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The smaller unit molecules (monomers) which combine to form proteins and polypeptides are called




Question;1. A testable explanation of a broad range of related phenomena that is relied upon by scientists with a high degree of confidence is referred to as ________. (Points: 5) an acta lawa theorya dogma;2. The smaller unit molecules (monomers) which combine to form proteins and polypeptides are called ____________. (Points: 5) fatty acidsmonosaccharidesamino acidsnucleotides;3. Enzymes, some hormones, and structural molecules like keratin and collagen are examples of ______________. (Points: 5) nucleic acidscarbohydrateslipidsproteins;4. An atom that has gained or lost electrons is referred to as _______________. (Points: 5) an iona moleculean isotopean element;5. Cell membranes consist of _____________. (Points: 5) a complex carbohydrate webbinga flexible sheet of proteina network of microfilaments and microtubulesa double layer of phospholipids;6. Which of the following transport mechanisms requires ATP to move materials across a plasma membrane? (Points: 5) simple diffusionfacilitated diffusionosmosisactive transport;7. A cell is placed in a solution. If the cell is observed to shrink, the solution must be _________________ relative to the interior of the cell. (Points: 5) hypertonichypotonicisotonictoxic;8. Consider the following two statements: (1) " Energy can neither be created nor destroyed, but it can be changed in form."(2) "If energy changes form, the change is never 100% efficient."(Points: 5) These statements are expressions of the 1st and 2nd energy laws.These statements don't apply to any cells.These statements are both false.These statements apply only to eukaryotic (higher) cells.;9. The part of an enzyme that "fits" its substrate is called its __________ site. (Points: 5) repressorpromoteractiveoperator;10. In higher cells, cellular (aerobic) respiration with production of adenosine triphosphate (ATP) is carried out in the _______________. (Points: 5) mitochondrionnucleusplasma membraneendoplasmic reticulum;11. Meiosis differs from mitosis because _______________. (Points: 5) meiosis results in diploid daughter cellsmeiosis involves two cell divisionsDNA replicates before the start of meiosismeiosis occurs all over the human body;12. Leaves are green because ____________. (Points: 5) carotenoids absorb green lightcarotenoids reflect green lightchlorophylls a and b absorb green lightchlorophylls a and b reflect green light;13. Many human traits such as eye color and height are controlled by _______________. (Points: 5) sex-linked inheritanceMendel's lawspolygenic inheritanceincomplete dominance;14. ______________ is a nucleic acid base found in ribonucleic acid (RNA) but not in deoxyribonucleic acid (DNA). (Points: 5) Thymine (T)Guanine (G)Cytosine (C)Uracil (U);15. Which of the following is not a possible outcome of recombinant deoxyribonucleic acid (rDNA) technology? (Points: 5) mass production of human hormones by bacteriaestimating the age of a rock sampleincreasing the production of hardier cropscorrecting a human disease;16. The polymerase chain reaction (PCR) is a method of ________________. (Points: 5) mass-producing proteinsspeeding up the production of mRNA proteinsmaking multiple identical copies of small amounts of DNAdecoding the nucleotide sequence of a gene;17. Which of the following is most likely to cause a cell to become cancerous? (Points: 5) mutation of a tumor supressor genepremature apoptosiscytokinesiscontact inhibition;18. The normal complement of sex chromosomes for a human male is ___________. (Points: 5) YYXYXXXXY;19. An allele is ____________. (Points: 5) an alternate form of a genea gene found on different chromosomes (e.g., on chromosome numbers 1 and 5)a gene located at two different positions on the same chromosomea sex cell;20. A visual display of metaphase chromosomes arranged by size, shape, and banding pattern is ______. (Points: 5) a genetic disordera centrosomea karyotypeamniocentesis


Paper#63193 | Written in 18-Jul-2015

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