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The polymers that are responsible for determining and regulating the genetic characteristic of an organism called nucleic acids. Nucleic acids are present in all living cells. They derive their name due to their existence inside the nucleus and acidic nature. There are two nucleic acids DNA (Deoxyribonucleic acid) and RNA (ribonucleic acid).
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- what does not require cellular energy? movement of water across the cell membrane movement of organelles driving endergonic reactions swimming movements of cellsThe role of proteins in a cell include the following (choose all that apply) identifying self and distinguishing it from an invading organism none of the answers is correct O making up the phospholipid bilayer O transporter molecules embedded in the cell membrane O a means of locomotionWhich statement below is corredt when comparing plant and animal cells? O Plant cells only have a cell wall, and animal cells only have a plasma membrane. Plant cells only have a plasma membrane, and animal cells only have a cell wall. Both plant and animal cells have a plasma membrane, and plant cells also have a cell wall. O Both plant and animal cells have a plasma membrane and a cell wall. O Both plant and animal cells have a cell wall, but only animal cells have a plasma membrane. 1 ntc
- The diagram below shows three different proteins embedded in a cell membrane, as well as the concentration gradient surrounding the cell high concentration channel protein carrier protein lipid bilayer 1 21 3 low concentration Which of the following statements correctly states the process shown in the diagram? O The process labeled 1 shows how cells can easily move molecules with the concentration gradient using high energy molecules. The process labeled 2 shows how cells move molecules against the co entration gradient without needing hic energy molecules The process labeled 3 shows how cells use energy to facilitate the active transport of molecules against the concentration gradient All three processes show how molecules freely move in and out of the cell regardless of the concentration gradient or available en PreviousWhich of the following is NOT correct: The quantity of ER inside a cell fluctuate depending on cell size ER allowing molecules to move from one part of the cell to another The ER function is act as an internal transport system short polypeptides containing less than 20-30 amino acids called .. O oligopeptides O polypeptide O long chain of proteinIn the cell membrane, a bilayer exist wherein hydrophobic ends occupy the outside layer of the micelle O phospholipid hydrocarbon chains (tails) face each other ions freely move in and out of the membrane regardless of concentration gradient diffusion is the only mechanism in which nutrients can go in and out of the cell Enzymes are important because they make biochemical reactions possible they are insoluble in aqueous solution they produce more substrates that are needed in the body they block inhibitors Penicillin works as an antibiotic by A. inducing allosteric inhibition in lipases B. lowering the energy of activation of reactants C. attacking the double bond present in saturated fats D. inhibiting the enzyme that forms cell walls of bacteria O O O O O O O O
- Which of the following are NOT found in plant cells? O Chloroplasts Centrioles Nucleus O Cell WallWhich of the following statement is NOT true about the cell wall of various organisms? O The cell wall of the plants is made of cellulose O The cell wall of insects is made of cellulose O Sugar and peptidoglycan are attached to the cell wall of bacteria O The cell wall of fungi is made of chitinWhat is the function of the cell membrane? To control the substances that enter and leave the cell O To carry out respiration O To contain the genetic information O To synthesise proteins
- What is a property that is shared by microtubules and actin filaments? Polymer assembly requires that subunits contain a bound ATP Polymer assembly requires that subunits contain a bound GTP The polymer is assembled from subunits that are protein monomers Assembly and disassembly occurs only at one end of the polymer Subunit assembly is followed by nucleotide hydrolysisYou add ATP, microtubules, and vesicles to a slide. You don't observe any movement of the vesicles under the microscope. What did you do wrong? need to use TEM instead O need to add ADP need to add dynein need to use actin insteadT 1 T T T T LL F FL 1 TI GD F N 1. ** 2 13 movement is powered by ATP You can couple passive transport with active transport in order to move a solute against its gradient F Solar energy was likely the source of energy for the origin of life ||| V= 14 **** 5 62 F Catabolism is when smaller units come together to make a larger molecule ATP is the energy currency of the cell because lots of energy can be stored between the phosphate groups Acetyl CoA is the product of glycolysis