1st Six Weeks Test Review Part II

A scientist performs a series of experiments.  The results support the scientist's initial idea, and after conferring with colleagues, the scientist discovers that there are many experiments that support this idea.  This idea may now be considered a ___________.

• theory
• hypothesis
• observation
• control

Living things do all of the following except ....

• make adjustments to nonliving factors around them
• maintain a steady internal environment
• respond to other organisms
• pass an identical genetic code to their offspring

Which is an example of trying to maintain homeostasis

• creating thoughts to solve a problem
• digesting foods to reduce their particle size
• producing sweat to reduce body temperature
• sprinting across a street to avoid traffic

Which is an example of a stimulus and the accompanying response of an organism?

• A hawk grabs a branch to gain a perch
• A rat scurries past, and a python strikes at it.
• A wildebeest crosses a river during migration
• An earthworm burrows into new, rich soil.

Ecology is the study of interactions between ________.

• the animal groups in an area
• living and nonliving things in an area
• the nonliving things in an area
• the plants and animals in an area

The portion of the Earth that supports the existence of living things is the _______________.

• ecosystem
• habitat
• biosphere
• niche

Which is an abiotic factor?

• a forest of deciduous trees
• a polar bear on an ice flow
• an ocean current of cold water
• fungi and moss on a rotting log

Which is a biotic factor that might affect the life of a water dwelling organism?

• temperature of the water
• speed of water current 
• pollutants in water
• bacterial population in water

Which is part of a biogeochemical cycle?

• carbon trapped on the ocean floor
• helium gas escaping to space
• lava flowing from an active volcano
• solar radiation traveling to Earth

In an ecosystem, what happens to the atoms of certain chemical elements, such as carbon, oxygen, and nitrogen?

• They move into and out of living systems
• They are only found in abiotic factors
• They move out of living systems and do not return
• They move into living systems and remain there.