write an 7 pages essay on Lipid

What is primary productivity? Give brief description of factors that affect primary productivity.

Describe the components of an ecosystem.

Mention a few examples to use of microbes in household products

What is sewage? In which way can sewage be harmful to us?

Lab 1: Using the Scientific Method Worksheet

At a local town meeting, one of your neighbors complains that a nearby residence is killing his flowers because of the chemicals he uses to wash his cars. He claims that the soap runs into a stream that flows very close to his flower beds. As an inquiring student of science, you wonder whether soap can truly affect flower growth.

Based on the observation given to you, use the following questions to explain how you would set up your experiment and analyze your results.

1.       State your hypothesis. Remember that a hypothesis must be specific and testable. For example, stating that detergents are bad is not a good hypothesis (“Bad” is a generic term, it would be better to use a metric that is measurable).

2.       Explain how you would set up your control and treatment groups. What would be the same between the groups and what would be different? What species would you use for each group and how many plants total would you use?

3.       How would you collect your data for your experiment? What tools and units of measurement would you use? How often would you collect data and would you use the same methodology for both your treatment and control groups? Be specific in your answers.

In every experiment, there are some unintentional differences between the control and treatment groups. These are called sources of error. If these sources of error can be corrected we call them avoidable sources of error. An example of an avoidable source of error may be the amount of water provided to the plant. We can avoid this error by watering the plants in each group, the same amount at the same time of the day.

4. List some possible sources of avoidable and unavoidable error in your fertilizer experiment that were provided to you as examples.

5..       Explain the difference between a theory and a hypothesis.

6.       Explain the difference between the ‘everyday’ use of the word theory and the definition of a scientific theory.

7.       Why is it important to educate people on the true definition of “theory”?

What is the osmolarity of distilled water? what is the osmolarity of 40mM CaCl2?

Is it hypertonic, isotonic or hypotonic?

1. There are a number of different vectors that are used for different purposes in research and for biotechnolgy. Compare the use of a Ti plasmid in gnerating a transgenic plant with the use of a BAC in sequencing the human genome.

List two essential roles of ribosome during translation. (NCERT)

The true statement about ‘green-house effect’ is that it is

(a) caused by combination of many gases

(b) caused only by CO₂

(c) caused by CO₂, CFC, CH₄ and NO₂ gases

(d) none of these.

Which of the following is the most stable ecosystem?

(a) mountain

(b) ocean

(c) forest

(d) desert.

Green house effect is warming due to

(a) infra-red rays reaching earth

(b) moisture layer in atmosphere

(c) increase in temperature due to increase in carbon dioxide concentration of atmosphere

(d) ozone layer of atmosphere.

1. What are storage granules, and why are they important to the cell?

2. Why do you need a special staining procedure for flagella?

1. In this question, circle the best answer within the parentheses. FR = functional response.

a. Compare search time: FR 1(> / = / <) FR 3.

b. Compare handling time: FR 1 (> / = / <) FR 2.

c. Which portion of the type 2 functional response isinfluenced by search time (low prey density/ high prey density), and handling time (low prey density / high prey density)?

2. One mechanism suggested to maintain biodiversity is that a species has relatively high performance when it is rare (regardless of environmental factors). Which functional responsewould help maintain biodiversity in this way? _________

3. For animals, tradeoffs may exist between foraging and predator avoidance, because time spent being vigilant against predators is time lost from feeding. Based on the principle of allocation, and considering ways that plants avoid herbivores, describe a tradeoff for plants.

Soil fertility is reduced by

(a) crop rotation

(b) nitrogen fixing bacteria

(c) decaying organic matter

(d) intensive agriculture.