Which of the following statements regarding contraction in skeletal and smooth muscle is TRUE? A. In skeletal muscle, calcium initiates contraction by binding to troponin, while in smooth muscle calcium initiates contraction by binding directly to myosin. B. In skeletal muscle, calcium initiates contraction by binding to troponin, while in smooth muscle calcium initiates contraction by binding to calmodulin. C. In skeletal muscle, calcium initiates contraction by binding to myosin light-chain kinase, while in smooth muscle calcium initiates contraction by binding directly to tropomyosin. D. All of the above are TRUE.
Answers: 1
Biology, 21.06.2019 20:00
You have been asked to lead a demonstration for the undergraduate microbiology lab course about the uses of negative staining when studying bacteria. a "negative" stain does not stain the bacterial cell itself but stains the space between cells. under magnification, the acidic (negativelycharged) nature of the stain will be repelled by the negatively charged bacterial cell wall and willleave the cell colorless in a stained background. negative stains are used primarily to reveal the presence of negatively charged bacterial capsules; therefore, they are also called capsule stains. encapsulated cells appear to have a halo surrounding them. the negative stain procedure does not require heat fixation, which limits any chances of alteration in bacterial cell shape and size. the bacterial suspension is added to a drop of stain, such as nigrosin or eosin, and drawn across the glass slide using a coverslip.nigrosin staining-not safranin staining-of klebsiella pneumoniae will allow for the visualization of the cell shape and the determination of the presence of a capsule.true/false
Answers: 1
Biology, 21.06.2019 22:30
~fourth largest plate ~includes parts of the indian and atlantic oceans ~subducts below the eurasian plate on the west side ~ the arabian and somali plates form boundaries with it what is the name of the tectonic plate described above? a) african plate b) eurasian plate c) north american plate d) indo- australian plate
Answers: 1
Which of the following statements regarding contraction in skeletal and smooth muscle is TRUE? A. In...
Biology, 26.10.2020 22:20
Spanish, 26.10.2020 22:20
Mathematics, 26.10.2020 22:20
Mathematics, 26.10.2020 22:20
Mathematics, 26.10.2020 22:20
Mathematics, 26.10.2020 22:20
Mathematics, 26.10.2020 22:20
Mathematics, 26.10.2020 22:20
Mathematics, 26.10.2020 22:20
Mathematics, 26.10.2020 22:20
Mathematics, 26.10.2020 22:20
Social Studies, 26.10.2020 22:20
Biology, 26.10.2020 22:20