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WorksheetsSemester Final Review
Total questions: 86
Worksheet time: 1hrs 5mins
What does the prefix bio- refer to?
life
chemicals
Earth
Space
What contains information (the codes) for growth and development?
DNA
Atoms
Organs
Organelles
What are the instructions for traits that are passed from parents to offspring?
genes
homeostasis
stroma
molecules
What word means keep things the same?
homeostasis
stimuli
concentration
cellulose
Cells are the
smallest units that can carry on all of the functions of life.
same as atoms.
smallest thing in the universe.
things that make up everything on Earth.
What needs energy, reproduces, and is composed of cells?
living things
atoms
nonliving things
molecules
________ compose all organisms.
Cells
Starch
CO2
Plants
Homeostasis is how all living things
maintain a balance with their environment.
grow bigger.
develop their cells.
acquire energy.
How do you test a hypothesis?
Conduct an experiment
Make inferences
Look up the answer
Communicate with other scientists.
Which of these is a testable possible explanation of an observation?
Hypothesis
Answer
Statement
Experiment
Protons are _________, Neutrons are ________, electrons are ________.
positive; neutral; negative
negative; neutral; positive
negative; positive; neutral
neutral; positive; negative
Protons, neutrons, and electrons make up
atoms
space
nuclei
negativity
Elements are composed of ______ type(s) of atoms.
one
many
multiple
several
Where do electrons exist in the atom?
in orbits around the nucleus
in the nucleus
outside the atom
where the positive charge is
If matter contains particles that are not tightly linked together, the substance is a
gas
liquid
solid
all choices are correct
Covalent bonds...
share electrons between atoms.
are caused by charge.
only involve hydrogen.
all choices are correct
Sharing of electrons results in
compounds.
ions.
gametes.
atoms.
When an atom gains or loses an electron, it becomes...
charged.
neutral.
molecular.
solid.
Which of these speeds up reactions?
enzymes
hydronium ions
ions
gases
The ratio of solute to solvent in a solution is the...
concentration.
solventity
solubility
alkalinity
Hydroxide(OH-) and hydrogen(H+) ions determine the ________ of a solution.
pH
thickness
color
polarity
If a solution has more hydroxide (OH-) ions than it is considered to be
a base.
alkaline.
both choices are correct.
neither choice is correct.
Solutions with a pH ______ 7 are considered to be bases, or alkaline.
above
equal to
below
no choice is correct.
Solutions with a pH ______ 7 are considered to be acidic.
above
equal to
below
no choice is correct.
Polar molecules...
have partial charges on each side.
are made of only protons.
are bigger than regular molecules.
are only found to the north and the south.
This element is found in all organic compounds.
Carbon
Oxygen
Nitrogen
Calcium
Sugars, such as sucrose and glucose, are considered to be
carbohydrates.
proteins.
lipids.
inorganic.
Glycogen is how animals store...
glucose.
sucrose.
cellulose.
lipids.
Saccharides are considered to be...
lipids.
carbohydrates.
proteins.
nucleic acids.
T/F - Steroids are considered to carbohydrates.
False
True
Nucleotides are made out of...
amino acids.
glycogen.
disaccharides.
proteins.
What are proteins made out of?
amino acids
carbohydrates
CH2 Chains
Nucleic Acids
Starch is an example of a...
carbohydrate
protein
amino acid
fatty acid
Carbohydrate are to monosaccharides as lipids are to...
Fatty Acids
Nucleotides
Amino Acids
Sugars
DNA and RNA are made out of...
Nucleic Acids
Amino Acids
Fatty Acids
Fluorescent Acids
When the bond between two phosphate groups in ATP is broken, what happens?
Energy is released.
Energy is absorbed.
More stuff bonds to ATP.
All of the above.
Enzymes cause chemicals reactions...
to speed up.
to slow down.
to stay the same.
no choices are correct
The smallest units of life are...
cells.
mitochondria
cytoplasm.
Golgi apparatus.
When the volume of a cell increases, its surface area
increases at the same rate.
remains the same.
increases at a faster rate.
increases at a slower rate.
Surface area is an important factor in limiting cell growth because
the cell can burst if the membrane becomes too large.
materials cannot enter the cell if the surface is too large.
the may become too large to take in enough food and to remove enough wastes.
waste products cannot leave the cell if the cell is too small.
What limits the size that a cell can grow?
surface area
location.
structure
function
Prokaryotes do not have...
DNA.
a cell membrane.
cytoplasm.
a Golgi apparatus.
Bacterium is an example of a...
prokaryotic cell.
eukaryotic cell.
plant cell.
no choices are correct.
