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BIO 100 LECTURE EXAM 1 ALREADY
GRADED A+.
Science - correct answer A tentative study that uses evidence to answer questions about the natural world. Science - correct answer Not conducted in a trial and error manner, purposeful Science - correct answer Utilizes an inquiry approach Science - correct answer Examines the natural world, what can be verifiably observed/measured; has limits Independent Variable - correct answer The values you are manipulating. It is what you predict will effect the dependent variable. Dependent Variable - correct answer What you measure in the experiment and what is affected during the experiment. It responds to the independent variable. Control Variable - correct answer What is kept the same between groups. Sample Size - correct answer The number of observations in your expirament If-then statements - correct answer As__________increases____________decreases. Characteristics of Life - correct answer Cellular Organization; Cells are the basic unit of life, composed of one or more cells. Characteristics of Life - correct answer Getting and Using Energy; all living things acquire energy and transfer it from one to another
Characteristics of Life - correct answer Internal Regulation; Homeostasis; Maintains a stable internal conditions, how animals maintain homeostasis may be different Characteristics of Life - correct answer Reproduction; Living things make offspring, pass genetic information asexually or sexually using DNA Characteristics of Life - correct answer Life Evolves; descended from common ancestor, related to eachother Characteristics of Life - correct answer Growth/Development Characteristics of Life - correct answer Respond to the environment Non-Living - correct answer No metabolism Non-Living - correct answer No homeostasis Non-Living - correct answer Not composed of cells Non-Living - correct answer Can't reproduce on its own Prokaryotes - correct answer No nucleus, Genetic Info not in nucleus, lacks membrane bound organelles, majority have cell walls, mor than 2 billion years old. Eukaryotes - correct answer Plants, Fungi, Protists, Contains membrance bound organelles, majority have cell walls- not just animals, evolved from prokaryotic cells 2 billion years ago, Opposite of prokaryotes Cilia - correct answer moves by hair, numerous short projections Flagella - correct answer tail or whip like
Fungi - correct answer no chlorophyll, most are multicellular, heterotrophs external digestion, yes nucleus, yes cell wall -chitin, nonmotile Formerly Protista - correct answer yes nucleus, cell wall present in some types, photo/hetero/both, cilia/flagella/ameboid/contracile fibrils, unicelluar-multi-or colonial Animalia - correct answer multicellular, heterotrophs -ingestion, yes nucleus, no cell wall, cilia/flagella/contractile fibrils Plantae - correct answer yes nucleus, yes cell wall - cellulose, autotroph- photosynthesis, most nonmotile, most multicellular Which of the following is a true statement about cell types? - correct answer The majority of prokaryotes and eukaryotes have cell walls bacteria - correct answer A single celled organism does not have a nucleus. The organism has chlorophyll and meets its energy requirements by utilizing sunlight to produce the molecules it require. Which domain does it belong to? Why are cells called the basic unit of life? - correct answer All known organisms have one or more cells, some cells are separate living entities that can survive individually, cells are the smallest unity that can function independently. Eukaraya - correct answer While examining samples from a local pond, you observe an organism that has cells which contain a nucleus and other membrane- bound cell organelles. Which domain does it belong to? Protists - correct answer Which kingdom is best described as having organisms that can be either heterotrophic or autotrophic? What is a characteristic that can be used to distinguish types of plants? - correct answer The presence of tissues, the presence of seeds, and the use of photosynthesis.
Parts of the Scientific Method: - correct answer Observation, question, hypothesis, experiment, data analysis, conclusions Observation - correct answer gather info through senses. ex. her hair is brown Question - correct answer Must be understandable, doable, testable, and falsifiable. ex. How does _________ affect __________ in ___________? Hypothesis: - correct answer Educated guess, explanation, or observations, testable, and specific. Subject explanation - correct answer subject does what he/she thinks the researcher wants observer bias - correct answer errors measuring and interpreting results because of what he/she wants to happen Scientific Theory - correct answer well-substantiated explanation of some aspect of the natural world, based on a body of facts that have been repeatedly confirmed through observation and experiment double-blind experiment - correct answer the identity of those receiving a test treatment is concealed from both administrators and subjects until after the study is completed. random assignment - correct answer using randomization, such as by a chance procedure (e.g., flipping a coin) or a random number generator. placebo - correct answer a group in an experiment that gets the "fake" treatment generalization: - correct answer drawing broad inferences from particular observations
Lymphatic system - correct answer recovers excess tissue fluid and aids in community red bone marrow - correct answer makes WBC blood - correct answer contains white blood cells that fight infection (WBC=Leukocytes) pathogen - correct answer any agent that causes a disease immune system - correct answer system of organs, tissues, and cells that enables body to recognize its own cells and to defend against infections, cancer, and foreign substances Transmission of infectious agents - correct answer exposure to body fluids, intermediate host, inhalation, and ingesiton Lines of defense: - correct answer external innate defenses (barriers), internal innate defenses, adaptive immunity how fever defends the body - correct answer kills some pathogens and reduces iron level in blood needed by pathogens lymphocyte - correct answer a WBC that helps attack specific pathogens, produced during development, have different antigen receptors Classification - correct answer grouping into categories, In science, the practice of classifying organisms is called taxonomy Classification Categories - correct answer Domain, Kingdom, Phylum, Class, Order, Family, Genus, and Species. Remember - Dear Kelly please come over for group study!
nuclear envelope - correct answer membrane which surrounds the genetic material and nucleolus in eukaryotic cells. The nuclear membrane consists of two lipid bilayers—the inner nuclear membrane, and the outer nuclear membrane. cell wall - correct answer outside the plasma membrane of the cells of plants, fungi, and bacteria cell membrane - correct answer the semipermeable membrane surrounding the cytoplasm of a cell external digestion - correct answer which food is digested from the outside through secreting enzymes that degrade food material and then absorbed through diffusion. ingestion - correct answer the process of taking food, drink, or another substance into the body by swallowing or absorbing it. contractile fibris - correct answer various threadlike fibers or filaments that are constituent parts of a cell or larger structure. Components of internal innate immune system - correct answer white blood cells, proteins, fever, inflammatory response Antigen - correct answer molecule foreign to host, cause the immune system to react. It recognizes invader, clone responders, respond to invaders, and remembers invaders. antibiotic - correct answer Antimicrobial agent made from microorganisms, and can kill and inhibit the growth of microorganisms, especially those that are infectious or disease-causing antiviral - correct answer An agent that kills a virus or that suppresses its ability to replicate and, hence, inhibits its capability to multiply and reproduce.
