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
Lelu [443]
3 years ago
11

Which of the following statements about the formation of polypeptides from amino acids is true?

Chemistry
1 answer:
Morgarella [4.7K]3 years ago
5 0

Answer:

The answer to your question is letter A.

Explanation:

a. A bond forms between the carboxyl functional group of one amino acid and the amino functional group of the other amino acid.  This is the correct answer because peptide bonding is very specific, only happens between the amino group of one amino acid and the carboxyl group of another.

b. A bond can form between any carbon and nitrogen atom in the two amino acids being joined.  The answer is incorrect because peptide bonding is very specific it can not happen between any carbon or any nitrogen.

c. Polypeptides form by condensation or hydrolysis reactions.  This answer is wrong because hydrolysis does not occur instead of that water is form as a product of this reaction.

d. The reaction occurs through the addition of a water molecule to the am , this answer is wrong, water is formed in this reaction, water is a product of the reaction not a reactant.

You might be interested in
Given 8.25 g of butanoic acid and excess ethanol, how many grams of ethyl butyrate would be synthesized, assuming a complete 100
mash [69]

Answer:

              10.87 g of Ethyl Butyrate

Solution:

The Balance Chemical Equation is as follow,

   H₃C-CH₂-CH₂-COOH + H₃C-CH₂-OH  →  H₃C-CH₂-CH₂-COO-CH₂-CH₃ + H₂O

According to equation,

    88.11 g (1 mol) Butanoic Acid produces  =  116.16 g (1 mol) Ethyl Butyrate

So,

           8.25 g Butanoic Acid will produce  =  X g of Ethyl Butyrate

Solving for X,

                      X =  (8.25 g × 116.16 g) ÷ 88.11 g

                      X =  10.87 g of Ethyl Butyrate

8 0
3 years ago
What makes the human thumb so special?
Sophie [7]

Answer:

The thumb alone is controlled by nine separate muscles; The hand has been used as a symbol of protection since ancient times; The human hand is different to the hands or paws of other animals, because it has fingers and a thumb that can work together. Each finger has 3 bones and the thumb has two bones

Explanation:

3 0
3 years ago
Read 2 more answers
An isotope has 15 protons, 16 neutrons, and 15 electrons. What is the isotopic notation of the isotope
VikaD [51]

Answer:

^{31}_{15}P is the isotopic notation of the atom

Explanation:

The isotope notation is:

^a_bX

<em>Where a is the mass number = Number of protons + Number of neutrons</em>

<em>b is atomic number = Number of protons</em>

The atomic number define the nature of the atom, the element with atomic number = 15 is phosphorus, P:

^a_bP

a = 15 protons + 16 neutrons = 31

b = 15

^{31}_{15}P is the isotopic notation of the atom.

3 0
3 years ago
How is the density of a substance calculated?
murzikaleks [220]
Example:

sample density of gasoline, 20 g of weigth into 5 <span>mL

Answer:

D = m / V

D = 20 g / 5 mL

D = 4 g/mL</span>
3 0
3 years ago
What is the luster of aluminum
Mamont248 [21]

Answer:

Luster of aluminum is Silver-White.

Explanation:

Aluminium is a Silver-White metal which is extracted from the Bauxite ore which can be reddish brown, white, tan, grey-white and tan-yellow in color and have the minerals like Gibbsite, Boehmite and Diaspore which are the minerals of the aluminium.

The Bauxite is the rock from which the Bauxite ore is extracted which have the minerals of the aluminum.

The luster of a metal is the color and shine of it and its shiny appearance.

Aluminium is a light weight metal but have a moderate hardness which makes a wider use of it. Aluminium is used in many places where the weight of the material is kept light but its hardness can be increased by mixing some other metals in it making hard alloy with lighter weight.

It is used in transportation vehicles, buildings, and many other places like Air crafts as the weight should be kept controlled to give a perfect lift to the Air craft.

3 0
3 years ago
Other questions:
  • H2(g) + Br2(l) ⇄ 2HBr(g) Kc = 4.8 × 108
    7·1 answer
  • What is the final concentration if 75.0 ml of a 3.50 m glucose solution is diluted to a volume of 400.0 ml?
    12·1 answer
  • Describe how magnetic forces and electric forces are similar and different from each other
    15·1 answer
  • If a sample of C-14 initially contains 1.5 mmol of C-14, how many millimoles will be left after 2255 years?
    11·1 answer
  • Why might it be important to test one variable at a time when doing an experiment?
    6·1 answer
  • 1. Marque a alternativa que melhor explica o que aconteceu com o átomo ao longo da história.
    15·2 answers
  • A student uses a lever and fulcrum to lift a rock off the ground.
    7·2 answers
  • How many subatomic particles are in the NUCLEUS of a neutral atom of Beryllium?
    15·2 answers
  • What causes a spectrum of colors to appear when light moves through a<br><br> prism?
    15·2 answers
  • POINTS 50 - 30!!! in my bio to find some of my unanswered questions
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!