BIOLOGY 301 EXAM 1 QUESTIONS AND
ANSWERS
When experimental manipulations are conducted to test a hypothesis, what is the
purpose of including a control? - Correct Answers -To ensure the treatment is the only
thing affecting the outcome
One of your friends is studying to become a forensic entomologist. They mentioned a
pretty cool experiment they designed for one of their classes. They wanted to know the
rate of decomposition of carcasses found in forests compared to the rate in open
habitat. For the comparison they put one dead pig in a forest, one dead pig in a field,
one dead pig in a closed off setting where scavengers and insects cannot reach, and
measured which insects and scavengers came to the carcasses, how much tissue was
lost through time, and the temperatures of the pigs. Why is what they did scientifically
invalid? - Correct Answers -No replication and no randomization
True/False:
An acidic solution contains MORE hydrogen ions than alkaline solution - Correct
Answers -True
A family member has a rain collection cup in their backyard to determine the amount of
rainfall that fell. Is this an example of climate measurements or weather measurements?
- Correct Answers -Weather
Which parts of the Earth have larger changes of seasonality? - Correct Answers -Mid-
latitudes
If you designed an experiment to determine how temperature and the species
composition of seeds affect the growth and reproduction of seed-eating birds. what
would be the independent (predictor) and dependent (response) variables? - Correct
Answers -Dependent variables: Growth and reproduction of seed-eating birds
Independent variables: Temperature and species composition of seeds
Please use the diagram to answer the question below:
Temperate grasslands, or prairies in North America, form where winters are cold and
precipitation is relatively low. If temperatures increase with climate change (assuming
no change in precipitation), organisms originating in what biome will be able to survive
and possibly invade in temperate grassland biomes? - Correct Answers
-Savanna/Tropical Seasonal Forest
ANSWERS
When experimental manipulations are conducted to test a hypothesis, what is the
purpose of including a control? - Correct Answers -To ensure the treatment is the only
thing affecting the outcome
One of your friends is studying to become a forensic entomologist. They mentioned a
pretty cool experiment they designed for one of their classes. They wanted to know the
rate of decomposition of carcasses found in forests compared to the rate in open
habitat. For the comparison they put one dead pig in a forest, one dead pig in a field,
one dead pig in a closed off setting where scavengers and insects cannot reach, and
measured which insects and scavengers came to the carcasses, how much tissue was
lost through time, and the temperatures of the pigs. Why is what they did scientifically
invalid? - Correct Answers -No replication and no randomization
True/False:
An acidic solution contains MORE hydrogen ions than alkaline solution - Correct
Answers -True
A family member has a rain collection cup in their backyard to determine the amount of
rainfall that fell. Is this an example of climate measurements or weather measurements?
- Correct Answers -Weather
Which parts of the Earth have larger changes of seasonality? - Correct Answers -Mid-
latitudes
If you designed an experiment to determine how temperature and the species
composition of seeds affect the growth and reproduction of seed-eating birds. what
would be the independent (predictor) and dependent (response) variables? - Correct
Answers -Dependent variables: Growth and reproduction of seed-eating birds
Independent variables: Temperature and species composition of seeds
Please use the diagram to answer the question below:
Temperate grasslands, or prairies in North America, form where winters are cold and
precipitation is relatively low. If temperatures increase with climate change (assuming
no change in precipitation), organisms originating in what biome will be able to survive
and possibly invade in temperate grassland biomes? - Correct Answers
-Savanna/Tropical Seasonal Forest
