4. What elements are found in the following compounds?
a) carbohydrates
b) proteins
c) lipids
d) nucleic acids
5. Imagine that your favourite house plant is growing well but it is not flowering. A friend suggests that your plant may be lacking phosphorus. Is that a possibility? Explain your answer.
6. Explain the term “optimum amount” using one of the following as an example: potassium for plants or selenium for animals.
7. Which term in each of the following groups of four terms includes the other three?
a) carbohydrate, glycogen, starch, glucose
b) sugar, DNA, phosphate, nitrogencontaining base
c) fats, waxes, oils, lipids
8. Suppose you are a farmer and your crop is not growing as well as it has in the past. You notice that the lower leaves of the plants are turning yellow. Recall that chlorophyll gives leaves their green colour and is important in photosynthesis. Use the table on page 197 to help you answer the following questions.
a) What nutrient deficiencies might be causing this problem?
b) What would be your next step to solve the problem?
9. A sample solution was sent to a laboratory for examination. When Benedict’s solution was added, and the sample was heated, a red precipitate formed. When Biuret solution was added, the sample remained blue. What substance was identified in the solution?
10. Define the following terms:
a) diffusion
b) osmosis
c) active transport
11. What is the substrate for the lichen in Figure 1.30(b)?
12. What happens to food when you ingest it?
13. What effect do hydrolysis enzymes have on the rate at which large organic molecules break down?
14. Plants take in water from the soil. Why does the water move from the soil into a plant’s roots?
15. a) How is the process of diffusion similar to active transport?
b) How are the two processes different?
16. Why are the algae that live on snow able to survive high in the Rockies in early summer?
17. a) Write a hypothesis for an experiment to show the effect of temperature on the rate of
diffusion.
b) Identify the manipulated and responding variables.
c) Write the procedure for the experiment.
and this on all answers plz have
Answers
Answer:
) carbohydrates
b) proteins
c) lipids
d) nucleic acids
5. Imagine that your favourite house plant is growing well but it is not flowering. A friend suggests that your plant may be lacking phosphorus. Is that a possibility? Explain your answer.
6. Explain the term “optimum amount” using one of the following as an example: potassium for plants or selenium for animals.
7. Which term in each of the following groups of four terms includes the other three?
a) carbohydrate, glycogen, starch, glucose
b) sugar, DNA, phosphate, nitrogencontaining base
c) fats, waxes, oils, lipids
8. Suppose you are a farmer and your crop is not growing as well as it has in the past. You notice that the lower leaves of the plants are turning yellow. Recall that chlorophyll gives leaves their green colour and is important in photosynthesis. Use the table on page 197 to help you answer the following questions.
a) What nutrient deficiencies might be causing this problem?
b) What would be your next step to solve the problem?
9. A sample solution was sent to a laboratory for examination. When Benedict’s solution was added, and the sample was heated, a red precipitate formed. When Biuret solution was added, the sample remained blue. What substance was identified in the solution?
10. Define the following terms:
a) diffusion
b) osmosis
c) active transport
11. What is the substrate for the lichen in Figure 1.30(b)?
12. What happens to food when you ingest it?
13. What effect do hydrolysis enzymes have on the rate at which large organic molecules break down?
14. Plants take in water from the soil. Why does the water move from the soil into a plant’s roots?
15. a) How is the process of diffusion similar to active transport?
b) How are the two processes different?
16. Why are the algae that live on snow able to survive high in the Rockies in early summer?
17. a) Write a hypothesis for an experiment to show the effect of temperature on the rate of
diffusion.
b) Identify the manipulated and responding variables.
c) Write the procedure for the experiment.
and this on all answers plz have