Question 4
Dr Injectus treats an animal cell with a chemical that destroys the cell's mitochondria. As a result of his action, which of the cell's processes will most likely be stopped?
a
aerobic respiration
b
photosynthesis
c
enzyme production
d
fermentation
Question 5
In this food chain, the spiders are —
a
primary consumers
b
autotrophs
c
producers
d
secondary consumers
Question 6
Directions: The picture shows a forest before and after a fire. Use the picture to answer any questions that follow.
Which of the following will be the first to do well in this forest after the fire?
a
small animals that need many large plants to hide from animals that eat them
b
large trees, because they can easily grow back new branches and need little sunlight
c
earthworms and insects that need wet and deep soil to live and feed in
d
short plants and grasses, because more sunlight will be able to reach the forest floor
Question 7
Sarah has type A blood, and Jesse has type O blood. Their son has type B blood. Can Jesse be the baby daddy? He is a bit worried.
Please complete the Punnett squares to determine the possibilities.
a
Yes, if both parents are heterozygous
b
Yes, if one parent is heterozygous
c
No, this is impossible
d
No, type B blood must be homozygous
Question 8
Read the passage about plankton algae.
Plankton algae are microscopic algae that live in water. In a healthy pond ecosystem, plankton algae can be beneficial. They are fed on by zooplankton which, in turn, become food for fish. Plankton algae can grow rapidly when they are supplied with nutrients such as nitrogen and phosphorous. When fertilizer runs off from a farmer's field into a nearby pond, the extra nutrients can cause the plankton algae to grow too quickly and form a bloom. The bloom of algae can cover the entire surface of the pond.
Which two arguments correctly predict an effect of an algal bloom on the pond ecosystem?
a
The underwater plants will not receive enough sunlight to grow.
b
The temperature of the water will begin to increase.
c
The fish population will increase with the added nutrients.
d
The amount of oxygen in the pond water will be lower.
e
The amount of carbon dioxide in the pond water will be lower.
Question 9
Read the passage about polar bears.
Polar bears in the Arctic use the sea ice that covers the North Pole as a platform for hunting seals, their primary prey. Recent data suggest that Arctic sea ice may have thinned as much as 40% over the past 50 years. If polar ice continues to melt, it is likely that the polar bear will become extinct. Many scientists believe that the melting of the Arctic sea ice is due primarily to human activities.
Which of the following human activities is most likely to have the greatest effect on the thickness of the polar ice cap?
a
burning of fossil fuels
b
human population size
c
fishing in the Arctic Ocean
d
nuclear energy production
Question 10
Photosynthesis uses water and carbon dioxide to convert sunlight energy into
a
high energy triglycerides
b
oxygen and glucose (chemical energy)
c
carbon monoxide and water
d
proteins and oxygen
Question 4
a. aerobic respiration
Question 5
d. secondary consumers
Question 6
d. short plants and grasses, because more sunlight will be able to reach the forest floor
Question 7
b. Yes, if one parent is heterozygous
Question 8
a. The underwater plants will not receive enough sunlight to grow.
d. The amount of oxygen in the pond water will be lower.
Question 9
a. burning of fossil fuels
Question 10
b. oxygen and glucose (chemical energy)