Bio 1500 mizzou bush Study guides, Class notes & Summaries

EXAM 3: Mizzou Bio 1500 Exam 3 Bush; Questions and Answers Rated A+ Describe an effective experimental design to determine whether an environmental variable imposes selection on a trait. CORRECT ANS--need multiple generations -need a control group -need different levels of oxygen -need a small organism that reproduces quickly -need a confined environment

what are the 4 postulates of natural selection? - 1. individuals vary in their traits 2. some of the variation is heritable 3. more offspring are produced than survive to reproduce 4. survival & reproduction are predictable; those with favorable traits reproduce most and pass their genes to the next generation what happens when a proton is absorbed by a molecule? - -it excites an electron into a higher energy state -the electron quickly drops to its ground state -releases the energy as l...

Why are cells small? - As the cell increases in size, materials diffusing in the cell will not be able to reach the core as efficiently as in a small cell. The higher the SA:V ratio, the less efficient a cell is. The bigger cell will have slower cellular signaling response What is cellulose? - Polysaccharide consisting of glucose monomers. The main constituent of a plant cell wall and of vegetable fibers Describe an effective experimental design to determine whether an environmental variabl...

characteristics of the net movement of all molecules? - -is predictable -directed from high to low concentration -stops when it reaches equilibrium what is the First Law of Thermodynamics? - energy can neither be created nor destroyed, but can change from one form to another the passive movement of molecules - diffusion what type of thermal movements is diffusion driven by? - Brownian characteristics of individual molecules? - -random, unpredictable motion -not directed to low concentrat...

how does the fungi get food? - the hyphae secretes powerful exoenzymes into the environment that break down complex molecules into simple organic compounds characteristics of plants? - -Domain: Eukarya -Kingdom: Plantae -multicellular -autotrophic -cell walls contain cellulose domain of Fungi? - Eukarya what are some characteristics of Fungi? - -mostly multicellular -all heterotrophic -strong tissues -cell walls contain chitin what are the single celled Fungi called? - yeast a stron...

domain of Fungi? - Eukarya what are some characteristics of Fungi? - -mostly multicellular -all heterotrophic -strong tissues -cell walls contain chitin what are the single celled Fungi called? - yeast a strong, flexible polysaccharide inside the fungal cell walls - chitin branched filaments that compose the body of a fungus - hyphae a net-like mesh in which the hyphae are fused into - mycelium how do fungi get their food if they're heterotrophic? - -exoenzymes -mycelium i...

What isn't to be twisted around the body tube? - the eye piece the area that can be seen at one time through the scope - field of view the distance between the closest point in focus and farthest point in focus - depth of field the minimum distance between two objects that they can still be distinguished as separate objects - resolution lowest power lens; 4x - Scanning Lens 10x - Low Power Lens 40x - High Power Lens highest power lens named after an oil that is placed betwe...

©THEBRIGHT EXAM STUDY SOLUTIONS 8/27/2024 12:01 PM Mizzou Bio 1500 Exam 3 Bush Questions With Correct Answers Describe an effective experimental design to determine whether an environmental variable imposes selection on a trait. - answer-need multiple generations -need a control group -need different levels of oxygen -need a small organism that reproduces quickly -need a confined environment How does natural selection cause dramatic changes in phenotypes? - answerDifferent levels of o...