Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Biology 100 Exam 1 > Exam 1 > Flashcards

Exam 1 Flashcards

1
Q

human genetic variation

A

genetic differences in and among populations

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

experiments

A

a procedure carried out to support or refute a hypothesis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Atoms are opposed of _____ and _____, while molecules are composed of ____

A

Protons and Neutrons; Atoms

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

If an atom gains or loses an electron, it is called…

A

An ion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

If an atom gains or loses an neutron, it is called…

A

An Isotope

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

An element, purified from ordinary rock in the Sierra Nevada, is analyzed and found to have 25 protons, 30 neutrons, and 23 electrons. It is best characterized as

A

An Ion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Independent Variable

A

what is manipulated in an experiment

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Dependent Variable

A

what is measured in an experiment - an outcome, the data

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

If you wanted to create a new, heavier atom using parts of atoms, you could do so by adding

A

Protons in the nucleus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

In the molecule below, which atom has a higher electronegativity? NaCl

A

Chlorine Atom

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What do you call the factor or variable that is manipulated in an experiment?

A

Independent Variable

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What do you call the factor or variable that is measured in an experiment?

A

Dependent Variable

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

A researcher performs an experiment to determine how music affects learning and memory. She has some students listen either to jazz, classical music, or white noise while studying for a math test. She then compares how each performed on the test. What is the control group?

A

White Noise

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

True or False: Water is a charged (ionic) molecule.

A

False

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

True or False: Water is a polar molecule?

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

True or False: Water is an organic molecule.

A

False

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

O-H is a ___ Bond; O…H is a ___ bond

A

A polar covalent bond; Hydrogen bond

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

When in a watery environment, which type of bond is typically strongest?

A

A nonpolar covalent bond

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

When in a watery environment, which type of bond is typically weakest?

A

An ionic bond

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Given the information about the following atom, 3919K+, What is the mass?

A

39

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Given the information about the following atom, 3919K+, how many electrons does it contain?

A

18

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Given the information about the following atom, 3919K+, how many neutrons does it contain?

A

20

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Use the information about the following atoms to complete the statement
16 8 O, 1 1 H, 12 6 C. H2O is the molecular formula for water. Water is composed of __A__ hydrogen atoms and __B__ oxygen atoms, and has a mass of C .

A

A: 2, B: 1, C: 18

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Use the information about the following atoms to answer the question
16 8 O, 1 1 H, 12 6 C. The bicarbonate molecule (HCO3-) is important in maintaining the correct pH in our blood. Its mass is?

A

61

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
BaCl2 is an inexpensive salt that dissolves in water, forming a Ba2+ and two Cl- ions. Which elemental species, chlorine or barium, is more electronegative?
Chlorine
26
True or False: A water molecule has an overall net charge.
False
27
Which of the following bond would (theoretically) take the most energy to disrupt?
the bond between a carbon and carbon in a lipid
28
H2CO3 reacts in water to release bicarbonate, HCO3-, and H+. Which of the following statements is FALSE, based on the above information?
H2CO3 is an ion.
29
Noncompetitive inhibitor
causes the enzyme to become misshapen
30
what does the substrate bind
Active cite
31
True or False: Priya is 35 and lactose intolerant. She is unable to drink dairy products with lactose but is able to anabolize lactose.
True
32
What is the gas that creates an acid?
Carbon Dioxide
33
What does carbon dioxide combine with to make acid?
Water
34
If someone was breathing very rapidly, would the pH level in their blood indicate (higher or lower) acidity?
Lower
35
A protein is composed of 5 polypeptide subunits. Three of the subunits are identical, the other two are unique (different). At what structural level is this protein functional (one word answer)?
Quaternary
36
What determines the primary structure of a polypeptide?
gene
37
A protein is composed of 5 polypeptide subunits. Three of the subunits are identical, the other two are unique (different). How many genes are needed to form this protein?
3
38
Experimental/Treatment Groups
consists of the people who are experiencing the effects of the independent variable
39
atom
basic unit of a chemical element
40
nucleus
the membrane-enclosed organelle within a cell that contains the chromosomes
41
Proton
Has a positive electric charge
42
polypeptide
linear chain of amino acids
43
what are the 4 levels of structure?
primary, secondary, tertiary, and Quaternary
44
Structure 1
gene directed
45
structure 2
H bonds along polypeptide
46
structure 3
R groups driven; fold to avoid interacting with H2O
47
Structure 4
4 or more polypeptide sub units assemble into 1 protein
48
where does a noncompetitive inhibitor bind to an enzyme?
outside of the enzyme
49
A,G,C,T ; DNA or RNA
DNA
50
A,G,C,U ; DNA or RNA
RNA
51
Deoxyribose; DNA or RNA
DNA
52
Ribose; DNA or RNA
RNA
53
What are the three subatomic particles that make up an atom?
protons, neutrons, and electrons
54
Strengths of an ionic bond:
- directly dependent upon the quantity of the charges - dependent on the distance between the charged particles
55
how does partial charge differ from a complete charged ion?
partial charges arise from uneven sharing of electrons in bonds, whereas complete negative charges result from an excess of electrons relative to protons
56
metabolism
chemical reactions in the body's cells that change food into energy
57
anabolism
when smaller biomoleclules become larger
58
Polysaccharides
long chains of carbohydrate molecules
59
how do polysaccharides differ from each other?
structure
60
What are some functions of proteins?
structural support, hormones, and enzymes
61
how are polymers formed from monomers?
form covalent bonds by sharing electrons
62
difference between an atom, molecule, and ion?
atoms: singular neutral particles molecules: neutral particles made of 2 or more atoms bonded together ion: a positively or negatively charged molecule
63
Strength of a covalent bond
stable structure
64
advantages of a hydrogen bond
life sustaining properties and stabilize the structures of proteins and DNA

Biology 100 Exam 1 (4 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions