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Biology Test 1 Review - 2019 Flashcards | StudBud
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Biology Test 1 Review - 2019
Biology Test 1 Review - 2019
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Covers: Scientific Method, Characteristics of Life, Macromolecules, Enzymes & Catalysts
Flashcards
27 cards
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Practice quiz
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Questions
27
Answers
1
What process uses chemical reactions in an organism to build up or break down materials?
metabolism
homeostasis
evolution
reproduction
2
Which reaction requires less energy to get started?
Uncatalyzed
Catalyzed
3
What is a catalyst?
A chemical reaction that absorbs energy
A substance that decreases activation energy of a reaction
A specific reactant that an enzyme acts on
A chemical reaction that releases energy
4
The amount of energy needed to begin a chemical reaction is what?
enzyme
activation energy
lactose
catalyst
5
You touch a hot stove and quickly pull your hand away. This is an example of:
Response to Stimuli (Environment)
Evolve
Growth and Development
Energy
6
What is the name of the monomers that join together to create a protein?
fatty acids
amino acid
carboxyl groups
nucleotides
7
Which of the following statements about lipids is FALSE?
Olive oil is an unsaturated fat
Lipids are made up or carbon and hydrogen
Unsaturated fats are solid at room temperature
Saturated fats have all possible hydrogen bonds
8
What are substances with a pH equal to 7?
Neutral
Bases
Acids
9
Ice floats because it is more dense than liquid water.
True
False
10
Which macromolecule provides the body with energy?
proteins
nucleic acids
carbohydrates
lipids
11
True or False: Carbohydrates store and transit genetic information.
False
True
12
How many independent variables should you test in an experiment?
As many as humanly possible!
0
2
1
13
An individual organism can evolve over one lifetime.
False
True
14
You can have more than 1 control variable in an experiment.
False
True
15
Enzymes are important in the body because they...
slow down reactions
absorb energy
speed up reactions
release energy
16
What does a catalyst do to the activation energy of a chemical reaction?
decreases
doesn't affect it
speeds it up
increases
17
Which macromolecule stores energy, provides a waterproof covering, and insulation?
lipids
nucleic acids
proteins
carbohydrates
18
Water moves against gravity in capillary tubes (or a tree) because of...
adhesion
expansion after freezing
cohesion
resistance to temperature changes
19
What make up nucleic acids?
monosaccharides
fatty acids
amino acids
nucleotides
20
What substances have a pH lower than 7 and usually taste sour?
Acids
Bases
Neutral
21
What substances have a pH greater than 7 and usually taste bitter?
Bases
Neutral
Acids
22
What does temperature change do to an enzyme?
It changes the shape of the substrate
It kills the enzyme
It changes the shape of the active site
It does nothing to the enzyme
23
The process of keeping internal conditions stable is called:
metabolism
evolution
stimulus
homeostasis
24
What is the chemical composition of proteins?
Carbon, Hydrogen, Oxygen, & Nitrogen
Carbon, Oxygen, & Nitrogen
Carbon, Hydrogen, & Oxygen
Carbon, Hydrogen, Oxygen, Nitrogen, & Phosphorus
25
Which is NOT a characteristic of life?
Genetic Code
Reproduce
Breathing
Homeostasis
26
The surface tension of water, allowing insects to walk on it, is caused by....
adhesion
resistance to temperature changes
expansion after freezing
cohesion
27
Which of the following is an example of a monosaccharide?
fruit and vetegables
meat and fish
yogurt and milk
bread and potatoes
