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Biology 1101 > Biology 1101 Exam 1 > Flashcards

Biology 1101 Exam 1 Flashcards

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1
Q

Becky notices that every animal that can fly has wings, Becky guesses that wings must be necessary for flight and predicts that any flying animal that is discovered will have wings. Becky’s guess is called a ___, which is based on her ____ about wings.
a. theory ,observation
b. theory. hypothesis
c. hypothesis, observation
d. hypothesis, theory

A

Hypothesis, observation

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2
Q

Evolution, gravity, and the central dogma (DNA to RNA to Protein) are all models of how the world works that are the result of the accumulation of scientific evidence. This is why they are called _____.
a. observations
b. hypothesis
c. theories
d. predications

A

Theories

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3
Q

Science is a method that relies on testing if one’s interpretation of what one sees in the natural world. This is a strategy for gaining knowledge called ___.
a. neoclassicism
b. empiricism
c. Darwinism
d. superstition

A

Empiricism

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4
Q

People suffering from migraine headaches are recruited for a trial of a new therapy that exposes them to a strong magnetic field. The volunteers are split into two groups, one of which is exposed to the magnetic field and one of which only hears a hum that stimulates the sound of the electromagnets being turned on. In this experiment the magnetic field is called the ____.
a. control
b. variable
c. treatment
d. placebo

A

Treatment

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5
Q

The group that is exposed to the magnetic field in this experiment is called the ___ group.
a. control
b. experimental
c. treatment
d. variable

A

experimental

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6
Q

The group that is not exposed to the magnetic field but only hears a humming noise is the ___ group.
a. control
b. experimental
c. treatment
d. variable

A

control

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7
Q

The humming noise is an important part of the experimental design that is intended to make the two experiences as similar as possible, so that the only difference between them is the actual magnetic field itself. The humming noise represents a part of the experiment called a ____.
a. control
b. treatment
c. variable
d. placebo

A

variable

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8
Q

All of the participants in the migraine study report a significant decrease in migraine frequency and severity , regardless of whether or not they were actually subjected to the magnetic field. This phenomenon is called ____.
a. science
b. pseudoscience
c. superstition
d. the placebo effect

A

the placebo effect

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9
Q

A new energy drink is being sold by Dr. Schwarz and claims to be scientifically formulated to improve memory. No clinical trials are cited as evidence to support this claim. This is an example of ____.
a. science
b. pseudoscience
c. superstition
d. the placebo effect

A

pseudoscience

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10
Q

John does an experiment to see whether the amount of light that he gives plants will affect how tall they grow. When John goes to graph the results of this experiment the amount of light is the ____ variable, which goes on the _____ axis.
a. independent, x
b. independent, y
c. dependent, x
d. dependent, y

A

independent, x

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11
Q

In the diagram of a Lithium atom on the right the part of the atom indicated by B is a/an ____.
a. electron
b. proton
c. neutron
d. ion

A

neutron

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12
Q

The part of the atom indicated by A is a/an_____.
a. electron
b. proton
c. neutron
d. ion

A

electron

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13
Q

Based on this diagram, you know that the atomic number of Lithium is ____.
a. 1
b. 3
c. 6
d. +1

A

3

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14
Q

Also based on this diagram you can tell that Lithium will make ____ bond(s).
a. 1 ionic
b. 3 ionic
c. 1 covalent
d. 3 covalent

A

1 ionic

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15
Q

Carbon has an atomic number of 6. If Carbon has an atomic mass of 13 then we know that it has….
a. 7 protons
b. 7 neutrons
c. 7 electrons
d. 7 bonds

A

7 neutrons

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16
Q

Different versions of an element with the same number of protons and electrons but a different number of neutrons are called ____.
a. isomers
b. Ions
c. Isotopes
d. Radioactive

A

Isotopes

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17
Q

With an atomic number of 7, Nitrogen’s valence (outermost) electrons will be in the ____ shell.
a. first
b. second
c. third
d. s
e. p

A

second

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18
Q

Nitrogen’s last valence electron will fill a ___ orbital.
a. first
b. second
c. third
d. s
e. p

A

p

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19
Q

Nitrogen with therefore make ___ bonds with other elements.
a. covalent
b. ionic
c. hydrogen
d. van der waals

A

covalent

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20
Q

The pH of pure water is …
a. 0
b. 1
c. 7
d. 14

A

7

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21
Q

A solution with a pH of 9 is ___ than a solution with a pH of 7.
a. 20 times more acidic
b. 100 times more acidic
c. 20 times more basic
d. 100 times more basic

A

100 times more basic

22
Q

Which of the compounds below is probably an acid
a. NaCl
b. NaOH
c.HNO3
d. KOH

A

KOH

23
Q

Water has unusual properties due to the polar nature of the molecule, which leads to interactions between water molecules called ______.
a. Van der Waals interactions
b. ionic bonds
c. covalent bonds
d. hydrogen bonds

