Bio Ch. 7 practice test ANSWERS

Multiple ChoiceIdentify the choice that best completes the statement or answers the question.

__B__ 1. Who used a compound microscope to see chambers within cork and named them “cells”?a. Anton van Leeuwenhoekb. Robert Hookec. Matthias Schleidend. Rudolf Virchow

___D_ 2. What advance in technology made the discovery of cells possible? a. the centrifugeb. the particle acceleratorc. the ultraviolet lightd. the microscope

__C__ 3. Which of the following is NOT a principle of the cell theory?a. Cells are the basic units of life.b. All living things are made of cells.c. Very few cells are able to reproduce.d. All cells are produced from existing cells.

_C___ 4. Which of the following enclose their DNA in a nucleus?a. prokaryotesb. bacteriac. eukaryotesd. viruses

__C__ 5. Which of the following organisms are prokaryotes?a. plantsb. animalsc. bacteriad. fungi

__A__ 6. Which of the following is a function of the nucleus?a. stores DNAb. stores sugarsc. builds proteinsd. packages proteins

__B__ 7. Which organelle breaks down organelles that are no longer useful?a. Golgi apparatusb. lysosomec. endoplasmic reticulumd. mitochondrion

__A__ 8. Which of the following is a function of the cytoskeleton?a. helps a cell keep its shapeb. contains DNAc. surrounds the celld. helps make proteins

___C_ 9. Which structures are involved in cell movement?a. cytoplasm and ribosomesb. nucleolus and nucleusc. microtubules and microfilamentsd. chromosomes

__D__ 10. Which structure makes proteins using coded instructions that come from the nucleus?a. Golgi apparatusb. mitochondrionc. vacuoled. ribosome

__A__ 11. Which sequence correctly traces the path of a protein in the cell?a. ribosome, endoplasmic reticulum, Golgi apparatusb. ribosome, endoplasmic reticulum, chloroplastc. endoplasmic reticulum, lysosome, Golgi apparatusd. ribosome, Golgi apparatus, endoplasmic reticulum

__A__ 12. Which organelles are involved in energy conversion?a. mitochondria and chloroplastsb. mitochondria and ribosomesc. smooth and rough endoplasmic reticulumd. Golgi apparatus and chloroplasts

__C__ 13. Which organelle would you expect to find in plant cells but not animal cells?a. mitochondrionb. ribosomec. chloroplastd. smooth endoplasmic reticulum

__B__ 14. You will NOT find a cell wall in which of these kinds of organisms? a. plantsb. animalsc. fungid. bacteria

__B__ 15. Which of the following structures serves as the cell’s boundary from its environment?a. mitochondrionb. cell membranec. chloroplastd. channel protein

__D_ 16. Which of the following is a function of the cell membrane?a. breaks down lipids, carbohydrates, and proteins from foodsb. stores water, salt, proteins, and carbohydratesc. keeps the cell wall in placed. regulates the movement of materials into and out of the cell

__B__ 17. The diffusion of water across a selectively permeable membrane is calleda. osmotic pressure.b. osmosis.c. pinocytosis.

d. active transport.

__A__ 18. An animal cell that is surrounded by fresh water will burst because the osmotic pressure causesa. water to move into the cell.b. water to move out of the cell.c. solutes to move into the cell.d. solutes to move out of the cell.

____D19. Which means of particle transport requires input of energy from the cell?a. diffusionb. osmosisc. facilitated diffusiond. active transport

Figure 7–5

__A__ 20. Which means of particle transport is shown in Figure 7–5 above?a. endocytosisb. exocytosisc. facilitated diffusiond. protein pump

__C__ 21. Which of the following activities is NOT a way that unicellular organisms maintain homeostasis?a. reproductionb. growthc. cell specializationd. response to the environment

__B__ 22. Which term describes the relatively constant internal physical conditions of an organism?

a. cell specializationb. homeostasisc. organ systemd. unicellularity

__A__ 23. Which of the following is an example of an organ?a. heartb. epithelial tissuec. digestive systemd. nerve cell

__C__ 24. A group of similar cells that perform a particular function is calleda. an organ.b. an organ system.c. a tissue.d. a division of labor.

___A_ 25. Which list represents the levels of organization in a multicellular organism from the simplest level to the most complex level?a. cell, tissue, organ system, organb. organ system, organ, tissue, cellc. tissue, organ, organ system, celld. cell, tissue, organ, organ system

Modified True/FalseIndicate whether the statement is true or false. If false, change the identified word or phrase to make the statement true.

___F_ 1. A scanning electron microscope allows light to pass through a specimen and focuses it using two lenses to form an image. _____LIGHT MICROSCOPE____________________

__F__ 2. Cilia and flagella are made of protein filaments called endoplasmic reticulum. ____MICROTUBULES_____________________

__F__ 3. Plant cells have chloroplasts but not mitochondria. __________HAVE_______________

__T__ 4. Moving materials from an area of low concentration to an area of high concentration requires active transport. _________________________

___T_ 5. There is a division of labor among the cells of multicellular organisms. _________________________

Short Answer

1. What does the cell theory say?

Figure 7–8

2. Is the cell in Figure 7–8 above a prokaryote or a eukaryote? What features help you determine your answer?

3. Explain, in terms of osmosis, why a raisin placed in a cup of pure water overnight will puff up with water.

4. List the four levels of organization in a multicellular organism in order from simplest to most complex.

Science Skills

Figure 7–11

HINTS: CELL I IS AN ANIMAL CELL, CELL II IS A PLANT CELLN= chloroplastI= cell membrane, L=cell membrane (inside of the cell wall J)O=central vacuoleE and K are nucleus

1. Interpret Visuals Which drawing in Figure 7–11, I or II, contains structures that carry out photosynthesis? What is this structure labeled in the diagram?

2. Compare and Contrast Look at Figure 7–11. Which structure in drawing I corresponds to structure L in drawing II? What is the name of this structure?

3. Compare and Contrast Which three structures are found in drawing II of Figure 7–11 but not in drawing I? What are the names of these structures?

4. Interpret Visuals Which organelle is labeled K in Figure 7–11? What is the function of this organelle?

5. Interpret Visuals Do the drawings in Figure 7–11 represent prokaryotes or eukaryotes? How do you know?