Bellringer 29

Which term means balance or equilirium

• homeostasis

• metabolism

• hyperthyroidism

Tags

NGSS.HS-LS1-3

the process by which organisms eliminate waste products and toxic substances from their bodies

• ingesting

• digesting

• excreting

• synthesis

The diagram represents an energy pyramid.

At which level do the organisms all carry on both respiration and photosynthesis?

• A

• B

• C

• D

Tags

NGSS.MS-LS1-6

The diagram represents some activities carried on by a single-celled organism.

This single-celled organism is maintaining homeostasis by

• limiting the number of the molecules of A that it excretes

• eliminating molecules of compound B

• excreting molecules of compound C

• using sunlight to increase the number of food molecules that it takes in

Tags

NGSS.MS-LS1-2

A proposal for a new manufacturing plant has been brought to a town’s planning board. A committee has been assigned the task of presenting the positive and negative effects that this new facility could have on the town and its ecosystem. Which row of the chart most accurately states possible effects of building this manufacturing plant?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-4

The sea cucumber, a relative of sea stars and sea urchins, was once mostly ignored by humans. Even though no scientific evidence exists, some people believe that eating sea cucumbers has medical benefits. As a result, sea cucumbers that were once plentiful are now found in small numbers.

Which statement most directly describes this situation?

• Sea cucumbers are an animal resource being appropriately managed to benefit humans.

• The population of sea cucumbers is being greatly reduced by natural predators, such as sea stars.

• The direct harvesting of organisms by humans can have irreversible effects.

• Biological research has led to the use of plant and animal products that have medical benefits.

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-4

NGSS.MS-LS2-5

Mt. St. Helens erupted in 1980. The photographs represent the changing environment in the area of the Mt. St. Helens volcano in 1988 and 2001.

Following the volcanic eruption in 1980, which process occurred that resulted in an increase in the number of species?

• ecological succession

• deforestation

• biological evolution

• differentation

Tags

NGSS.MS-LS2-4