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WorksheetsQuizizz Week #7
Total questions: 25
Worksheet time: 26mins
Most of the reactions by which energy from carbohydrates is released for use by the cell take place within the
mitochondria
ribosomes
nuclei
vacuoles
Substance X directly supplies energy for various life functions, as shown in the diagram below. Which substance is represented by X in the diagram?
ATP
glucose
DNA
starch
According to the graph, which statement is true concerning the growth of the plants?
The plants in the pot with only 5 plants grew to be an average of 40 cm tall in 30 days.
The plants in the pot with only 10 plants grew to be an average of 30 cm tall in 20 days.
The plants in the pot with 15 plants grew an average of 20 cm taller after a period of 10 days.
The plants in the pot with 20 plants grew an average of 20 cm taller after a period of 40 days.
The dependent variable for this experiment was
the number of plants per pot
time in days
average plant growth
the amount of water per pot
A small lizard spends the morning hours lying in the sunlight until its body temperature rises. Later on in the day, the lizard rests in a shady area until its body temperature cools. This type of behavior is important to
maintain homeostasis
detect variations
attract mates
obtain nutrients
The diagram represents
cellular differentiation
dynamic equilibrium
gene interaction
biological evolution
An experiment is carried out to determine how different pH values of soil will affect the growth of tomato plants. In this experiment, the dependent variable could be the
height of the tomato plants
pH of the soil
specific variety of tomato plants used
pH of enzymes in tomato leaf cells
The type of organic molecule that is being synthesized is
DNA
starch
protein
fat
Which statement is an accurate observation that can be made based on this trail of footprints?
The individuals were running from a predator.
The volcano was about to erupt again.
One individual was much taller than the other.
One individual had larger feet than the other
Since the early 1990s, proton pump inhibitors (PPIs) have been widely used to treat acid refl ux disease. Although clinical tests in the 1980s deemed PPIs to be safe for humans, in 2012 the FDA announced warnings that long-term use of PPIs could increase the risk of bone fractures, kidney disease, and some intestinal infections.
Which statement best explains why the safety of PPIs is now in question when clinical experiments in the 1980s provided evidence that they were safe?
Researchers have been able to collect more data than were available in the 1980s.
Fewer people had acid reflux in the 1980s compared to today.
The medication containing PPIs has changed since the 1980s when tests were done.
The original experiments in the 1980s used only test animals and did not use human subjects.
One coach of an Olympic rowing team makes his athletes warm up by doing 30 minutes of stretching and jogging in place before practicing each day. Another coach suggests that resting before practicing will result in better performance by her team. They decide to conduct an experiment to see which practice is correct. One team rests before practice, the other team warms up for thirty minutes, and they then record the time that it takes each team to row a specific distance.
Identify the dependent variable in this experiment.
Type of Exercise
Amount of Rest
Amount of Time to Row a Distance
Number of Athletes
A student squeezes a clothespin 82 times in a minute. Then, using the same hand and the same clothespin, he squeezes the clothespin 68 times in a minute.
State one biological reason for the decrease in the number of squeezes during the second trial.
The student was not strong
Waste Build Up in the Cells
Too Much Oxygen Being Delivered to the Cells
Waste being taken away at a quick rate
During rest, an adult’s heart rate averages 60-100 beats per minute. When exercising, an adult’s heart rate may increase to 100-170 beats per minute. State one reason why the heart rate increased during exercise.
Heart Rate increases to deliver Carbon Dioxide to the Muscle Cells at a faster rate
Heart Rate increases to deliver Oxygen to the Muscle Cells at a faster rate
Muscle cells need more Carbon Dioxide to create more ATP
Heart rate will increase with exercise
What was the student’s resting pulse rate in beats per minute?
160
105
80
70
Students did an experiment comparing the activity of four different enzymes, A, B, C, and D. The results are represented in the graph below
A valid conclusion based on the information in the graph is that
the pH of some enzymes changes as the temperature changes
enzymes change color in proportion to the rate of activity
a difference in the pH of an environment changes enzyme activity
enzyme activity causes acids to change into bases over time
Which statement best describes van Leeuwenhoek’s work?
His observations alone provided enough information to form modern biological theories.
The microscopes he made were used by all scientists and have remained unchanged over the years.
Knowledge gained by his work has led to the improvement and development of modern scientific concepts.
Explanations of the microscopic world today are solely based on his observations and conclusions.
Which statement best describes these two molecules?
Sugar molecules are inorganic and fat molecules are organic.
Sugar molecules are organic and fat molecules are inorganic.
Energy for life processes can be stored within the chemical bonds of both molecules.
Energy for life processes can be stored within the chemical bonds of sugar molecules, only.
In the lab activity Making Connections, an experiment was designed to test the effect of exercise on the ability to squeeze a clothespin. The number of times the clothespin was squeezed served as the
independent variable
hypothesis
dependent variable
control
w. If the student needs to collect an average of thirteen seeds to survive, how many seeds must he pick up in round 3? Record your answer in the space provided in the table below.
A student is viewing a plant stem cross section using a compound light microscope.
What parts of the microscope should the student use to bring the image into focus?
A and F
C and D
B and E
D and F
Label The parts of the microscope
Arm
Coarse Adj.
Eyepiece
Objective Lens
Fine Adj.
Light
During a laboratory activity, students ran in place for three minutes. Students then complained of muscle fatigue in their legs. State one biological reason why the students experienced muscle fatigue after exercising.
There was not enough (a) present in the muscle cells
In this experiment, the purpose of using a disc treated with water is that it
serves as the conclusion for the experiment
is needed to provide additional moisture
serves as a control for the experiment
is needed as a standard safety procedure
A student designed an experiment to determine if air temperature had an effect on the rate of photosynthesis in corn plants.
Which tool is correctly paired with a procedure that could be used during this experiment?
an electronic balance to measure the volume of soil in which each corn plant is grown
a graduated cylinder to measure 30 mL of water for each plant daily
a metric ruler to determine the mass of each plant each week
a Celsius thermometer to determine the pH of the soil
The graph shows the number of animals in a population throughout the course of a year. The population migrated into the area at the beginning of 2011.
The approximate number of animals that were found in June 2012 was most likely
16
76
26
86
