Biol 212 Study guides, Class notes & Summaries

Which ion most readily leaks across a neuron's membrane, helping to establish the resting potential? K+ In resting neurons, the membrane is selectively permeable to K+ through a K+ channel protein. As K+ leaves the cell along its concentration gradient, the inside of the membrane becomes negatively charged relative to the outside. Will K+ continue to leave the cell indefinitely? No−−as the interior of the cell becomes more negative, the electrical gradient counteracts the movemen...

What was the purpose of this microscope laboratory experiment? - Answer to name the parts of a compound light microscope and their functions, learn the correct way to use the c.l.m what is the difference between magnification and resolution? - Answer magnification: uses special lenses to enlarge image of an object. resolution: separates or distinguishes structures to close together what is the purpose of placing immersion oil on the slide? - Answer prevents scattering of light ...

What is a protist in the most general sense? Eukaryotic (nucleus enclosed) cells have nuclei and other membrane- enclosed organelles such as mitochondria and plastids. primarily aquatic eukaryotic organisms with diverse What are the different body plans, modes of nutrition, habitats and reproductive lifestyles? of protists most body plans are unicellular, some form colonies, some are coenocytic and some are multicellular algae are autotrophic photosynthesizers heterotrophs absorb nutr...

BIOL 212 Exam Questions And Answers (Verified And Updated) Which ion most readily leaks across a neuron's membrane, helping to establish the resting potential? - answerK+ In resting neurons, the membrane is selectively permeable to K+ through a K+ channel protein. As K+ leaves the cell along its concentration gradient, the inside of the membrane becomes negatively charged relative to the outside. Will K+ continue to leave the cell indefinitely? - answerNo−−as the interior of the cell...

BIOL 2120 Chapter 17 Pre-Test Exam Questions With Correct Answers. Which of the following features is a significant difference in the function of DNA polymerases versus RNA polymerases? See Section 17.1 - CORRECT ANSWER RNA polymerase does not require a primer to add new nucleotides. What is the function of the sigma subunit of RNA polymerase in bacterial transcription? See Section 17.1 - CORRECT ANSWER Sigma is the portion of the enzyme that recognizes specific sequences in the promoter...

BIOL 212 - Quiz 6 Short Questions with 100% correct answers | verified | latest update 2024

adductor magnus triceps brachii long head Trapezius Elevates, depresses, retracts, and rotates the scapula levator scapulae elevates scapula serratus anterior protracts and rotates scapula pectoralis minor protracts and rotates scapula Supraspinatus abducts arm at shoulder joint

Homeostasis refers to maintaining a relatively stable internal environment. The "internal environment" is: a) the blood cells b) body parts beneath the skin c) the cytoplasm of all the cells in the body d) plasma, interstitial fluid, and transcellular fluid e) intracellular fluid - correct answer plasma, interstitial fluid, and transcellular fluid Which of the following is an example of positive feedback? a) Consuming caffeine increases urine output, causing dehydration b) The ...

Biol 212 Exam Questions With 100% Correct Answers What is a protist in the most general sense? - answerEukaryotic (nucleus enclosed) cells have nuclei and other membrane- enclosed organelles such as mitochondria and plastids. primarily aquatic eukaryotic organisms with diverse What are the different body plans, modes of nutrition, habitats and reproductive lifestyles? of protists - answermost body plans are unicellular, some form colonies, some are coenocytic and some are multicellular a...

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