This quiz works best with JavaScript enabled. Home > Science > Biology > Biology – Quiz 32 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Biology Quiz 32 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the function of a cell wall? A) To protect and support the cell. B) To perform different functions in each cell. C) To prevent water from passing through it. D) To prevent oxygen from entering the cell. Show Answer Correct Answer: A) To protect and support the cell. 2. ..... can include the boundaries in which organisms live, the resources organisms compete for, the climate, and competition within the ecosystem. A) Limiting factors. B) Carrying capacity. C) Biotic factors. D) Ecosystems. Show Answer Correct Answer: A) Limiting factors. 3. When a snails shell is tapped it retreats into it. The more you tap the shell the longer it takes to retreat and eventually it stops altogether, why is this an advantage to the snail? A) Gives them exercise. B) Saves energy once they have learnt their is no danger. C) They don't like being in their shell. D) Its random. Show Answer Correct Answer: B) Saves energy once they have learnt their is no danger. 4. PKU is the abbreviated name for ..... A) Phenylketonuria. B) Pheynlketonuria. C) Phenylketanuria. D) Phenylketonaria. Show Answer Correct Answer: A) Phenylketonuria. 5. A symbiotic relationship where one organism benefits and the other is harmed. A) Parasitism. B) Mutualism. C) Commensalism. D) Predation. Show Answer Correct Answer: A) Parasitism. 6. If you look at a cell under a microscope, which phase is it MOST likely to be in? A) Cytokinesis. B) M phase. C) Interphase. D) G1 Phase. Show Answer Correct Answer: C) Interphase. 7. Pulmonary veins transport A) Red oxygenated blood. B) Deoxygenated blood from the heart to the lungs. C) Oxygenated blood from the lungs to the heart. D) Bluish red deoxygenated blood. Show Answer Correct Answer: C) Oxygenated blood from the lungs to the heart. 8. Which of these best describes the correct sequence in the expression of a trait? A) Trait $\rightarrow$ gene$\rightarrow$ enzyme. B) Gene$\rightarrow$ protein $\rightarrow$ trait. C) Gene $\rightarrow$ trait $\rightarrow$ DNA. D) Protein $\rightarrow$ gene $\rightarrow$ trait. Show Answer Correct Answer: B) Gene$\rightarrow$ protein $\rightarrow$ trait. 9. Number of chambers in human heart is A) 2. B) 3. C) 4. D) 1. Show Answer Correct Answer: C) 4. 10. Which region in the leaf of a green plant contains phloem? A) Palisade mesophyll. B) Spongy mesophyll. C) Upper epidermis. D) Vascular bundle. Show Answer Correct Answer: D) Vascular bundle. 11. How is the doubling of chromosomes prevented in each generation? A) Meiosis is a halving mechanism. B) Mitosis occurs. C) Body cells combine to form a zygote. D) All gametes are diploid. Show Answer Correct Answer: A) Meiosis is a halving mechanism. 12. How many chambers does a frog's heart have? A) 1. B) 2. C) 3. D) 4. Show Answer Correct Answer: C) 3. 13. TT, tt, PP, pp, SS, ss are examples of alleles that are? A) Homozygous. B) Heterozygous. C) Different. D) Homologous. Show Answer Correct Answer: A) Homozygous. 14. The kinases that drive the cell cycle are actually present at a constant concentration in a growing cell, but much of the time they are inactive. To be active, kinases must be attached to a A) Centromere. B) Centrosome. C) Chromosome. D) Cyclin. Show Answer Correct Answer: D) Cyclin. 15. What is trisomy 21? A) Too many chromosomes at Chromosome 21 (Down Syndrome). B) Too many chromosomes at Chromosome X (Triple X-Syndrome). C) A single chromosome at Chromosome 21. D) Non-disjunction of Chromosome 56. Show Answer Correct Answer: A) Too many chromosomes at Chromosome 21 (Down Syndrome). 16. What does the word polly means? A) Many. B) Things that hold together. C) A part of something. D) Polymer. Show Answer Correct Answer: A) Many. 17. Which statement best describes the flow of energy as it passes through the organisms in the pyramid (read carefully) A) Energy flows through the organisms from bottom to top and increases at each level. B) Energy flows through the organisms from bottom to top and stays the same at each level. C) Energy flows through the organisms from top to bottom and inc. at each level. D) Energy flows through the organisms from bottom to top and decreases at each level. Show Answer Correct Answer: A) Energy flows through the organisms from bottom to top and increases at each level. 18. What is a Heterotroph A) Eats only Autotrophs. B) Eats Autotrophs and other Heterotrophs. C) Makes their own food. D) Uses the Sun to make it's food. Show Answer Correct Answer: B) Eats Autotrophs and other Heterotrophs. 19. Which choice represents the correct order from biggest to smallest? A) Ecosystems-cells-biosphere-organism-DNA/genes. B) DNA/genes-cells-organisms-ecosystems-biosphere. C) Biosphere-ecosystems-organisms-cells-DNA/genes. D) Organisms-DNA/genes-biosphere-ecosystems-cells. Show Answer Correct Answer: C) Biosphere-ecosystems-organisms-cells-DNA/genes. 20. ORDER OF WHEAT A) SAPINDALES. B) POACEAE. C) POALES. D) PRIMATA. Show Answer Correct Answer: C) POALES. ← PreviousNext →Related QuizzesScience QuizzesBiology Quiz 1Biology Quiz 2Biology Quiz 3Biology Quiz 4Biology Quiz 5Biology Quiz 6Biology Quiz 7Biology Quiz 8Biology Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books