Which of these does not have a nucleus?
prokaryotic cell
eukaryotic cell
plant cell
animal cell
What do eukaryotic cells contain?
nucleus
membrane-bound organelles
DNA
cytoplasm
all choices are correct
What is the thin coverings that surround cells?
plasma membrane
Golgi Apparatus
Vacuole
Nucleus
What regulates what enters and exits the cell?
plasma membrane
nucleus
DNA
endoplasmic reticulum
Mitochondria is more likely to be high in number in muscle cells, which have a high level of....
activity.
blood.
fiber.
fat.
Which of these is found in both plant and animal cells?
plasma membrane
cell wall
chloroplasts
chlorophyl
Chloroplasts are the organelles responsible for carrying out...
photosynthesis.
cellular respiration.
mitochondria production
ATP Synthesis
Chlorophyll is found in the...
chloroplasts.
mitochondria.
vacuole.
cell wall.
What organelle is found in a large number in plants, and stores water, waste, and nutrients?
Vacuoles
Chloroplast
Golgi Apparatus
Endoplasmic Reticulum
Which of these put the order of organization of structure in living things in the correct order of most complex to simplest?
organ systems, organs, tissues, cells
tissues, organ systems, organs, cells
cells, organs, tissues, organ systems
organ systems, cells, tissues, organs
Diffusion goes from....
high concentration to low.
low concentration to high.
equilibrium to high.
equilibrium to low.
Diffusion takes place in...
both choices are correct.
liquids.
gases.
neither choice is correct.
When diffusion or osmosis stops happening because the number of molecules on each side have reached a balance is called...
equilibrium.
homeostasis.
concentration.
solubility.
Osmosis is the passage of _____ into and out of a cell.
Water
Oxygen
Carbon Dioxide
Soda
What process is shown here?
Diffusion
Osmosis
Homeostasis
Concentration
If a cell is placed in a hypertonic solution, the cell will...
lose turgor pressure.
gain turgor pressure.
experience no change.
grow larger.
Which of these processes expends energy?
Osmosis
Endocytosis
Diffusion
Passive Transport
What happens to the cell if you place it in a hypotonic solution?
the cell grows
the cell shrinkens
the cell shrivels
equilibrium was reached
Where do heterotrophs get their energy?
other organisms
directly from the sun
strictly from plants in all cases
Strictly from other bacteria in all cases
What is it that absorbs light energy during photosynthesis?
chlorophyll
vacuoles
electron transport chain
mitochondria
Carbon dioxide supplies _______ during photosynthesis.
oxygen
nitrogen
carbon
ATP
Photosynthesis produces...
glucose.
oxygen.
carbon dioxide.
glucose and oxygen.
Where do cells get most of their energy from?
DNA
ATP
NADPH
NADP+
Why does DNA wrap around proteins?
To make sure it fits into a daughter cell
So that enzymes can act on the DNA
So it doesn't get released by a vacuole.
So the cell can go through binary fission.
What are the duplicate halves of chromosomes?
chromatids
centromeres
chromatins
chroma
How is energy stored in cells?
ATP
ADP
water
NADPH
When animal cells break down food molecules to release stored energy it is called...
cellular respiration.
photosynthesis.
hydrolysis.
replication.
Why does DNA wrap tightly into chromosomes?
So more genes are expressed.
So DNA can be replicated.
So chromosomes can form 23 chromatin.
So it can fit into a daughter cell.
What are the duplicate halves of a chromosome?
chromatid
chromatin
chromosome
autosome
How many autosomes does a diploid human cell have?
44
2
46
23
How many sex chromosomes does a diploid human cell have?
44
2
46
23
How many pairs chromosomes does a diploid human cell have?
44
2
46
23
What is the snapshot of the chromosomes in a cell that tells you the amount of chromosomes in a cell?
karyotype
molecular photo
genetotype
diplotype
What type of cell has chromosomes found in pairs, and is denoted as 2n?
diploid
haploid
multoid
chromatid
Zygotes are...
diploid.
haploid.
multicellular.
All choices are correct.
Gametes are...
haploid.
diploid.
multicellular.
No choices are correct.
How many chromosomes are in a human gamete?
23
46
2
92
If the haploid number of chromosomes for an organism is 18, what is the diploid number of chromosomes?
36
9
72
16
How do bacteria reproduce?
binary fission
sexual reproduction
mitosis
meiosis
Metaphase is when chromosomes...
line up in the middle of a cell.
split apart.
duplicate their DNA.
cross over their genes.
A cell has 64 chromosomes in a diploid cell. It undergoes cell division (mitosis and cytokinesis). How many chromosomes are now in each of the daughter cells?
64
32
128
23
This type of organism splits by forming a new cell wall.
plant
animal
bacteria
no choices are correct
What is the process called where a cell splits its nucleus into two parts?
mitosis
meiosis
binary fission
cytokinesis
