Exam 1 Review Questions 1. Which property of life is illustrated by a. The Venus flytrap’s ability to close its trap rapidly after detecting the presence of an insect.(sensitivity) b. A puffin eating fish and using the energy for swimming. (adaptation) c. The formation of tissue from cells and organs from tissues.(regulation) d. The evolution of camouflage coloration in the katydid.(order) e. Thermoregulation in a polar bear. (homestasis)

2. Biologists study life at many different levels. Which level of life is illustrated by f. All the organisms living in Roosevelt Lake (community) g. All the Largemouth Bass living in Roosevelt Lake (population) h. Roosevelt Lake(biosphere) i. One Largemouth Bass(organism)

3. An important aspect of any biological study is to communicate ideas clearly. Identify the following statements as observations (O), hypotheses (H), or predictions (P). j. ___h__ Tropical rain forests have high species diversity k. ___o__ Mesquite trees have thick, dry bark to prevent water loss in the desert. l. ___p___Large-billed parrots will eat large seeds and small-billed parrots will eat small seeds. m. ___h___ Social insects will help their relatives raise offspring rather than produce their own because they actually achieve higher indirect fitness by helping. n. __o____ Many species of birds inhabit a single tree.

4. In an experiment examining vitamin C as a cold treatment, students with cold symptoms who visited the campus medical center either received vitamin C or were treated with over-the-counter drugs. Students then reported on the length and severity of their colds. If you were the researcher that designed this experiment, what could you do to minimize bias in this experimental design? What are the independent and dependent variables in this experiment? What is the control?
Independent-Vitamin c
Dependent-Counter Drugs
Constant-

5. You are looking at a mystery cell under a microscope and notice that it contains organelles and a plasma membrane but no cell wall. Is this cell prokaryotic or eukaryotic? Is this cell plant or animal? Eukaryotic cells. Plant

6. How do the cells produced by mitosis differ from those produced by meiosis in terms of the number of chromosomes they have and what they are used for? 1. Mitosis is a single nuclear division that results in two nuclei, usually partitioned into two new cells. * one in the case of haploid cells, and two in the case of diploid cells. 2. Meiosis is two nuclear divisions that result in four nuclei, usually partitioned into four new cells. * one chromosome set only—this is half the number of the original cell, which was diploid. 7. Under what circumstances would asexual reproduction be more advantageous than sexual reproduction? Under what circumstances would sexual reproduction be more advantageous?
Asexual- Do not require other organism. And all have reproductive characteristics. Child same as parent.
Sexual- more gentic variation, children different then parents

8. Why are there no super predators that specialize in eating lions in the wild?

A lion is at the top of the chain. There is no predator above it in the wild.

9. In terms of economics and energetics, is it better to be a vegetarian or omnivorous? Why?
Vegetarian: because its more efficient in energy transfer, more plants than herbivores, every transfer you get 10% of what the plants get rather than the 5% of eating meat

10. A new plant species has a unique photosynthetic pigment. The leaves of this plant appear to be reddish yellow. What colors of visible light are not being absorbed by this pigment?
Violet, blue, green, orange

11. Scuba divers have learned that below 20 feet under the ocean’s surface, if they have a nosebleed or cut themselves, they bleed bright green blood. As they near the surface, however, the blood turns red. What hypothesis best explains this bizarre color change?

The lower you go into the ocean the less oxygen the body receives so the persons blood bleeds green.

12. Plants perform one of the most biologically useful energy transformations on Earth. What do plants do that is so important?

Photosynthesis

13. How do desert plants balance the need for CO2 with the need to avoid water loss in hot temperatures?
Close its stomata.

14. How does the burning of fossil fuels affect the carbon cycle? How does deforestation affect the carbon cycle?
When humans burn fossil fuels, the stored carbon is released into the atmosphere as carbon dioxide. The carbon is then free to cycle through the Earth and can upset the natural balance of the carbon available, changing the way that processes occur on Earth.