Biology 2021

 1. An activity that is NOT part of tidal flood mitigation in North Jakarta is…. A. Building a sea wall B. Reducing river sedimentation C. Raising surrounding buildings D. Building a river diversion E. Reducing groundwater use Answer C 

2. A trophic cascade is…. A. Fragmentation in an ecosystem B. Biomagnification in an aquatic ecosystem C. Top-down process in an ecosystem D. Increasing producer biomass E. Increasing nutrient supply in the ecosystem Answer D 

3. The correct statement related to the image above is…. A. a) connective tissue, b) columnar epithelium, c) cuboidal epithelium, d) squamous epithelium B. a) cuboidal epithelium, b) squamous epithelium, c) connective tissue, d) cylindrical epithelium C. a) cuboidal epithelium, b) connective tissue, c) cylindrical epithelium, d) squamous epithelium D. a) squamous epithelium, b) cuboidal epithelium, c) cylindrical epithelium, d) connective tissue E. a) cuboidal epithelium, b) cylindrical epithelium, c) squamous epithelium, d) connective tissue Answer E 

4. The rise of bread dough after adding yeast is caused by the yeast doing…. A. Respiration produces carbon dioxide and water, which makes the bread dough rise. B. Fermentation produces carbon dioxide and water, which makes the bread dough rise. C. Respiration produces carbon dioxide and lactate, which makes the bread dough rise. D. Fermentation produces carbon dioxide and alcohol, which makes the bread rise. E. Fermentation produces carbon dioxide and lactate, which makes the bread rise. Answer: E 

5. The causes of the dramatic decline in wildlife biodiversity on the island of Sumatra, except… A. Loss of natural habitat B. Establishment of conservation areas C. Invasive species invasion D. Habitat fragmentation E. Global climate change Answer: C 

6. The reactions of photosystem I and photosystem II occur primarily in… A. Grana B. Stroma C. Epidermis D. Thylakoid lumen E. Thylakoid membrane Answer: E

7. Mammals from the order Monotremes, such as Ornithorhynchus anatinus (platypus), have a distinctive structure, namely… A. hair B. mammary glands C. placenta D. egg-laying E. marsupials Answer D 

8. The advantage of a sexual reproduction strategy is… A. The resulting offspring have the same genetic composition as their parents. B. The offspring's genetic material is completely different from the parents'. C. More genetic variation is produced. D. Requires a large amount of energy for mating. E. Requires precise timing for mating. Answer D 

9. Methionine is an essential amino acid because it is needed in the synthesis of the molecule… A. Carbohydrates B. Fats C. Proteins D. Lignin E. Cellulose Answer C 

10. In increasing blood pressure, the sympathetic nervous system synergizes with…. A. Angiotensin II B. Norepinephrine C. Baroreceptors D. Blood proteins E. Parasympathetic nerves Answer B 

11. The prevalence of X-linked color blindness in males is 5%. If a normal man marries a mother who carries the color blindness factor and plans to have two sons, the probability that both children will be color blind is… A. 50% B. 25% C. 12.5% D. 6.25% E. 5% Answer C 

12. Nutrients in ionic form enter the roots through…. A. Endodermis B. Root hair C. Root tip D. Epidermis E. Root cap Answer C 

13. Cytokinesis begins in the… phase. A. Interphase B. Prophase I C. Prophase II D. Telophase I E. Telophase II Answer E 

14. Meiosis I in oogenesis will be completed at… A. Follicle degeneration B. Oocyte release from the ovary C. Primary oocyte becomes secondary oocyte D. Formation of a diploid chromosome set E. Formation of a corpus luteum Answer D 

15. A species is said to have undergone microevolution if… A. It undergoes large-scale morphological changes resulting in the formation of a new species B. It undergoes phenotypic changes in body parts resulting in the formation of a new species C. It undergoes permanent deletion of chromosomes or genes resulting in a new phenotype D. It undergoes changes in chromosomes or genes resulting in a new phenotype E. It undergoes deletion of certain organs resulting in a new phenotype Answer E