NOT found in large amounts in early Earth's atmosphere?
water vapor
nitrogen
oxygen
carbon dioxide
29
Which organic molecules are believed to be the first ones formed on Earth?
glycerol + fatty acids
amino acids, nucelotides
polysaccharides
monosaccharides
30
Which of the following branches of science does NOT involve the study of living things?
physics
biochemistry
ecology
botany
31
Testable or non-testable? "Should the use of coal and other fossil fuels be banned"?
Non-testable
Testable
32
Which organic compound has a glycerol head attached to a tail made of carbon and hydrogen atoms?
protein
carbohydrate
lipid
nucleic acid
