Answer:
I would say Option B
Explanation:
A controlled experiment is where you have two or more independent variables, that way you have an experiment to compare results with.
A man wakes up after eight hours of normal sleep and has an unbroken range of his blood pressure gauge. There is a good chance that the man has no sleep disturbances.
<h3>Snap*Gauge® </h3>
Snap*Gauge® is a non-prescription device used by the patient during sleep to determine if a patient breaks pre-set snap-gauges with different release-force constants. The number of brands broken will indicate the intensity of the patient's nighttime erections.
With this information, we can conclude that a man wakes up after eight hours of normal sleep and has an unbroken range of his blood pressure gauge. There is a good chance that the man has no sleep disturbances.
Learn more about snap-gauges in brainly.com/question/13025850
Answer:
Cardiac tamponade condition reduces the ability of heart contraction.
Explanation:
Cardiac tampondae is a medical condition in which the pericardium sac fills with blood and causes various health related problems in the individuals.
Individuals with cardiac tampondae suffers from the low blood pressure, anxiety, shortness of breath and pain in chest, neck and shoulder. The serious condition of cardiac tampondae increase the pressure on heart and reduces the ability of heart to contract.
Answer:
hydroxylation of phenylalanine to tyrosine
Explanation:
Phenylketonuria is an inherited disease that results from the lack of the enzyme phenylalanine hydroxylase (PAH), which catalyzes the hydroxylation of phenylalanine go tyrosine. A build up of phenylalanine could result to mental instability , intellectual problems and seizures. This is because of the body’s inability to convert phenylalanine to tyrosine.
Tyrosine is an important amino acid which helps in the production of neurotransmitters which ensures proper functioning of the brain cells.
Answer:
Conversion of alcohols to alkenes: R-CH2-CHOH-R → R-CH=CH-R + H2O
Conversion of carboxylic acids to acid anhydrides 2 RCO2H → (RCO)2O + H2O
Explanation:
Dehydration
In chemistry, a dehydration reaction is one that involves the loss of water. In organic synthesis, where an acid is often used as a catalyst, there are numerous examples of dehydration reactions: Conversion of alcohols to ethers: 2 R-OH → R-O-R + H2O Conversion of alcohols to alkenes: R-CH2-CHOH-R → R-CH=CH-R + H2O Conversion of carboxylic acids to acid anhydrides 2 RCO2H → (RCO)2O + H2O Conversion of amides to nitriles: RCONH2 → R-CN + H2O
Sources:
Klein Organic Chemistry. 2th edition
Mcmurry's Organic Chemistry. 9th edition.