1,708 Answered Questions for the topic biochemistry

Biochemistry

04/11/20

The cyclic form of sugars
a. has one more chiral center (the anomeric carbon) than the open-chain form. b. loses a chiral center compared to the open-chain form. c. is not usually found in nature. d.... more
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04/11/20

Chemistry question

According to measurements, most people's exposure to naturally-occurring background radiation comes from what source? smoke detectors X-rays radon gas nuclear power plants medical waste
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04/11/20

Chemistry question
What are chylomicrons? enzymes that remove amino acids from the N-terminal end of peptides and proteins possessing a free amino group hormones secreted in the small intestine that stimulate the... more
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04/11/20

Chemistry question
Some fats and oils undergo oxidation and hydrolysis reactions when they come into contact with moist air at room temperature and acquire a characteristic disagreeable odor. This property of fats... more
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04/11/20

Chemistry question
The following are carbohydrates except _________. erythrose triglycerides xylulose ribose mannose
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04/11/20

Chemistry question
Why are radioactive isotopes used for various applications? Select all correct responses. We can detect the radioactivity. We can use the energy given off. They are all artificially produced. They... more
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04/11/20

Chemistry question
Which of the following is likely NOT a source of exposure to radiation? medical sources one's own body consumer products radon gas the water we drink
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04/11/20

Chemistry question
Glycerol is used for the synthesis of all except _______. glycolipids phospholipids diacylglycerols glucose triacylglycerols
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04/10/20

Chemistry question

Name this derivative of benzene.
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04/10/20

Chemistry question
Organic chemistry historically arose from the study of compounds from what source? the elements living things medicine geological samples the dye industry
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04/10/20

Chemistry question
Why is half-life such a useful concept for understanding radioactive processes? Having a half-life implies radioactive decay by alpha emission. A half-life is a characteristic value for a given... more
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04/10/20

Chemistry question

Choose the incorrect statement about fatty acids from the following. Fatty acids usually contain an even number of carbon atoms. Membrane lipids contain mostly unsaturated fatty acids. The melting... more
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04/08/20

Chemistry question
Which statement is true regarding catabolic pathways? Catabolic reactions consume energy. Catabolism occurs only in vertebrates.  Catabolic pathways are used to construct macromolecules such as... more
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04/08/20

Chemistry question
Which of the following sugars is predominantly levorotatory? galactose fructose starch sucrose glucose
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04/08/20

Chemistry question
How many isomers exist that have the molecular formula C4H10? three one four none two
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04/07/20

Chemistry question
Consider the ionic compound, sodium sulfate decahydrate salt, Na2SO4.10H2O a)      Calculate the molar mass of the salt and give appropriate units. Note the following atomic masses, Na = 23; S= 32;... more
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04/07/20

chemistry question
Given the following equation, which is the correct form of the conversion factor needed to convert the number of moles of O2 to the number of moles of Fe2O3 produced?           4Fe + 3O2 → 2Fe2O3
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04/07/20

chemistry question

Water has a specific heat of 1.00 cal/g°C and wood has a specific heat of 0.10 cal/g°C. Which substance requires more heat to be warmed from room temperature to 50°?A.  They both require the same... more
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Biochemistry Biology Microbiology

04/04/20

I HAVE BIO QUESTIONS I NEED HELP ON!!!
1) What is the purpose of using I2KI when determining amylase activity? 2) How do enzymes speed up reactions? Be brief but specific in your description. 3) How does temperature and pH affect the... more
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04/02/20

When a 28.4 mL sample of a 0.416 M aqueous hydrofluoric acid solution is titrated with a 0.418 M aqueous potassium hydroxide solution,
When a 28.4 mL sample of a 0.416 M aqueous hydrofluoric acid solution is titrated with a 0.418 M aqueous potassium hydroxide solution,(1) What is the pH at the midpoint in the titration? (2) What... more
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Biochemistry Math Chemistry

04/02/20

how many grams of iron are needed to produce
How many grams of iron are needed to produce 36.4 L of hydrogen gas according to the following reaction at 25 °C and 1 atm?iron (s) + hydrochloric acid(aq)iron(II)... more
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04/01/20

a sample of oxygen, helium-filled ballon?
A sample of oxygen gas occupies a volume of 7.02 L at 52.0°C and 0.650 atm.If it is desired to decrease the volume of the gas sample to 4.59 L, while increasing its pressure to 0.800 atm, the... more
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Biochemistry

03/31/20

Type 1 and 2 Diabetes
Diabetes is characterized by the over production of glucose by the liver. Describe the biochemical differences between Type 1 and Type 2 diabetes, and how this leads to high blood sugar in both... more
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03/31/20

Chemistry question about ionic compound
In chemistry, any ionic compound (soluble or insoluble) that is formed from a reaction between an acid and a base is called a(n) _________. ionic compound substance salt product neutralization
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03/30/20

Chemistry question about amphiprotic species
Which of these species are amphiprotic? Select all that are correct. H2PO4- H2O HSO4- Cl- H3PO4
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