Bio 112 exam - Study guides, Class notes & Summaries

Bio 112 Exam 1 Questions and Answers Already Passed What is the role of transcription factors in gene regulation? Transcription factors are proteins that bind to specific DNA sequences to promote or inhibit the transcription of genes. How do lipids contribute to the structure of cell membranes? Lipids, particularly phospholipids, form a bilayer in cell membranes that provides barriers for cell compartmentalization and regulates permeability. What is the significance of the pH sca...

Duquesne Bio 112 Exam 2 Latest Update Graded A+ Conjugation DNA from a donor cell is transferred to an adjacent recipient cell Transformation DNA released into the environment by dead cells is taken up by a recipient cell Transduction DNA is transferred from a donor to a recipient cell by a virus Three domains Eukarya Archaea Bacteria Eukarya and Archaea are more closely related Archaeon Enviornments Many archaea are extrelmeophiles carbon fixation and respiration Bacter...

Bio 112 Exam Martin Ball State Questions and Answers Already Passed mollusca body plan shared features -foot: mass of muscle tissue used for movement and/or manipulation -visceral mass: clump that contains most of the organs -mantle: tissue that drapes over the organ clump and secretes the shell in shelled members 4 characteristics shared by all animals -eukaryotic- membrane bound nucleus and organelles -multicellular -heterotrophic- consumes food to get energy -have tissues...

Bio 112 Exam 3 Janes TAMU Latest Update Graded A+ Bryophytes Characteristics Vascular: no Seed Bearing: no Dominant Generation: gametophyte Examples/Phyla: liverwort, mosses, hornwort Special features: use spores, no seeds, need water for reproduction Paleozoic or Mesozoic: Paleozoic Ferns Characteristics Vascular: yes Seed Bearing: no Dominant Generation: sporophyte Examples/Phyla: monilophyta Special features: have sporangium Paleozoic or Mesozoic: Paleozoic Gymnosperms C...

mollusca body plan shared features -foot: mass of muscle tissue used for movement and/or manipulation -visceral mass: clump that contains most of the organs -mantle: tissue that drapes over the organ clump and secretes the shell in shelled members 4 characteristics shared by all animals -eukaryotic- membrane bound nucleus and organelles -multicellular -heterotrophic- consumes food to get energy -have tissues that develop from embryonic layers (germ layers) germ layer formation step 1 spe...

Bryophytes Characteristics Vascular: no Seed Bearing: no Dominant Generation: gametophyte Examples/Phyla: liverwort, mosses, hornwort Special features: use spores, no seeds, need water for reproduction Paleozoic or Mesozoic: Paleozoic Ferns Characteristics Vascular: yes Seed Bearing: no Dominant Generation: sporophyte Examples/Phyla: monilophyta Special features: have sporangium Paleozoic or Mesozoic: Paleozoic Gymnosperms Characteristics Vascular: yes Seed Bearing: yes Dominant...

Natural selection: Basic requirement for natural selection to occur in a population: organisms in the same population must differ from one another in their heritable traits. Examples of natural selection and evolution at work include which of the following? -The case of the bacteria Staphylococcus aureus resistance to first penicillin, then methicillin, and now vancomycin. -Housefly resistance to DDT within a decade of its introduction. -Weed resistance to herbicides. -The progression of ...

Osmosis is the movement of Answer water through a selectively permeable membrane down its concentration gradient The ability of an organism to sense and react to changes in its body illustrates Answer responsiveness In negative feedback mechanisms, changes away from the normal state Answer stimulate changes in the opposite direction to restore normal levels Which of the following are living organisms simplest unit? Answer cells An organic compound always contains Answer carbon and hy...

An ecosystem would include all of the following except -nonliving air, water, soil, and other components in an area. -a community that may include primary producers, consumers, and decomposers. -populations of organisms in the same species. -the biosphere, with its resources and functioning systems. -None of the answer choices are correct. - the biosphere, with its resources and functioning systems. At the ecosystem level, the organisms and their environmental conditions are all considere...

Which of the following are examples of biotic factors that could impact a living organism (for the organism in parenthesis)? Choose all that apply. At least one is correct. A. When a plant in the forest is outcompeted by a more shade-tolerant species. (for the shade-sensitive plant) Correct Answer When a human provides a home to 10^11 bacteria in their gut (for the bacteria) B. When a human provides a home to 10^11 bacteria in their gut (for the bacteria) C.When a plant's growth is l...