Biology, the Study of Life Quiz quiz 1

25 Jun Biology, the Study of Life Quiz quiz 1

Question
Biology, the Study of Life Quiz 97.30/100

1. Complete the following statements about the theory of homeostasis. Not all choices with be used

A state of biological balance, or homeostasis, is important for the survival of both cells and organisms.

Regulation of the internal environment of cells and organisms is carried out through feedback and other control mechanisms.

Physiological factors such as temperature, water levels, and pH must remain with a certain range for cells and organisms to remain healthy and functional.

2. Which of the following levels of taxonomy includes the greatest number of organisms?

a. Order

b. Family

c. Phylum

d. Species

e. Class

3. A possible explanation for a natural event is known as

a. A test

b. A hypothesis

c. An observation

d. A conclusion

e. Data

4. Label the evolutionary tree to show the relationship between dinosaurs and modern reptiles.

5. When an organism’s DNA is permanently altered, we say that it

a. reproduces

b. sequences

c. varies

d. metabolizes

e. mutates

6. Which part of an experiment allows a scientist to know if the treatment worked or not?

a. Testing

b. Control group

c. Observation

d. Hypothesis

e. Conclusion

7. The major driving force behind evolution is

a. Organization

b. Natural selection

c. Homeostasis

d. Photosynthesis

e. Metabolism

8. Directly or indirectly, all organisms ultimately get their energy from

a. Inorganic matter

b. Organic matter

c. The sun

d. Nutrient cycling

e. Water

9. Tortoises which eat mostly shrubs have notches in their shell that allow their necks to extend upward, while tortoises which eat ground-level vegetation have no notches. The notch is an example of

a. An acquired characteristic

b. An adaptation

c. An experimental variable

d. A selective agent

e. A species

10. Which answer choice is not a defining characteristic of life?

a. Responsiveness to stimuli

b. Homeostasis

c. Use of materials and energy

d. Reproduction

e. Disorder

11. Which theory helps us understand why various species differ from one another, tells us to what diseases we are predisposed, and enables us to produce drugs for a variety of diseases?

a. Ecosystem

b. Gene

c. Cell

d. Evolution

e. Homeostasis

12. Complete the following statements about the cell theory and levels of biological organization. Not all choices will be used.

13. A scientist who studies a group of field mice all living in the same area would be studying

a. An ecosystem

b. A community

c. A population

d. A biosphere

e. A species

14. Place the following steps in the correct order of the scientific method.

15. Humans belong to which kingdom?

a. Animals

b. Protists

c. Plants

d. Fungi

e. Archaea

16. What would occur if all the decomposers were removed from an ecosystem?

a. Nutrient recycling from dead organisms would increase.

b. Nutrients from dead organisms could not be recycled into the ecosystem.

c. Energy would not longer be lost in the form of heat.

d. There would be no effect on the ecosystem; decomposers are not essential for ecosystem function.

e. The ecosystem would lose its ultimate source of energy.

17. Members of the same species found within a particular area are referred to as

a. An ecosystem

b. An organism

c. A biosphere

d. A community

e. A population

18. Classify the following components of ecosystems as either biotic or abiotic features.

19. The unity and diversity of living organisms on our planet can best be explained by which of the following processes?

a. evolution

b. metabolism

c. reproduction

d. homeostasis

e. taxonomy

20. In the scientific method, the condition which is deliberately changed is referred to as the

a. hypothesis

b. test

c. control variable

d. control group

e. experimental variable