LIFE SCIENCE CHAPTER 2 FLASHCARDS

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1 LIFE SCIENCE CHAPTER 2 FLASHCARDS Which of the following is NOT a characteristic that all organisms share? A. ability to taste and smell B. ability to grow and develop C. ability to use energy D. ability to sense and respond to change Which of the following reproduce through asexual reproduction? A. humans B. fish C. hydra D. birds Maintaining stable internal conditions is called A. shivering.. C. sweating. D. heredity. What happens when organisms reproduce? A. They grow and develop. B. They sense change in their environment. C. They maintain a stable internal environment. D. They make organisms similar to themselves. Which of the following is NOT a basic need of most organisms? A. food B. air C. plants D. water What do most of the chemical reactions involved in metabolism require? A. water B. phospholipids C. carbohydrates D. carbon dioxide What is a complex carbohydrate manufactured by plants? A. starch B. protein C. oil D. hemoglobin When a duck dives under water, its inner eyelids automatically raise to cover the duck s eyes. In this case, water acts as A. homeostasis. B. a reaction. C. a stimulus. D. an enzyme.

2 The molecule that provides energy for cellular processes is. B. DNA. C. RNA.. The subunits of proteins are A. sugar molecules. B. enzymes.. D. nucleotides. Which of the following are NOT used by cells for energy storage? A. fats s C. oils D. nucleic acids Which of the following is NOT true of proteins? A. They are a component of spider webs. B. They are obtained from food. C. They are the main source of energy for cells. D. They supply the building blocks needed to repair tissues. What are all living things made of? A. one cell B. several hundred cells C. one or more cells D. trillions of cells What are food, water, air, and a place to live? A. characteristics of living things B. examples of living things C. basic needs of most living things D. stimuli How much of the human body is water? A. about 10% B. about 70% C. about 50% D. about 99% What are hunger, sounds, and light? A. examples of stimuli B. necessities of life C. characteristics of life D. experiences all living things share What is DNA? A. a carbohydrate B. a lipid C. a protein D. a nucleic acid

3 What is one thing all living things do? A. They grow and develop. B. They shrink as they get older. C. They stay the same. D. They go through five stages. What is one characteristic that all living things share? A. Their cells have DNA. B. They can move. C. They can smell and taste. D. They have two or more cells. How do people warm up their bodies when they are cold? A. sweat C. move to a shady area B. shiver D. stay still What is the passing of traits from parent to offspring called? A. sexual reproduction B. heredity C. homeostasis D. DNA a change that affects the activity of the organism reproduction in which the sex cells from two parents unite, producing offspring that share traits from both parents reproduction that does not involve the union of sex cells and in which one parent produces offspring identical to itself the passing of traits from one generation to the next the total of all of the chemical activities that the organism performs

4 the smallest unit that can perform all life processes the maintenance of a stable internal environment an organism that makes its own food an organism that eats other organisms or organic matter an organism that breaks down the remains of dead organisms or animal waste to get energy the major energy carrying molecule in the cell a molecule made of sugars a molecule that is sometimes called the blueprint of life a large molecule made up of smaller molecules called amino acids

5 a molecule that forms ch of the cell membrane an energy storing compound that cannot mix with water table sugar organisms that eat plants organisms that feed on decaying organisms a potato organisms that make their own food a kind of reproduction in which an offspring shares characteristics of two parents A kind of reproduction in which an offspring is identical to its parent

6 compounds like fats and oils that store energy compound to which carbohydrates and lipids transfer their energy small molecules that make up proteins a molecule that contains all the information a cell needs to make protein the sum of all of an organism s chemical processes compounds that spider webs and hair are made from

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