PMA 1 Review

The graph shows atmospheric carbon dioxide levels since the year 1880.

Which of the following conclusions can be drawn from this graph?

• Atmospheric carbon dioxide levels are responsible for global temperature change

• Atmospheric carbon dioxide levels are rising at the same rate for the past century.

• Atmospheric carbon dioxide levels have remained the same over the past century.

• Atmospheric carbon dioxide levels have risen at a higher rate during the last century.

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NGSS.MS-ESS3-5

Enzymes are molecules that help speed up reactions in your body. The graphs show the reaction

rate for an enzyme across a range of temperatures and pH.

Based on these data, this enzyme functions best at what temperature and pH?

• Temperature of 10°C and a pH of 1

• Temperature of 37°C and a pH of 6

• Temperature of 40°C and a pH of 8

• Temperature of 50°C and a pH of 10

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NGSS.MS-PS1-2

A population of rabbits in an area of Northern Florida was monitored to learn more about the factors that affect the population size. The graph below shows data collected about the rabbit population size for 30 generations.

Based on the data above, which of the following would be a scientific question that could be answered with the given data?

• Why are the rabbits average weight declining?

• What types of shelters are available for the rabbits?

• How do the rabbits acquire food in their environment?

• Has the rabbit population been impacted by recent construction?

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

An ecologist is examining a field with wild flowers. They want to know what types of pollinators carry the most pollen among flowers in the field. In order to determine how much pollen is being carried by each pollinator, the ecologist must examine the entire bodies of multiple organisms, before releasing them back into the wild flower field.

What microscope would best assist the ecologist in this task?

• Light Microscope

• Dissecting Microscope

• Scanning Electron Microscope

• Transmission Electron Microscope

Taq polymerase is an enzyme used in the polymerase chain reaction (PCR) to replicate fragments of DNA. A study published in 1976 examined the properties of Taq polymerase after the enzyme was isolated from Thermus aquaticus, a thermophilic bacterium that lives in the hot springs of Yellowstone National Park. The graph shows one of the results of the study.

Which statement about enzyme activity is best supported by this graph?

• An enzyme functions best under specific temperature conditions.

• An enzyme’s rate of activity increases with time until it becomes inactive.

• An enzyme must be composed of multiple polypeptides, or subunits, to be active.

• An enzyme works equally well in bacteria that are adapted to high temperatures and in human cells.

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NGSS.MS-LS1-5

Below shows data collected for populations of damselflies from August 1st until October 16th.

What conclusion can be drawn based on the data?

• Only embanked ponds result in protozoa infection.

• Creek-fed ponds are producing healthier damselflies.

• Rate of infection in embanked ponds has increased over time.

• The later in the year the high the infection rate in creek-fed ponds.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

The graph here show the activity of three enzymes that are a part of the human digestive system.

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

• Enzymes do not work past a pH of 9.

• Enzymes operate best at a specific pH.

• The pH does not affect how an enzyme functions.

• The pH changes the role of the enzyme within the digestive system.

The graph shows how a Serengeti buffalo population changed over a period of years. During this time period, the buffalo were affected by the rinderpest virus, a debilitating disease with high mortality (death) rate. The virus was successfully eliminated from the population in Year 3.

What is the immediate impact on the buffalo population after the virus was eliminated?

• The population decreased

• The population remained the same

• The population increased

• The population decreased, then increased

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

The graph below shows the energy usage each month for a home that has a gas heater and an electric air-cooling system.

Which of the following could be inferred by the information in the graph?

• More kilowatt-hours were used during cooler months than warmer months.

• The months of July, August, and September were the warmest months.

• Less kilowatt-hours were used in March than any other month.

• The month of December was the coldest month.

Tags

NGSS.MS-ESS2-5

The bar graph below shows the observations David recorded about the type of fruit his classmates brought in their lunch bags.

Which is a guess made by David and NOT an observation from his recordings?

• Students brought four types of fruit.

• The students' favorite fruit is bananas.

• Three students did not bring fruit to class.

• More students brought apples than oranges