What does CHNOPS stand for?

Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorus, Sulfur

What are the charges of the three particles which make up an atom?

Proton is +, Electron is - and Neutron is neutral.

What's a monomer? What's protein's monomer?

A subunit of a polymer. Amino Acids

Why do we care about buffers in biology?

They allow homeostasis to be maintained.

What is the definition of a "fit" trait in biology?

A trait that improves survival and reproductive success.

Ice is less dense than water due to lots of H-bonds forming.

Why is life carbon-based?

Carbon has 4 valence electrons.

What is a hydrogen bond?

A weak bond due to attraction due to partial charges.

What is a peptide formed between?

a carbonyl group and an amino group of two amino acids.

a tertiary structure involves:

interactions between side chains of the protein.

A spontaneous reaction...

doesn't require input of energy to occur.

Hydrocarbons are usually __________. But we can make them dissolve in water by adding on _____.

Hydrophobic. Functional Groups.

a secondary structure involves:

H-bonds between the backbone of the protein.

How do new traits arise?

Mutations in the DNA of a gene.

What does it mean to denature a protein?

Using harsh conditions to cause a protein to unfold.

Why does water have polarity?

Water is made of polar covalent bonds.

What is a covalent bond?

A bond due to two atoms sharing electrons.

What is a ionic bond?

A bond due to attraction of opposite charges

In Pasteur's experiment, which flask DID NOT exhibit growth? What did this support?

No growth in swan flask. Support cell theory.

