biology unit 1

Which of the following is an example of an organism maintaining homeostasis??

• A plant using the openings on its leaves, stomata, to exchange gases and evaporate water to allow more water to get into the plant

• A Runner perspiring while running on a hot summer day

• The human body releasing insulin to keep blood sugar steady

• The maintain ace of a body temperature around 98.6 degrees F

• All of the above

What does a THEORY explain?

• Explains someone's opinion

• Explains a wide range of observations

• Explains the control group

Which ones are the unifying themes of Biology?

• Evolution explains the unity and diversity of life

• Structure and function are related

• The number of species living in an area affects the food scarcity

• All levels of life have systems have related parts (group of interacting parts)

Which of the following trends is true for the shown?

• There was more carbon dioxide in the year 1950 than the year 2000.

• There was a decrease in carbon dioxide from the year 1900 to 1925.

• There was 250 ppm of carbon dioxide in the year 1875.

• There was 300 ppm of carbon dioxide in the year 1900.

Which conclusion is best supported by the graph shown?

• The enzymes rate of activity constantly increases.

• The enzyme is the most active at the highest temperatures.

• This enzyme becomes inactive at 89 degrees Celsius.

• An enzyme functions best under specific temperature conditions.

What conclusion can be drawn from the graph shown?

• The cardenolide concentration was found in the monarch butterflies regardless of the concentration in the milkweed plant.

• The cardenolide concentration decreased in the monarch butterflies as it decreased in the milkweed plant.

• The cardenolide concentration in the monarch butterflies is dependent on the concentration in the milkweed plant.

• The cardenolide concentration in the milkweed plant decreased as the plant grew larger.

What conclusion can be drawn from the graph shown?

• Atmospheric carbon dioxide levels have been decreasing over time.

• Atmospheric carbon dioxide levels are responsible for global temperature changes.

• Atmospheric carbon dioxide levels have been increasing over time.

• Atmospheric carbon dioxide levels have remained the same over time.

Which description is most likely shown by this graph?

• A population of wolves increases and then increases rapidly.

• A population of birds increases but then become stable and constant.

• A population of mice slowly increases and decreases over time.

• A population of fish increases in the spring but decreases in the fall.

Which of the following is a valid conclusion about how pH affects enzyme activity?

• Enzymes don't work at a pH greater than 9

• The pH doesn't affect the enzyme activity

• The pH changes the role of the enzyme

• Each enzyme works best at a specific pH

Which of the following questions could be answered based on the graph shown?

• Has the rabbit population been impacted by recent construction?

• How do the rabbits acquire food in their environment?

• What types of shelters are available for the rabbits?

• Why are the rabbit's average weight declining?