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WorksheetsDepartment Biology Test Review
Total questions: 39
Worksheet time: 20mins
The process by which cells and organisms maintain stable internal conditions like body temperature, heart rate and blood sugar levels is called
homeostasis
osmosis
respiration
photosynthesis
What causes a cell to become a cancer cell?
environmental risk factors
mutations
loss of genes for proteins that control movement through the cell cycle
all of the above
Mitotic cell division is for
replacing dead cells
growing into a multicellular organism
sexual reproduction
both replacing dead cells and growing into a multicellular organism
When looking at a sample of human tissue, cancer is suspected if
There are too many cells in prophase, metaphase, anaphase and telophase.
There are very few cells in prophase, metaphase, anaphase and telophase.
Most of the cells are in interphase.
There are not many cells.
A cell with 60 chromosomes will undergo meiosis to produce gametes (sperm and egg) that have
60 chromosomes
30 chromosomes
120 chromosomes
no chromosomes
Two haploid gametes combine to form a
diploid zygote
another gamete
What is the correct order of events:
mitosis, fertilization, meiosis, differentiation
meiosis, fertilization, mitosis, differentiation
mitosis, pollination, meiosis, differentiation
differentiation, meiosis, mitosis, fertilization
What molecule containing 3 phosphates is used to do cell work and drive chemical reactions?
amino acids
DNA
ADP
ATP
The products of ____________________ are the reactants of ______________________.
photosynthesis, homeostasis
cell respiration, meiosis
photosynthesis, cell respiration
differentiation, photosynthesis
How do plants get proteins, lipids, carbohydrates and nucleic acids?
they consume them
from the soil
from glucose made in photosynthesis
from cell respiration
How many copies of each gene are in each diploid cell?
1
2
3
5
Chlorophyll is green and therefore
absorbs green light and uses it for photosynthesis
reflects green light and uses it for photosynthesis
absorbs green light but can't use it for photosynthesis
reflects green light, so it can't use it for photosynthesis
The gene for glucagon is on chromosome 2. Glucagon is a hormone that increases blood sugar levels. A patient has no ability to increase his blood sugar. What may be the cause?
normal glucagon alleles
a mutation in one glucagon allele
mutations in both glucagon alleles
too little insulin
In living things, energy _____________________ and matter___________________.
moves in one direction, is recycled
is recycled, moves in one direction
moves in one direction, doesn't move
doesn't move, moves in one direction
DNA is
a single flat molecule
a single helix
a double flat molecule
a double helix
What type of protein speeds up chemical reactions by lowering the amount of energy needed to get them started?
carbohydrate
enzyme
muscle
antibodies
Phospholipids are lipids with a glycerol, two fatty acids and a phosphate group that makes one end of the molecule polar. What cell structure is composed of phospholipids?
cell wall
cell membrane
ribosomes
cytoplasm
If the number of deer in the middle of a food web decreases what is likely to occur?
species that eat deer will increase
species that eat deer will decrease
species deer eat will decrease
nothing will change
When the number of producers increases in a food web, what is likely to occur?
no changes to other species
all other species will decrease
all other species will increase
only the species that eat the producers will increase
Sexual reproduction includes independent assortment and crossing over to introduce ________________ to the gametes. This makes the species stronger and better able to respond to environmental changes.
genetic variation
new chromosomes
new combinations of chromosomes
all of the above
Biological magnification of harmful toxins in a food chain results in the most damage to
producers
herbivores
primary consumers
top carnivores
Which food chain has the most energy available for the coyote?
corn-> locust -> raccoon-> coyote
corn-> raccoon-> coyote
corn-> coyote
The coyote gets the same amount of energy at the end of all of the food chains.
Where in a food web would you find carbon?
producers
consumers
decomposers
in all the organisms in the food web
Which organelles have lots of internal, folded membranes providing surface area for important chemical reactions to convert energy from one form to another?
mitochondria
chloroplast
ribosomes
mitochondria and chloroplasts
Pyramids of biomass get narrower with each rise in trophic level because
energy increases as you go up trophic levels
energy decreases as you go up trophic levels
energy is the same in all trophic levels
energy is random
Farming ________________ species diversity and __________________ ecosystem stability.
decreases, decreases
increases, increases
decreases, increases
increase, decreases
Humans get energy in the form of ATP by
eating food
digesting food
cell respiration
all of the above
When the number of predators decrease in a food web, the number of prey___________________, because they live longer and have more offspring.
stay the same
increase
decrease
Native species in an ecosystem are often outcompeted by
an invasive species
a new species introduced by humans
a new species to the ecosystem
all of the above
Planting more trees and plants
increases photosynthesis
reduces the burning of fossil fuels
decreases cell respiration
increases carbon dioxide
Decreasing carbon dioxide in the atmosphere
increases the greenhouse effect
warms the Earth
decreases the greenhouse effect
increases the severity of storms
Burning fossil fuels is not sustainable
because it leads to cooler temperatures
because it is a nonrenewable energy source
because it is a renewable energy source
but there are no other options
Which statement is true?
there is nothing you can do to prevent cancer
family history has control over your chances of getting cancer
both family history (genes) and your environmental risks determine your likelihood of getting cancer
know one knows why people get cancer
The following is the correct order of steps in the development of a trait in a cell
DNA, ribosome, protein, trait
protein, DNA, trait, ribosome
ribosome, protein, DNA, trait
trait, ribosome, DNA, protein
Lynx and hares are native to the arctic. Hares eat grasses and lynx eat hares. Global warming has lead to an invasion of Canadian rabbits into the Arctic. These rabbits eat grasses too, but lynx do not know how to hunt for them. What will happen to the population of hares and lynxes in the Arctic?
both will increase due to more food
Both will decrease due to less food
hares will decrease and lynx will increase
hares will increase and lynx will decrease
A mutation in a gene for an enzyme will cause a loss of function if
the shape of the enzyme is changed
the active site can no longer bind to reactants
an amino acid important for shape is changed
all of the above
When are chromosomes visible under a light microscope?
During mitosis
during interphase
during S phase
during G0
Which zone on Earth gets the most sunlight and biomes with the greatest biodiversity?
polar
temperate
tropic
desert
Multicellular organisms have many different cell types. Which of the following explains this best?
all cells have different genes
all cells have the same genes and use all of them to make protein
all cells have the same genes, but they don't use all of them to make protein
all cells have different genes, but they all make the same proteins
