Which four of these 25 elements make up approximately 96% of living matter?

carbon, hydrogen, nitrogen, oxygen

Which of the following is NOT false?

Protons are positive & neutrons are neutral

Isomers refer to ___________ & isotopes refer to _________

different molecules, the same element

A control group is needed to

Provides a basis for comaprison to the experimental group

What is a hypothesis?

a tentative explanation that can be tested and is testable

A controlled experiment is an experiment that has

2 groups with a control group & an experimental group

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Simmons S-1 Biology # 1

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1st set of quiz to study for final

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Questions 18

Answers

1
Which four of these 25 elements make up approximately 96% of living matter?
carbon, sulfur, phosphorus, hydrogen
oxygen, hydrogen, calcium, sodium
carbon, hydrogen, nitrogen, oxygen
carbon, oxygen, sulfur, calcium
2
Carbon-14 & Carbon-12 are
unrelated
isomers
molecules
isotopes
3
Glucose, fructose & glactose are
isomers
amino acids
unrelated
isotopes
4
The H+ end of a water molecule is attracted to the O- end of another water molecule due
ionic bonds
hydrogen bonds
to polar bonds
hydrophillic bonds
5
Which of the following indcates the number of protons in an atoms nucleus.
Atomic number
Atomic mass
Mass weight
Mass number
6
Which of the following is NOT false?
electrons are negative & protons are neutral
Protons are positive & neutrons are neutral
Protons & electrons are negatively charged
protons are positive & neutrons are negative
7
Isomers refer to ___________ & isotopes refer to _________
the same molecule, different elements
none of these
the same elements, the same molecule
different molecules, the same element
8
How many electron pairs does carbon share in order to complete its valence shell?
4
3
1
8
9
What gives rise to the cohesiveness of water molecules?
ionic bonds
Hydrophobic interactions
nonpolar covalent bonds
hydrogen bonds
10
A control group is needed to
Provides a basis for comaprison to the experimental group
Assures the experiment can be repeated
write an if then statement
to keep track of data
11
What is a hypothesis?
a fact based on quantitative data that is falsified
the same thing as an unproven theory
a tentative explanation that can be tested and is testable
a fact based on qualitative data that is testable
12
The difference between a hpothesis & theory is
A theory is just a set of observations
there is no real difference
a theory must be absolutely proven
a theory is more comprehensive
13
The four elements that make up 96% of all living organisms are
C,H,O,N
C,H,N,P
C,H,N, P
O, H20
14
How do isotopes of the same element differ from each other?
number of protons
amount of radioactivity
number of neutrons
number of electrons
15
A controlled experiment is an experiment that has
2 groups with 2 variables
at least two groups with multiple variables
2 groups with a control group & an experimental group
one group, one variable
16
Which of the following properties or processes do we associate with living things?
evolutionary adaptations
energy processing
all of the responses
responding to the enviroment
17
Which of the following is something that prokaryote & eukaryote cells do NOT have in common?
ribosomes
DNA
Nucleus
cytoplasm
18
The atomic number equals the number of _______ & the mass number = the number of ________
neutrons, protons & electrons
isotopes, elements
Protons, electrons + neutrons
protons, protons + Netrons

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