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Worksheets1st Semester Final Review
Total questions: 20
Worksheet time: 13mins
Name
Class
Date
1.
Students are studying respiration in yeast. They pour a solution containing yeast into a flask and cover it with a balloon. The students hypothesize that if sugar is added to the solution, then the yeast will release energy and cause the balloon to expand. Which equipment should the students use to test their hypothesis and why?
a)
a stopwatch for measuring the time it takes the balloon to expand as oxygen is produced
b)
a balance for measuring the mass of the balloon as it fills with oxygen
c)
a thermometer for measuring the change in temperature before and after the sugar is added to the yeast
d)
a graduate cylinder for measuring the mass of carbon dioxide in the balloon
2.
The picture shows a cross section of a living structure. There are many different types of plant cells in the structure. Some cells are involved in photosynthesis and other are involved in the transport of materials. What is the correct classification for the living structure?
a)
tissue
b)
organ
c)
organism
d)
organ system
3.
The diagram above shows some of the stages in cellular respiration. Which of the following gives the stages in the correct order?
a)
glycolysis, electron transport system, Krebs cycle
b)
Krebs cycle, glycolysis, electron transport system
c)
electron transport system, Krebs cycle, glycolysis
d)
glycolysis, Krebs cycle, electron transport system
4.
A freshwater plant has an internal concentration of 1.2 g/ml. It is placed in a salt marsh that has a concentration of 12 g/ml. Which best predicts the direction water will move across the plant cell wall and the effect of the movement on the plant?
a)
water would move out of the plant's cells, causing the plant to wilt
b)
water would move into the plant's cells, causing the plant to wilt
c)
water would move out of the plant's cells, causing the plant to swell
d)
water would move into the plant's cells, causing the plant to swell
5.
An apple, once ripe, will give off a gas known as ethylene through its skin. When exposed to this gas near by apples begin to also ripen. The rest of the tree will ripen much like the effect of a wave. This would be an example of
a)
positive feedback loop
b)
negative feedback loop
c)
positive but then negative feedback loops
d)
negative but then positive feedback loops
6.
Blood pressure cannot get too high or too low. When it does a chemical signal is sent to the brain. If blood pressure is too low heart rate will increase. If blood pressure is too high then heart rate will decrease. This is an example of
a)
positive feedback loop
b)
negative feedback loop
c)
positive feedback followed by negative feedback
d)
negative feedback followed by positive feedback
7.
Which of the following would be organs of the nervous system?
a)
heart, brain, eyes, lungs
b)
brain, eyes, spinal cord, nerves
c)
brain, stomach, kidney, liver
d)
brain, spinal cord pancreas, bladder
8.
What would happen in the above picture?
a)
water would move from the left to the right
b)
water would move from the right to the left
c)
solute would move from the left to the right
d)
solute would move from the right to the left
9.
Which of the following would be an example of an isomer?
a)
Methane and Butane because they have the same structure but different chemical formulas
b)
butane and isobutane because they have the same number of carbon and hydrogen atoms but different structures
c)
Na+ and Cl- because their charges attract them to each other
d)
O2 and CO2 because they both contain oxygen
10.
This image shows how glucose and fructose combine to make sucrose (table sugar). What molecule is being created in the process?
a)
oxygen
b)
carbon dioxide
c)
water
d)
hydroxide
11.
The equation below is for cellular respiration.
C6H12O6 + 6O2 --> 6CO2 + 6H2O + ATP
Which statement below best describes what is happening.
C6H12O6 + 6O2 --> 6CO2 + 6H2O + ATP
Which statement below best describes what is happening.
a)
glucose and oxygen are broken down to help plants conduct photosynthesis
b)
as glucose and oxygen are broken down the energy in their bonds is used to create cell energy
c)
as glucose and oxygen are broken down the energy in their bonds is used to create more food
d)
the equation is not cellular respiration it is photosynthesis
12.
What is the main function of ribosomes?
a)
to make energy
b)
to make lysosomes
c)
to make proteins
d)
to make cytoplasm
13.
What is the main difference between eukaryotes and prokaryotes?
a)
eukaryotes have circular DNA and prokaryotes have enclosed DNA
b)
eukaryotes are simple and prokaryotes are complex
c)
eukaryotes have enclosed DNA inside a true nucleus and prokaryotes are circular DNA
d)
eukaryotes have no membrane bound organelles and prokaryotes have many membrane bound organelles
14.
What is the source of all energy?
a)
cellular respiration
b)
oxygen
c)
the sun
d)
glucose
15.
What are the products of photosynthesis?
a)
6O2 + C6H12O6
b)
6O2 + C6H12O6 + ATP
c)
6O2 + ATP
d)
6H2O + 6CO2 + ATP
16.
Cellular respiration takes place in the
a)
chloroplast
b)
nucleus
c)
ribosome
d)
mitochondria
17.
Equilibrium is reached when the concentration of solution is
a)
more outside the cell than inside
b)
less outside the cell than inside
c)
the same both inside and outside the cell
d)
equilibrium cannot be reached
18.
When an organism undergoes cellular respiration and the products are alcohol, carbon dioxide, and energy then the organism is doing
a)
aerobic respiration
b)
photosynthesis
c)
anaerobic respiration
d)
replication
19.
The equation below is photosynthesis:
6CO2 + 6H2O + sunlight --> C6H12O6 + 6O2
6CO2 + 6H2O + sunlight --> C6H12O6 + 6O2
a)
The left side represents the products and the right side the reactants
b)
The left side represents the reactants and the right side the products
c)
Both sides are the products
d)
Both sides are the reactants
20.
What is meant by moving down the concentration gradient?
a)
molecules move from an area of high concentration to an area of low concentration
b)
molecules move from an area of low concentration to an area of high concentration
c)
molecules only move up the concentration gradient
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