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Memmler-s chapter 3 Exam Questions and Answers
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Memmler-s chapter 3 Exam Questions and Answers
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Memmler's chapter 3 Exam Questionsand Answers
Cell - Answers -Basic unit of life
Transmission electron microscope - Answers -Electron beam in place of visible light . 1
MILLION
Cytology - Answers -The study of cells
Microscope - Answers -An instrument that magnifies structures not visible with naked
eye
Compound light microscope - Answers -Most common. 1 THOUSAND. Has 2 lenses
Scanning electron microscope - Answers -Shows surface features. 3D 100THOUSAND
Plasma membrane - Answers -Outer layer cell. Encloses cell contents. Growth,
reproduction, and communication between cells. It regulates what enters/ leaves cell
Plasma membrane components - Answers -Phospholipids and cholesterol
Transporters - Answers -Shuttles substances around
Receptors - Answers -Allow for attachment of substances to membrane. Cell to cell
signaling
Enzymes - Answers -Participate in chemical reactions at cell surface
Linkers - Answers -Give structure to membrane . Attaches cells to other cells
Cell identity markers - Answers -Proteins unique to a person's cells IMPORTANT FOR
IMMUNITY
Membrane potential - Answers -ACTS AS BATTERY. Difference in electrical charge on
both sides of the cell membrane
Nucleus - Answers -Largest organelle . The brain
Contains chromosomes
, Chromosomes - Answers -In nucleus. Units of heredity, govern cellular activity
Nucleolus - Answers -Center of nucleus. Assemble ribosomes
Cytoplasm - Answers -Between cell membrane and nuclear membrane. Contains
cytosol and organelles
Cytosol - Answers -Fluid portion of cytoplasm
Organelles - Answers -Little cell organs that all have specific jobs
Endoplasmic reticulum - Answers -Membrane network that sorts / modifies proteins
Rough endoplasmic reticulum - Answers -Rough from ribosomes and modifies proteins
Smooth endoplasmic reticulum - Answers -Synthesizes lipids
Ribosomes - Answers -Build proteins
Mitochondria - Answers -Manufactures ATP
Golgi apparatus - Answers -Prepares proteins for transport
Lysosomes - Answers -Small sacs of enzymes. Digest intercellular fluids. Destroy old
cells
Peroxisomes - Answers -Break down harmful substances
Vesicles - Answers -Store materials/ move materials into or out of the cell
Centrioles - Answers -Rod shaped. Separates chromosomes during cell division
Cilia - Answers -Moves fluids around the cell
Flagella - Answers -Male sperm
Cellular diversity - Answers -Cells come in many shapes
Semipermeable - Answers -Passable for some molecules but not for others
Selectively permeable - Answers -Regulates what can enter / leave based on cell needs
Diffusion - Answers -Solute travels across membrane and distributed evenly (kool aid)
Does not require ATP
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