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1 Pre-Test What is Biology

Last updated almost 5 years ago

5 questions

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Question 1

1.

The graph below 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 have been rising at an increasingly higher rate.

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

Atmospheric carbon dioxide levels have fell as renewable energy resources are increased.

Question 2

2.

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

Question 3

3.

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

Scanning Electron Microscope

Transmission Electron Microscope

Dissecting Microscope

Question 4

4.

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 a high mortality (death) rate. However, the virus was eventually eliminated from the population. Which of the following inferences is supported by the graph?

The virus was eliminated during year 3.

The ecosystem sustain, at most, 50,000 buffalo.

A new predator moved into the ecosystem in year 16.

The ecosystem is healthiest with a population of 30,000 buffalo.

Question 5

5.

An ecologist is studying Dunaliella salina a single celled algae in a local pond. The pond is
located near a construction site and the ecologist wants to know what affect, if any, the
construction site is having on the pond, as there has been a steady decline in the Dunaliella
salina population. In order to complete their study the ecologist would like to examine the
organelles inside Dunaliella salina.
If they would like to examine the inner structure of the chloroplasts of an already dead
Dunaliella salina, what microscope would be best suited for this task?

Light Microscope

Dissecting Microscope

Scanning Electron Microscope

Transmission Electron Microscope