8. Replication takes place in what organelle? a Nucleus b Chloroplast c Ribosome
ID: 188306 • Letter: 8
Question
8. Replication takes place in what organelle? a Nucleus b Chloroplast c Ribosome d Golgi apparatus 9. To show an enzymatic reaction by blocking the active site, what molecules could be added to the solution? a Completive inhibitors b Cofactors c Noncompetitive inhibitors d More substance 10. What molecules make up the cellular membrane? a Lipids b Bacteria c Sugars d Carbohydrates 11. Which genetic descriptor refers to an organism’s actual appearance? a Genotype b Phenotype c Karyotype d Homozygote 12. If the sequence of one strand of DNA is ACCTGA, that the sequence in the other strand would be: a TGGACT b UGGACU c CGGAUC d TAAGCT 13. What is the product of meiosis in an animal cell? a Gametophyte b Spore c Gamete d Sporophyte 14. What organelle serves to package and transport molecules throughout the cell? a Mitochondrion b Golgi apparatus c Nucleus d Ribosome 15. What process describes the release of materials across the cell membrane? a Phagocytosis b Exocytosis c Active transport d Pinocytosis 16. What part of cell regulates the passage of substances into and out of the cell? a Golgi apparatus b Smooth endoplasmic reticulum c Nucleus d Cell membrane 17. How many chromosomes would be present in the gametes of a diploid organism with chromosome number of 46? a 46 b 69 c 23 d 92
Explanation / Answer
Please find the answers below:
Answer 8: Choice a (DNA replication takes place in the nucleus since the nuclear membrane has not yet dissolved)
Answer 9: Choice a (a competetive inhibitor competes with the original susbtrate to bind to the active site, thus blocking it for the entry of substrate and preventing the actual enzyme action)
Answer 10: Choice a (lipid remain the major part of the plasma membrane. The bilayer of the lipids make the membrane dynamic in nature and very mobile as well)
Answer 11: Choice b (karyotype refers to the physical make up of the chromosomes, genotype represents the genetic make up whereas phenotype represents the external appearance of the organism)