Question
Study guide help! 36 and 37 require two answers
hypos twarer hoes Numbers 27 through 30 are multple choloe for each pleaze mark the one best answer. which of the folowing s acorrect statement conceming the process of osmoas associated with a selectivedy permesbie membrane A Water cannot dfm.ce from a hypertonic solution to a hypotonic solution. B Cels placed in Isotonic solutions heve no water ciffusing through their cel membrane therefore the cell looks the same as before, no change in appearance. tvpicaly swesl to the point of yis E Anima oels that are placed ina D, Water wil primerty fnow (dmuse) through a membrane from a hypotonkc sokution into a E The greter te carcetraton difterenses between two solutors the sower the rate of hypertonic sdluton. osmoels that wil ccour between those two soltions 28-Which of the fallowingismote true chaacteraation of enzmes or enayme function A Enzymes are composed primarily of probeins but may aiso have cofactors attached. B Erzymes lower the Erryees can be tered in unction rdior form by high temperature or etreres of pH D. Enzymes are never changed in shape during ther activttes as they catalye chemical activation energy required by a chemical reaction, Enzymes can be used over and over because they are not atered as a result of the invdlvement in a chemicel reaction not cocrect 29. which f the tollow ckcon cerning elements of the cytoskeleton and motor 29. Which of the followig motor proteins are assocated with microtubules and have the capacity to move A Dynen 8, Vescles thet are moved between the ER and Golgi are "carred or puked" alang C. The processes of cydosis (cytoplasmic streeming) and contractile vacuale function are D. The key events assodated with seelctal muscle contraction are interactions between E. Microfiaments are associated with the intemel support and structure of the cell processes vesicles toward the negative end of the microbubue. microtubules by mobor protelrs both associated with the interactions of mycein motor proteins with microfilaments actin internediste filameres and idnesin protens called microvilil and pseudopods. not Correct concernin 30,-which of the foliowirg is not conect concerning the fomaion of proten costed vesides A. The coating protesins attach to membrane receptors and are responsible for the formatior B. Proten coated vesicles are assodiated with both the antercgrade and retrograde C. clathrin prctens may be associabed ether with receptor medieted endocytosis or the O·Cotrg proters must be able to ten t recector proteins iteral Golg do ars (goi of the vesicle movement of vesides between components of the endomembranous system. formation of lyscsomal vesces lumen) but only after a mannose 6 phcsphate protein is attach to the cytoplasmic domain of the receptor protein. E. Protein coated vesides may attach to motor proteins ike kinesins or dynens, and are maved by these motor proteins to their target membrares for fusian.
Explanation / Answer
36. A. Clearly this is a description of a protein that is triggered to change shape by a change in the ion concentrations in the extracellular environment and allow the facilitated diffusion of Na+.
D. This seems to best fit a transmembrane protein classified as a gated channel and in addition it should be called a symport protein.
37. B. This cell is able to concentrate the glucose in this way due to the facilitated diffusion of protons through an H+/Glucose cotransporter protein.
D. The protein involved in the movement of the hydrogen ions to the cell exterior is function as an antiport active transport channel protein.