stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
Chapter 1-2 Flashcards | StudBud
Explore
/
Chapter 1-2
Chapter 1-2
66 terms
·
StudBud Administration
·
141 plays
Content Knowledge quiz for Chapter 1 Biology in Focus
Flashcards
66 cards
F
Practice quiz
P
Host live
L
Questions
66
Answers
1
Biology is the study of...
The Universe
Chemicals
Life
Medicine
2
What is an atom?
Corrosive substances
Mixture of compounds
Smallest unit of matter
The result of a chemical reaction
3
What are the four emergent properties of water that are important for life?
cohesion, expansion upon freezing, high heat of evaporation, capillarity
polarity, hydrogen bonding, high specific heat, high surface tension
cohesion, moderation of temperature, expansion upon freezing, solvent prop
mod of temperature, solvent properties, high surface tension, capillarity
4
Temperature represents the average kinetic energy of molecules
True
False
5
molecular mass
none
A few compounds having different empirical and molecular
The molecular formula of a compound
Atomic masses of all the atoms present in one molecule of a molecular sub
6
What is an aqueous solution?
A solute of water
An aqua liquid
A sediment of water
water is the solvent
7
What is cohesion?
Two people who plan together.
The attraction on the surface of a liquid.
The attraction between particles of two different things.
How strongly the particles of a fluid attract each other.
8
Which of these properties of water are helpful in transporting water through a plant?
High heat capacity
Good solvent
Cohesion
Adhesion
9
Polar Covalent Bonds...
Share evenly
Do not share evenly
10
What is the "scientific method"?
An organized way of questioning, seeing, and answering.
A set series of steps used by scientists only
A series of steps with a set order of use
none of these
11
What is adhesion?
Water bonding with nonpolar molecules
Water bonding with other water molecules
Water bonding against another surface
The energy to change a substance from one form to another
12
Hydrophilic substances are ___.
nonpolar
acidic
extremely dense
water soluble
13
(True or False): A hypothesis is made before an observation has taken place.
True
False
14
What is an element?
A single atoms that is uniform.
Somethings hing that has a bitter taste.
Something that consists of two or more atoms.
Consists of different types of compounds
15
Hydrogen Bonds
Are strong bonds
Form between hydrogen atoms in different molecules
Hold water molecules to one another
Hold 2 hydrogen atoms together in a molecule of hydrogen gas
16
Potential energy is the energy that matter has bc of its location or structure
False
True
17
What is the atomic number?
Number of protons
Number of neutrons
Number of electrons
18
What is gene expression?
the expression of all genes in the organism
the attachment of DNA polymerase to the operon
the attachment of DNA polymerase to the promoter
the process of converting information from a gene to its cellular product
19
Emergent Properties:
result from the arrangement and interaction of parts within a system
same species, same place, same time
interacting populations
lowest level of biological structure showing all characterustics of life
20
what are buffers?
makes environment very basic
makes environment very acidic
regulates pH to a narrow range
causes the pH to fluctuate
21
Which of the following ARE NOT properties of water?
Adhesion
Fixed Shape
Surface tension
Cohesion
22
What is molarity?
Molarity = liters per # moles
Molarity = # moles per liter
Molarity = grams per # moles
A way to describe the concentration of solution
23
Prokaryotic and Eukaryotic cells both have
DNA
Mitochondria
Chloroplast
a Nucleus
24
What is a solute?
a solution
substance being dissolved
a mixture of two substances
substance doing the dissolving
25
Hydrophobic substances are ___.
polar and don't dissolve in water
nonpolar and don't dissolve in water
polar and dissolve in water
nonpolar and dissolve in water
26
What is a compound?
Homogeneous
More than one element put together
More than one atom put together
The total number of atoms in a formula
27
Atomic mass = _____________ + _____________
Protons + neutrons
Valence Electrons + neutrons
Neutrons + electrons
Electrons + neutrons
28
What range on the pH scale is an acid?
0-14
0-6
8-14
7
29
Chemical reactions change substances into diff. ones by breaking and forming chemical bonds.
True
False
30
What is a calorie?
all of these
an amount of heat needed to raise the temp of water
4.184 J/g·°C
.001 Calorie
31
Energy levels of Electrons
Shells
Particles
Clouds
Currents
32
The entire set of genetic information in a cell or an organism is referred as a _______.
gene
genome
chromosome
chromatin
33
Which structure is only found in eukaryotic cells?
chloroplast
DNA
cell wall
nucleus
34
Which example least shows that form and function are related?
Fish that swim rapidly have bodies that are streamlined.
Seeds that are dispersed by wind are very light.
Plants that live in dry areas have large roots for absorbing water.
None of the choices is correct.
