Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 31, Problem 8RQ
Which factors affect soil quality?
- chemical composition
- history of the soil
- presence of living organisms and topography cl. all of the above
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Older adults have unique challenges in terms of their nutrient needs and physiological changes. Some changes may make it difficult to consume a healthful diet, so it is important to identify strategies to help overcome these obstacles.
From the list below, choose all the correct statements about changes in older adults.
Select all that apply.
Poor vision can make it difficult for older adults to get to a supermarket, and to prepare meals.
With age, taste and visual perception decline.
As people age, salivary production increases.
In older adults with dysphagia, foods like creamy soups, applesauce, and yogurt are usually well tolerated.
Lean body mass increases in older adults.
When physical activity increases, energy requirements increase also. Depending on the type, intensity, and duration of physical activity, the body’s requirements for certain macronutrients may change as well.
From the list below, choose all the correct statements about the effects of increased physical activity or athletic training.
Select all that apply.
An athlete who weighs 70 kg (154 lb) should consume 420 to 700 g of carbohydrate per day.
How much additional energy an athlete needs depends on the specific activity the athlete engages in and the frequency of the activity.
Those participating in vigorous exercise should restrict their fat intake to less than 15%% of total energy intake.
Athletes who are following energy-restricted diets are at risk for consuming insufficient protein.
The recommendation to limit saturated fat intake to less than 10%% of total energy intake does not apply to athletes or those who regularly engage in vigorous physical activity.
When taking vitamins and vitamin-mineral supplements, how can one be sure they are getting what they are taking?
Chapter 31 Solutions
Biology 2e
Ch. 31 - Figure 31.6 Soil compaction can result when soil...Ch. 31 - Figure 31.7 Which horizon is considered the...Ch. 31 - Figure 31.10 Farmers often rotate corn (a cereal...Ch. 31 - For an element to be regarded as essential, all of...Ch. 31 - The nutrient that is part of carbohydrates,...Ch. 31 - Most ____ are necessary for enzyme function....Ch. 31 - What is the main water source for land plants?...Ch. 31 - Which factors affect soil quality? chemical...Ch. 31 - Soil particles that are 0.1 to 2 mm in diameter...Ch. 31 - A soil consists of layers called that taken...
Ch. 31 - What is the term used to describe the solid rock...Ch. 31 - Which process produces an inorganic compound that...Ch. 31 - Through mycorrhization, a plant obtains important...Ch. 31 - What term describes a plant that requires...Ch. 31 - What is the term for the symbiotic association...Ch. 31 - What type of plant problems result from nitrogen...Ch. 31 - Research the life of Jan Babtista van Helmont What...Ch. 31 - List two essential macronutrients and two...Ch. 31 - Describe the main differences between a mineral...Ch. 31 - Name and briefly explain the factors that affect...Ch. 31 - Describe how topography influences the...Ch. 31 - Why is biological nitrogen fixation an...Ch. 31 - What is the main difference, from an energy point...Ch. 31 - Why is a root nodule a nutritional adaptation of a...
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