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WorksheetsSemester 1 Exam Review 20-21
Total questions: 50
Worksheet time: 25mins
Name
Class
Date
1.
Which organelle uses energy from sunlight to make sugar?
a)
mitochondria
b)
nucleus
c)
chloroplasts
d)
vacuoles
2.
Which of the following illustrates the correct ordering of trophic levels?
a)
decomposers-carnivores-autotrophs-herbivores
b)
herbivores-autotrophs-carnivores-decomposers
c)
producers-herbivores-carnivores-decomposers
d)
carnivores-producers-omnivores
3.
The transfer of energy from a lower trophic level to the next highest level is roughly
a)
1%
b)
10%
c)
100%
d)
1000%
4.
Which animal is the top predator?
a)
hawk
b)
lizard
c)
snake
d)
grass
5.
In the energy pyramid here, how much of the energy in each level gets lost as heat or used by the organism for survival?
a)
80%
b)
90%
c)
10%
d)
20%
6.
What is the water cycle?
a)
the 3 forms of water
b)
the movement of water on, above, or below the surface of the Earth
c)
when water melts
d)
when clouds form
7.
Photosynthesis
a)
absorbs CO2
b)
releases CO2
8.
Respiration
a)
absorbs CO2
b)
releases CO2
9.
Which is true of prokaryotic and eukaryotic cells?
a)
Prokaryotic cells are larger than eukaryotic cells.
b)
Eukaryotic cells do not have nuclei, and prokaryotic cells do have nuclei.
c)
Prokaryotic cells lack membrane-bound organelles, and eukaryotic cells contain membrane-bound organelles.
d)
Eukaryotic cells are simpler than prokaryotic cells.
10.
Eukaryotic cells store their genetic information(DNA) in __________.
a)
Chromosomes
b)
Centromeres
c)
karyotypes
d)
Proteins
11.
In the S stage of interphase_______________
a)
the cell grows
b)
the nucleus divides
c)
the cell membrane divides
d)
the DNA is replicated
12.
A human cell has 46 chromosomes before mitotic division. How many chromosomes will the daughter cells after mitosis.
a)
12
b)
23
c)
46
d)
92
13.
a)
Anaphase
b)
Cytokinesis
c)
Telophase
d)
Metaphase
14.
In mitosis, the two resulting cells are
a)
different from the starting cell and identical to each other.
b)
different from the starting cell and different from each other.
c)
identical to the starting cell and different from each other.
d)
identical to the starting cell and identical to each other.
15.
Which is true about active transport?
a)
It requires energy
b)
it does not require energy
c)
It moves substances down the concentration gradient
d)
it moves material from high to low concentration
16.
The main source of energy for all life comes from ____.
a)
the Earth
b)
the moon
c)
the sun
d)
the food we eat/make
17.
How can photosynthesis be related to cellular respiration?
a)
What's produced (made) by one is needed (the reactants) for the other
b)
They both produce the same products
c)
They both have the same reactants (need the same things)
d)
These 2 processes have nothing in common
18.
the principle that, among the range of inherited trait variations, those contributing to reproduction and survival will most likely be passed on to succeeding generations
a)
fitness
b)
natural selection
c)
evolution
19.
Charles Darwin’s observation that finches of different species on the Galápagos Islands have many similar physical characteristics supports the hypothesis that these finches
a)
have the ability to interbreed.
have the ability to interbreed.
have the ability to interbreed.
b)
acquired traits through use and disuse.
c)
all eat the same type of food.
d)
descended from a common ancestor.
20.
Even though a hawk and falcon are two different species of birds, they have similar beaks. What does that tell you about both birds?
a)
They have the same type of nests
b)
They live in the same trees
c)
They eat the same type of food.
d)
They are hybrid
21.
From studying fossils, scientists have developed a timeline of life on earth. What is that timeline called?
a)
The theory of evolution
b)
Natural selection
c)
The cell theory
d)
The fossil record
22.
Which of the following is the correct equation for PHOTOSYNTHESIS?
a)
CO2 + O2 + H2O --> Light+ Sugar
b)
O2 + light + H2O --> CO2 + Sugar
c)
CO2 + light + H2O --> O2 + Sugar
d)
CO2 + sugar + H2O --> O2 + light
23.
What does a food web represent?
a)
All connections of energy flow throughout all organisms in a habitat.
b)
The specific ways that mutualism is carried out.
c)
A single pathway or energy flow between organisms.
d)
How carnivores get their food.
24.
Which is NOT a process of the water cycle?
a)
precipitation
b)
freezing
c)
transpiration
d)
evaporation
25.
What is the only process that removes carbon from the atmosphere?
a)
combustion
b)
cellular respiration
c)
photosynthesis
d)
decomposition
26.
