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Questions in biology

[Terjawab] (i) The additional circular pieces of DNA present in a bacterial cell are: (a) RNA (b) nucleotides (c) chromatids (d) plasmids (ii) What may be the objective of genetic modifications of plants? (a) Production of disease resistant plants (b) Improvement in nutritional quality of plants (c) Production of herbicide resistant plants (d) All of these (iii) Plasmid and attached foreign gene with it are collectively called: (a) recombinant cell (b) recombinant DNA (c) recombinant plasmid (d) recombinant chromosome (iv) The organisms whose cells and plasmids are usually used in genetic engineering are: (a) bacteria (b) fungi (c) algae (d) viruses (v) Sections of DNA serving as codes for developing characters in an organism are called: (a) genes (b) nucleotides (c) plasmids (d) proteins (vi) Which of the following is not a biotechnology product? (a) Insulin (b) Quinine (c) Beta-endorphin (d) Interferon (vii) How do genetic engineers get insulin for diabetic patients? (a) Isolate from human pancreas (b) Isolate from pancreas of other animals (c) Insulin gene inserted in human pancreas (d) Insulin gene inserted in bacteria

[Terjawab] Which product of respiration is considered waste material and leaves the alveoli? A. oxygen B. water C. carbon dioxide D. carbon monoxide

[Terjawab] What is the term for biologically mediated transfer of water to the atmosphere, primarily by plants? A) Evaporation B) Transpiration C) Precipitation D) Infiltration

[Terjawab] 1. I jump really high, my skin is smooth and I breathe through it. Frog 2. I live in Cuba, I'm the smallest bird, and weigh 1.6 grams. 3. I soar high in the sky, searching for dead animals to eat. I have a hooked beak with excellent eyesight. Paule

[Terjawab] 1. Why are individuals different from one another? 2. How are traits passed on from one generation to the next? 3. How many chromosomes do humans have?

[Terjawab] The world's population of cheetahs has very little genetic diversity. The population has dropped drastically in recent years, and the bottleneck effect has altered genetic frequencies. What mechanism of evolution causes this change? A. Natural selection B. Sexual selection C. Genetic drift D. Mutation

[Terjawab] You wish to replicate the experiment with fruit flies and alcohol. You expose some flies to alcohol and they all die. Which reason explains why your experiment was not successful? A. You exposed the flies to alcohol too rapidly for them to adapt to the change. B. The flies were already resistant to alcohol, so no change was observed. C. You started with such a small population of flies that none of the flies had the tolerance allele. D. You did not use enough alcohol.

[Terjawab] Activity 3: A Tale of Two Systems: Humans vs Plants. Write your answer in the blank. How are the organ systems of humans and plants similar in terms of processes? How are they different?

[Terjawab] Imagine you are a pigeon and answer these questions: 1. What will be the color of your feathers? 2. Will you be herbivore or carnivore?

[Terjawab] 1. Which of the following is not a product of photosynthesis? A. Sugar B. Water C. Oxygen D. Carbon dioxide 2. The life process that provides energy to organisms is? A. Use of the Sun B. Photosynthesis C. Respiration in living cells D. Intake of nutrients 3. Water in the xylem is moved with which force? A. Pressure B. Pulling by roots C. Pushing D. Capillary 4. Which of the following is the second source? A. Storing food B. Releasing energy C. Absorbing nutrients D. New cells formation 5. Which of the following process is sensitive to the right amount of sunlight? A. Storing food B. Releasing energy C. Absorbing nutrients D. New cells formation