Consumers Digest

Need fast help on some biology questions please??????

13. Which structures allow oxygen to move from the lungs into the bloodstream? (Points: 5) veins bronchi alveoli arteries 14. Which of the following is a type of muscle tissue in the human body? (Points: 5) humoral digestive cardiac pulmonary 15. Which activity occurs when a flowering plant reproduces? (Points: 5) Egg cells move near the petals to catch the pollen. Sperm cells swim through the plant stem to reach the egg cells. A fertilized egg forms an embryo that is stored inside a seed. Pollen grains travel into the fruit to fertilize the embryo. 16. When something touches you, neurons in your nervous system carry the information to your brain. In what form is information carried through the nervous system? (Points: 5) in the form of myosin and actin as carrier proteins as enzymes as electrical and chemical signals 17. Two muscles are required to move a bone. What happens inside muscles when they contract? (Points: 5) Myosin heads attach to actin-binding sites and pull on actin filaments. Calcium combines with ATP to produce sarcomeres. Actin produces myosin and ATP. Calcium produces contractions. 18. Which statement best describes the difference between the life cycles of plants and animals? (Points: 5) Plants have a two-part life cycle, spending part of their life in a diploid phase and part in a haploid phase; humans spend their lives in a diploid phase and produce gametes that are haploid. Plants have a one-part life cycle and are entirely diploid; humans spend their lives in a haploid phase. Different plants have a different number of phases in their life cycle; humans always have two phases in their life cycle. Plants have a one-part life cycle and are entirely haploid; humans have a two-part life cycle, spending part of their life in a diploid phase and part in a haploid phase. 19. What is the function of the human immune system? (Points: 5) to regulate enzymes involved in growth and development to produce red blood cells within bone marrow to defend the body from invading pathogens to regulate the production of hormones within the body 20. Which of the following is an abiotic factor you might find in a desert? (Points: 5) a primary consumer sand a top predator a snake 21. Plants and animals require energy to live. Which statement best describes the difference between the way plants and animals obtain energy? (Points: 5) Producers such as plants do not require a source of energy; animals must consume food for energy. Plants produce ATP during photosynthesis; animals produce ATP during digestion. Both plants and animals absorb food from their surroundings. Plants produce glucose that can be broken down by cellular respiration; animals digest foods to obtain glucose for use in cellular respiration. 22. Which two factors would a biologist need to know to identify an ecosystem? (Points: 5) the biotic and abiotic factors in the area the populations and individuals that live in the area the weather and climate in the area the plants and animals in the area 23. A biologist is studying a food chain in an ecosystem. In the food chain, wolves eat foxes, the foxes eat rabbits, and the rabbits eat grasses. Which of those four groups of organisms is on the trophic level that holds the least amount of energy? (Points: 5) the foxes the wolves the rabbits the grasses 24. Which statement describes part of the water cycle? (Points: 5) Water from outer space evaporates and falls to the earth as precipitation. Water from the atmosphere is transpired by clouds. Once water enters the ocean it remains there as saltwater. Plants give off water through transpiration. 25. Which organisms hold the largest amount of energy in most ecosystems? (Points: 5) producers secondary consumers tertiary consumers decomposers

Public Comments

1. you obviously have access to the internet... you can google any of this.
2. 1. c 2.c 3. c but not sure 4. d 5. a 6. a (gametes is a fancy name for sperm and eggs) 7. c 8. b (abiotic means not-living) 9. d but not sure 10. a 11. b 12. d but not sure 13. a (plants) don't you have a book with all this info in it? anyway, good luck on your test...wish i had this when i was in school...