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Keystone Biology Review 1

Test Description: Review for Keystone Exam 1.

Instructions: Answer all questions to get your test result.

1) Which characteristic is shared by both prokaryotes and eukaryotes?

AD. need oxygen gas to breathe BC. contain genetic material CA. have organ systems DB. make their own food

2) Why are nonnative species often considered a disturbance in an ecosystem? BIO.B.4.2.4

Ab. They compete for resources. Bc. They have special growth needs. Cd. They cause increased biodiversity. Da. They increase mutations.

3) A species of snapping turtles has a tongue that resembles a worm. The tongue is used to attract small fish. Which best describes the interaction between the fish and the snapping turtle?

Apredation Bparasitism Ccompetition Dsymbiosis

4) Which example describes a mutualistic relationship between organisms? BIO.B.4.2.2

ACrabs eat the remains of dead fish BYoung wasps prey on caterpillars CTapeworms feed on food in the intestines of cats DAnts protect a tree on which they feed

5) The function of which human organ is most like the cell walls of bacteria?

ASkin BHeart CLiver DPancreas

6) Which of the following is a property of water that allows an insect to walk on the surface of water?

ACohesion BHigh Specific Heat CLow Freezing Point DSolubility

7) Which characteristic is shared by all prokaryotic and eukaryotic organisms?

AThe need for a source of energy BThe ability to reproduce asexually CThe need for oxygen for respiration DThe ability to make their own food

8) Life functions are performed at many levels of biological organization. Which level of biological organization is the simplest level at which a structure can support life function?

ATissue BCells COrgan System DOrganelle

9) Cells are largely made of organic compounds that contain carbon. Which property of the carbon atom makes it an essential component of organic compounds?

ACarbon is solid at room temperature BCarbon can form four covalent bonds CCarbon oxidizes to carbon dioxide DCarbon is a nonmetal

10) Plants cells use sunlight to make their own food. Which structure allows plant cells to perform this function?

AMitochondrion BVacuole CChloroplast DNucleus

*select an answer for all questions

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