Biology Unit 1 Review
Match the following definitions with words below. There can only be 1 correct word per definition
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
type of data that uses specific numbers or amounts
comes after a hypothesis and is used to determine whether the hypothesis is correct
the study of life
a signal to which an organism responds
information gathered through observations
organized way of using evidence to learn about the natural world; scientific ____
a proposed scientific explanation that can be tested
the ability of organisms to change over time
variable that changes during an experiment
the maintaining of constant internal conditions or balance
______ Homeostasis
_______ Quantitative
______ Biology
______ Independent
______ Dependent
_______ Reasoning
______ Experiment
______ Evolution
______ Hypothesis
_______ Qualitative
______ Stimulus
______ Method
______ Theory
_______ Control
______ Constant
______ Experiment
List the characteristics of life and provide an example of each
Read the following scenario and answer the questions
After studying about recycling, members of the RY biology class investigated the effect of various recycled products on plant
growth. John’s lab group compared the effect of different aged grass compost on bean plants. Because decomposition is
necessary for release of nutrients, the group hypothesized that older grass compost would produce taller bean plants. Three flats
of bean plants (25 plants/flat) were grown for 5 days. The plants were then fertilized as follows: a) Flat A: 450g of 3 –month old
compost, b) Flat B: 450g of 6-month-old compost, and c) Flat C: 0g compost. The plants received the same amount of sunlight
and water each day. At the end of 30days the group recorded the height of the plants (cm).
Identify the hypothesis from the scenario:
Identify the Independent Variable (I.V):
Identify the Dependent Variable (D.V):
Qualitative Measurements:
Quantitative Measurements:
Identify the Control:
Identify the Constants:
Aloe vera and Planaria
Jackie read that Aloe vera promoted healing of burned tissue. She decided to investigate the effect of varying amounts of Aloe
vera on the regeneration of the worm planaria. Using a sterile scalpel she cut the planaria in half to obtain 10 parts (5 heads and
5 tails) for each experimental group. She applied concentrations of 0%, 10%, 20% and 30% Aloe vera to each groups. Fifteen
milliliters of the Aloe vera solution were applied. All planaria were maintained in a growth chamber with identical food,
temperature, and humidity. On Days 5, 10 and 15, Jackie observed the regeneration of the planaria parts and categorized
development as full, partial or none.
Identify the hypothesis from the scenario:
Identify the Independent Variable (I.V):
Identify the Dependent Variable (D.V):
Qualitative Measurements:
Quantitative Measurements:
Identify the Control:
Identify the Constants:
Susie wondered if the height of a hole punched in the side of quart-size milk carton would affect how far from the container a
liquid would spurt when the carton was full of liquid. She used 4 identical cartons and punched the same size hold in each. The
hole was placed at a different height on one side of each of the containers. The height of the holes varied in increments of 5 cm,
ranging from 5 cm to 20 cm from the base of the carton. She put her finger over the holes and filled the cartons to a height of
25cm with a liquid. When each carton was filled to the proper level, she placed the carton in the sink and removed her finger.
Sushi measured how far away from the carton’s base the liquid had squirted when it hit the bottom of the sink. Each carton was
identical, and the liquid was water for each trial.
Identify the hypothesis from the scenario:
Identify the Independent Variable (I.V):
Identify the Dependent Variable (D.V):
Qualitative Measurements:
Quantitative Measurements:
Identify the Control:
Identify the Constants:
Smithers thinks that a special juice will increase the productivity of workers. He creates two groups of 50
workers each and assigns each group the same task (in this case, they're supposed to staple a set of papers). Group A is given the
special juice to drink while they work. Group B is not given the special juice. After an hour, Smithers counts how many stacks of
papers each group has made. Group A made 1,587 stacks, Group B made 2,113 stacks.
Identify the hypothesis from the scenario:
Identify the Independent Variable (I.V):
Identify the Dependent Variable (D.V):
Qualitative Measurements:
Quantitative Measurements:
Identify the Control:
Identify the Constants:
Homer notices that his shower is covered in a strange green slime. His friend Barney tells him that coconut juice
will get rid of the green slime. Homer decides to check this this out by spraying half of the shower with coconut juice. He sprays
the other half of the shower with water. After 3 days of "treatment" there is no change in the appearance of the green slime on
either side of the shower.
Identify the hypothesis from the scenario:
Identify the Independent Variable (I.V):
Identify the Dependent Variable (D.V):
Qualitative Measurements:
Quantitative Measurements:
Identify the Control:
Identify the Constants:
Bart believes that mice exposed to radiowaves will become extra strong (maybe he's been reading too much
Radioactive Man). He decides to perform this experiment by placing 10 mice near a radio for 5 hours. He compared these 10
mice to another 10 mice that had not been exposed. His test consisted of a heavy block of wood that blocked the mouse food.
he found that 8 out of 10 of the radiowaved mice were able to push the block away. 7 out of 10 of the other mice were able to
do the same.
Identify the hypothesis from the scenario:
Identify the Independent Variable (I.V):
Identify the Dependent Variable (D.V):
Qualitative Measurements:
Quantitative Measurements:
Identify the Control:
Identify the Constants:
Krusty was told that a certain itching powder was the newest best thing on the market, it even claims to cause 50%
longer lasting itches. Interested in this product, he buys the itching powder and compares it to his usual product. One test
subject (A) is sprinkled with the original itching powder, and another test subject (B) was sprinkled with the Experimental itching
powder. Subject A reported having itches for 30 minutes. Subject B reported to have itches for 45 minutes
Identify the hypothesis from the scenario:
Identify the Independent Variable (I.V):
Identify the Dependent Variable (D.V):
Qualitative Measurements:
Quantitative Measurements:
Identify the Control:
Identify the Constants:
Lisa is working on a science project. Her task is to answer the question: "Does Rogooti (which is a commercial hair
product) affect the speed of hair growth". Her family is willing to volunteer for the experiment.
Write a short basic materials, and basic procedure of her experiment design