1,708 Answered Questions for the topic biochemistry

Biochemistry Science Biology Chemistry

01/13/21

What does metabolic profiling study provide that is unique to the metabolomics alone and not to any other ''Omics'' ?
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01/12/21

Which of the answer(s) true ?
Which of the following is characteristic of the DNA methylation process ? Select one or ones that apply.A.) S-adenosyl methionine (SAM)B.) Histone acetyl transferases (HATs)C.) Histone deacetylases... more
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Biochemistry Biology Microbiology

01/12/21

CFU per gram calculation
Hi!I took a sample of 5 grams of ground beef and diluted it to the factor 10^-6 with sterilized water. Afterward I took 1 ml of the the sample and used pour plate method to calculate amount of CFU.... more
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Biochemistry Chemistry

01/07/21

If a cell combined 5 lactose molecules and 15 glucose molecules to make glycogen using dehydration synthesis, how many molecules of water would be generated?
If a cell combined 5 lactose molecules and 15 glucose molecules to make glycogen using dehydration synthesis, how many molecules of water would be generated?a,24  b. 25  c. 19  d. 20 
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Biochemistry Biology

01/06/21

HDAC inhibitors are can be used to treat cancer. The outcome of their molecular function is that they repress the acetylation of histones ?
HDAC inhibitors are can be used to treat cancer. The outcome of their molecular function is that they repress the acetylation of histones.True or False ?
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Biochemistry Biology

01/06/21

METHYLATED DNA QUESTION
In general, when considering the role of epigenetic marks and gene expression which of the following statements is true;Unmethylated DNA combined with deacetylated histones in the gene promotor... more
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01/06/21

What is the universal methyl donor which is used by DNA methyltransferase enzymes to methylate?
What is the universal methyl donor which is used by DNA methyltransferase enzymes to methylate DNA (and is utilised to methylate other biological molecules including histones)?1. Homocysteine2.... more
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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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