1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Kitty [74]
2 years ago
6

One method for separating polypeptides makes use of their different solubilities. The solubility of large polypeptides in water

depends upon the relative polarity of their R groups, particularly on the number of ionized groups: the more ionized groups there are, the more soluble the polypeptide.
1. Which of each pair of the polypeptides that follow is more soluble at the indicated pH?
(a) (Gly)20 or (Lys-Ala)3 at pH 7.0:
O (Gly)20
O (Lys-Ala)3
(b) (Glu)20 or (Phe-Met)3 at pH 7.0
O (Glu)20
O (Phe-Met)3
Biology
1 answer:
bezimeni [28]2 years ago
3 0

Answer:

(a) (Glu)zo or(Phe-Met)3 at pH 7.0

O (Glu)zo ✔

O (Phe-Met)s ❌

(b) (Gly) zo or (Lys-Ala)3 at pH 7.0:

O (Gly12) ❌

O (Lys-Ala)✔

(c) (Ala-Asp-Gly)s or (Asn-Ser-His)s at pH 3.0:

O (Asn-Ser-His)s ✔

O (Ala-Asp-Gly)s ❌

(d) (Ala-Ser-Gly)s or (Asn-Ser-His)s at pH 6.0:

O(Ala-Ser-Gly)s ❌

O (Asn-Ser-Hish)s ✔

Explanation:

Polypeptides that has polar or charged side chains are more soluble than polypeptides with nonpolar side chains.

(a) At ph 7.0

(Glu)20 is negatively charged at pH 7 and more soluble

(Phe-Met)3 is observed to be less polar and less soluble

(b)At ph 7.0

(Lys-Ala)3 is positively charged (polar) and more soluble

(Gly)20 is uncharged as only the amino- and carboxyl-terminal groups are charged as its less polar and less soluble too.

(c) At pH 6.0

(Asn-Ser-His)5 has polar Asn side chains and partially protonated His side chains and it's more soluble unlike the (Ala-Asp-Gly)s at that pH.

(d) At pH 3.0

(Asn-Ser-His)s as partially protonated carboxylate groups of Asp residues and it is also neutral but the imidazole groups of His residues are fully protonated and positively charged. Hence it's more soluble than the (Ala-Ser-Gly)s at that particular pH.

You might be interested in
Sulfur emissions from industry combine with water in the atmosphere and form acid rain. A new factory is built very close to the
Setler79 [48]

Sulfur emissions from industry combine with water in the atmosphere and form acid rain. A new factory is built very close to the lake that Josh visits often. By examining the table that shows what pH range different species can survive, Josh decides that the aquatic life will be affected by the changes in pH that the lake. Josh correctly decides that organisms that will be the most affected are

A) perch and frogs.

B) mayfly and bass.

C) snails and clams.

D) frogs and salamanders.

The correct answer is option (C) snails and clams.

Acid rain is formed when oxides of sulfur and nitrogen combine with water molecules. Industries are one of the major contributors to acid rain. pH is a measure of acidity or alkalinity in water.

A factory built close to the lake can cause acid rain which affects the pH of the lake. Any change in the pH of the lake has an effect on the organisms in it. A pH of 7 is considered to be neutral and pH values below 7 indicates acidity and pH values above 7 indicates alkalinity. Organisms have an acid tolerance level beyond which they are affected and can die. Perch has an acid tolerance of up to pH 4.5 and frogs can tolerate an acidic pH of 4.0. The acid tolerance level of Mayfly and Bass is a pH of 5.5. Salamanders can tolerate an acidic pH of 5. Whereas, Snails and Clams have a very less pH tolerance of 6. They are highly susceptible to acidic pH.

Thus, Josh correctly decides that organisms that will be the most affected are snails and clams.



6 0
3 years ago
Read 2 more answers
Ensuring that enough money and credit are available to sustain economic growth without inflation is the primary mission of the _
Black_prince [1.1K]
<span>Ensuring that enough money and credit are available to sustain economic growth without inflation is the primary mission of the D. Federal Reserve. </span>
6 0
3 years ago
1. Which of the following refers to the process of an environment constantly changing?"
Bumek [7]

Answer:

I believe it's ecological succession.

Hope that helps!

8 0
2 years ago
Read 2 more answers
What are brodmann areas and how do they relate to the neurological deficits that occur as the result of stroke?.
Viefleur [7K]

The Brodmann areas are a method of mapping the cortex and its distinct functions that was developed by Korbinian Brodmann, after whom the areas are named.

Korbinian Brodmann (November 17, 1868 – August 22, 1918) was a German neurologist best known for classifying the cerebral cortex into 52 distinct regions based on cytoarchitectonic (histological) characteristics. These areas are now commonly known as Brodmann areas.

The Brodmann classification divides the cortex into approximately 52 sequentially numbered areas, though some regions have since been subdivided and others are only found in non-human primates.

It is in charge of motor movements such as contralateral finger/hand/wrist or orofacial movements, learned motor sequences, breathing control, and voluntary blinking. The primary visual cortex (Brodmann area 17) is located on the medial surface of the occipital lobe, in and on either side of the calcarine sulcus.

To learn more about Brodmann areas, here

brainly.com/question/15837481

#SPJ4

3 0
9 months ago
Computers would also help kids apply for schools and jobs.
Alja [10]

Answer:

students who want to go to Brentview Arts must fill out an online application

Explanation:

if the only way to get into Brentview Arts is by doing an application online, then computers would help those students. They can't send it through the mail so the computer would be their only resource

8 0
3 years ago
Other questions:
  • CAN SOMEONE PLEASE HELP ME ILL MARK AS BRAINLIEST
    14·2 answers
  • Which type of fibers are found in the hypoglossal nerve (cn xii)?
    14·1 answer
  • Doing personal interviews with holiday shoppers at an indoor mall is an example of _______ research.
    11·2 answers
  • A serious genetic disorder known as hemochromatosis is often called the rusty organ disease and affects nearly 1.5 million ameri
    15·2 answers
  • The chromosome is the sex determiner for many species. t/f
    14·1 answer
  • 30 POINTS!!!!!!!
    9·1 answer
  • What is the most likely position for the hurricane indicated by the wind readings from the three weather stations shown?
    9·2 answers
  • Cool air sinks creating an area of ______ pressure.
    11·2 answers
  • Describe what happens when cells divide uncontrollably?
    13·1 answer
  • 70 points for whoever does this correctly! i would really appreciate it!
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!