3420747
Frage 1
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What kind of bonds do water molecules form?
Antworten
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hydrogen bonds
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covalent bonds
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ionic bonds
Frage 2
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Chemical reactions do not create or destroy matter; they REARRANGE it.
Antworten
- True
- False
Frage 3
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What is cohesion?
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tendency of molecules of the same kind to stick together
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clinging of one substance to another
Frage 4
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What is adhesion?
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tendency of molecules of the same kind to stick together
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clinging of one substance to another
Frage 5
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Because of waters hydrogen bonds, water has...
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has a stronger resistance to temperature change
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cohesion
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adhesion
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easier to heat up
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slower to evaporate
Frage 6
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What is a solvent?
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the dissolving agent?
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the substance that is dissolved?
Frage 7
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What is the solute?
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the dissolving agent?
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substance that is dissolved?
Frage 8
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What are the most common elements in the body?
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Sulfur
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Hydrogen
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Calcium
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Lead
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Phosphorus
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Oxygen
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Magnesium
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Nitrogen
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Carbon
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Silicon
Frage 9
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Bonds within a molecule are called?
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intramolecular bonds
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intermolecular bonds
Frage 10
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Bonds between molecules are called?
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intermolecular bonds
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intramolecular bonds
Frage 11
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What are ionic bonds?
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the sharing of electrons
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electron exchange
Frage 12
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What are covalent bonds?
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share electrons
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electron exchange
Frage 13
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An acid is a substance that donates [blank_start]hydrogen ions[blank_end] to a solution (exp. hydrochloric acid)
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hydrogen ions
Frage 14
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A base is a substance that reduces the [blank_start]hydrogen ion[blank_end] concentration of a solution by adding [blank_start]OH-[blank_end] molecules.
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hydrogen ion
Frage 15
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ph scale stands for: [blank_start]potential of hydrogen[blank_end]
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potential of hydrogen
Frage 16
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[blank_start]Hydrolysis[blank_end] is used to break polymer bonds
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Hydrolysis
Frage 17
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What are monomers for carbohydrates?
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monosaccharides
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glycerol
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amino acids
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nucleotides
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fatty acids
Frage 18
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Carbohydrates are made of [blank_start]monosaccharides[blank_end] which make [blank_start]disaccharides[blank_end] which make [blank_start]polysaccharides[blank_end] using [blank_start]dehydration synthesis[blank_end].
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monosaccharides
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disaccharides
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polysaccharides
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dehydration synthesis
Frage 19
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Monomers are linked together form polymers by [blank_start]dehydration synthesis[blank_end], a reaction that removes a molecule of [blank_start]water[blank_end].
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dehydration synthesis
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water
Frage 20
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Glucose is a...
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polysaccharide
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monosaccharide
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disaccharide
Frage 21
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To form a disaccharide, one monomer gives up a [blank_start]hydroxyl[blank_end] group and the other one gives up a [blank_start]hydrogen[blank_end] atom.
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hydrogen
Frage 22
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to make an amino acid what else is necessary?
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carboxyl
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amino group
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r group
-
fatty acid
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nucleotide
Frage 23
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What is necessary to form a nucleotide in DNA?
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deoxyribose (5 carbon sugar)
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ribose (5 carbon sugar)
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phosphate group
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carboxyl group
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nitrogen base
Frage 24
Antworten
- True
- False
Frage 25
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The functions of lipids are...?
Antworten
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Insulation of the body
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Quick Energy
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Genetic Material
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Support and protection of vital organs
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Long term energy storage
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Immune System
Frage 26
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The function of nucleic acids are...?
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The energy coin (ATP)
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Insulation of the body
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Structure
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Genetic material
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Protect vital organs
Frage 27
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Lipids are made of...
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amino acids
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glycerol
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nucleotides
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fatty acids
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monosaccharides
Frage 28
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Starch is found in plants and serves as a glucose bank. The plant can withdraw glucose for energy or building materials.
Antworten
- True
- False
Frage 29
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Chitin is a structural [blank_start]polysaccharide[blank_end] used by insects and crustaceans to build their exoskeletons. It is also found in the [blank_start]cell walls[blank_end] of fungi.
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polysaccharide
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cell walls
Frage 30
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[blank_start]Cellulose[blank_end] is the most abundant compound. Component of the tough cell walls that enclose plant cells.
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Cellulose
Frage 31
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Another name for a fat is triglyceride.
Antworten
- True
- False
Frage 32
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Which ones are the reactants?
HCI +NaOH=NaCl +H20
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NaCl +H2O
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NaCl + HCI
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HCI + NaOH
Frage 33
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What cells store fats?
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Muscle
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Immune
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Red Blood Cells
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Adipose
Frage 34
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In a phospholipid: the heads are [blank_start]hydrophilic[blank_end], and the tails are [blank_start]hydrophobic[blank_end].
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hydrophobic
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hydrophilic
Frage 35
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Disaccharides are used for...
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quick energy
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transfer
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energy storage
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structure
Frage 36
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To test for glucose you would use...
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Iodine
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Buirets
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Benedicts
Frage 37
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To test for starch you would use...
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Iodine
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Buirets
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Benedicts
Frage 38
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The two DNA strands are held together by ionic bonds.
Antworten
- True
- False
Frage 39
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Functions of protein include...
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structure
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enzymes
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transportation
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immune system
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chemical messengers
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receptors
Frage 40
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Polypeptides are made of..
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covalent peptide bonds
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ionic peptide bonds
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hydrogen peptide bonds
Frage 41
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[blank_start]Globular[blank_end] proteins are usually enzymes. [blank_start]Fibrous[blank_end] protein are usually hair, tendons, etc.
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Fibrous
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Globular
Frage 42
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Shape determines [blank_start]function[blank_end] of a macromolecule
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function
Frage 43
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To test for protein you use...
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Biurets
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Benedicts
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Iodine
Frage 44
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In DNA: [blank_start]Adenine[blank_end] forms 2 bonds with [blank_start]Thymine[blank_end] and [blank_start]Guanine[blank_end] and [blank_start]Cytosine[blank_end] form 3 bonds with each other.
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Adenine
Frage 45
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[blank_start]Denaturation[blank_end] is when the R-Group interactions are "broken". Causing a protein to lose its ability to function.
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Denaturation
Frage 46
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Causes for denaturation...
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salinity
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high temp
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freezing
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change in pH
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