1,698 Answered Questions for the topic biochemistry

Biochemistry Science Biology Chemistry

01/05/21

How to answer this question ?
Dave's serum was analysed by capillary zone electrophoresis with a UV detector set at 210nm and a large potential paraprotein was seen (shaded in panel A). Subsequent immunofixation studies (not... more
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01/05/21

Formula of Copper(II) Sulfate Hydrate Lab

Data: Mass of empty dish: 50.58 gmass of crystals and dish: 55.63mass of crystals after first heating: 54.57mass of crystals after second heating: 53.82mass of crystals after third heating:... more
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Biochemistry Math Science Algebra 1

01/05/21

just need some help
What is the molarity concentration of sucrose in this sports drink?Molarity =            ( note: 1,000g of water-based fluids = 1 L )
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Biochemistry Math Science Algebra 1

01/05/21

need some more help
If this sugar was all sucrose (C12H22O11), how many moles of sucrose sugar is in 100g of this sports drink?
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Biochemistry Math Science Algebra 1

01/05/21

need some help with this
What is the molarity concentration of potassium chloride in this sports drink?Molarity =            ( note: 1,000g of water-based fluids = 1 L )
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01/05/21

help me with some science
If this potassium is put in the drink as potassium chloride (KCl2), how many moles of potassium chloride is there in 100 g of the drink?
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Biochemistry Math Science Algebra 1

01/05/21

i need some help with math
I have a box of M&M bags. Each bag contains 25 M&Ms and are 20% red, 20% brown, 16% yellow, 16% blue, 16% orange, and 12% green.Jenna needs to collect green M&Ms for a special... more
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Biochemistry Enzymes

12/30/20

Enzymes activity

explain the requirement of the NaCl solution in the effect of Temperature on Salivary Amylase Activity experiment
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Biochemistry

12/28/20

A patient receiving anti-coagulant therapy with warfarin was prescrbed the anti-epileptic drug phenobarbital by his physician.
A patient receiving anti-coagulant therapy with warfarin was prescrbed the anti-epileptic drug phenobarbital by his physician. Which of the following options should be considerad to optimize drug... more
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Biochemistry Science Biology Sat

12/27/20

How should I answer this question ?
Okay so this is the backround: A 45 year-old woman complaining of breast pain was diagnosed with having HER2-positive breast cancer. The patient underwent lumpectomy followed by a period of... more
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Biochemistry Biology Microbiology

12/23/20

Different Agar - MicroBio
Hi!I wonder, when determining the amount of CFU/g in ground meat, why is it more better to use TGE agar (tryptone glucose extract agar) than other types of agar, such as nutrient agar?Thanks!
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12/23/20

What is the differential diagnosis of HER2 positive breast cancer ?
What is the differential diagnosis of HER2 positive breast cancer ?
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Biochemistry Protein Denaturation

12/22/20

protein denaturation
write a simple technique that can be conducted in the laboratory to identify the effect of shaking and freezing on protein denaturation.
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Biochemistry Biology Microbiology

12/22/20

Ground Beef Bacteria
Hi!I wonder: can mold and yeast also cause ground beef to go bad? Or is it only bacteria in ground beef that causes the change in color etc after expiration date?
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Biochemistry Chemistry

12/17/20

Answer the following questions relating to pH and concentration
Determine the following: The pH of 8.3 x 10-2M barium hydroxide The [H3O+] of 9.8 x 10-9M hydrocyanic acid The pOH of 1.7 x 10-3M calcium hypochlorite Will a solution of 0.1M ammonium benzoate... more
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12/15/20

Questions please help
A 45 year-old woman complaining of breast pain was diagnosed with having HER2-positive breast cancer. The patient underwent lumpectomy followed by a period of chemotherapy including adjuvant... more
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12/15/20

question about cancer
A 45 year-old woman complaining of breast pain was diagnosed with having HER2-positive breast cancer. The patient underwent lumpectomy followed by a period of chemotherapy including adjuvant... more
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12/15/20

Breast Cancer Problem
A 45 year-old woman complaining of breast pain was diagnosed with having HER2-positive breast cancer. The patient underwent lumpectomy followed by a period of chemotherapy including adjuvant... more
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12/13/20

Chemistry: Pi Bonding
What atomic or hybrid orbitals make up the  bond between C1 and C2 in dichloroethylene, CH2CCl2 ?Orbital on C1?Orbital in C2?How many σ bonds does C1 have in CH2CCl2 ? How many  bonds does C1 have ? 
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12/13/20

Chemistry: Pi Bonding
If an atom has sp3 hybridization in a molecule:The maximum number of σ bonds that the atom can form is _____The maximum number of p-p  bonds that the atom can form is ____
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12/12/20

Chemistry: Pi Bonding
If an atom has sp2 hybridization in a molecule:The maximum number of σ bonds that the atom can form is _____The maximum number of p-p  bonds that the atom can form is _____
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12/12/20

Chemistry: Pi Bonding

What atomic or hybrid orbitals make up the  bond between C1 and C2 in propyne, CHCCH3 ?Orbital on C1?Orbital on C2?How many σ bonds does C1 have in CHCCH3 ? How many  bonds does C1 have ? 
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12/12/20

Sigma Bonds and Hybrid Orbitals
What atomic or hybrid orbitals make up the sigma bond between C and H in methane, CH4?orbital on C?orbital on H?What is the approximate H-C-H bond angle?______°
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Biochemistry Math Biology Physics

12/12/20

Serial dilution/dilution factor problem
How would you prepare a 10-2 and 10-4 dilutions if you are provided with 2 saline tubes each containing 4.95ml saline and a tube of undiluted culture.What is the initial concentration of undiluted... more
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12/08/20

Choose all correct answers. The plasma membrane...
Choose all correct answers:The plasma membrane...A.Contains Cholesterol moleculesB.Is formed of phospholipids; with polar and non-polar structuresC.Contains DNA moleculesD.Has two identical faces... more
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