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WorksheetsBiology Final Exam Practice
Total questions: 40
Worksheet time: 20mins
This process monitors body conditions and acts to return them to normal levels through feedback loops.
reproduction
meiosis
photosynthesis
homeostasis
A graph of two populations of organisms increase and decrease together over a period of many years. The ecological relationship between these two species is
competition
predator/prey
unclear
exponential
Which macromolecule is a double helix found in the nucleus of eukaryotic cells?
carbohydrates
DNA
lipids
proteins
Carbon dioxide and methane are gases that trap heat around the Earth and cause
the ozone hole to increase
an increase in cancer rates
the Greenhouse Effect
an increase in the polar ice caps
What causes differences in your phenotype?
Genes only
Environment only
Nothing
Both genes and your environment effect your phenotype
What happens to enzymes when placed at the wrong pH?
they denature and will not function
they fold up and function perfectly
they fold up correctly, but fail to function
they denature and begin to function correctly
All organisms have a cell membrane made out of
proteins only
phospholipids
carbohydrates
nucleic acid
Autotrophs ________________ and heterotrophs ______________.
make their own food by photosynthesis, eat for food
eat for food, make their own food by cell respiration
eat for food, make their own food by photosynthesis
make food by cell respiration, eat for food
Only bacteria can use this element from the air to make organic molecules
carbon
oxygen
nitrogen
hydrogen
What is responsible for reaching carrying capacity in a logistic growth curve?
unlimited resources
limited resources
too much available food
too much available space
The Endosymbiotic Theory explains the evolution of which organelles in the first eukaryotic cells?
ribosomes and cytoplasm
cytoplasm and nucleus
mitochondria and chloroplast
Cell membrane and ribosomes
Sexual reproduction using gametes made by meiosis introduces variation by
crossing over of chromosomes and independent assortment
DNA replication
mitosis
protein folding
In a cell with 2 pairs of chromosomes, how many haploid gametes can be made by meiosis?
1
2
4
8
Which part of a DNA molecule determines the mRNA and protein made?
sugar
bases
phosphate
amino acids
A mutation in mRNA that changes a codon for Cysteine into a stop codon would
lengthen the protein made
shorten the protein made
not effect the protein made
cause better folding of the protein
Which is true of mutations in a gene?
The always result in decreased fitness.
They always result in increased fitness.
They may cause changes in a protein.
They always cause changes in a protein.
Which is an example of incomplete dominance?
red and white flowers make red flowers
red and white flowers make white flowers
red and white flowers make pink flowers
red and white flowers make speckled flowers
DNA must be replicated before
mitosis and meiosis
mitosis only
meiosis only
cell respiration
The chances of having a female baby are
25%
50%
75%
100%
If horses live in an environment where they need to run away from predators, what will be true of the change in their legs over time?
their legs will stay the same
their legs will get weaker
their legs will get shorter
their legs will get longer
The process of making sperm and egg is _________________ and the process of making normal body cells is _________________.
meiosis, mitosis
mitosis, meiosis
fertilization, meiosis
mitosis, mitosis
If a cell has one copy of every chromosome, it is ______________ and if it has two copies of every chromosome, it is __________________.
a haploid gamete, diploid somatic cell
haploid somatic cell, diploid gamete
a diploid gamete, haploid somatic cell
a diploid somatic cell, haploid gamete
Two organisms are the same species if they
can no longer breed and make offspring
look similar
look different
can breed and make fertile offspring
The processes that convert a DNA base sequence into a protein are
replication and translation
transcription and translation
replication and translation
cell respiration and photosynthesis
Human activities that remove species from a habitat
increase diversity and decrease stability
decrease diversity and increase stability
increase diversity and stability
decrease diversity and stability
Photosynthesis takes energy from the sun and converts it into chemical bonds in
water
carbon dioxide
glucose
nitrogen
The reactants of ___________________ are carbon dioxide and water and the product are glucose and oxygen. The reactants of ______________________are glucose and oxygen and the products are carbon dioxide and water.
photosynthesis, cell respiration
cell respiration, photosynthesis
fermentation, glycolysis
glycolysis, fermentation
Two similar fossils are discovered in two separate layers in the Earth and paleontologists conclude that species A evolved from species B. What is probably true?
Species A was found in the layer above species B
Species B was found in the layer above species A
Both fossils were found in the same layer
The fossils are unrelated
When comparing amino acid or base sequences between species, the __________________ differences, the more closely related those species are.
more
less
On a cladogram, the most closely related species have the most ____________________ common ancestor.
recent
distant
different
abundant
Which blood types can have heterozygous genotypes?
A and O
B and O
A, B and AB
none of them
As you go up a food web, energy ___________________ and toxins ___________________.
decreases, decreases
increases, increases
increases, decreases
decreases, increases
When a new habitat becomes available, what occurs?
genetic equilibrium
convergent evolution
adaptive radiation
extinctions of species
What process transfers energy from the bonds in glucose to ATP for cell work?
photosynthesis
fermentation
cell respiration
mitosis
What cell types rarely divide by mitosis?
cancer cells
skin and blood cells
zygotes
bone, muscle and nerve cells
Which phase of the cell cycle is shorter in cancer cells?
interphase
mitosis
prophase, metaphase, anaphase and telophase
all of them
If two parents without a disease have a child with the disease, it must be
autosomal
sex linked
recessive
dominant
When analyzing a DNA fingerprint of a child, all of the bands of DNA are from
the mother
the father
either the mother or the father
both the mother and the father
When a predator in a food chain is removed, what happens to the organisms it eats?
increase
decrease
stay the same
can't be predicted
Herbivores eat
plants
animals
plants and animals
dead organic material
