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Building Blocks of Life- Bio
Building Blocks of Life- Bio
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Chapter 2 Biology quiz over building blocks of life #biomolecules
Flashcards
36 cards
F
Practice quiz
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Host live
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Questions
36
Answers
1
My monomer is a nucleotide. What am I?
Carbohydrate
Nucleic Acid
Protein
Lipid
2
What can denature an enzyme?
water
both high temps and pH changes
pH changes
high temperatures
3
Covalent Bonds:
Split Electrons
Share Electrons
Give/Take Electrons
4
Most enzymes are
fats
hormones
polarity
proteins
5
Proteins are made up of smaller molecules called
amino acids
monosaccharides
proteins
elements
6
On the pH scale, which numbers would be acidic?
Numbers greater than 7
none of the above
Numbers less than 7
7
7
Enzymes are used up in a chemical reaction.
TRUE
FALSE
8
3 of the 4 things listed below are carbon compounds essential to life. Which doesn't belong?
Carbohydrates
Catalysts
Nucleic Acids
Proteins
9
Polymers are made up of
Dimers
Carbon
Sugars
Monomers
10
Plants use adhesion and cohesion
To transport carbon dioxide
To expel waste
To transport water
To create energy
11
Water is able to bond to other types of molecules because of this property
high specific heat
cohesion
adhesion
12
Substances that are produced during a chemical reactions are called:
reactants
products
cute little chicks
enzymes
13
When an atom gains or loses electrons, it becomes a(n)
protein
ion
amino acid
water molecule
14
The ending for enzymes is
ase
ide
ene
ose
15
Water is a polar molecule. Polarity allows water to _______ many substances.
evaporate
destroy
dissolve
weaken
16
Substances that will be changed during chemical reactions (found on left side of chem equations) are called:
products
reactants
catalysts
cell membranes
17
What is cellulose?
A cell found in worms
It provides strength and rigidity to plant cells. It is a carbohydrate
It provides strength and rigidity to human cells
A plant
18
The enzyme catalase breaksdown hydrogen peroxide into H2O & O2. During the reaction, the catalase (hint: liver lab!)
is used up
is changed into a product
is formed into a new enzyme
is unchanged
19
Cell walls in plants are made of a strong polymer called:
chitin
solution
solvent
cellulose
20
What is cohesion?
water molecules binding to certain surfaces
Water molecules bonding to other water molecules
Water molecules bonding to nonpolar molecules
Water molecules bonding to other polar molecules
21
Water has a high specific heat.
False
True
22
Surface tension is a property of water because water molecules bond to other water molecules with
hydrogen bonding
oxygen bonding
biology
enzymes
23
Which of the following are considered to be carbohydrates?
fats & oils
sugars & starches
enzymes
DNA molecules
24
The lock and key model is found in:
fructose
none of the above
enzymes
nucleotides
25
All of the chemical changes that occur within an organism are its:
fatty acids
catalysts
wastes
metabolism
26
A catalyst is able to decrease the amount of ____________ needed for a chemical reaction.
bonding
water
activation energy
compounds
27
Which of the following are nucleic acids?
protons
carbohydrates
DNA & RNA
lipids
28
Lactose = ? and Lactase = ?
enzyme; sugar
catalyzed; polyunsaturated
nucleotide; protein
sugar; enzyme
29
Water is considered to be a polar molecule because it has:
lots of bonds
unequal distribution of charge
no specific shape
30
What is a solvent?
Able to condense a substance
Able to dissolve a substance
31
Catalysts change the ______ at/in which chemical reactions occur.
direction
rate
groups
fats
32
How do buffers work?
releases and takes hydrogens (H) to maintain the pH
changes hydroxides (OH-) to maintain the pH
changes other elements to hydroxides (OH-)
releases and takes carbons (C) to maintain the pH
33
Enzymes are an example of what biomolecule?
Carbohydrates
Lipids
Nucleic acids
Proteins
34
The more H+ ions in a solution, the more _________
Basic
Acidic
Alkaline
Heat
35
The smallest unit of matter is:
an atom
a molecule
a cell
water
36
Water is able to bond to itself because of this property
high specific heat
adhesion
cohesion