1.The tendency of an organism to maintain a stable internal environment is called (a) homeostasis (b) cell theory (c) reproduction (d) synthesis

2. The energy available for use by the cell is obtained from the life function of (a) reproduction (b) respiration (c) transport (d) synthesis

3. The chemical process by which complex molecules of protein are made from simple molecules is called (a) regulation (b) respiration (c) synthesis (d) excretion

4. Which life function includes the absorption and circulation of essential substances throughout an organism? (a) transport (b) excretion (c) ingestion (d) nutrition

5. Which term includes all of the chemical activities carried on by an organism? (a) regulation (b) metabolism (c) digestion (d) respiration

6. Which life activity is not required for the survival of an individual organism? (a) nutrition (b) respiration (c) reproduction (d) synthesis

7. In an ameba, materials are taken from its environment and then moved throughout its cytoplasm. These processes are known as (a) absorption and circulation (b) food processing and energy release (c) energy release and synthesis (d) coordination and regulation

8. In an organism, the coordination of the activities that maintain homeostasis in a constantly changing environment is a process known as (a) digestion (b) regulation (c) synthesis (d) respiration

9. Which life function provides substances that may be used by an organism for its growth and for the repair ofitstissues? (a)excretion (b)reproduction (c)nutrition (d) regulation

10. According to one classification system, which term includes all of the others? (a) algae (b) ameba (c) protozoa (d) protists

11. A modem classification system should reflect (a)the types of habitats in which organisms live (b) evolutionary relationships (c) color and size relationships (d) the eating habits of organisms

12. Among many species, those most closely related to each other would probably (a) live in the same geographic area (b) contain similar enzymes and hormones (c) have similar food requirements (d) live during the same time period

13. Which two classification groups indicate the scientific name of an organism? (a) kingdom and phylum (b) class and order (c) family and genus (d) genus and species

14.The classification group that shows the greatest similarity among its members is the (a) phylum (b) kingdom (c) genus (d) species

15. The mosquito Anopheles quadrimaculatus is most closely related in structure to (a) Aedes sollicitans (b) Culex pipiens(c) Aedes aegypti (d)Anopheles punctulatus

16.In one modern classification system, organisms are grouped into five (a) kingdoms (b) phyla (d) genera (d) species

19.In which kingdom is an organism classified if it lacks a membrane separating its genetic material from its cytoplasm? (a) protist (b) monera (c) plant (d)animal

20. Which is true of organisms that are classified in the same genus?

(a) They must be in the same phylum, but may be of different species.

(b) They must be of the same species, but may be in different phyla.

(c) They must be in the same phylum, but may be in different kingdoms.

(d) They must be in the same kingdom, but may be in different phyla.

21. Which group of organisms in the animal kingdom is characterized by jointed appendages and exoskeletons? (a) arthropods (b) chordates (c) annelids (d)coelenterates

22.The correct order used in classifying organisms is

(a) phylum, kingdom, genus, species

(b) kingdom, phylum, genus, species

(c) kingdom, species, phylum, genus

(d) phylum, genus, species, kingdom

23. Fish, frogs, and humans are examples of (a) coelenterates (b) annelids (c) arthropods (d) chordates

24. The scientific classification of animals is based primarily on similarities in (a) where the organisms live (b) size (c) the food the organisms eat (d)structure

25. A multicellular photosynthetic organism would probably be classified as a (a) moneran (b) protist (c) plant (d) fungus

26. The term "semipermeable" is used in reference to the (a) nucleolus (b) cell wall (c) cytoplasm (d) cell membrane

27. The canals that connect the cell membrane with the nuclear membrane are the (a) ribosomes (b) lysosomes (c) endoplasmic reticulum (d) nuclei

28. The part of a cell that is in most direct contact with the environment is the (a) nucleus (b) cell membrane (c) mitochondrion (d) centrioles

29. Plant cell organelles that contain photosynthetic pigments are (a) chloroplasts (b) centrioles (c) chromosomes (d) cell walls

30. A student could tell the difference between onion skin cells and cheek cells because the onion skin cells have a (a) cell membrane (b) nucleus (c) centriole (d) cell wall

31. The sites of protein synthesis in the cytoplasm are the (a) ribosomes (b) lysosomes (c) nuclei (d) centrioles

32.The watery environment in which most life activities of a cell take place is the (a) cell membrane (b) chloroplast (c) cytoplasm (d) vacuole

33. Intracellular transport of materials is most closely associated with which cell organelle? (a) cell membrane (b) cell wall (c) ribosome (d) endoplasmic reticulum

34.Centrioles are normally present in the (a) cytoplasm of onion cells (b) cytoplasm of cheek cells (c) nuclei of liver cells (d) nuclei of bean cells

35. Which organelle contains hereditary material and controls most cell activities? (a) nucleus (b) cell membrane (c) vacuole (d) endoplasmic reticulum

36. Centrioles are cell structures involved primarily in (a) cell division (b) storage of fats (c) enzyme production (d) cellular respiration

37. The cell organelles that are the sites of aerobic cellular respiration in both plant and animal cells are (a) mitochondria (b) centrioles (c) chloroplasts (d) nuclei

38.An increase in the concentration of ATP in a muscle cell is a direct result of which life function? (a) respiration (b) reproduction (c) digestion (d) excretion

39. An organelle found within the cell nucleus is a (a) centriole (b) nucleolus (c) chloroplast (d)mitochondrion

40. An organelle that is present in the cells of a mouse but not present in the cells of a bean plant is a (a) cell wall (b) chloroplast (c) cell membrane (d) centriole

41. A nonliving cell structure is a (a) cell membrane (b) nucleus (c) cell wall (d) Golgi complex

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