bio quiz.docx

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Cell Structure and function

1. Which one of the following eukaryotic cell structures does not contain DNA?

a. a nucleus

b. a mitochondrion

c. the endoplasmic reticulum

d. a chloroplast

. Which of the following is not an accurate description of a chromosome?

a. !t is a colored body locali"ed in the nucleus.

b. !t is a protein and nucleic acid comple#.

c. !t is the cellular structure that contains the genetic material.

d. !n eukaryotes$ it is composed of many DNA molecules attached end to end.

%. A centriole is an organelle that is&

a. present in the center of a cell's cytoplasm

b. composed of microtubules and important for organi"ing the spindle fibers

c. surrounded by a membrane

d. part of a chromosome



(. )he rough endoplasmic reticulum is&

a. an intracellular double*membrane system to which ribosomes are attached

b. an intracellular membrane that is studded with microtubular structures

c. a membranous structure found within mitochondria

d. only found in prokaryotic cells

+. !n the nucleus of eukaryotic cells$ the genetic material is comple#ed with protein andorgani"ed into linear structures called&

a. centrioles

b. histones

c. chromosomes

d. plasmids

,. Which of the following statements does not apply to the nuclear en-elope?

a. !t is a double membrane.

b. !t has pores through which material enters and lea-es.

c. !t is continuous with the endoplasmic reticulum.



d. !t has infoldings to form cristae.

. Some proteins are found in the plasma membrane. What part of the protein is within

the membrane itself?a. hydrophilic region

b. hydroponic region

c. hydrophobic region

d. hydrocoel region

/. What is the simplest le-el of packing of the eukaryotic chromosome?

a. the nucleolus

b. the nucleoid

c. the nucleosome

d. the nucleoplasm

0. ysosomes are formed by budding from which cellular organelle?

a. smooth endoplasmic reticulum

b. 2olgi apparatus

c. rough endoplasmic reticulum



d. nucleus

13. All pero#isomes carry out this function&

a. break down fats and amino acids into smaller molecules that can be used for

energy production by mitochondria

b. digest macromolecules using the hydrolytic en"ymes they contain

c. synthesi"e membrane components such as fatty acids and phospholipids

d. control the flow of ions into and out of the cell%

11. Which of the following does not apply to chloroplasts?

a. )hey contain chlorophyll and the en"ymes re4uired for photosynthesis.

b. )hey contain an internal membrane system consisting of thylakoids.

c. )hey synthesi"e A)5 6adenosine triphosphate7 from AD5 6adenosinediphosphate7 and 5i 6inorganic phosphate7.

d. )hey are bounded by two membranes$ the inner of which is folded into thecristae.

1. Which of the following statements is always true? All cells

a. have a cell membrane b. contain a nucleus c. ha-e a cell wall

1%. Which of the following forms of life is N8) eukaryotic?a. a protist such as an amoeba b. a plant cell such as 9lodea

c. a bacterial cell such as Streptococcus d. a human cell such as a red blood cell

1(. An electron microscope is needed for seeing

a. the cell membrane b. chloroplasts c. ner-e cells d. the nucleus

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1+. Which of the following substances is able to mo-e freely across the cell membrane?

a. water b. lipid soluble molecules c. water soluble proteins d. nucleic acids e. both 6a7

and 6b7

1,. Which of the following is correct? As cell si"e increases$ cell -olume increase6s7 at

:::::: cell surface area.

a. the same rate as b. a greater rate than c. a slower rate than

1. Which of the following groups contain life forms simpler than a cell?

a. ;onera b. Archaea c. <irus d. 5rokaryotes

1/. A cell that had relati-ely few energy needs would probably ha-e a relati-ely small

number of

a. chromosomes b. lysosomes c. ribosomes d. mitochondria

10. Which of the following processes re4uires both carrier molecules and energy?

a. osmosis b. facilitated transport c. acti-e transport d. all =6a7$ 6b7$ and 6c7> re4uire

carriers and energy

3. Digesti-e en"ymes or hydrolytic en"ymes are terms that would be associated with

a. golgi apparatus b. smooth endoplasmic reticulum c. ribosomes d. lysosomes

1. A plant cell placed in a hypotonic solution would

a. shrink b. burst c. become turgid d. remain unchanged

. Cell contents are isolated from many substances in the en-ironment due to the high

concentration of :::: in the cell membrane.

a. phospholipids and cholesterol b. proteins c. nucleic acids d. en"ymes

%. )he outer most boundary of an animal cell is :::::::::::.

a. the cell wall b. the cytoskeleton c. nuclear en-elop d. the cell membrane

(. Which of the following structures are common to both eukaryotic and prokaryotic

cells? a. nucleus b. cell membrane c. ribosomes d. both 6a7 and 6b7 e. both 6b7 and 6c7

















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