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Quiz 1 Review Quiz

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Questions 39

Answers

1
What does CHNOPS stand for?
Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorus, Silicon
Carbon, Hydrogen, Nitrogen, Oxygen, Potassium, Sulfur
Carbon, Helium, Nitrogen, Oxygen, Phosphorus, Sulfur
Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorus, Sulfur
2
how many electrons make up the first electron shell? second? third? Which are valence electrons
2, 8, 8. outermost shell.
8, 8, 8. first shell.
8, 8, 8. outermost shell.
2, 8, 8. first shell.
3
Define mass number.
neutrons + electrons in an atom.
Protons + neutrons in an atom.
protons in an atom.
Protons + electrons in an atom.
4
What are the three categories of Amino Acids?
covalent, ionic, nonpolar
nonpolar, polar, charged
basic, acidic, neutral
nonpolar, acidic, basic
5
Evolution requires ________. At what level does evolution occur?
Genetic homology. Organismal.
Genetic homology. Population.
Genetic variation. Population
Genetic variation. Organismal.
6
What are the charges of the three particles which make up an atom?
Proton is +, Electron is neutral and Neutron is +.
Proton is +, Electron is - and Neutron is neutral.
Proton is neutral, Electron is + and Neutron is -.
Proton is -, Electron is + and Neutron is neutral.
7
What's a monomer? What's protein's monomer?
A subunit of a polymer. Amino Acids
A subunit of a polymer. Nucleic Acids.
A type of polymer. Amino Acids.
A type of polymer. Nucleic Acids
8
Why do we care about buffers in biology?
They allow homeostasis to be maintained.
They allow solutions to be really basic.
They allow solutions to be really acidic.
They prevent hydrogen ions being formed.
9
What is the definition of a "fit" trait in biology?
A trait that improves intelligence and strength.
A trait that improves beak size and agility.
This was a pretty hard question to write good answers for.
A trait that improves survival and reproductive success.
10
Why does ice float?
Ice is less dense than water due to few H-bonds forming.
Ice is less dense than water due to ionic bonds forming.
Ice is less dense than water due to lots of H-bonds forming.
Ice is less dense than water due to covalent bonds forming.
11
Why is life carbon-based?
Carbon likes to bond with hydrogen.
Carbon has 4 valence electrons.
There is lots of carbon on planet earth.
Carbon is hydrophobic.
12
What is a hydrogen bond?
A bond due to two atoms sharing electrons.
A weak bond due to attraction due to partial charges.
A bond due to attraction of opposite charges
13
What is a peptide formed between?
a carbonyl group and an amino group of two amino acids.
two amino groups of two amino acids.
two side chains of a protein.
A hydrogen and an oxygen of two amino acids.
14
What are the products of the ionization of water?
H+ and OH-
Trick question, water is covalent and CANNOT ionize
OH- and H2
15
Hydrolysis of ATP can be coupled with ______ reactions to make them occur
exergonic.
endergonic
16
Which of the following is NOT a fundamental theory in biology
The theory of evolution
The cell theory
Gene theory
The theory of chromosomal inheritance
17
a tertiary structure involves:
H-bonds between the backbone of the protein.
interactions between side chains of the protein.
the sequence of amino acids from N-terminus to C-terminus.
multiple protein subunits.
18
A spontaneous reaction...
Requires input of energy to occur.
doesn't require input of energy to occur.
19
Water would be an excellent solvent for all of the following except for what?
A hydrocarbon.
Table Salt (NaCl)
Glucose.
20
If [H+] > [OH-], a solution is _____. If [OH-] > [H+], a solution is _____.
Basic. Acidic.
Acidic. Basic.
21
Primary structure has:
multiple polypeptide subunits.
alpha-helices
an N-terminus and a C-terminus
beta-pleated sheets
22
Hydrocarbons are usually __________. But we can make them dissolve in water by adding on _____.
Hydrophobic. Long carbon chains.
Hydrophillic. Long carbon chains.
Hydrophillic. Functional Groups.
Hydrophobic. Functional Groups.
23
a quaternary structure involves:
multiple protein subunits.
H-bonds between the backbone of the protein.
interactions between side chains of the protein.
the sequence of amino acids from N-terminus to C-terminus.
24
If an element's outermost shell is filled, it will be ________.
An acid!
Chemically unreactive!
chemically reactive!
A base!
25
If pH changes from 4 to 6, has the concentration of Hydrogen ions gone up or down?
Gone up.
No change.
Gone down.
26
a secondary structure involves:
multiple protein subunits.
interactions between side chains of the protein.
H-bonds between the backbone of the protein.
the sequence of amino acids from N-terminus to C-terminus.
27
Which if the following is a hypothesis?
My lighter is out of gas.
My lighter worked once refilled with gas.
My lighter won't work.
If I refill my lighter with gas, then it will work.
28
How do new traits arise?
Spontaneous generation of new chromosomes.
Mutations in the DNA of a gene.
Natural selection.
Mixing of parental and maternal DNA.
29
spontaneous reactions are ________. non-spontaneous reactions are ________.
exergonic. endergonic.
endergonic. exergonic.
30
Hydrolysis of ATP to ADP + Pi is...
highly exergonic
highly endergonic
31
What does it mean to denature a protein?
Using harsh conditions to cause a protein to unfold.
Using mild conditions to cause a protein to unfold.
using mild conditions to cause a protein to split apart.
Using harsh conditions to cause a protein to split apart.
32
Reduction reactions involve
loss of electrons.
gain of electrons.
33
Why does water have polarity?
Water is attracted to itself.
Water is made of ionic bonds.
Water is made of polar covalent bonds.
Water is made of covalent bonds.
34
What is a covalent bond?
A bond due to attraction of opposite charges
A bond due to two atoms sharing electrons.
A weak bond due to attraction due to partial charges.
35
Oxidation reactions involve
loss of electrons.
gain of electrons.
36
During spontaneous reactions, the total usable energy of the system (decreases or increases)
decreases
increases
37
What are the three major groups all organisms can be classified by?
Bacteria, Archaea, Eukarya
Animals, fungi, plants
Bacteria, animals, plants
Bacteria, Eukarya, Protista
38
What is a ionic bond?
A weak bond due to attraction due to partial charges.
A bond due to two atoms sharing electrons.
A bond due to attraction of opposite charges
39
In Pasteur's experiment, which flask DID NOT exhibit growth? What did this support?
No growth in swan flask. Support cell theory.
No growth in swan flask. Support spontaneous generation.
No growth in straight flask. Support spontaneous generation.
No growth in straight flask. Support cell theory.

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