Chapter 3 Cells

A beaker contains two compartments. Compartment A contains a 20% glucose solution, and compartment B contains 5% glucose solution. The membrane is permeable to water but impermeable to glucose. Which statement is true at equilibrium? a. The volume A is greater than the volume B b. The volume A is less than the Volume in B c. The volume remains the same in both compartments d. Gluscose diffuses from A to B

a. The volume A is greater than the volume B

Most of the DNA and genetic information is stored within the a. nucleus b. golgi apparatus c. lysosomes d. centrioles

a. nucleus

Solution that causes a red blood cell to swell with water and burst

hypotonic

solution that has the same concentration as the inside of a red blood cell

hypotonic

"gel in the cell" (outside the nucleus)

cytoplasm

This semipermeable phospholipid bilayer controls what enters and leaves the cell. a mitochondria b. cell membrane c. lysosome d. rough endoplasmic reticulum

b. cell membrane

The selectively permeable membrane a. permits filtration but not diffusion or osmosis b. determines which substance enter and leave the cell c. allows for the unrestricted movement of water and electrolytes across the cell membrane d. permits diffusion but not osmosis

b. determines which substance enter and leave the cell

The words rough and smooth refer to the a. ribosomes b. endoplasmic reticulum c. golgi apparatus d. cell membrane

b. endoplasmic reticulum

With regard to the cell cycle, which of the following is correct? a. the M phase is the same as interphase b. cells cannot enter phase G0 when they complete the cycle c. cell division occurs during the M phase d. Prophase, metaphase, anaphase, and telophase occur during phase G1

c. cell division occurs during the M phase

Which of the following is an incorrect statement regarding the cellular organelles? a. most ATP is produced in the mitochondria b. Lysosomes contain potent enzymes that digest cellular waste and debris c. most DNA is located within the golgi apparatus d. The RER is involved in protein synthesis

c. most DNA is located within the golgi apparatus

Short, hairlike projections on the outer surface of the cell

cilia

Which of the following is not true of the mitochondria ? a. numbers of mitochondria reflect the metabolic activity of the cell b. mitochondria are the organelles that make most of the body's ATP c. mitochondria are located in the cytoplasm d. Mitochondria are the sites of protein synthesis

d. Mitochondria are the sites of protein synthesis

A stem cell develops into a muscle cell. which of the following most accurately describes this process a. apoptosis b. necrosis c. neoplastic d. differentiation

d. differentiation

Blood pressure forces water and dissolved solutes out of the capillaries and into the tissue space. This process is called a. osmosis b. active transport c. pinocytosis d. filtration

d. filtration

Which of the following is common to the RER, ribosomes and golgi apparatus? a. ATP- producing organelles b. "house cleaning" by proteolytic enzymes c. ammonia- producing organelles d. protein- producing organelles

d. protein- producing organelles

Cytology is a. synonymous with physiology b. the type of metabolism that most cells use to extract energy from food c. the study of genetics d. the study of cell structure and function

d. the study of cell structure and function

drop of red dye is added to beaker of water: in 2 hours. the beaker of water is uniformly colored red

diffusion

Classified as rough and smooth

endoplasmic reticulum

Describes a solution that is more concentrated than the inside of a cell

hypertonic

protein containing vesicle within a cell fuses with the cell membrane and ejects the protein

exocytosis

Passive transport mechanism whereby glucose is "helped" across the membrane by a helper molecule within the membrane

facilitated diffusion

Pressure gradient is the driving force for this type of passive transport

filtration

Because of its salt concentration, normal saline is considered this

isotonic

Digestive organelles that engage in phagocytosis intracellular "house cleaning"

lysosomes

"power plants" of the cell; most ATP made here

mitochondria

Control center of the cell; contains the DNA

nucleus

An example of this transport mechanism is the swelling of a blood clot as water is pulled into the clot

osmosis

Called "cellular drinking"

pinocytosis

Organelles attached to the endoplasmic reticulum; involved in protein synthesis

ribosomes