WorksheetsBIO MIDTERM
Total questions: 60
Worksheet time: 5hrs 0mins
Name
Class
Date
1.
What is science?
a)
A way of observing, but not testing.
b)
An organized way of gathering and analyzing evidence about the natural world.
c)
A way of taking data and manipulating it to match your bias.
d)
None of the above
2.
What if we only made observations and never followed the scientific method?
a)
Conclusions would not be based on data and evidence.
b)
Superstitions could be disproved.
c)
Only experimental groups, not control groups would used.
d)
All of these
3.
What is an inference?
a)
Using data to support or reject a hypothesis
b)
A logical interpretation based on existing information
c)
The part of an experiment that changes
d)
The part of an experiment that stays the same
4.
Two types of data that can be collected and analyzed are
a)
Independent and dependent
b)
Control and variable
c)
Quantitative and qualitative
d)
None of these
5.
Experimental Design #1: A teacher thinks a special scent pumped through the air conditioning vent into the classroom will make the students perform better on tests. The teacher pumps the special scent into the Period A class of 30 students and gives a test. The teacher gives the same test to the Period B class of 30 students, but does not pump the special scent in to the class. The Period A class reports a very relaxed feeling during the test and they score 8% better on the test than the Period B class. What is the control group in Experimental Design #1?
a)
Period A
b)
Period B
c)
The special scent
d)
The performance on the test
6.
Experimental Design #1: A teacher thinks a special scent pumped through the air conditioning vent into the classroom will make the students perform better on tests. The teacher pumps the special scent into the Period A class of 30 students and gives a test. The teacher gives the same test to the Period B class of 30 students, but does not pump the special scent in to the class. The Period A class reports a very relaxed feeling during the test and they score 8% better on the test than the Period B class. What is the dependent (or responding) variable in Experimental Design #1?
a)
Period A
b)
Period B
c)
The special scent
d)
The performance on the test
7.
Experimental Design #1: A teacher thinks a special scent pumped through the air conditioning vent into the classroom will make the students perform better on tests. The teacher pumps the special scent into the Period A class of 30 students and gives a test. The teacher gives the same test to the Period B class of 30 students, but does not pump the special scent in to the class. The Period A class reports a very relaxed feeling during the test and they score 8% better on the test than the Period B class. What is the Qualitative data in Experimental Design #2?
a)
The special scent was pumped into the classroom
b)
The students reported feeling relaxed
c)
Period A performed 8% better on the test
d)
None of these
8.
What is the most reliable outlet that scientists use to share their work?
a)
Peer-reviewed scientific journals
b)
TV morning talk shows
c)
Both of these
d)
None of these
9.
A well-tested explanation that unifies a broad range of observations and hypotheses is a
a)
Theory
b)
Law
c)
Rule
d)
Postulate
10.
Able to reproduce is a characteristic of life.
a)
true
b)
false
11.
Able to move is a characteristic of life.
a)
true
b)
false
12.
The genetic code of all living things is
a)
Teacher’s phone number
b)
Protein synthesis
c)
DNA
d)
tRNA
13.
Metabolism is
a)
The combination of chemical reactions through which an organism builds up or breaks down materials.
b)
Process of changes in shape and form from a larva to adult.
c)
Seasonal behavior resulting in movement from one environment to another.
d)
None of these
14.
A signal to which an organism responds is a(n)
a)
Stimulus
b)
Response
c)
Homeostasis
d)
None of these
15.
The relatively constant internal conditions that organisms maintain is
a)
Stimulus
b)
Response
c)
Homeostasis
d)
None of these
16.
What is the basic unit of matter?
a)
atoms
b)
molecules
c)
compounds
d)
none of these
17.
What are the valence electrons?
a)
the electrons on the innermost orbital
b)
the electrons on the outermost orbital
c)
the protons on the outermost orbital
d)
none of these
18.
Which type of bond happens when atoms gain or lose electrons, become positively or negatively charged and “stick like a magnet” to other atoms?
a)
ionic bond
b)
covalent bond
c)
valence bond
d)
none of these
19.
Which type of bond happens when atoms share electrons to fill their outer orbital?
a)
ionic bond
b)
covalent bond
c)
valence bond
d)
none of these
20.
What are polymers?
a)
single, individual molecules
b)
many molecules linked together
c)
like letters in the alphabet
d)
none of these
21.
Which macromolecule is the main part of skin and muscles, is responsible for the body’s repair and defense, and is the material of enzymes?
a)
carbohydrates
b)
lipids
c)
proteins
d)
nucleic acids
22.
Which macromolecule is used for short-term energy, is a part of the structure of cells, and promotes cell recognition?
a)
carbohydrates
b)
lipids
c)
proteins
d)
nucleic acids
23.
Which macromolecule is used for long-term energy storage, cell structure and the cushioning of body organs?
a)
carbohydrates
b)
lipids
c)
proteins
d)
nucleic acids
24.
Which macromolecule carries genetic instructions and is responsible for protein synthesis (instructions for making proteins)?
a)
carbohydrates
b)
lipids
c)
proteins
d)
nucleic acids
25.
Pigments, hormones and enzymes are examples of nucleic acids.
a)
true
b)
false
26.
How does an enzyme work?
a)
It lowers the amount of energy needed to start a chemical reaction
b)
It increases the amount of energy needed to start a chemical reaction
c)
It fills the outer orbital of an atom to make a bond
d)
none of these
27.
Whose work with the first microscopes and cells led to the cell theory?
a)
Anton van Leeuwenhoek
b)
Robert Hooke
c)
Charles Darwin
d)
Both Hooke and Leeuwenhoek
28.
