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- Question
Which of the following statements describes the glycemic index of foods?
Options- A. the extent to which a given food raises blood glucose and insulin levels
- B. the amount of insulin required to metabolize 100 grams of glucose
- C. an individual?s glucose/insulin ratio in a fasted state
- D. the glucose content of a given food
- Correct Answer
- the extent to which a given food raises blood glucose and insulin levels
ExplanationThe glycemic index or glycaemic index is a number associated with the carbohydrates in a particular type of food that indicates the effect of these carbohydrates on a person's blood glucose (also called blood sugar) level. A value of 100 represents the standard, an equivalent amount of pure glucose.
The GI represents the rise in a person's blood sugar level two hours after consumption of the food.
- 1. Which of these is an example of negative feedback?
Options- A. After you eat, insulin stimulates the lowering of blood sugar levels.
- B. Once labor begins, contractions increase in frequency and intensity.
- C. After you eat, glucagon stimulates an increase in blood sugar levels.
- D. As a blood clot begins to form, the process of its formation gets faster and faster. Discuss
- 2. Plant cell walls consist mainly of
Options- A. Chitin
- B. peptidoglycan
- C. cellulose
- D. chlorophyll Discuss
- 3. Cold foods should be kept at a temperature of
Options- A. < 5 deg Celcius
- B. > 18 deg Celcius
- C. > 41 deg Celcius
- D. < -18 deg Celcius Discuss
- 4. Plants are photosynthetic autotrophs. What does this mean? Discuss
- 5. What role does photosynthesis play in the carbon cycle? Discuss
- 6. What is the science of mapmaking called?
Options- A. Coriography
- B. Cartography
- C. Photograrnmetry
- D. Mapping Discuss
- 7. Which process removes carbon dioxide from the atmosphere?
Options- A. Combustion
- B. Photosynthesis
- C. Respiration
- D. All of the above Discuss
- 8. Biogeochemical cycles are crucial to ecosystem function because
Options- A. they keep the planet warm enough for living things to survive
- B. energy flows through ecosystems in one direction only and is eventually dissipated as heat
- C. they prevent catastrophic extinctions
- D. nutrients and other life-sustaining molecules are in limited supply and must be continually recycled Discuss
- 9. Which of the following is a function of the geosphere?
Options- A. providing a moderate, livable climate
- B. serving as the interface between the other spheres
- C. facilitating the movement of water through spheres through transpiration
- D. facilitating the process of photosynthesis Discuss
- 10. Photosynthesis contributes to plant growth by
Options- A. taking in carbon dioxide and making carbohydrates (sugars)
- B. converting sugar to oxygen and water
- C. taking in oxygen and making wood
- D. synthesizing carbon dioxide and making cellulose Discuss
General Science problems
Search Results
Correct Answer: After you eat, insulin stimulates the lowering of blood sugar levels.
Explanation:
Eating raises blood sugar levels, insulin stimulates the lowering of blood sugar level. In this example the response to the stimulus (increased blood sugar levels) opposes that stimulus (by lowering blood sugar levels).
Correct Answer: cellulose
Explanation:
Plant cell walls are mostly made up of the molecule cellulose. Cellulose is a polysaccharide, a complex sugar made of long chains of glucose.
The cell wall must be made of thick and strong material as it provides the structural shape of the plant and protection from insects and microorganisms.
Correct Answer: < 5 deg Celcius
Explanation:
To reduce the risk of bacterial contamination, many foods must be stored in the refrigerator and thus kept below 5 degrees Celsius. These foods are often classified as ?high-risk foods? and include ? meat, poultry, dairy, seafood, eggs, smallgoods and cooked rice and pasta. This also refers to ready-to-eat foods that have high-risk foods as ingredients and include ? casseroles, quiche, pasta salad, pizza, sandwiches and many cakes.
By keeping these high-risk foods under 5 degrees Celsius it stops them from entering the ?danger-zone? ? temperatures between 5 degrees Celsius and 60 degrees Celsius. The danger-zone is the temperature zone which provides bacteria with the perfect environment to rapidly grow and multiply to numbers that cause food poisoning.
Correct Answer: Plants are photosynthetic autotrophs, which means that they are able to produce their own food through the process called photosynthesis In photosynthesis, plants use light, water, and carbon dioxide to create glucose, which they convert to cellulose and use to make new cells Hence, that is why, Plants are called photosynthetic autotrophs
Correct Answer: In the process of photosynthesis, plants need the sun's energy, water to make food for themselves in the form of ATP ( adenosine triphosphate ) , which is packages of energy Carbon : coming into the plants ( or algae ) along with water make those ATP into a bigger molecule, which is know as glucose Formula: 6 CO2 + 6 H2O + Suns Energy -> glucose + oxygen Photosynthesis has an affect on the carbon cycle because it reduces the amount of CO2 in the air and redirects it into sugars which feeds animals as well as humans Hence, Photosynthesis removes CO2 from the atmosphere and replaces it with O2
Correct Answer: Cartography
Explanation:
The art and science of map making is called Cartography.
Correct Answer: Photosynthesis
Explanation:
Photosynthesis process removes carbon dioxide from the atmosphere. Green plants remove carbon dioxide from the atmosphere by photosynthesis.
The level of carbon dioxide in the atmosphere is maintained by several processes, including photosynthesis, respiration and combustion.
Correct Answer: nutrients and other life-sustaining molecules are in limited supply and must be continually recycled
Explanation:
Biogeochemical cycles are crucial to ecosystem function because ::
1. Chemical elements are available in only limited amounts and must be recycled.
2. Nutrients and other life-sustaining molecules are in limited supply and must be continually recycled.
Correct Answer: serving as the interface between the other spheres
Explanation:
The geosphere is the earth's solid rock or rigid outer layer known as the crust. Without the geosphere it would not be possible for humans to live on the planet. The function of the geosphere serving as the interface between the other spheres.
Correct Answer: taking in carbon dioxide and making carbohydrates (sugars)
Explanation:
Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that can later be released to fuel the organisms activities.
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