Questão 1
Questão
What is atomic mass?
Responda
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The number of protons in the nucleus
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the number of protons and neutrons in the nucleus
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the number of protons, neutrons, and electrons
Questão 2
Questão
What does the atomic number mean?
Responda
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The number of electrons the atom has
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The number of protons the atom has
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the number of neutrons the atom has
Questão 3
Questão
Which shows correct Lewis dot structure?
Questão 4
Questão
What is the order of chemical bonding from strongest to weakest?
Responda
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ionic, van der waals, hydrogen, covalent
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van der waals, hydrogen, ionic, covalent
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hydrogen, ionic, van der waals, covalent
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covalent, ionic, hydrogen, van der waals
Questão 5
Questão
Water is a [blank_start]polar[blank_end] molecule. When water molecules stick together, it is called [blank_start]cohesion[blank_end]. When water molecules stick to other objects it is called [blank_start]adhesion[blank_end]. Capillary action is when water is soaked up in a plant through [blank_start]adhesion[blank_end] and [blank_start]cohesion[blank_end] working together. (hint for last part: alphabetical order)
Responda
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polar
-
cohesion
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adhesion
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adhesion
-
cohesion
Questão 6
Questão
Hydrophilic means __________________
Hydrophobic means _______________
Responda
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water "loving" (dissolved in water), "hating" water (repels, wants to get away from water)
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"hating" water (repels, wants to get away from water), water "loving" (dissolved in water)
Questão 7
Questão
When water molecules at the top of water cohere together to avoid outside molecules, it is called [blank_start]surface tension[blank_end].
Questão 8
Questão
What are the four essential organic compounds for life?
Responda
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Carbohydrates
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Proteins
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Nucleic Acids
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Water
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Lipids
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Alcohol
Questão 9
Questão
Carbohydrates create [blank_start]sugars[blank_end] for energy. Lipids store [blank_start]energy[blank_end] with fats. Proteins are important for the [blank_start]structure[blank_end] of cells. Nucleic acids contain the [blank_start]genetic[blank_end] code for cells.
Responda
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sugars
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energy
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structure
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genetic
Questão 10
Questão
What is the difference between phospholipids and triglycerides?
Responda
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Phospolipids have a phosphorus "head" and 2 tails of fatty acids
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Triglycerides have 3 tails of fatty acids
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Triglycerides store fat
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Phospholipids create the cell membrane
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All of the above
Questão 11
Questão
Deoxyribonucleic acid and ribonucleic acid are two types of nucleic acids
Questão 12
Questão
Enzymes are biological [blank_start]catalysts[blank_end], which help to speed up metabolic reactions. Enzymes [blank_start]denature[blank_end] (lose characteristics) when the conditions are not right.
Questão 13
Questão
Enzymes will denature based off changes in
Responda
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Temperature
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Time
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Brightness
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Salinity
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pH
Questão 14
Questão
Enzymes have [blank_start]active[blank_end] sites. In these sites, [blank_start]substrates[blank_end] fit in and cause chemical reactions to occur. The speed of reaction can depend on the presence of [blank_start]inhibitors[blank_end].
Responda
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active
-
substrates
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inhibitors
Questão 15
Questão
Levels of protein structure:
Primary - [blank_start]amino[blank_end] acid sequence
Secondary - [blank_start]hydrogen[blank_end] bonds in peptide chain form alpha-[blank_start]helix[blank_end] and beta sheets.
Tertiary - non-[blank_start]covalent[blank_end] interactions between [blank_start]variable[blank_end] group within protein
Quaternary - interaction between [blank_start]two[blank_end] polypeptide chains
Responda
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helix
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amino
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hydrogen
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covalent
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variable
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two
Questão 16
Questão
What two saccharides create lactose?
Responda
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glucose+glucose
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amino acid+galactose
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water+sucrose
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glucose+galactose
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maltose+sucrose
Questão 17
Questão
[blank_start]Waxes[blank_end] are lipids that [blank_start]waterproof[blank_end] plants.
Questão 18
Questão
Acids have less H+ ions and bases have more H+ ions
Questão 19
Questão
Whats the difference between dehydration synthesis and hydrolysis?
Responda
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dehydration synthesis creates new polymers
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hydrolysis involves taking away a water molecule
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dehydration synthesis involves taking away a water molecule
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hydrolysis breaks down polymers
Questão 20
Questão
the pH scale is measured from 0-20