Biology intro to chem and scientific method

Question 1

what is the only part of an amino acid to change?

Accepted Answer

r-group

Question 2

cations are

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positive

Question 3

Has more OH- ions

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bases

Question 4

Consists entirely of one type of atom

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element

Question 5

which macromolecule is responsible for keeping animals warm and surrounds our cells?

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lipds

Question 6

H+ ions equals OH- ions

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neutral

Question 7

pH equals 7

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neutral

Question 8

uses adhesion and cohesion and allows water to "climb"

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capillary action

Question 9

enzymes are an example of

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proteins

Question 10

bond formed between a metal and nonmetal

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ionic

Question 11

cell walls of plants are made of which macromolecule?

Accepted Answer

carbohydrates

Question 12

Building blocks (monomers) of carbohydrates

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monosaccharides

Question 13

waxy coating on plants to keep water in is an example of

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lipids

Question 14

DNA and RNA are

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nucleic acids

Question 15

water molecules have little attraction for each other

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false

Question 16

similar substances sticking together

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cohesion

Question 17

What is the range of the pH scale?

Accepted Answer

0-14

Question 18

The variable that the experimenter changes

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independent variable

Question 19

The thing doing the dissolving

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solvent

Question 20

has more H+ ions

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acids

Question 21

formed by the UNEQUAL sharing of electrons and one side is positive and the other is negative

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polar

Question 22

which organic molecule (macromolecule) provides most energy

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carbohydrates

Question 23

Things kept the same across ALL groups in an experiment.

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constants

Question 24

Building blocks (monomers) of nucleic acids

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nucleotides

Question 25

chemicals used to start a reaction

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reactants

Question 26

Water is the universal __________

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solvent

Question 27

bond formed through sharing electrons

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covalent

Question 28

Enzymes consume this

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substrate

Question 29

What is NOT part of a nucleotide?

Accepted Answer

carboxyl group

Question 30

The ultimate effect or outcome because of manipulating the independent variable

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dependent variable

Question 31

reaction that releases heat

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exothermic

Question 32

the bond formed between 2 water molecules

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hydrogen bond

Question 33

which macromolecule is represented by carboxyl group, r group, and amino group

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proteins

Question 34

reaction that absorbs heat

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endothermic

Question 35

Building blocks (monomers) of protein

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amino acids

Question 36

An isotope has a different number of _____

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neutrons

Question 37

monosaccharides are the monomers of

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carbohydrates

Question 38

Where do enzymes and substrate come together?

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Active site

Question 39

amount of energy required to start a reaction

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Activation energy

Question 40

The thing being dissolved

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solute

Question 41

pH less than 7

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acids

Question 42

pH greater than 7

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bases

Question 43

something PHYSICALLY mixed but not chemically combined

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mixture

Question 44

bond most prevalent in living organisms

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covalent

Question 45

These are in the nucleus of an atom

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protons + neutrons

Question 46

The atomic number is the number of these

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protons

Question 47

chemicals produced in a reaction

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products

Question 48

speeds up a reaction

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catalyst

Question 49

These float around the nucleus of an atom

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electrons

Question 50

bond formed through sharing electrons

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covalent

Question 51

bond formed through transfer of electrons

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ionic

Question 52

anions are

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negative

Question 53

different substances sticking together

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adhesion

Question 54

bond formed between a nonmetal and nonmetal

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covalent

Question 55

The group you do nothing to in an experiment. Also known as the "normal" situation.

Accepted Answer

control

Question 56

Building blocks (monomers) of lipids

Accepted Answer

glycerol+fatty acid tails

Biology intro to chem and scientific method

Questions 56

Biology intro to chem and scientific method

Questions 56