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Created by Terri Street Copyright, 2000 1,000,000 500,000 250,000 125,000 64,000 32,000 16,000 8,000 4,000 2,000 1,000 500 300 200 100 Click to return to question, Cont-P to switch to the pen, cross out two incorrect answers, then Cont-A to switch back to pointer. Click to return to the question and poll the class Click on link to Ask Jeeves, or click on this oval to return to question and ask a friend 14. The diffusion of water across a selectively permeable membrane is called A. Osmosis C. Osmotic Pressure B. Active Transport D. Facilliated Diffusion A. 100 is Osmosis Back to Board What is the smallest structural and functional unit of the nervous system? A. Receptor B. Organ C. Neuron D. Tissue C. 200 Neuron Back to Board Symbiosis in which both species benefit is called ________ A. Commensalism C. Predation B. Mutualism D. Parasitism B. 300 Mutualism Back to Board During transcription, an RNA molecule is formed _________. A. Nucleus C. That is double stranded B. That is complementary To both strands of the DNA D. that is not complementar to either A. 500 is inside the nucleus Back to Board A factor that is necessary for the formation of new species is____ A. Geographic Barriers B. Mating Behaviors Are different C. Temporal isolation D. Reproductive Isolation D. 1,000 Reproductive Isolation Back to Board In the walls of the heart, there are two thin layers that form a sandwich- a thick layer of muscle called the _______________ A. Eplitheal Tissue C. Myocardium B. Pericardium D. Connective Tissue Layer C. 2,000 Myocardium Back to Board Proteins are made of Subunits called ________ A. Lipids B. Amino Acids C. Vitamins D. Water B. 4,000 Amino Acids Back to Board Water is lost from the body by each of the following except? A. Sweating B. Urination C. Digestion D. Respiration C. 8,000 Digestion Back to Board Which of the following is not evidence of evolution A. Fossil Record B. Homologous Body Structures C. Similarites in Embryology D. Genetic Variation Within a population. D. 16,000 Genetic variation Within a population Back to Board In a drop of pond water under a light microscope, you observe a unicellular organism completely covered in cilia. This organism is a _________ A. Sporangia B. Bacteria C. Eukaryote D. Virus B. 32,000 A Bacteria Back to Board In An Ecosystem, energy flows from ___________________. A. The Sun to Autotrophs to Consumers C. Consumers to Producers B. Bacteria to Animals D. Carnivores to Consumers A. 64,000 In A food Web- the Energy flows from the Sun to Autotrophs to the Consumers that eat the Autotrophs Back to Board How does the endocrine System maintain homeostasis in the human body? A. Helps Protect the Body from diesease. B.Produces hormones that Keep the different organs in Balance. C. Coordinates the body’s Response to the Environment D. Eliminates Wastes. B. 125,000 The endocrine system’s main purpose is to produce hormones to control organ balance. Back to Board During cellular Respiration, _____________ A. Glucose is Produced From the Sun’s Energy. C. Glucose is Broken down For energy in the presence of oxygen B. Water is Made D. Oxygen is exchanged With CO2 C. 250,000 In Cell Respiration glucose is broken down to make ATP In the presence of oxygen. Back to Board If the cross between two dominant black guinea pigs produces three black guinea pigs and one white guinea pig. Then the cross is between two __________. A. Homozygotes C. The genes for coat color are Linked to different chromosomes in the guinea pigs B.Homologous Body Structures D. The parents were heterozygous for coat color. D. 500,000 You always get a 3:1 ratio when you cross two Heterozygote parents Back to Board Explain what Atherosclerosis is? A. Leakage in the Arteries C. A new type of surgery B. Blood Vessel Hardening D. Scloriosis of the Heart. B. 1,000,000 atherosclerosis Blockage by hardening of the arteries, .Blockage of these main arteries leads to heart attacks Sorry, try again! Thanks for playing!