All categories

9 days ago

Carbohydrates and proteins are built up from their basic building blocks by the ________.

Chemistry

2 answers:

lions [2.6K]9 days ago

6 0

Response: A. The removal of a water molecule between each pair of units

Explanation: Carbohydrates are polymers formed by linking monomer units of monosaccharides.

Amino acids serve as the building blocks of proteins, meaning they are the smallest units that combine to form protein polymers.

Thus, when two monosaccharide monomers are linked, a condensation reaction occurs, eliminating a molecule of water. This same process applies to protein formation.

Therefore, option (A) is the correct choice.

eduard [2.5K]9 days ago

5 0

A. The removal of a water molecule between each pair of units

You might be interested in

An atom has four electrons in its valence shell. What types of covalent bonds is it capable of forming?

Tems11 [2390]

An atom that contains four electrons in its valence shell is capable of forming multiple types of bonds: single bonds, as an atom fitting this description can create four single bonds or a mix of single, double, and triple bonds. Take for instance alkanes, where this atom could form one double bond along with two single bonds, or conversely, two double bonds, which is seen in alkenes. For triple bonds, this atom could make one triple bond and a single bond, as seen in alkynes.

6 0

8 days ago

What are the respective central-metal oxidation state, coordination number, and overall charge on the complex ion in Na2[Cr(NH3)

lions [2649]

Answer:

Central metal oxidation state: +2

Coordination number: 6

Overall charge: -2

Explanation:

For the ion complex:

Na₂[Cr(NH₃)₂(NCS)₄]

The central metal is chromium, with NH₃ and NCS as the ligands.

NH₃ acts as a neutral ligand, while NCS carries a negative charge.

The entire complex has a charge of:

2Na⁺ + [Cr(NH₃)₂(NCS)₄]⁻² → -2

Since each NCS contributes -1 and there are four NCS, the Cr must possess an oxidation state of +2 to achieve an overall charge of -2.

With 2 NH₃ and 4 NCS attached, the coordination number sums to 2+4 = 6

I trust this clarifies the matter!

6 0

29 days ago

A flask that can hold 158 g of water at 4oc can hold only 127 g of ethanol at the same temperature. what is the density of ethan

lions [2649]

Answer:

The density of ethanol measures 0.80 g/ml.

Explanation:

The density of water is known to be 1 g/ml, indicating that 158 g of water occupies a volume of 158 ml.

d = m/v = 258/258 = 1 g/ml

This implies the volume will remain the same for ethanol.

hence, the density of ethanol = 127/158 = 0.80 g/ml

3 0

1 month ago

Read 2 more answers

1. Adakah benar bahawa anda tidak boleh membasuh rambut, meminum air sejuk dan

KiRa [2711]

Answer:

Is it true that you shouldn't wash your hair, drink cold water, eat ice cream, or exercise during your period? Please explain your answer.

No, this is not accurate; doing any of these activities is perfectly fine. None of them affects us because they are not connected to our bodily systems. Also, I apologize for any language errors as I utilized Google Translate.

I hope this is helpful :)

7 0

1 month ago

Assuming equal concentrations of conjugate base and acid, which one of the following mixtures is suitable for making a buffer so

KiRa [2711]

Answer:NH₃/NH₄Cl

Explanation:

The pH of a buffer can be determined using Henderson-Hasselbalch's equation.

$pH=pKa+log\frac{[base]}{[acid]}$

When the concentration of acid equals that of the base, the pH aligns with the pKa of the buffer. The ideal pH range is pKa ± 1.

Below are the buffers and their corresponding pKa values:

CH₃COONa/CH3COOH (pKa = 4.74)

NH₃/NH₄Cl (pKa = 9.25)

NaOCl/HOCl (pKa = 7.49)

NaNO₂/HNO₂ (pKa = 3.35)

NaCl/HCl Not a buffer

Thus, the ideal buffer is NH₃/NH₄Cl.

4 0

18 days ago