Question

QUESTION 1

1. Match the following terms with their definitions.

   -       A.       B.       C.       D.       E.       F.       G.       H.       I.       J.       K.    Nonpolar, does not interact with water       -       A.       B.       C.       D.       E.       F.       G.       H.       I.       J.       K.    Polar, interacts with water       -       A.       B.       C.       D.       E.       F.       G.       H.       I.       J.       K.    All single carbon-carbon bonds (C-C)       -       A.       B.       C.       D.       E.       F.       G.       H.       I.       J.       K.    One or more double carbon-carbon bonds (C=C)       -       A.       B.       C.       D.       E.       F.       G.       H.       I.       J.       K.    Spontaneous movement of molecules and ions from an area of high concentration to an area of low concentration.       -       A.       B.       C.       D.       E.       F.       G.       H.       I.       J.       K.    Movement of water down its concentration gradient.       -       A.       B.       C.       D.       E.       F.       G.       H.       I.       J.       K.    Solution that has a higher solute concentration on one side of a membrane than the other side.       -       A.       B.       C.       D.       E.       F.       G.       H.       I.       J.       K.    Solution that has a lower solute concentration on one side of a membrane than the other side.       -       A.       B.       C.       D.       E.       F.       G.       H.       I.       J.       K.    Transmembrane proteins assist passive transport of substances that cannot cross the lipid bilayer on their own down their concentration gradient.       -       A.       B.       C.       D.       E.       F.       G.       H.       I.       J.       K.    Transmembrane proteins move ions or molecules across a membrane against their concentration gradient.       -       A.       B.       C.       D.       E.       F.       G.       H.       I.       J.       K.    Substances that contain both hydrophilic and hydrophobic regions.

   A. Active transport B. Unsaturated hydrocarbon chain C. Hypotonic D. Hydrophilic E. Diffusion F. Facilitated diffusion G. Osmosis H. Hydrophobic I. Amphipathic J. Hypertonic K. Saturated hydrocarbon chain

2. Lipids _____.

   		are insoluble in water
   		are made from glycerol, fatty acids, and nitrogen
   		contain less energy than proteins and carbohydrates
   		are made by dehydration reactions
   		contain sulfur polymers

3. Match the following terms with their definition.

   -       A.       B.       C.       D.       E.       F.       G.    The phase of cell division in which replicated chromosomes are pulled apart.       -       A.       B.       C.       D.       E.       F.       G.    The phase of the cell cycle in which a cell spends most of its life.       -       A.       B.       C.       D.       E.       F.       G.    The phase of the cell cycle in which DNA is replicated.       -       A.       B.       C.       D.       E.       F.       G.    The structure made up of microtubules that pulls chromatids apart in late mitosis.       -       A.       B.       C.       D.       E.       F.       G.    Specialized structures where microtubules attach to chromosomes.       -       A.       B.       C.       D.       E.       F.       G.    Each of the double-stranded DNA copies in a replicated chromosome.       -       A.       B.       C.       D.       E.       F.       G.    Microtubules that interact with the plasma membrane and hold the spindle poles in place.

   A. S phase B. Kinetochore C. Interphase D. M phase E. Spindle apparatus F. Astral microtubules G. Sister chromatids

Answer 1

- Non polar, does not interact with water - Hydrophobic CH) - - Polar, interacts with water-> bydrophilic Con All single carbon bondo i daturated hydrocacbon one bondo 7 unsaturated or more hydro carbon double chain carbon bondou (B) Spontaneous movement of low concentration area molecules from his → Diffusion can Movement of water down its concentration gradient → osmosis (6) 1 6 Solution with higher salute Ton me side of membrane - concentration hypertonic (7) Solution with on one side lower solute concentration of membrane a hypotonic (c) Trong Transmembrane protein assist trambort of substance that can't bass lipid bilayer on their own down the concentration gradient → facilitated diffusion CF) & Transmembrane proteins more molecules against concentration gradient active Sinned with I transport CLA) cmScanner

Substances with both hydrophobic regions hydrophilic Amphipathic bathic (I) mena Lipids are insoluble in water made of glycer I and fatty & they may have nitrogen on sul neid but they are not entirely made as nitrogen or sulfur. Lipids are not bol of and they do not contain sulfur boleh Loloids have more energy C9 calor than carbohydrates and proteins. Lipoids are made dehydration synthesis so option 6, ④ are true rest un true. U Match the following: - © Phase of cell division in which chromosomes are pulled apart M phase where replicated I are, with pulled apart CD) replicated it is in chromosomes eal Sd ClimScanner

of life > The phase of most of its cell carries and grow. where it shende > Inte metabolic activit Interphase, here cell life out (c) The bhase in which DNA is replicated s phase CA) In som synthesis phase DNA replicates itself. The phase comes after G phase and tes followed by Grr phase (G,S, G₂) The structure made of microtubules that bello chromatido apart in lato mitosis. spindle apparatio is a cytoskeletal structure that helps to seg regule chromosomes CE) olan Specialized structures where microtubules cettach to chromosomes - Kinetochore, it is a protein structure, where spindle fibers attach during cell drision CB) Each of the double stranded DNA I copies in replicated chromosomes - Sister Chromatids (a). These are identical shocopies resulting from DNA replica domScanner o To

Microtubules interacting with plasma membrane to hold I spindle poles in blace > astral mitrotubules CF). These help in correct positioning of spondle apparatus. They are made of microtubules. Suanned with con Scanner