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Bio 151 Exam 1
Electrons interact with each other
A Bottom-Up Organization means small to large
Bio 151 Exam 1
70 terms
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Chapters 1-3
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Questions
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Answers
1
A Bottom-Up Organization means small to large
True
False
2
Electrons interact with each other
True
False
3
Anything that can cause change or work
Energy
Light Energy
Potential
Matter
4
How many pairs of chromosomes does one person have?
46
2.3
23
35
5
Prokaryotes are more complex than Eukaryotes
False
True
6
An electron's attraction strength is measured by what?
Covalent
Electronegativity
Chemical Bonds
Octet Rule
7
Ionic bonds are an attraction between a positive and a negative
True
False
8
Which is the largest?
Population
Biosphere
Ecosystem
Community
9
Which receives an extra proton?
Hydroxide Ion
Hydronium Ion
Hydrogen Ion
Helium Ion
10
All cells have the same DNA except for...
Sex Cells
Animal Cells
Brain Cells
Plant Cells
11
What is an aqueous solution?
Water is the solution
Water is the solute
Water is the solvent
Something
12
What are the two components of a valid hypothesis?
Experiment and Conclusion
Right and Wrong
Testable and Falsifiable
Theory and Scientific Method
13
What is NOT true about hydrogen bonds?
Stabilizes complex molecules
Gain strength in numbers
Strong individually
Hydrogen atoms interact with other partial negative atoms
14
Carbon-11 has how many neutrons?
5
7
4
6
15
What is the goal of science
To gain knowledge
Apply scientific knowledge for specific purpose
Understand natural phenomena
To be smart
16
What kind of electrons can form a bond?
Shared Valence Electrons
Non-Shared Valence Electrons
Non-Shared Non-Valence Electrons
Shared Non-Valence Electrons
17
What is classifying species into groups?
Taxonomy
Sorting
Chemistry
Biology
18
What does our body need less than 0.1% of?
Atoms
Water
Cells
Trace Elements
19
A change in the number of this leads to a different element
Protons
Neutrons
Electrons
Cells
20
Ion is a change in the number of neutrons
True
False
21
All compounds are molecules
True
False
22
A reactant leads to a product
False
True
23
Chemistry is the study of....
Chemicals
Cells
Matter
Elements
24
What is the most basic unit of life?
Charge
Nucleus
Proton
Cell
25
Positive Feedback means you get a "positive" reaction
True
False
26
Archaea are very common
True
False
27
Offspring will receive half of their genes from each parent
False
True
28
DNA > Transcribed > mRNA > Translated > Protein
True
False
29
Water is an example of what? (Best Choice)
Liquids
Covalent
Polar
Ionic
30
A Theory is an educated guess
True
False
31
Oxygen is NOT an example of matter
True
False
32
Polar bonds are the strongest chemical bonds in the body
True
False
33
The dissolving agent
Solute
Solution
Solvent
Aqueous Solution
34
Nitrogen has an atomic number of what?
8
7
9
6
35
Lipids have hydrophilic heads
True
False
36
Which is the smallest unit?
Micro
Milli
Deca
Deci
37
Which of these is caused by the others?
Adhesion
Surface Tension
Cohesion
Capillary Action
38
What is the normal pH of blood?
5.4
7.4
6.4
8.4
39
Which of the following is NOT a domain?
Bacteria
Eukarya
Archaea
Prokarya
40
Valence Electrons are the closest electrons to the nucleus
True
False
41
Polar molecules dissolve non-polar molecules
True
False
42
What cannot be broken down to smaller substances?
Elements
DNA
Nucleus
Cells
43
What is the desire for atoms to fill the valence shell?
Chemical Bonds
Octet Rule
Orbital Rule
Chemical Behavior
44
What does Science mean?
To be smart
To do
To know
To learn
45
Which is an example of a Prokaryote?
Bacteria
Animal
Archaea
Plant
46
Ice is more dense than water
False
True
47
Chemical Behavior is determined by what
Number of protons and neutrons
Atomic Number
Distribution of electrons
Number of electrons
48
What is Biology?
Study of Plants
Study of Chemicals
Study of Animals
Study of Life
49
What is adhesion?
Tight bonding of water or same molecules
A measure of how hard it is to break the surface of a lipid
Attraction between different polar molecules
Rise of water in porous spaces
50
All cells have the following EXCEPT...
Rhibosomes
Mitochondria
DNA
Cell Membrane
51
Water has a higher specific heat than most fluids
True
False
52
What is true about a colloid?
Dissolves in water
Sinks in water
Floats in water
Something else
53
Cation is negative
False
True
54
Main energy for producers
Matter
Potential
Light Energy
Energy
55
Qualitative is based on descriptions
False
True
56
Radioactive Isotopes decay spontaneously
True
False
57
In RNA, Adenine matches to Uracil
False
True
58
Moderation of Temperature means water can absorb/release a large amount of heat
True
False
59
What is cohesion?
A measure of how hard it is to break the surface of a lipid
Tight bonding of water or same molecules
Attraction between different polar molecules
Rise of water in porous spaces
60
Species must be able to reproduce the same thing
False
True
61
What is the only single-celled domain?
Plantae
Protista
Animalia
Fungi
62
A codon makes up how many nucleotides?
4
3
1
2
63
Tissue is smaller than organelles
False
True
64
Solvents dissolves solutes
True
False
65
Sum of all chemical reactions within organisms
Metabolism
Sythesis
Matter
Nucleotide
66
What is not larger than a population?
Ecosystem
Biosphere
Organisms
Community
67
Noble gasses...
Are unstable
Are inert
Are very reactive
Need electrons
68
Guanine matches to...
Adenine
Cytosine
Thymine
Uracil
69
An acid has more hydrogen
True
False
70
Carbon has an atomic number of what?
6
4
5
3