35
What is matter?
Matter has mass and takes up space
matter is invisible
matter is liquid
Matter doesnt take up space
36
Van Der Waals
For a split second the neg and pos are on different sides
Positive and negative charges are together
There is no positive charge
There is no negative charge
37
What is specific heat?
the heat required to raise the temperature by one degree
amount of heat an object absorbs after a minute in the sun
the average temperature of a given substance
the amount of heat needed to melt a solid
38
The term proteomics refers to the study of
identifying certain base pairs in DNA.
the proteins resulting from activation of specific genes
DNA sequences with unknown functions.
gene sequences in individual chromosomes.
39
Define nonpolar covalent:
"equal" electron sharing; still covalent due to similar electronegativity
"unequal" electron sharing; still covalent due to similar electronegativity
"unequal"electron sharing;still covalent due to different electronegativity
40
Why does ice float in liquid water?
hydrogen bonds are more chaotic in ice, making it less dense
hydrogen bonds in ice are more ordered, making it less dense
hydrogen bonds in water are more ordered, making it less dense
hydrogen bonds are nonexistant, allowing ice to float
41
Systems biology
study of biological systems by analyzing interations b/t its parts
a group of related lab tools
the study of life science
a set of plants working together
42
A group of organisms from one species living together in a given environment is referred to as _________.
a community
the biosphere
an ecosystem
a population
43
Electronegativity is a measure of....
The charge of an atom
The energy required to take electrons from an atom
How much an atom pulls on electrons
44
Genes are the units of inheritance that transmit information from parents to offspring.
False
True
45
Ionic Bonds:
Give/Take Electrons
Share Electrons
Split Electrons
46
Evaporative Cooling
Sum of the protons and neutrons in the nucleus of an atom.
Composed of 2 or more atoms held together by covalent bonds.
- The dissolving agent of a solution.
- As a liquid evaporates, the surface of the liquid that remains behind coo
47
Covalent Bonds:
Split Electrons
Give/Take Electrons
Share Electrons
48
Chemical equilibrium is
static: forward and reverse reactions cease
dynamic: only the reverse reaction continues
dynamic: only the forward reaction continues
dynamic: forward & reverse reactions continue at equal rates
49
The actions of an organism are based on activities of _______.
Organ systems
Cells
Tissues
Organs
50
What is the correct order from smallest to largest?
cell, organelle, organ system, community, ecosystem
molecule, organism, population, community, biosphere
organelle, cell, population, biosphere, ecosystem
molecule, cell, tissue, ecosystem, community
51
The dependent variable is the.....
Changed by the scientist
Stays the same
Results
Is known before the experiment
52
Two isotopes of an element have the same number of:
photons
neutrons
pokemons
protons
53
What is surface tension?
How strong water is
The measure of cohesive forces that hold molecules together
The amount of force on the surface of something
The amount of stickiness on the surface of a liquid
54
Which subatomic particles are located inside the nucelus of an atom?
electrons & neutrons
protons & electrons
protons & neutrons
electrons & protons
55
What are the unifying themes of biology?
interactions
evolution
organization
energy and matter
information
56
Acids increase what ion in solution?
hydroxide
hydronium
hydrogen
hyroxogenium
57
What is a solvent
a stable physical mixture of two or more substances
a substance that dissolves a solute and makes a solution
a substance dissolved into a solution
a liquid not capable of being mixed to form a stable solution
58
Who proposed the Theory of Evolution?
Charles Darwin
Robert Hooke
James Watson
59
What are valence electrons?
The electrons located in the outermost shell
The smallest electrons
Electrons that are closest to the nucleus
Electrons that do not bond
60
What range on the pH scale is a base?
0-14
0-6
7
8-14
61
What are the three domains?
mammals, amphibians, and reptiles
plants, animals, and fungi
bacteria, archaea, and eukarya
bacteria, protists, and fungi
62
The gecko can climb walls due to a type of bond/ interaction, whereas a spider can walk on water due to different kind.
polar covalent, Van der Waals
strong ionic bond, hydrogen bond
van der Waals, hydrogen bond
nonpolar covalent, polar covalent
63
What is kinetic energy?
Gravity
Energy of Science
Energy of motion
Energy that is stored
64
Bioinformatics is
development of personalised medicine
uses computational tools to store organize, and analyze lg. amounts of data
construction of molecular clocks in evolutionary studies
production of phylogenetic tree diagrams
65
Water has special properties, such as high cohesion and others. What kind of bonds between molecules allows for this?
hydrogen bonds
strong ionic bonds
polar covalent bonds
nonpolar covalent bonds
66
What is the independent variable
The variable measured
When you hold something constant
The variable being tested and changed
The outcome
