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Questions in biology

📝 Answered - Using Internet resources, discuss one disease of each of these three systems: (1) skeletal system, (2) muscular system, and (3) nervous system. Include causes, symptoms, and risk factors of each disease in your discussion.

📝 Answered - An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

📝 Answered - Complete the table. | Types of teeth | Location on the jaw | Function | |---|---|---| | Canines | The front four teeth on each jaw | | | | | | | Molars | | Crush and grind food, and break it into fine pieces |

📝 Answered - Bears and salmon have a predator-prey relationship. What would most likely happen to the bear population if the salmon population increased? A. stay the same B. decrease C. increase D. become extinct

📝 Answered - Write 'T' for true and 'F' for false statements. 1. The layer below the crust is called the mantle and it is made up of two parts - upper and lower mantle. 2. The atmosphere or the sphere of water comprises of all forms of water. 3. The atmosphere contains many gases like oxygen, nitrogen, and carbon dioxide. 4. Autotrophs can produce their food directly from the environment. 5. Construction, agriculture, mining, transportation and overpopulation are adversely affecting the abiotic environment. 6. The ecosystem is divided into plant kingdom and animal kingdom. Answer the following questions briefly. 1. What is a natural environment? 2. Define biodiversity. 3. List the layers of the lithosphere. 4. Why is oxygen important for living beings? 5. What are the two major elements of the biosphere?

📝 Answered - Fill in the missing word in the sentence below: Infants turn their heads when their cheek is touched; this is the _____ effect.

📝 Answered - People with diabetes often receive insulin injections. What effect does insulin have on the body? A. It raises blood-sugar levels. B. It lowers blood-sugar levels. C. It raises glucagon levels. D. It lowers glucagon levels.

📝 Answered - Which of the following best represents a simple food chain? A. Producer → secondary consumer → primary consumer B. Producer → primary consumer→ secondary consumer C. Primary consumer → secondary consumer → producer D. Secondary consumer → primary consumer → producer

📝 Answered - Which statement best describes a population that competes for reproductive purposes? A. Animals push each other to access water. B. Hyenas quarrel over a fresh animal kill. C. Squirrels and chipmunks collect food for the winter months. D. Members of the same species battle each other to protect their young.

📝 Answered - 1. Which of the following animals is a vertebrate? A. Spider B. Ant C. Frog D. Worm 2. Which animal is an invertebrate? A. Dog B. Bird C. Cat D. Butterfly 3. What do we call animals that eat only plants? A. Omnivores B. Herbivores C. Carnivores D. Insects 4. A lion is a good example of what kind of animal based on food? A. Omnivore B. Herbivore C. Carnivore D. Insectivore 5. Which of the following animals is omnivorous? A. Cow B. Human C. Eagle D. Snake 6. A fish is what kind of animal based on habitat? A. Terrestrial B. Arboreal C. Aquatic D. Desert 7. A monkey that lives in trees is classified as: A. Aquatic B. Arboreal C. Terrestrial D. Invertebrate 8. Which of the following animals lays eggs? A. Horse B. Cat C. Chicken D. Dog 9. What is asexual reproduction? A. Reproduction with two parents B. Reproduction with no food C. Reproduction with one parent only D. Reproduction through laying eggs 10. An animal that gives birth to live young is called: A. Viviparous B. Oviparous C. Arboreal D. Invertebrate