I am preparing my self for a biology exam and i am going through past papers. Unfortunately they do not supply us with the answers, which in one way is good.(since you have to actually work for your answers) All I am asking of you people is that you run over my answers and see if they are correct. Thank you for your time, much appreciated
Cheers
1. The production of ATP in eukaryote cells occurs mostly in the
A. Nucleus
B. Golgi Apparatus
C. Mitochondria
D. Rough endoplasmic reticulum
2. The overall production and preparation of proteins is managed
A. At the ribosomes and golgi apparatus.
B. In the nucleus and me golgi apparatus
C. In the mitochondria and the rough endoplasmic reticulum
D. In the nucleus and the mitochondria
3 Which of the following events happens during meiosis, but NOT during mitosis.
A. The whole process begins with replicated sets of sister chromatids.
B. The spindle fibres connect to chromatids at the centromere and separate them.
C. The homologous chromosomes become separated into different daughter cells.
D. Chromosomes line up during metaphase.
4. Which of the following statements is particularly true of 'active transport'?
A. It moves ions or molecules along their electrochemical gradient.
B. It consumes energy directly, mostly as ATP.
C. It handles large molecules.
D. It is relatively rare in cells.
5, The release of energy to form ATP within animal cells mostly happens in the
A. Endoplasmic reticulum
B. Golgi Apparatus
C. Chloroplasts
D. Mitochondria
6.An Elodea plant cell is placed in a hypertonic solution and plasmolysis occurs. This happens because;
A. There is a higher osmotic potential outside the cell.
B. There is a lower osmotic potential outside the cell.
c. There is a higher pressure potential outside the cell.
D. There is a lower pressure potential outside the eell.
7. The three forms of RNA differ in that
A. rRNA is not transcribed from DNA.
B. all tRNAs are identical
e. only mRNA is translated.
D. both rRNA and tRNA are structural components of ribosomes, but mRNA is not.
8. In flies, a gene controlling eye colour has 2 alleles; R (red eyes) and r (ruby eyes). A pure
breeding ruby-eyed female fly is crossed to a normal eyed male fly. In this cross the FI females
have normal eyes, but the male F I flies have ruby eyes. This means that.
A. The red eye allele is partially dominant.
B. all the offspring will have a genotype Rr.
C. half the offspring will be RR and half will be Rr
D. the ruby eye gene is sex-linked.
9. If the FI flies from this cross were allowed to breed reproduce an F2 population then the
offspring would include:
A. Only red eyed females and ruby-eyed males.
B. A mixture of ruby and red eyed males and females.
C. All ruby-eyed flies
D. All red-eyed flies.
10. The process within protein synthesis called translation occurs mainly at the
A. Ribosomes
B. Smooth endoplasmic reticulum
C. Golgi apparatus
D. Mitochondria
11. The 3' end of the newly synthesised DNA strand is where a
A. hydroxyl group is attached to carbon 3 of the deoxyribose sugar.
B. phosphate group is attached to carbon 3 of the deoxyribose sugar.
C. hydroxyl group is attached to a nitrogenous base.
D. hydroxyl group is attached to a ribose sugar.
12. The following is the sequence of bases on a strand of DNA: 5’-ATGGAGC-3’.What would be
the sequence of bases on the complementary strand?
A. 3'-GCTGCAT-5'
B. 3'-CGACGTA-5'
C. 3'-TACGTCG-5'
D. 3'-UACGUCG-5
13. Adaptive radiation is a process that refers to
A. a population suddenly spreading out over a broader geographic area
B.a sudden population explosion of a particular species as new habitat becomes available.
