subject
Chemistry, 02.09.2020 21:01 nickname0097

Experiments performed with biological systems require a buffer that will not interfere with the stability and activities of the biological components. In 1966, Norman Good and his colleagues began a series of investigations that established criteria for new zwitterionic buffers that would be optimal for experimentation with biological systems. These criteria include:a. pKa between 6 and 8b. highly water solublec. minimally permeable to biological membranesd. minimal effects of salt concentratione. minimla effect of temperature on pKaf. minimal effect of concentration on pKag. minimal interaction with metal ionsh. nontoxici. high chemical stabilityj. minimal absorbance between 240-700 nmFor each buffer below, choose the property tha does NOT meet Good's criteria for biochemical buffers. If all of the buffer's properties satisfy the criteria for a Good's buffer, then select the last choiceProperties of phosphate buffer: a) pK2 at 25°C 7.200 b) ApKaleC 0.0028 c) does not cross lipid bilayers d) precipitate forms with Ca Ons e) all of the above properties fulfill the Good's buffer criteria a) Na Na Na Properties of HEPES buffer Scroll down to see all answer b) pKa at 25°C 7.48 choices O ApKoloC 0.014 c) water solubility limit is 2.25 M d) low absorbance of light in UV region e) all of the above properties fulfill the Good's buffer criteria

ansver
Answers: 2

Another question on Chemistry

question
Chemistry, 21.06.2019 14:10
Amonoprotic acid is an acid that donates a single proton to the solution. suppose you have 0.140 g of a monoprotic acid dissolved in 35.0 ml of water. this solution is then neutralized with 14.5 ml of 0.110 m naoh. what is the molar mass of the acid?
Answers: 1
question
Chemistry, 22.06.2019 05:50
Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.
Answers: 2
question
Chemistry, 22.06.2019 07:30
Which of the following best supports the concept that genetic information is passed on to offspring from both of their parents, not just one?
Answers: 2
question
Chemistry, 22.06.2019 14:30
100 grams of molten lead (600°c) is used to make musket balls. if the lead shot is allowed to cool to room temperature (21°c), what is the change in entropy (in j/k) of the lead? (for the specific heat of molten and solid lead use 1.29 j/g⋅°c; the latent heat of fusion and the melting point of lead are 2.45 × 104 j/kg and 327°c, respectively.)
Answers: 1
You know the right answer?
Experiments performed with biological systems require a buffer that will not interfere with the stab...
Questions
Questions on the website: 13722367