Question

1.What is the major component of blood plasma? a Nutrients b Ions c Water d Gases 2. How many layers of phospholipids does the cell membrane contain? a 1 b 2 c 4 d 3 3. Which substance stores polysaccharides in plants? a Sucrose b Glycogen c Glucose d Cellulose 4. An important concept in DNA and RNA structure is complementary base pairing. Which tow bases are incorrectly paired? a T-U b A-T c C-G d A-U 5. If the zygomatic arch was broken, where is this fracture located? a Wrist b Shoulder c Knee d Face 6. Aerobic respiration occurs in the presence of what necessary molecule? a Oxygen b Carbon dioxide c Water d Hydrogen 7. What is the structural difference between a prokaryotic cell and a eukaryotic cell? a Eukaryotic cell do not contain a nucleus b Prokaryotic cells do not contain energy-related organelles. c Eukaryotic cells do not contain energy-related organelles. d Prokaryotic cells do not contain a nucleus. 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 18. Many single-celled protists have a projection called a flagellum. What is its purpose? a Food intake b Propulsion c Homeostasis d Defense 19.Where in the cell does the Krebs’s cycle take place? a Nucleus bMitochondrial matrix c Chloroplast dCytoplasm 20. Which method of glucose conversion generates the most usable and efficient from ATP energy within the human body? a Aerobic respiration b Fermentation conversion c Anaerobic respirations d Lactic acidosis 21. The cellular membrane consists of a bilayer of what substance? a Nucleic acids b Carbohydrates c Proteins d Phospholipids 22. Many solute particles must use a channel protein to move from a high concentration inside the cell to a lower concentration outside the cell. What is this process called? a Facilitated diffusion b Enzymatic transport c Active transport d Osmosis 23. What type of cell are bacteria? a Complex b Prokaryotic c Eukaryotic d Simple 21. What term describes diffusion across a biological membrane requiring no cellular energy? a Facilitated transport b Protein transport c Passive transport d Active transport 25. If a strand of DNA has sequence ATGCAGTAG, what would be the sequence of its complementary strand? a ATGCACTAG b TACGTCATC c GCATCTCGA d CGTACAGCT 26. A hypertonic solution has___________ concentration of solutes than the cell. a A lower b A higher c A negative d The same 27. Each species has characteristic chromosome number and most of their cells have complete set of these chromosomes. However in the life cycle of humans only sperm and eggs have the ___________ number of chromosomes. a. Diploid b. Polyploid c. Haploid d. Monoploid 28.How does the structure of DNA relate to the coding of hereditary information? a DNA codes hereditary information on both strands if they have parallel polarity. b The amount of proteins the DNA codes depends on the number of times the double helix spirals c The sequence of nucleotides on the strands of DNA enables genetic information to be coded. d DNA codes genetic information only when the two strands of the double helix unwind and straighten out.

Answer 1

Please find the answers below:

Answer 1: Choice c (plasma contains water as the major fraction, making 99% of the total plasma volume. The rest of the fraction i.e. nearly 1% is made up of cells)

Answer 2: Choice b (the plasma membrane contains two layers of phospholipids and this is why it is called a bilayer of phospholipids)

Answer 3: Choice d (cellulose remains the major form of storage of glucose in plants, whereas glycogen in animals)

Answer 4: Choice a (adenine always binds with either thymine or uracil, whereas the cytosine binds with guanine)