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Biology 105 Plant Exam 2 Study Guide Questions and Answers 2024( A+ GRADED 100% VERIFIED).
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Biology 105 Plant Exam 2 Study Guide Questions and Answers 2024( A+ GRADED 100% VERIFIED).
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Biology 105 Plant Exam 2 Study Guide(10.1) What is the extracellular matrix (ECM)? - ANS A network of material that is secreted from
animal cells and forms a complex meshwork outside of cells. The ECM provides strength,
support, and organization.
(10.1) What is a cell wall? - ANS A relatively rigid, porous structure located outside the plasma
membrane of prokaryotic, plant, fungal, and certain protist cells; provides support and
protection.
(10.1) bones and cartilage in animals are composed largely of? - ANS ECM
(10.1) woody portions of plants are composed mostly of? - ANS cell wall
(10.1) animal cells secrete materials that form an ECM that provides _____ and helps to
_______ cells
A.) Aid, structure
B.) Support, organize
C.) Energy, move
D.) Movement, heal - ANS B.) support and organize
(10.1) True or False?
ECM found in animals performs many important functions, including what 4 main functions? -
ANS strength
structural support
organization
cell signaling
(10.1) The two Adhesive and proteins are ____ and ____ while the structural proteins are _____
and_____
A.) Fibronectin and Collagen; Laminin and Elastin
B.) Laminin and Collagen; Fibronectin and Elastin
C.) Fibronectin and Laminin; Collagen and Elastin
D.) Elastin and Laminin; Collagen and Fibronectin - ANS C.) Fibronectin and Laminin; Collagen
and Elastin
(10.1) the Adhesive proteins Fibronectin and Laminin both do what function? - ANS Connects
cells to the ECM and helps to organize components in the ECM.
, (10.1) The structural protein Collagen does what function? - ANS Forms large fibers and
interconnected fibrous networks in the ECM. Provides tensile strength
(10.1) the structual protein Elastin does what function? - ANS Forms elastic fibers in the ECM
that can stretch and recoil.
(10.1) describe glycosaminoglycan - ANS The most abundant type of polysaccharide in the
extracellular matrix (ECM) of animals, consisting of repeating disaccharide units that give a
gel-like character to the ECM.
(10.1) define proteoglycan - ANS A long, linear core protein with many GAGs attached to it;
found in the ECM.
(10.1) describe chitin - ANS A tough, nitrogen-containing, polysaccharide polymer that forms
the external skeleton of many insects and crustaceans and is found in the cell walls of fungi.
(10.1) The Cell Wall of Plants Provides _____ and ______ to Compression
A.) Strength, Resistance
B.) Energy, Compartmentalization
C.) Chitin, ECM
D.) Photosynthesis, Bacteria - ANS A.) Strength, Resistance
(10.1)What is the main macromolecule of the cell wall of plants and many algae; a linear
polymer made of thousands of glucose monomers. - ANS Cellulose
(10.1)The cell walls of plants are composed of a _____ cell wall and _____ cell wall - ANS
Primary, Secondary
(10.1)True or False?
Secondary cell wall is made before the Primary cell wall. - ANS False, Primary is first because
they are named based on order they are created
(10.1) Define Primary Cell Wall - ANS -In plants, a relatively thin and flexible cell wall that is
synthesized first between two newly made daughter cells.
-main constituent of the primary cell wall is cellulose.
(10.1) Define Secondary Cell Wall - ANS -A thick rigid plant cell wall that is synthesized and
deposited between the plasma membrane and the primary cell wall after a plant cell matures
and has stopped increasing in size.
-made in layers by the successive deposition of cellulose microfibrils and other components
(10.2) Define the general term, Cell Junction - ANS Specialized structures that adhere cells to
each other and to the ECM.
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