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WorksheetsMidterm Review #1
Total questions: 25
Worksheet time: 13mins
If a cell is placed in a solution and it neither shrinks nor swells, the solution is said to be
hypotonic
isotonic
hypertonic
none of these
Living things maintain homeostasis most often through
positive feedback
negative feedback
controlled feedback
neither of these
Which of the following is the best definition of an hypothesis?
A possible solution to a problem that can be tested
An educated guess
A possible solution to a problem that cannot be tested
A solution that is researched on the internet
Which factor(s) affects the ability of an enzyme to catalyze a reaction?
change in temperature
change in pH
change in concentration
none of these
The ability for an organism to maintain an internal balance is called
homeothermy
homeopathy
homeostasis
homeostereo
What is the name of this molecule?
glucose
glycerol
ATP
NADH
When the last phosphate-phosphate bond is broken in ATP,
ATP remains unchanged
ADP is formed and energy is absorbed
ATP turns into glucose
ADP is formed and energy is released
The action or process of observing something or someone carefully or in order to gain information is called
hypothesis testing
experimenting
theorizing
observation
A phospholipid is a special lipid that
forms a lipid bilayer of a cell membrane
contains a phosphate group
has a polar "head" and nonpolar "tail"
none of these
Cellular respiration is to carbon dioxide as
oxygen is to carbon dioxide
photosynthesis is to oxygen
photosynthesis is to carbon dioxide
cellular respiration is to glucose
Which of the following statements is true?
A theory is always true
A theory is the problem to be solved
A theory is tested by an uncontrolled experiment
A theory may be revised or replaced
Glycolysis is a universal process in all living things that takes place in the
matrix of mitochondria
cytoplasm of a cell
nucleus of a cell
stroma of a chloroplast
The largest biological system on Earth, combining all living things, is the
population
ecosystem
community
biosphere
Equilibrium is attained when molecules move across a membrane in both directions equally and the concentration
is higher on one side than the other
is lower on one side than the other
is the same on both sides of the membrane
becomes zero
Cellular respiration ___________ energy while photosynthesis ____________ energy.
absorbs; releases
destroys; creates
releases; absorbs
none of these
A network of continuous tubules in a eukaryotic cell, which may or may not contain ribosomes, is called the
endoplasmic reticulum
nucleus
mitochondria
golgi apparatus
A complex of vesicles and folded membranes within the cytoplasm of most eukaryotic cells, involved in secretion and intracellular transport, is the
nucleus
ribosome
mitochondria
Golgi apparatus
In eukaryotic cells, chromosomes are found in the
nucleus
endoplasmic reticulum
ribosomes
vesicles
Mitochondria are organelles in a cell that
transports proteins
packages proteins
produces glucose
produces ATP
Heterotrophs must obtain energy from
breaking down food molecules
cellular respiration
organic compounds
all of the above
If the temperature decreases, the rate of photosynthesis may
increase
decrease
not be affected
none of these
Which of the following uses energy to transport materials into or out of the cell?
osmosis
facilitated diffusion
diffusion
sodium-potassium pump
Energy from the sun flows through the living world when
plants eat animals
animals eat plants
plants eat other plants
all of the these
Which of the following pH solutions is acidic?
pH equal to 7
pH greater than 7
pH less than 7
what is pH?
Scientists test hypotheses by manipulating
one variable at a time
all variables at the same time
the control group
all of these