C. A relatively rapid divergence of many new species from a single lineage
D.A sudden increase in the genetic diversity within a species
14.the sequence of amino acids in a protein is referred to as its
A. Primary structure
B. Secondary structure
C. Tertiary structure
D. Quaternary structure.
15. A disulfide bridge:
A. connects amino acids in a protein strand through hydrogen bonding.
B. connects the two strands of DNA together in a double helix through covalent bonding.
C. can connect two different sections of a pr0tein strand together through covalent bonding.
D. is an important component of a protein's quaternary structure.
16. Hydrogen bonding is important in all levels of protein structure except for;
A. Its primary structure
B. Its secondary' structure
C. tertiary structure
D. It is important in all levels of protein structure.
17. Dolphins, fish and extinct all have similar body shapes adapted to
This is an example of;
A. Divergent evolution
B. Convergent evolution
C. Homologous structures
D. Speciation.
18. The energy to run ATP synthase, which produces ATP within a cell comes directly from;
A. glucose
B. an Na+/K+ electrochemical gradient
C. NADH
D. an H+ electrochemical gradient.
19. During respiration most CO2 is generated during;
A. glycolysis
B. the electron transport chain
C. the citric acid cycle.
D. ATP synthesis
my answers
1. C
2. A
3. C
4. B
5.D
6.B
7. ?
8. D
9. ?
10. A
11. B
12. ?
13. A
14.A
15. D
16. A
17. B
18. D
19. D
2. C
6.A
7. E
8. D
9. B
11. A
12. C
13. D
14.A
15. C
19. C
If I agreed with your answers, I deleted it, but if I didn't I gave you my answer choice, which was most of your work. Try not to do this again because I will ignore it, and the other people who come on this site and Jiskha's experts will do the same thing.
I can definitely help you go through your answers. Let's go question by question:
1. The production of ATP in eukaryote cells occurs mostly in the:
Answer: C. Mitochondria
2. The overall production and preparation of proteins is managed:
Answer: A. At the ribosomes and golgi apparatus.
3. Which of the following events happens during meiosis, but NOT during mitosis:
Answer: C. The homologous chromosomes become separated into different daughter cells.
4. Which of the following statements is particularly true of 'active transport':
Answer: B. It consumes energy directly, mostly as ATP.
5. The release of energy to form ATP within animal cells mostly happens in the:
Answer: D. Mitochondria
6. An Elodea plant cell is placed in a hypertonic solution and plasmolysis occurs. This happens because:
Answer: B. There is a lower osmotic potential outside the cell.
7. The three forms of RNA differ in that:
Answer: D. both rRNA and tRNA are structural components of ribosomes, but mRNA is not.
8. In flies, a gene controlling eye color has 2 alleles; R (red eyes) and r (ruby eyes). A purebreeding ruby-eyed female fly is crossed to a normal-eyed male fly. In this cross, the F1 females have normal eyes, but the male F1 flies have ruby eyes. This means that:
Answer: D. the ruby eye gene is sex-linked.
9. If the F1 flies from this cross were allowed to breed and reproduce an F2 population, then the offspring would include:
Answer: B. A mixture of ruby and red-eyed males and females.
10. The process within protein synthesis called translation occurs mainly at the:
Answer: A. Ribosomes
11. The 3' end of the newly synthesized DNA strand is where:
Answer: A. a hydroxyl group is attached to carbon 3 of the deoxyribose sugar.
12. The following is the sequence of bases on a strand of DNA: 5’-ATGGAGC-3’. What would be the sequence of bases on the complementary strand?
Answer: B. 3'-CGACGTA-5'
13. Adaptive radiation is a process that refers to:
Answer: C. A relatively rapid divergence of many new species from a single lineage.
14. The sequence of amino acids in a protein is referred to as its:
Answer: A. Primary structure
15. A disulfide bridge:
Answer: C. can connect two different sections of a protein strand together through covalent bonding.
16. Hydrogen bonding is important in all levels of protein structure except for:
Answer: A. Its primary structure
17. Dolphins, fish, and extinct all have similar body shapes adapted to. This is an example of:
Answer: B. Convergent evolution
18. The energy to run ATP synthase, which produces ATP within a cell, comes directly from:
Answer: D. an H+ electrochemical gradient.
19. During respiration, most CO2 is generated during:
Answer: B. the electron transport chain.
Please note that I have provided the correct answers alongside your choices. You can mark your answers accordingly and compare them to these correct answers. Good luck with your biology exam!