Chapter 2 Terms Matter - anything that takes up space and has mass. Element - substance that cannot be broken down to other substances by chemical reactions. Compound - substance consisting of two or more different elements combined in a fixed ratio. Essential Element - the 20-25% of the 92 natural elements an organism needs to live a health life and reproduce. Trace Elements - required by an organism only minute quantities. Atom - the smallest unit of matter that still retains the properties
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Work and Energy. 1. What is the work done by a force of 20 N acting through a parallel distance of 8.0 m? What force will do the same work through a distance of 4.0 m? [160 J‚ 40 N] 2. A push of 120 N is applied along the handle of a lawn mower producing a horizontal displacement of 14.0 m. If the handle makes an angle of 30.0o with the ground‚ what work was done by the 120 N force? [1.45×103 J] 3. A rope making an angle of 35.0o drags a 10.0 kg toolbox a horizontal distance of 20
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Chapter 11: Cell Communication Concept 11.1 External signals are converted to responses within the cell. I. Evolution of Cell Signaling 1. signal transduction pathway. a specific cellular response in a series of steps 2. signaling mechanisms first evolved in ancient prokaryotes and unicellular eukaryotes‚ then adopted for new uses 3. quorum sensing. allows bacterial populations to coordinate behaviors to carry out activities only productive when performed by a given number of cells
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Chapter 4 Microscopes Two important factors in microscopy are: 1) Magnification: an increase in the object’s apparent size compared with its actual size. 2) Resolving Power: the ability of an optical instrument to show two objects are separate. Three types of microscopes: 1) Light Microscope (LM) M: 1000x RP 0‚2 micrometer (small bacterial cell) 2) Electron Microscope (EM) uses a beam of electrons to resolve electrons‚ better resolving powers than light microscope M:100‚000x RP 0
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THE BIOLOGY OF MIND Chapter 2 SQ3R (Survey‚ Questions‚ Read‚ Retrieve‚ Review) QUESTIONS: BIOLOGY‚ BEHAVIOR‚ AND MIND 2-1: Why are psychologists concerned with human biology? By studying the links the behavior and biology‚ psychologist work from a biological perspective. This perspective shows the psychologist which areas of systems interact to influence behavior. Humans are biopsychosocial systems‚ in which biological‚ psychological‚ and social-cultural factors interact to influence our
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Chapter 2 Biology and Psychology MULTIPLE CHOICE 1. Which of the following would not be possible without the functioning of the nervous system? a. ideals‚ thoughts‚ and plans c. behaviors‚ emotions‚ and cognitions b. imagery and cognitions d. all of these ANS: D DIF: 2 REF: 2-26 OBJ: 1 MSC: TYPE: Conceptual 2. A(n) _________ is a nerve cell. a. axon c. dendrite b. neuron d. glial cell ANS: B DIF: 1 REF: 2-26 OBJ: 1 MSC: TYPE: Factual NOT: BTC 3. ________
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Multiple-Choice Questions Chapter 2: Marine Ecology 1. Which environment has historically been the most stable? w. desert x. coral reef y. tundra z. tropical rain forest 2. Most sea life is found in which area? w. On or above continental shelves x. In trenches y. Along mid-ocean ridges z. Near deep-sea hydrothermal vents 3. Coastal upwelling results in ________. w. carbon dioxide-rich water surfacing x. warm water surfacing y. mixing of salt and freshwater z. lower high tides 4. The yellow-green
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Biology‚ 7e (Campbell) Chapter 24: The Origin of Species Chapter Questions 1) Which of the following applies to both anagenesis and cladogenesis? A) branching B) increased diversity C) speciation D) more species E) adaptive radiation Answer: C Topic: Concept 24.1 Skill: Comprehension 2) Which of the following statements about species‚ as defined by the biological species concept‚ is (are) correct? I. Biological species are defined by reproductive isolation. II. Biological
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Campbell’s Biology‚ 9e (Reece et al.) Chapter 31 Fungi Though fungal divisions have traditionally been based on modes of sexual reproduction‚ molecular considerations are becoming more important. Consequently‚ no emphasis has been placed on the vagaries of sexual and asexual reproduction among various fungi in this Test Bank. Instead‚ new questions assess students’ abilities to think logically about fungal morphology‚ genetics‚ and ecology. Two new sets of scenario questions deal with the biology
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• Organic chemistry- special study of chemistry dealing with molecules containing carbon and hydrogen • Hydrocarbon- an organic molecule consisting only of carbon and hydrogen. • Functional groups- a specific configuration of atoms commonly attached to the carbon skeletons of organic molecules and involved in chemical reactions. • Hydroxyl group: a chemical group consisting of an oxygen atom joined to a hydrogen atom. Molecules possessing this group are soluble in water and are called alcohols
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