WorksheetsUnit 9: Day 4
Total questions: 27
Worksheet time: 39mins
Name
Class
Date
1.
Bacteria are
a)
unicellular and prokaryotic
b)
unicellular and eukaryotic
c)
made up of no cells
d)
multicellular and prokaryotic
2.
viruses are
a)
made up of no cells
b)
prokaryotic and unicellular
c)
multicellular or unicellular
d)
eukaryotic and unicellular
3.
prokaryotic means
a)
no nucleus
b)
has a nucleus
c)
no ribosomes
d)
has a mitochondria
4.
bacteria reproduces using
a)
binary fission
b)
mitosis
c)
sexual reproduction
d)
splitting
5.
a type of reproduction that does not involve egg and sperm
a)
asexual
b)
sexual
c)
meiosis
6.
Bacteria divides
a)
quickly
b)
slowly
7.
A unicellular organism that does not have a nucleus
a)
fungus
b)
bacteria
c)
biome
d)
virus
8.
Evolution is
a)
change in a population over many generations
b)
New organisms are born
c)
sudden change in population
d)
gradual change in environment
9.
Which of the following is NOT part of the process of natural selection?
a)
Variation
b)
Uneven survival
c)
Uneven height
d)
Uneven reproduction
10.
Mutation is...
a)
caused by the choices an organism makes
b)
random
c)
always a good thing
d)
always a bad thing
11.
A mutation caused a cat's claws to be longer than normal - it can hunt better now. The mutation will most likely...
a)
will NOT be passed on to the next generation
b)
will NOT have any survival value
c)
will occur in a different population
d)
will be passed on to the next generation
12.
The disappearance of a species.
a)
Evolution
b)
Extinction
c)
Migration
d)
Mutation
13.
Which best describes fossils?
a)
They are the preserved remains or evidence of ancient living things
b)
They are the preserved remains or evidence of ancient living and nonliving things
c)
They are the preserved bones of ancient animals
d)
They are impressions of plant leaves in ancient rocks
14.
Embryology refers to
a)
differences amongst the embryos of offsprings
b)
similarities amongst the embryos of animals
c)
how an embryo is formed
d)
the early stages in the life cycle of embryos
15.
Some organisms that share a common ancestor have features that have different functions, but similar structures. These are known as
a)
vestigial structures
b)
analogous structures
c)
homologous structures
d)
fossil structures
16.
The forelimbs of vertebrates, like the ones pictured here, are similar in terms of number of bones and the orientation of bones. Which best describes how comparing homologous structures provides evidence of evolution?
a)
The genes for the body plan and forelimb layout were present in a common ancestral species vertebrates share, thus passed onto all vertebrates.
b)
Similar anatomical structures show how animals adapt to changing environments
c)
Homologous structures show that different species evolve at different rates
d)
Homologous structures don’t actually provide evidence for evolution
17.
Which disease is not caused by bacteria?
a)
Strep throat
b)
Pneumonia
c)
Food poisoning
d)
Influenza (the Flu)
18.
Transgenic bacteria are currently used to produce _____.
a)
hexosaminidase A, phenylalanine, and insulin.
b)
human growth hormone, insulin, and clotting factor.
c)
PKU, insulin, interferon.
d)
human growth hormone, PKU, and interferon.
19.
A DNA molecule produced by combining DNA from different sources is known as ____.
a)
a mutant.
b)
a polyploid
c)
recombinant DNA.
d)
a hybrid.
20.
To produce transgenic bacteria that make insulin, which of the following steps did scientists have to take first?
a)
Transform bacteria with the recombinant plasmid.
b)
Use a restriction enzyme to cut out the insulin gene from human DNA.
c)
Insert the human insulin gene into a plasmid.
d)
Extract the insulin from the bacterial culture.
21.
Agriculture companies produce plants that have genetic modifications that give the plants desired traits, such as resistance to drought or pests. Which question would gather information about an ethical consideration of genetically modified plants?
a)
Will these plants cause pollinators to avoid large areas of land?
b)
Can the amount of excess food produced by these plants be calculated?
c)
Will these plants require more land to grow than an equal amount of non-genetically modified plants require?
d)
Can the genetic modifications of these plants be acquired by noxious (poisonous) plants?
22.
What is the circular piece of DNA found in bacteria called?
a)
homologous chromosome
b)
sister chromatid
c)
plasmid
d)
arabinose
23.
A cell that has not yet differentiated into a specialized cell
a)
germ cell
b)
somatic cell
c)
stem cell
d)
gamete
24.
Which would increase the likelihood of pesticide resistance?
a)
An insect has only one generation per year.
b)
Continual use of the same pesticides or pesticides from the same chemical class.
c)
Applying a pesticide that has little or no residual effect.
d)
Limiting the number of pesticide applications.
25.
The use of pesticides on crops has been a common farming practice for decades. What has been the greatest effect of natural selection through the use of pesticides on certain insect populations?
a)
Natural selection has been altered because the insects and their predators are killed.
b)
The rate of selection is increased because the pesticides do not kill the insects that are naturally resistant to it.
c)
The rate of selection has decreased because the pesticides kill only young insects.
d)
The pesticides have altered natural selection by causing the insect DNA to spontaneously mutate.
26.
A plant company only grew one type of watermelon plant. All of their watermelon plants died from the same disease. What was most likely true of the watermelon plant population?
a)
They had a lot of resistance to disease.
b)
They had a few plants that were resistant to the disease.
c)
They had too much variation in their genes.
d)
They had little variation in their genes.
27.
A researcher sprays a new pesticide on thousands of insects of the same species that live in a large field. A few of the insects survive. What can be concluded by the researcher?
a)
The species of insects will likely become resistant to the pesticide.
b)
The ideal interval between the first and second applications of the pesticide should be increased.
c)
The pesticide has no effect on the species.
d)
The concentration of the pesticide was too weak.
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