CHECK FOR UNDERSTANDING.Name: Page 8 Listening to Bats Directions: Choose the correct word or words to complete the sentence. 1. Scientists listen to bats with (a radio, a computer, headphones Head-mounted speakers. Headphones have a strap that rests on top of the head, positioning a pair of speakers over both ears. For listening to music or monitoring live performances and audio tracks, both left and right channels are required. ). 2. Bats' cries are (soprano, ultrasonic, supersonic)--above the range of human hearing. 3. Bats use echolocation echolocation Physiological process for locating distant or invisible objects (such as prey) by emitting sound waves that are reflected back to the emitter by the objects. Echolocation is used by an animal to orient itself, avoid obstacles, find food, and interact socially. to (hunt, navigate, find a mate). 4. (Dolphins, Whales, Birds) also use echolocation. 5. Using the new Anabat detector, biologist Bruce Miller Bruce Miller is an American attorney born in 1945. He is known for arguing a legal case claiming welfare to be a constitutional right. Early life Miller was born in 1945 in California, where he spent his formative years. is able to identify bat species by their (size, coloration col·or·a·tion n. 1. Arrangement of colors. 2. The sum of the beliefs or principles of a person, group, or institution. , voice). Page 13 Your Body Manual: The Human Genome The human genome is the genome of Homo sapiens, which is composed of 24 distinct pairs of chromosomes (22 autosomal + X + Y) with a total of approximately 3 billion DNA base pairs containing an estimated 20,000–25,000 genes. Directions: Determine if each statement below is true or false (circle the correct letter). If a sentence is false, rewrite it to make the sentence true. T F 1. Genes are a set of chemical instructions that direct your cells' activity. T F 2. Genes only determine your physical appearance. T F 3. One gene directs each body function, such as cell division or growing new skin cells. T F 4. One complete unit of DNA DNA: see nucleic acid. DNA or deoxyribonucleic acid One of two types of nucleic acid (the other is RNA); a complex organic compound found in all living cells and many viruses. It is the chemical substance of genes. consists of one million bases, or nucleotides, that combine to make up genes. T F 5. Inside the nucleus of all human cells are 46 chromosomes, with half inherited from each parent. Page 16 All Dried Up Directions: Fill in the blanks. 1. A drought is a climate condition that results when rainfall is less than 2. One drought culprit is, a climate cycle that creates strong trade winds and pushes deep, cold Pacific Ocean waters towards North and South America. 3. Another cause of drought is, heating of Earth's climate due to increased greenhouse gases in the atmosphere. 4. The worst drought of the 20th century in North America was the" "drought. 5. A drought that can last a half-century or more is called a. |
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