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Questions in biology

[Answered] 9. What is peristalsis? A. Rhythmic contraction of digestive muscles B. Movement of the tongue C. Breakdown of starch D. Production of bile 10. Which part temporarily stores food and mixes it with digestive juices? A. Liver B. Colon C. Stomach D. Small intestine 11. Which of the following is NOT a digestive gland? A. Liver B. Pancreas C. Salivary gland D. Small intestine 12. What does the esophagus do? A. Stores waste B. Absorbs nutrients C. Chemically digests food D. Connects mouth to stomach 13. A function of the digestive system is: A. Pumping blood B. Producing oxygen C. Breaking down food D. Removing carbon dioxide 14. Which enzyme digests protein in the stomach? A. Lipase B. Pepsin C. Amylase D. Lactase 15. What should be avoided to prevent ulcers? A. Stress and spicy foods B. Proper hygiene C. Fiber-rich diet D. Water 16. Which part of the digestive system absorbs water? A. Liver B. Stomach C. Gall bladder D. Large intestine 17. What does the gallbladder do? A. Store bile B. Produce insulin C. Absorb nutrients D. Digest carbohydrates 18. Which food group helps regulate bowel movement? A. Fat B. Fiber C. Sugar D. Protein 19. Which disease is linked to contaminated food and poor hygiene? A. Ulcer B. Obesity C. Constipation D. Food poisoning 20. What is the role of enzymes in digestion? A. Store food B. Protect organs C. Absorb nutrients D. Speed up digestion C. Modified True or False: Directions: Write TRUE if the statement is correct. If FALSE, change the underlined word to correct the sentence. Write your answer in the space provided (15 items) 1. The large intestine is the main site of nutrient absorption. 2. Mechanical digestion uses enzymes to break down food. 3. Peristalsis pushes food through the digestive tract. 4. The liver stores bile until it is needed in the small intestine. 5. Pepsin breaks down carbohydrates in the mouth. 6. The pancreas secretes enzymes and hormones. 7. The esophagus absorbs nutrients. 8. The stomach secretes hydrochloric acid and enzymes. 9. Villi are found in the large intestine. 10. Bile is produced by the pancreas. 11. Constipation is caused by too much water in the stool. 12. Salivary glands begin the chemical digestion of starch. 13. Lactase breaks down fats into smaller molecules. 14. Heartburn is caused by acid reflux into the esophagus. 15. Proper handwashing can help prevent digestive diseases.

[Answered] 9. Why is it fair to say that genetically modified crops are being promoted without full understanding of their impact? (a) Because farmers requested GM crops for better productivity. (b) Because traditional crops no longer grow without chemical support. (c) Because the chemical industry no longer markets pesticides. (d) Because their long-term effects have not been fully studied.

[Answered] What action does the infraspinatus muscle perform in the shoulder?

[Answered] List the names of plants that you have seen in your school, park, or near your home. Identify what types of plants they are - tree, shrub, herb, grass, climber, or creeper.

[Answered] 6. Transpiration is a process in which plants (a) receive water from soil. (b) absorb water vapour from air. (c) prepare food from water. (d) release water vapour.

[Answered] Animals Crossword Puzzle Across 1. Big animal that has one horn 2. This animal has a very long neck 3. Man's best friend 4. Lives in the cold and waddles 5. Slow moving and has a shell 6. Striped animal that looks like a horse 7. Can swim under water, walk on land and has a big bite Down 1. This animal has a long trunk 2. This animal likes to eat carrots 3. This animal loves bananas 4. Some say this animal has nine lives 5. Has big ears and likes to hop 6. King of jungle Classify the animals according to types of ears: internal or external for - Elephant, sparrow, pigeon, peacock, cat, duck, lizard, mouse, camel, pig, frog, buffalo, hen.

[Answered] Auxins, cytokinins, gibberellins, abscisic acid, and ethylene are significant for plant growth. Which group do they fall into? Answer Options: A. Hormones B. Enzymes C. Vascular tissues D. Probiotics

[Answered] If the mutation that caused dark coloration occurred around 1819, why do you think there were still so few black moths in 1848 when the first dark moth was observed in the wild? A. There was no selective advantage to being dark colored prior to the industrial revolution. B. Dark colored moths cannot be seen at night. C. Dark colored moths are poor fliers. D. Light colored moths preyed on the larvae of dark colored moths.

[Answered] Which of the following describes the initiation step of translation? A. A ribosome releases a polypeptide strand. B. Ribosomal RNA recognizes a specific region of mRNA. C. A peptide bond forms between two amino acids. D. Transfer RNA delivers an amino acid to a ribosome.

[Answered] The word antibiotic was originally defined, in 1942, as being any substance produced by a microorganism that inhibits the growth of another microorganism. How does the modern definition of antibiotic differ? A. An antibiotic is any chemical, natural or synthetic, that inhibits the growth of a microorganism. B. An antibiotic is a synthetic chemical that inhibits the growth of infectious bacteria. C. An antibiotic is a chemical that damages the DNA of infectious bacteria. D. An antibiotic is any chemical that inhibits the growth of any organism, not just a microorganism.