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2023-2024 BIO251 Biology Remediation Exam With Answers (85 Solved Questions)

2023-2024 BIO251 Biology Remediation Exam With Answers allows you to simulate the exam day experience with past tests.

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    BIO251 - EXAM 2 REMEDIATION 2023/2024 WITH ANSWERS GRADED PASS Haploid Number of Chromosomes In Humans - - answer - 23 Control center of the cell; a part of the cell containing DNA and RNA and responsible for growth and re production - - answer - Nucleus Processes and transports proteins made at attached ribosomes; synthesizes phospholipids - - answer - Rough Endoplasmic Reticulum (RER ) Fatty acid and steroid synthesis; detoxifies toxic substances - - answer - Smooth Endoplasmic Re ticulum (SER) A cell organelle that helps make and package materials to be transported out of the cell - - answer - Golgi Complex Cell organelle filled with enzymes needed to break down certain materials in the cell - - answer - Lysosomes Produce hydrogen per oxide, detoxifies harmful substances, oxidizes fatty acids, and protects cell from free radicals - - answer - Peroxisomes - Hollow, cylindrical organelle that disposes of unnecessary and damaged proteins

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    - Contain enzymes that break down tagged, targeted pro teins into short peptides and amino acids - - answer - Proteasomes - Located near the nucleus and help to organize cell division - Form mitotic spindle during mitosis - - answer - Centrioles A structure in cells containing two centrioles from which the spindl e fibers develop and organized - - answer - Centrosome Point of growth for cilium or flagellum - - answer - Basal Body Cell component responsible for energy production; powerhouse of the cell - - answer - Mitochondria Organelle responsible for protein synthesis - - answer - Ribosomes All the fluid and components between the nucleus and the cell m embrane; includes the cytosol as well as the cytoskeleton - - answer - Cytoplasm Phospholipid bilayer that surrounds all cells and regulates what enters and leaves the cell; also provides protection for cells. - - answer - Cell membrane (plasma membrane) Plasm a membrane layers composed of phospholipid molecules arranged with polar heads facing the outside and nonpolar tails facing the inside .

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    Contains Transmembrane proteins, Peripheral proteins, Cholesterol, and sugar (glycolipids and glycoproteins) - - answer - Phospholipid Bilayer Integral proteins in the cell membrane, that extends all the way through the membrane touching both the ICF and ECF - - answer - Transmembrane Proteins The proteins of a membrane that are not embedded in the lipid bilayer; they are appe ndages loosely bound to the surface of the membrane. - - answer - Peripheral Protein Holds phospholipids still and can stiffen membrane - - answer - Cholesterol Does not use ATP as an energy source, occurs from high to low concentration. Includes: Simple diff usion, facilitated diffusion, and osmosis. - - answer - Passive Transport Moves along concentration gradient, from higher to lower concentration - - answer - Simple Diffusion The transport of substances through a cell membrane along a concentration gradient with the aid of carrier proteins - - answer - Facilitated Diffusion

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