Worksheets2021-2022 Biology mid-term review
Total questions: 47
Worksheet time: 24mins
Science is best described as a
set of facts
way of knowing
collection of beliefs
list of rules
The work of scientists usually begins with
testing a hypothesis
careful observation
creating experiments
drawing conclusion
The work of scientists usually begins with
testing a hypothesis
careful observations
creating experiments
drawing conclusion
Information gathered from observing a plant grow 3 cm over a two-week period is called
inferences
variables
hypotheses
data
A scientific hypothesis
can be based on personal beliefs or opinions
can be tested by experiments or observations
does not have to be tested to be accepted as correct
is a proven fact with much evidence to support it
Suppose that a scientist proposes a hypothesis about how a newly discovered virus affects humans. Other virus researchers would likely
reject the hypothesis right away
change the hypothesis to fit their own findings
design new experiments to test the proposed hypothesis
assume that the hypothesis is true for all viruses
Suppose that a scientific idea is well-tested and can be used to make predictions in numerous new situations, but cannot explain one particular event. This idea is a
hypothesis that is incorrect
hypothesis that must be retested
theory that should be discarded
theory that may need revision
A theory
is always true
is the opening statement of an experiment
may be revised or replaced
is a problem to be solved
Which of the following is NOT a characteristic of all living things?
growth and development
ability to move
response to the environment
ability to reproduce
Cells in multicellular organisms have many different sizes and shapes. These differences in cells is called cell specialization. Cell specialization allows cells to
reproduce
perform different funtions
respond to their environment
be less complex
The process by which organisms keep everything inside their bodies within certain limits is called
homeostasis
evolution
metabolism
photosynthesis
Using a universal system of measurement is MOST important during which part of scientific methodology?
asking questions
forming a hypothesis
collecting data
drawing conclusion
Which of the following is a substance formed by the chemical joining of two or more elements in definite amounts?
compound
isotope
nucleus
enzyme
Water molecules are polar, with the
oxygen side being slightly positive and the hydrogen side being slightly negative
oxygen and hydrogen sides being slightly positive
oxygen and hydrogen sides being slightly negative
oxygen side being slightly negative and the hydrogen side being slightly positive
When salt is dissolved in water, water is the
reactant
solution
solute
solvent
Which of the following is NOT a function of proteins?
store and transmit genetic information
help to fight disease
control the rate of reactions
move substances into or out of cells
Which of the following is NOT a principle of the cell theory?
Cells are the basic units of life
All living things are made of cells
Very few cells are able to reproduce
All cells are produced from existing cells
Which of the following enclose their DNA in a nucleus?
prokaryotes
bacteria
eukaryotes
viruses
Not all cells are alike. Which of the following is NOT a true statement about differences between cells?
Cells come in many different shapes
Different kinds of cells are different sizes
Some cells have a nucleus, but others do not
Most cells have a membrane, but some do not
Which of the following is function of the nucleus?
stores DNA
stores sugars
builds proteins
packages proteins
Which organelle breaks down organelles that are no longer useful?
Golgi apparatus
lysosome
endoplasmic reticulum
mitochondrion
Which of the following is a function of the cytoskeleton?
helps a cell keep its shape
contains DNA
surrounds the cell
helps make proteins
Which sequence correctly traces the path of a protein in the cell?
ribosome, endoplasmic reticulum, Golgi apparatus
ribosome, endoplasmic reticulum, chloroplast
endoplasmic reticulum, lysosome, Golgi apparatus
ribosome, Golgi apparatus, endoplasmic reticulum
Which organelle converts the chemical energy stored in food into compounds that are more convenient for the cell to use?
chloroplast
Golgi apparatus
endoplasmic reticulum
mitochondrion
Which organelles are involved in energy conversion?
mitochondria and chloroplasts
mitochondria and ribosomes
smooth and rough endoplasmic reticulum
Golgi apparatus and chloroplasts
The primary function of the cell wall is to
support and protect the cell
store DNA
direct the activities of the cell
help the cell move
Unlike the cell membrane, the cell wall is
found in all organisms
composed of a lipped bilayer
selectively permeable
a rigid structure
The cell membrane contains channels and pumps that help move materials from one side to the other. What are these channels and pumps made of ?
carbohydrates
lipids
bilipids
proteins
An animal cell that is surrounded by fresh water will burst because the osmotic pressure causes
water to move into the cell
water to move out of the cell
solutes to move into the cell
solutes to move out of the cell
Which term describes the relatively constant internal physical conditions of an organism?
cell specialization
homeostasis
organ system
unicellularity
When during the cell cycle is a cell's DNA replicated?
G1 phase
G2 phase
S phase
M phase
During which phase of mitosis do the chromosomes line up along the middle of the dividing cell?
prophase
telophase
metaphase
anaphase
Which of the following represents the phases of mitosis in their proper sequence?
prophase, metaphase, anaphase, telophase
interphase, prophase, metaphase, anaphase, telophase
interphase, prophase, metaphase, telophase
prophase, anaphase, metaphase, telophase
What is the role of the spindle fibers during mitosis?
They help separate the chromosomes
They break down the nuclear membrane
They duplicate the DNA
They make the chromosomes visible
During normal mitotic cell division, a parent cell that has four chromosomes will produce two daughter cells, each containing
two chromosomes
four chromosomes
eight chromosomes
sixteen chromosomes
When designing an experiment, scientists will test a relationship between a "cause" and an "effect." The "effect" also represented by what the scientist measures and records, is known as the
dependent variable
constant
independent variable
control group
Cells often store materials like water, salts, proteins and carbohydrates in sac-like structures called
Chloroplasts
Lysosomes
Mitochondria
Vacuoles
If an animal cell were placed in a solution of salt water taken from the ocean, what would happen to the cell?
The cell would swell because the water solution is hypotonic
The cell would swell because the water solution is hypertonic
The cell would shrivel because the water solution is hypotonic
The cell would shrivel because the water solution is hypertonic
Substances known to produce or promote cancer are called
carcinogens
kinases
cyclins
malignancies
The three particles that make up an atom:
protons, neutrons, and isotopes
neutrons, isotopes, and electrons
positives, negatives, and neutrals
protons, electrons, and neutrons
Which phrase best describes an exothermic chemical reaction?
Does not absorb any energy
Forms products with higher bond energy than reactants
Is in a state of equilibrium
Releases more energy than it absorbs
Identify the products in this reaction: 6H2O + 6 CO2 > C6H12O6 + 6O2
6 H2O and 6 CO2
6CO2 and C6H12O6
6 H2O, C6H12O6 an d6 O2
C6H12O6 and 6O2
Chemical reactions that absorb more energy than they release are considered to be __________________.
exothermic
catalyzed
endothermic
anabolic
The activation energy needed for a chemical reaction is decreased by the presence of a _______________.
catalyse
reactant
product
substrate
If the activation energy of a biochemical reaction is lowered, then
the reaction will happen faster
the reaction will happen more slowly
more energy will need to be absorbed
the rate of the reaction will be unaffected
The molecule that an enzyme binds to is known as its _________________.
substrate
monomer
polymer
complimentary base
Reactants bind to enzymes at the _____________.
substrate
product
activation energy
active site