A

hydrogen bonds

24
Q

Water droplets sticking to a leaf and water climbing up the sides of a straw are due to
a. adhesion
b. cohesion
c. heat capacity
d. density

A

adhesion

25
Q

It takes a long time for water to boil because of water’s…..
a. adhesion
b. cohesion
c. high heat capacity
d. density

A

high heat capacity

26
Q

You are given a container of a powdered chemical that has its molecular weight listed on the label as 5g/mol. You are asked to make 10 liters of a 0.5 M solution. You will weigh out ____.
a. 5
b. 10
c. 25
d. 50
e. 100

A

25

27
Q

Sedoheptulose is a carbohydrate with seven carbons. Sedoheptulose has ___ hydrogens and ___ oxygens
a. 7,7
b. 7, 14
c. 14, 14
d. 14, 7

A

14, 7

28
Q

The special name for the covalent bond between two monosaccharide units is a
a. peptide bonds
b. phosphodiester bond
c. unsaturated bond
d. glycosidic bond

A

glycosidic bond

29
Q

The disaccharide Sucrose (table sugar) is composed of the monosaccharides
a. glucose and glucose
b. glucose and galactose
c. glucose and fructose
d. fructose and fructose

A

glucose and fructose

30
Q

The disaccharide Lactose is composed of the monosaccharides
a. glucose and glucose
b. glucose and galactose
c. glucose and fructose
d. fructose and fructose

A

glucose and galactose

31
Q

The disaccharide Maltose is composed of the monosaccharides
a. glucose and glucose
b. glucose and galactose
c. glucose and fructose
d. fructose and fructose

A

Glucose and glucose

32
Q

Soluble sugars, the kind that dissolves in liquids and taste sweet, include
a. monosaccharides and disaccharides
b. disaccharides and polysaccharides
c. monosaccharides and polysaccharides
d. polysaccharides and starches

A

monosaccharides and disaccharides

33
Q

_______ and __________ are indigestible polysaccharides
a. starch and glycogen
b. starch and chitin
c. chitin and cellulose
d. glycogen and cellulose

A

chitin and cellulose

34
Q

_______ is a polysaccharide produced by animals as a storage form of sugar in their muscles
a. glycogen
b. chitin
c. cellulose
d. glucose

A

glycogen

35
Q

Which of the following would provide a rapid release of sugar into the bloodstream when eaten?
a. cellulose
b. starch
c. lactose
d. glycogen

A

lactose

36
Q

Amino acids are joined together by a covalent bond between the carboxyl group of one amino acid and the amino group of another. The special name for this bond is a …….
a. peptide bond
b. glycosidic bond
c. hydrogen bond
d. phosphodiester bond

A

peptide bond

37
Q

The secondary structure of a protein consists of
a. the sequence of amino acid
b. alpha helices and beta sheets
c. the fully folded form of the polypeptide
d. multiple polypeptide chains

A

alpha helices and beta sheets

38
Q

When multiple polypeptide chains come together to form a larger protein complex this is called the ______ structure of a protein
a. primary
b. secondary
c. tertiary
d. quaternary

A

quaternary

39
Q

The driving force for the folding of the secondary structure of a protein is the formation of …..
a. hydrogen bonds
b. ionic bonds
c. covalent bonds
d. hydrophobic interactions

A

hydrogen bonds

40
Q

An enzyme is a kind of protein that speeds up chemical reactions by
a. lowering the energy of the starting materials
b. lowering the energy of the products
c. lowering the activation energy of the reaction
d. magic

A

lowering the activation energy of the reaction

41
Q

A protein can be made to unfold, or denature, with
a. heat
b. acid
c. high salt concentrations
d. all of the above

A

all of the above

42
Q

In the diagram to the right, the entire molecule denoted by A is a ____ molecule
a. fat
b. fatty acid
c. phospholipid
d. phosphate

A

phospholipid

43
Q

In the same diagram, D is pointing to a
a. saturated fatty acid
b. unsaturated fatty acid
c. wax
d. trans fat

A

unsaturated fatty acid

44
Q

The part of the molecule is denoted by B is ____
a. hydrophilic
b. hydrophobic

A

hydrophilic

45
Q

For the structure A, B, and C below, A is a
a. fat
b. amino acid
c. polysaccharide
d. protein

A

fat

46
Q

For the structure A, B, and C below, B is a
a. fat
b. amino acid
c. polysaccharide
d. protein

A

Amino acid

47
Q

For the structure A, B, and C below, C is a
a. fat
b. amino acid
c. polysaccharide
d. protein

A

polysaccharide

48
Q

At room temperatures molecule in A is a

A

solid

49
Q

C is a
a. fat
b. amino acid
c. polysaccharide
d. protein

A

fat

50
Q

Complete proteins are proteins that
a. are required in your diet
b. have 20 amino acids
c. have folded correctly
d. have all essential amino acids

A

have all essential amino acids

Biology 1101 (4 decks)

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