Which of the following is known as the "sedimentary" cycle because its reservoir is sedimentary rock?
a)
Sulfur cycle
b)
Nitrogen cycle
c)
Phosphorus cycle
d)
Carbon cycle
27.
Identify the cycle pictured.
a)
The Water cycle
b)
The Carbon cycle
c)
The Nitrogen cycle
d)
The Phosphorus cycle
28.
How does carbon in a grass plant get into a lion?
a)
The lion eats the grass
b)
Carbon from grass doesn't end up in a lion.
c)
The carbon ends up in the food the lion eats.
d)
The lion breathes in carbon given out by the plant
29.
Photosynthesis
a)
absorbs CO2
b)
releases CO2
30.
In what process is Carbon transformed into chemical energy?
a)
Photosynthesis
b)
Respiration
c)
Primary Production
d)
Secondary Production
31.
What are the reactants of cellular respiration?
a)
glucose & carbon dioxide
b)
glucose & oxygen
c)
water & oxygen
d)
water & carbon dioxide
32.
What is the correct equation for cellular respiration?
a)
6O2 + C6H12O6 -> 6CO2 + 6H2O + Energy
b)
6O2 + C6H12O6 + Energy -> 6CO2 + 6H2O
c)
6CO2 + 6H2O -> 6O2 + C6H12O6 + Energy
d)
6CO2 + 6H2O + Energy -> 6O2 + C6H12O6
33.
What type of respiration requires oxygen?
a)
Aerobic
b)
Anaerobic
34.
Hypertonic solutions
a)
make cells shrink
b)
make cells swell
35.
Hypotonic solutions
a)
make cells shrink
b)
make cells swell
36.
Which statement best describes the cell membrane?
a)
The protective outer layer that controls what enters and leaves the cell.
b)
Stores information on DNA molecules / Directs and controls the activities of the cell.
c)
A folded membrane that moves materials around inside cells / Also acts as the site of manufacturing materials needed by the cell.
d)
The smallest organelle with a huge job / Makes proteins, which are the building blocks of the body.
37.
CROSSING OVER TAKES PLACE DURING
a)
PROPHASE II
b)
PROPHASE I
c)
INTERPHASE
d)
METAPHASE I
38.
A human usually has ______ chromosomes in their body cells.
a)
6
b)
22
c)
4
d)
46
39.
What is one reason why we need meiosis?
a)
To double the number of chromosomes going into sex cells
b)
To halve the number of chromosomes going into sex cells
c)
To triple the number of chromosomes going into sex cells
d)
To not change the number of chromosomes going into sex cells
40.
What type of succession is shown going from figure A to figure B?
a)
primary succession
b)
ecological succession
c)
secondary succession
d)
intermediate species
41.
What is the role of the pioneer species in Primary Succession?
a)
To kill any remaining organisms from before the disturbance
b)
To break down rock and rebuild soil
c)
To provide food for large animals
d)
To put fresh oxygen into the air
42.
What is the order of succession shown in this figure?
a)
A, B, C, D
b)
B, A, D, C
c)
C, D, A, B
d)
D, A, B, C
43.
A massive tornado
a)
density dependent limiting factor
b)
density independent limiting factor
44.
which statement sounds accurate based on the graph data.
a)
The zebra and lions do not affect each other
b)
when lions population increases, so does the zebra population
c)
When the zebra population increases, it causes the lion population to also increase
d)
when zebra populations go down, the zebra population goes up.
45.
According to the graph, What is causing the deer population to decrease
a)
They Got sick
b)
The wolf population is decreasing
c)
The wolf population increased
d)
Nothing it's a coincidence
46.
In a forest ecosystem, which of the following is the best example of a limiting factor for a rabbit population?
a)
Squirrel Population
b)
Sunlight
c)
Grass available
47.
All of the offspring of an organism have the same genetic material, which is identical to the parent organism. From this, we can conclude that this organism -
a)
makes its own food
b)
is unicellular
c)
live in a marine habitat
d)
reproduces asexually
48.
What is an advantage of sexual reproduction?
a)
Allows genetic variation
b)
Only needs one parent
c)
Happens very quickly
d)
Offspring are exact copies of parent
49.
In asexual reproduction, all of the offspring are:
a)
Physically Identical
b)
Genetically Identical
c)
Physically and Genetically Identical
d)
Not Identical
50.
If an environment suddenly changes, which type of reproduction would be most beneficial? Why?
a)
Asexual, because asexual organisms always have variation within species.
b)
Sexual, because sexual organisms have variation within species.
c)
Both Asexual and Sexual reproduction would be beneficial, because they both have variation within species.
d)
Asexual, because asexual organisms have no variation, so they can adapt to a changing environment.
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