Nutrition & You (4th Edition)
4th Edition
ISBN: 9780134167541
Author: Joan Salge Blake
Publisher: PEARSON
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Chapter 9, Problem 2TF
Summary Introduction
To examine: Whether the statement “Red wine contains phytochemicals that are good for your heart” is true or false.
Concept introduction: Alcohol is substance that is psychoactive that is also the active ingredient in recreational drinks such as wine, beer and other types of liquor. The main alcohol present in these recreational liquors is ethanol. Wine is a type of alcohol that is produced from grapes. There are two types of wine: red wine and white wine.
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- For an element to be regarded as essential, all of the following criteria must be met, except: No other element can perform the function The element is directly involved in plant nutrition The element is inorganic The plant cannot complete its lifecycle without the element.arrow_forwardWhich of the following statements is incorrect? a. Pigments absorb light of certain wavelengths only. b. Many accessory pigments are multipurpose molecules. c. Chlorophyll a is green because it absorbs green light.arrow_forwardA secondary plant compound might be used for which of the following? a. a new crop variety b. a new drug c. a soil nutrient d. a crop pestarrow_forward
- Which color(s) of light does chlorophyll a reflect? a. red and blue b. green c. red d. bluearrow_forwardCarbon, hydrogen, and oxygen are _______ for plants. a. macronutrientsd b. micronutrientse c. trace elements d. required elements e. both a and b f. both a and darrow_forwardWhich factors affect soil quality? chemical composition history of the soil presence of living organisms and topography cl. all of the abovearrow_forward
- Soil particles that are 0.1 to 2 mm in diameter are called _____________. sand silt clay loamarrow_forwardMost ____ are necessary for enzyme function. micronutrients macronutrients biomolecules essential nutrientsarrow_forwardIn 1976, a team of chemists in the United Kingdom was developing new insecticides by modifying sugars with chlorine Cl2, phosgene Cl2CO, and other toxic gases. One young Member of the team misunderstood his verbal instructions to test a newly made candidate substance. He thought he had been told to taste it. Luckily for him, the substance was not toxic, but it was very sweet. It became the food additive sucralose. Sucralose has three chlorine atoms substituted for three hydroxyl groups of sucrose table sugar. It binds so strongly to the sweet-taste receptors on the tongue that the human brain perceives it as 600 times sweeter than sucrose. Sucralose was originally marketed as an artificial sweetener called Splenda, but it is now available under several other brand names. Researchers investigated whether the body recognizes sucralose as a carbohydrate. They began by feeding sucralose labeled with 14C to volunteers. Analysis of the radioactive molecules in the volunteers urine and feces showed that 92.8 percent of the sucralose passed through the body without being altered. Many people are worried that the chlorine atoms impart toxicity to sucralose. How would you respond to that concern?arrow_forward
- Figure 31.6 Soil compaction can result when soil is compressed by heavy machinery or even foot traffic. How might this compaction change the soil composition?arrow_forwardA secondary plant compound might be used for which of the following? a new crop variety a new drug a soil nutrient a pest of a crop pestarrow_forwardWhich is the better choiceto eat processed foods that have been enhanced with phytochemicals or to eat natural foods that are rich in phytochemicals?arrow_forward
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