Question

25. Chloroplasts are        a. the sites of photosynthesis for eukaryotic cells

b. the sites of photosynthesis for prokaryotic cells        c. the sites of protein synthesis

d. the sites of ATP synthesis in eukaryotic cells              e. (a) and (b)

26. The nucleus of a cell              a. holds the code for protein synthesis

b. is the site of ATP synthesis                  c. is the site of photosynthesis for eukaryotic cells

d. is the carrier for most of the hereditary information for eukaryotic cells

e. both (a) and (d)

27. Which of the following is false regarding ATP, ADP, and the reaction

ADP + inorganic phosphate produces ATP?              a. the reaction takes place in all living cells

b. the reaction requires the cells to spend energy        

c. energy for this reaction can come from H⁺ ions stored on one side of the membrane

d. energy from this reaction can come from energy stored in other molecules, e.g. glucose

e. none of the above is false: all are true

28. Which of the following components (parts) are found in plant cells but not in animal cells?

1. Mitochondria      b. cell walls     c. chloroplasts             d. all of the above       e. (b) and (c) only

29. Write the overall equation for cellular respiration and write the name of each molecule next to its formula

30. Which of the following is the correct sequence of the 3 main stages of cellular respiration?

1. Glycolysis, citric acid (Krebs) cycle, carbon fixation
2. Glycolysis, citric acid (Krebs) cycle, oxidative metabolism/electron transport/chemiosmosis
3. Glycolysis, fermentation, citric acid (Krebs) cycle
4. Glycolysis, Calvin cycle, oxidative metabolism/electron transport/chemiosmosis
5. Hydrolysis, citric acid (Krebs) cycle, oxidative metabolism/electron transport/chemiosmosis

31. How many ATP molecules are produced in Stage 1 of cellular respiration?

1. 0              b. 2      c. 10               d.32                 e. 72

32.   How many ATP molecules are produced in Stage 3 of cellular respiration?

2. 0              2      c. 10               d.32                 e. 72

33. Which of the following is false regarding stage 3 of cellular respiration?

1. The energy stored in NADH is used to store hydrogen ions inside the mitochondrial membranes
2. Hydrogen ions move across the mitochondrial membranes, and their stored energy is used to make ATP
3. Glucose is split                d. hydrogen ions are added to electrons and oxygen to make water

e none of the above is false—all are true

34. Which of the following is the correct sequence of the 3 stages of photosynthesis?

1. Light absorption, electron transport/chemiosmosis, carbon fixation/Calvin cycle
2. Light absorption, electron transport/chemiosmosis, Krebs (citric acid) cycle
3. Light absorption, carbon fixation/Calvin cycle, electron transport/chemiosmosis
4. Light absorption, Krebs (citric acid) cycle, oxidative metabolism
5. Glycolysis, electron transport/chemiosmosis, carbon fixation/Calvin cycle     

                           

35. Which of the following does not occur in the second stage of photosynthesis?

1. Energy from light is absorbed by chlorophyll
2. Some of the energy originally in light is used to split water
3. Oxygen is given off
4. Some of the energy from light is used to trap hydrogen ions inside the chloroplast
5. When hydrogen ions pass across the membrane of the chloroplast, their stored energy is used to make ATP

36. Which of the following is false if HCl (hydrochloric acid) is added to an alkaline solution?

1. The pH drops                   b. the concentration of hydrogen ions rises

c. the solution becomes more alkaline   d. all of the above are false.    e. none of the above is false

37. Which of the following is false for mitosis?             a. diploid cells produce two identical copies

2. Sperm cells are made using this process            c. Amoeba and Paramecium reproduce this way

d. animals grow using this process         e. human skin cells are replaced by mitosis

38. Which of the following is false regarding meiosis?

1. Meiosis take place in ovaries and testicles         b. 4 haploid cells are produced

c. sperm, egg cells, and pollen are made using this process

d. the cells produced are identical to each other          

e. in humans, cells produce by meiosis have 23 chromosomes

  

39. Some organisms are able to reproduce without sex, masking identical copies of themselves. What is the advantage of sexual reproduction compared with asexual (non-sexual) reproduction?

1. Sexual reproduction produces more offspring than asexual reproduction does
2. Sexual reproduction involves less energy than asexual reproduction
3. Sexual reproduction produces non-identical offspring, so some are more likely to survive in varying environments
4. Sexual reproduction produces non-identical offspring, so all are more likely to survive in varying environments            e. none of the above

40. Which of the following is/are true of DNA?             a. it is shaped like a twisted ladder

2. It is a double helix           c. the pairs A and T, C and G, are joined by hydrogen bonds

d. the upright parts of the ladder are made of alternating sugars and phosphates

e. All of the above

   

41. Each individual carries two factors (genes) for each characteristic, and these are separated when the sex cells are formed. This is the main theme of Mendel’s                   a. principle of dominance

b. principle of independent assortment       c. principle of segregation

d. law of blending inheritance          e. theory of spontaneous generation of life

Answer 1

1) Chloroplasts are- (a) the sites of photosynthesis in eukaryotic cells.

Chloroplasts are the sites of photosynthesis and are present in eukaryotic cells mainly in plants and algae.

2) The nucleus of a cell- (a) holds the code for protein synthesis. (b) is the carrier for most of the hereditary information for eukaryotic cells.

3) All of the statements regarding ADP, ATP and the reaction are true. Hence, the correct option is (e).

4) The components that are found in plant cells but not in animal cells are cell wall and chloroplast. These two structures are specifically present in plant cells which gives a rigid structure and green colour to the plant cells. Hence, the correct option is- (e) b and c only.