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Biology: Carbon, pH, Enzymes and Cell Basics Flashcards | StudBud
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Biology: Carbon, pH, Enzymes and Cell Basics
Biology: Carbon, pH, Enzymes and Cell Basics
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Answers
1
What is the pH scale?
A scale to measure of H+ ions in solution
A scale to measure time
A scale to measure length
A scale to measure temperature
2
Enzymes interact with many different kinds of substrates.
True
False
3
Catalase breaks down hydrogen peroxide in your body to oxygen and water.
True
False
4
Which is not true?
Biology only studies animals.
C, N, O, and H are found within your body
Cells are the smallest unit of living things
We are a carbon based life form.
5
The following can be used as pH indicators except:
Litmus paper
Metal spoon
Universal indicator
Red cabbage solution
6
Prokaryotic cells do not have a
Do not have a cell membrane
role to play in ecosystems.
Cell phone
Membrane bound nucleus
7
If a chemical reactions activation energy is too high it prevents ________________ from forming.
Enzymes
Reactants
Oxygen
Products
8
Enzymes can be inhibited
True
False
9
Allosteric inhibitors block the active site.
True
False
10
Which chemical reaction does
Catalase
catalyze?
Break down of sugar
Break down of proteins
Break down of hydrogen peroxide
Break down of lipids
11
Enzymes change shape permanently after a reaction occurs.
True
False
12
We are a carbon based life.
False
True
13
What are proteins that speed up chemical reactions in the body?
Lipids
Nucleic acids
Carbohydrates
Enzymes
14
Collagen is a protein made up of amino acids.
True
False
15
Hydrogen peroxide is a(n) ___________________ of your body's metabolism.
Reactant
enzyme
fun part
By-product
16
All pH indicators display the same color for the same pH.
True
False
17
What is the ideal pH for amylase?
pH 7
pH 1
pH 14
pH 3
18
Gummy Bears and gelatin are made from animal collagen.
False
True
19
Which chemical reaction does amylase catalyze?
Break down of proteins to amino acids
Break down of glucose to proteins
Break down of lipids to fatty acids
Break down of starch to maltose
20
What do enzymes do to activation energy?
Decrease it
Increase it
Neutralize it
Create it
21
What causes enzymes to denature?
Pressure, temperature, and friction
Water, oxygen, and light
Heat, pH extremes, and chemicals
Movement, gravity, and electricity
22
When making Jello, which should not be added?
Fresh pineapple
Boiled papaya
Canned pineapple
Boiled pineapple
23
Hydrogen Peroxide is toxic.
False
True
24
What is denaturation of an enzyme?
The breaking down of enzymes into smaller units
The irreversible change in an enzyme's shape and function
The activation of an enzyme
The process of enzyme activation
25
Which has a pH close to 5.2?
Your mouth
Your skin's surface
Your blood
Your stomach
26
An enzyme can be reused with a new substrate.
False
True
27
Mixing vinegar and baking soda together results in a chemical reaction that forms
Oxygen bubbles
Helium bubbles
Carbon dioxide bubbles
Soap bubbles
28
Which chemical reaction does
collagenase
catalyze?
Break down of proteins
Break down of collagen
Break down of starch
Break down of lipids
29
Competitive inhibitors bind to the substrates.
False
True
30
Which enzyme works best in a more basic environment?
Lipase
Pepsin
31
The substrate is changed in the catalyzed reaction.
True
False
