1,722 Answered Questions for the topic biochemistry

03/10/19

why does ATP have high potential energy?
a. Four negative charges clustered together in the three phosphate groups raise the potential energy of the bonds.b. The repulsion between ribose and the phosphate groups raises the potential... more
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03/09/19

Nucleotide structure question
https://quizlet.com/_69plfz (image is at the top)What is true of the picture above it is an RNA molecule it is a DNA molecule #1 is a purine #2 is a pyrimidine . the molecules 5' end is the... more
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03/09/19

Saline hypertonic/hypotonic/isotonic question
A nurse attaches an IV to a patient that provides a saline solution that is 5% sodium chloride and 5% potassium phosphate and contains no other solutes. If the total solute concentration of a red... more
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03/09/19

Which of the following atoms can participate in hydrogen bonds?
a. carbonb. oxygenc. nitrogend. b and ce. all of the above
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03/09/19

Phospholipid Bilayer Question
Question: At the start of an experiment, a phospholipid-bilayer membrane that contains the glucose transporter (GLUT-1) but no other proteins separates a 1-liter solution of 1M NaCl (on the right)... more
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03/09/19

If the pH of a solution is 10 and the concentration of protons is increased 10 fold by the addition of acid what is the new concentration of protons?
a. 10^-10 Mb. 10^-11 Mc. 10^-9 Md. 1 Me. none of the above
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03/09/19

If you disrupt all hydrogen bonds in a protein what level of structure will be preserved?
a. tertiaryb. secondaryc. primaryd. quaternarye. all of the above
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03/09/19

What bonds must be destroyed for an RNA chain to be broken down into its monomeric nucleotides?
A. Phosphodiester bondsB. Covalent bondsC. Hydrogen bondsD. A and Be. A, B, and C
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Biochemistry Comprehensive Science

03/07/19

Which part of the brain helps maintain balance? a. cerebrum. b. brain stem. c. spinal cord. d. cerebellum.
Divisions of the Nervous System
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Biochemistry Comprehensive Science

03/07/19

Which of the following protects the spinal cord? a. sensory neurons. b. interneurons. c. vertebrae. d. none of the above.
Divisions of the Nervous System
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03/07/19

Which part of the cerebrum is associated with hearing and memory? a. Spinal cord c. Frontal lobe b. Temporal lobes d. Cerebellum
Divisions of the Nervous System
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Biochemistry

03/03/19

Calculate the volume of solute needed to make 750.0mL of 3.7% (w/v) sodium lactate solution?
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02/27/19

NH3 has a pKb of 4.74. What is the pH of a 3.2 x 10-4 mol L-1 NH3 solution?
I did this question 4 times and got it wrong, I keep getting 13 but the correct answer is 9.83, can someone please explain this to me?
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02/17/19

What type of reactions can CH3CH2NH+OH undergo?
Please Help! i don't know how to answer thisWhat type of reactions can CH3CH2NH+OH undergo?
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02/17/19

What type of reactions can CH3-CH2-O-CH=O undergo?
What type of reactions can CH3-CH2-O-CH=O undergo?Ive been stuck on this question for a few days now, I would really appreciate some help!
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Biochemistry Chemistry Maths

02/13/19

Include all the quantities required, concisely describe how you would make 50mL of a 0.5% (w/v) solution of BSA (molecular weight: 66 400) using water as a diluent
Include all the quantities required, concisely describe how you would make 50mL of a 0.5% (w/v) solution of BSA (molecular weight: 66 400) using water as a diluent
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Biochemistry Biology Chemistry

02/13/19

Predicting the concentration without doing any calculations

I’m very confused on this question.5 marksYou and Noel, your lab partner, had used the Beer-Lambert Law to calculate the concentration of light-absorbing solute, knowing its molar extinction... more
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Biochemistry Biology

02/11/19

The two individual strands of a double helix of DNA are held together by (note: adenine = A; cytosine = C; thymine = T; guanine = G)
A. Two hydrogen bonds between A and T, and three hydrogen bonds between C and GB. Three hydrogen bonds between A and C, and three hydrogen bonds between T and GC. Two hydrogen bonds between A and... more
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12/19/18

How do I memorize a whole chemistry book for a big test?
I am studying in high school to be a doctor.Now I have lots of big tests for every subject I have, but my main concern is the big chemistry test in five months, which will set my last grade for the... more
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Biochemistry Organic Chemistry Chem

12/10/18

C12H22O11(aq)+H2O(g)->4C2H5OH(l)+4CO2(g) Find the theoretical yield and the percent yields of ethanol if 680.g sucrose undergoes fermentation and 303.5g ethanol is obtained.
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12/09/18

Chemistry Homework Help
An NaoH solution was prepared by diluting 3.00 mL of a 20.0 M NaOH stock solution to a final volume of 500 mL. What is the molarity of the new solution?
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12/05/18

CHEMISTRY QUESTION

I've tried this question again and again but my solution is incorrect... can someone pls help me?What amount of thermal energy (in kJ) is required to convert 40.7 g of ethanol at -158 °C completely... more
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11/30/18

Equilibrium help

the reactions for 1 and 2 below, take place at 20°C, and answer the following questions.1) H​2S​ O​3(​ g) ⟶ SO​2(​ g) + H​2​O(g) △Go​ ​ = +25kJ mol-​ 12) H​2(​ g) + Cl​2(​ g) ⟶ 2 HCl(g) △Go​ ​ =... more
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11/30/18

What is the molecular geometry and why?

XeCl​2​ , ICl​3​ , TeF​4​ , PCl​5what is the molecular geometry of these and why
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11/28/18

I need help on finding the initial equilibrium concentrations

A+2B=3cthe reaction mixture is samples prior to the equilibrium being reached. It is determined that the reaction must proceed to the left for equilibrium to be reached. When the reaction mixer is... more
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