WorksheetsFORM A Biology 1 Final Exam
Total questions: 25
Worksheet time: 25mins
Which of the following is an observation?
You propose that a cold front is approaching.
You record the air temperature every day for a week.
You hypothesize that the temperature will increase tomorrow.
You conclude that the season is changing.
Which is an inference?
You measure a plant’s height every day for a week.
You give a plant the same amount of water every day.
Every day for a week, you collect data on a plant’s movement.
After watching a plant for a week, you determine it needs more sunlight.
Which of the following are likely topics in a biology course?
Why does the Texas horned lizard squirt blood out of its eyes?
How is a banded pipefish able to hide in its environment of seaweeds?
What chemicals cause plant stems to lengthen or flowers to bloom?
All of these.
When paper burns in a fire, what is one reactant?
fire
water
oxygen
carbon dioxide
When an iron nail rusts, what is one product?
iron oxide
iron
oxygen
water
How does an enzyme influence a biological reaction?
It increases the net energy difference between reactants and products.
It decreases the activation energy necessary to initiate the chemical change.
It increases the kinetic energy of reactants, thereby increasing their tendency to collide.
It decreases the kinetic energy of reactants, enabling them to undergo chemical change more easily.
A single covalent bond forms when two atoms do which of these?
when they share two electrons
when they share one electron
when one gives an electron to the other
when one gives two electrons to the other
Which is present only in eukaryotic cells?
DNA
chromosomes
cell membrane
nucleus
Which organelle converts sugars into energy?
lysosome
mitochondria
nucleus
ribosome
At what point in the process of diffusion is dynamic equilibrium reached?
when there is continuous movement but no change
when the rate of change in the solution slows by one half
when the molecules are mixed and stop moving
when the movement of the molecules stops being random
A plant cell is placed in a hypotonic solution. What will happen to the plant cell?
It will stay the same.
It will shrink.
It will swell.
It will wilt.
Infer why chloroplasts are found mostly in the leaves of plants.
The large surface area of leaves allows for maximum light absorption.
The waxy coating on the surface of leaves helps prevent evaporation.
Chlorophyll interferes with the xylem and phloem in the stems and trunks of plants.
The large surface area of leaves allows for contact with oxygen.
If yellow, red, and orange pigments exist in the leaves of trees, why are leaves green except for in the autumn?
None of the responses are correct.
Chlorophyll molecules are the largest of the all pigment molecules.
Chlorophyll is the most abundant of all the pigments.
Green is the color of the spectrum most easily seen by humans.
What is a byproduct (waste) of photosynthesis?
oxygen
nitrogen
carbon dioxide
carbon monoxide
Where are the pigments in a plant found?
cell wall
stroma
thylakoid membrane
grana
By the end of prophase, each of the following has occurred EXCEPT ____.
tighter coiling of the chromosomes
breaking down of the nuclear envelope
lining up of chromosomes in the cell
disappearing of the nucleolus
Why is the synthesis stage called this?
because DNA synthesis is taking place
because protein synthesis is taking place
because it combines several smaller stages into one
because the chromosomes come together
The cell cycle is regulated by
enzymes
cyclins
hormones
sugars
Some cancers have a genetic component to them, if a parent has a cancer the children are more likely than the average population to develop the cancer. Why might this be?
Cancers are often recessive traits and require alleles from both parents.
Parents and children are often exposed to similar environmental factors.
Cancers are inherited but remain dormant until a certain age.
Cancers require more than one mutation to occur.
Which is the best description of the events that take place during anaphase II?
Homologous pairs are separated and pulled to opposite sides of the cell.
Homologous chromosomes line up along the equator.
The replicated chromosomes become visible.
Sister chromatids are separated and pulled to opposite sides of the cell.
A true-breeding tall pea plant is crossed with a true-breeding short pea plant, and all the offspring are tall. What is the most likely genotype of the offspring assuming a single-gene trait?
Tt
TT
tt
TT or tt
A phenotype that results from a dominant allele must have at least _____ dominant allele(s) present in the parent(s).
4
3
2
1
Interactions of multiple pairs of genes is known as:
Polygenic
Monogenic
Heterozygous
Homozygous
A man with a normal A blood type (IAiO) marries a woman normal for blood type B (IBiO). The chance that their first child will have type O blood is ____.
0%
25%
50%
75%
What part of the chromosome might be involved with processes such as aging and cancer?
telophase
karyotype
non-disjunction
telomere