Which of the following is NOT a principle of the cell theory?
a)
Cells are the basic unit of life
b)
All living things are made of cells
c)
Cells arise from spontaneous generation
d)
All cells come from pre-existing cells
29.
Prokaryotes do not have
a)
Cytoplasm
b)
Cell Wall
c)
Nucleus
d)
Genetic Material
30.
Which of the following cells has a true nucleus?
a)
Prokaryote
b)
Eukaryote
c)
Bacteria
d)
Organelles
31.
Which of the following serves as the cell’s boundary from its environment?
a)
Mitochondria
b)
Cell Membrane
c)
Chloroplast
d)
Channel Proteins
32.
Which organelle contains DNA (hereditary info)?
a)
Centrioles
b)
Endoplasmic Reticulum
c)
Mitochondria
d)
Nucleus
e)
Vacuoles
33.
Which organelle converts chemical energy in food to useable compounds and is the “power house” of the cell?
a)
Centrioles
b)
Endoplasmic Reticulum
c)
Mitochondria
d)
Nucleus
e)
Vacuoles
34.
Which organelle makes proteins by putting amino acids in long chains?
a)
Chloropast
b)
Cytoskeleton
c)
Golgi Apparatus
d)
Lysosome
e)
Ribosome
35.
Which organelle is only found in autotrophs, converts solar energy to chemical energy by storing it in sugar and is like a “solar panel?”
a)
Chloropast
b)
Cytoskeleton
c)
Golgi Apparatus
d)
Lysosome
e)
Ribosome
36.
Which structure regulates the movement of materials into and out of the cell?
a)
Mitochondria
b)
Cell Membrane
c)
Chloroplast
d)
Ribosome
37.
What is the lipid bilayer?
a)
Two layer cell membrane made of phospholipid molecules
b)
Single layer cell membrane made of phospholipid molecules
c)
Bilipids used for cell transport
d)
None of these
38.
Which molecules of the lipid bilayer are hydrophilic?
a)
Polar Heads
b)
Non-Polar Tails
c)
Both of these
d)
None of these
39.
The cell membrane contains channels that help move materials from one side to the other. What are these channels made of?
a)
Carbohydrates
b)
Lipids
c)
Bilipids
d)
Proteins
40.
Diffusion is the movement of molecules from
a)
High to Low Concentrations
b)
Low to High Concentration
c)
Equilibrium
d)
None of these
41.
Which type of cell transport requires input of energy from the cell because it is going against the concentration gradient?
a)
Diffusion
b)
Osmosis
c)
Facilitated Diffusion
d)
Active Transport
42.
The diffusion of water from high to low concentration across a membrane is called
a)
Diffusion
b)
Osmosis
c)
Facilitated Diffusion
d)
Active Transport
43.
What formula would you use to calculate the total magnification of a microscope used to view a specimen?
a)
Objective lens x 2
b)
Eyepiece x objective lens
c)
Both of these
d)
None of these
44.
Why do plants, algae and some bacteria perform photosynthesis?
a)
To break sugar
b)
To make oxygen
c)
To make sugar
d)
none of these
45.
What is ATP?
a)
Adenine Triple
b)
Adenosine Triphosphate
c)
Arsenic Tin Phosphate
d)
none of these
46.
Which letter represents where the pigment chlorophyll located?
a)
a.
b)
b.
47.
Which letter represents where the light-independent (Calvin Cycle) reactions?
a)
a.
b)
b.
48.
Which molecule picks up a H+ and two e- and carries them from the light-dependent reactions to the light-independent (Calvin Cycle) reactions to complete photosynthesis?
a)
NADP+
b)
NADPH
c)
Chlorophyll
d)
ATP
49.
The equation that summarizes cellular respiration is
a)
Oxygen + Sugar --> Carbon Dioxide + Water + Energy
b)
Oxygen + Water --> Carbon Dioxide + Sugar + Energy
c)
Sugar + Water --> Carbon Dioxide + Oxygen + Energy
d)
none of these
50.
Where does the first stage of cellular respiration, sometimes called “sugar breaking,” take place?
a)
Stroma
b)
Thylakoids
c)
Cytoplasm
d)
Mitochondria
51.
Which molecule from glycolysis is needed for the Krebs Cycle to begin?
a)
Carbon dioxide
b)
ATP
c)
Pyruvic Acid
d)
none of these
52.
Fermentation occurs when there is
a)
Too much oxygen
b)
No oxygen
c)
No carbon dioxide
d)
none of these
53.
How many total ATP are produced as a result of cellular respiration?
a)
2
b)
32
c)
36
d)
none of these
54.
The goal of cell division is
a)
Growth
b)
Repair
c)
Move materials out of the cell
d)
Both Growth and Repair
55.
During which phase in the cell cycle does the cell copy its DNA?
a)
G1 phase
b)
S phase
c)
G2 phase
d)
M phase
56.
Together, the G1 phase, S phase, and G2 phase make up _____.
a)
The cell cycle
b)
Interphase
c)
Cyclins
d)
None of these
57.
Chromatin is the form of DNA that is spread out into thin strands.
a)
true
b)
false
58.
In eukaryotic cells, the timing of the cell cycle is controlled by internal regulators called
a)
Centrioles
b)
Spindle fibers
c)
Cyclins
d)
The nuclear envelope
59.
Cells that experience stress, such as DNA damage, and do not pass certain internal checkpoints can go through programmed cell death. This is called
a)
Reduction division
b)
Apoptosis
c)
Homologous chromosomes
d)
Mitosis
60.
Cancer is a disorder in which some cells have lost the ability to regulate their _____.
a)
Size
b)
Cell cycle
c)
Spindle fibers
d)
Surface area
100 %
