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Sabtu, September 17, 2011
Selasa, Desember 07, 2010
Biology Molecles
Chapter 1
1. All organisms have which of the following in common?
a. They exhibit complex organization.
b. They store genetic information in DNA molecules.
c. They utilize energy.
d. They reproduce.
e. all of the above
2. Biologists think that ___ of the species that exist on Earth live in forest treetops.
a. few
b. 10-20%
c. half
d. three-fourths
e. nearly all
3. Biologists group living things into ___ domains.
a. two
b. three
c. four
d. five
e. about ten
4. A bacterium and an amoeba are placed in different domains because
a. a bacterium is single-celled.
b. an amoeba is photosynthetic.
c. an amoeba can move.
d. a bacterial cell is much simpler.
e. an amoeba is single-celled.
5. Most of the organisms in Kingdom ____ are photosynthetic.
a. Animalia
b. Protista
c. Plantae
d. Fungi
e. none of the above
6. At the most fundamental level in life's hierarchy, all living things contain the same basic kinds of
a. cells.
b. organs.
c. molecules.
d. tissues.
e. organ systems.
7. An educated guess posed as a tentative explanation is called a
a. theory.
b. control.
c. variable.
d. prediction.
e. hypothesis.
8. The information in ____ underlies all of the properties that distinguish life from nonlife.
a. carbon
b. DNA
c. proteins
d. population.
e. chemical nutrients
9. The ____ is the highest level in life's structural hierarchy.
a. ecosystem
b. cell
c. organism
d. population
e. molecule
10. There are many interdependencies in an ecosystem. Prokaryotes and fungi play an important role in the ecosystem primarily because they
a. cause diseases that keep populations in check.
b. trap water, which is then used by other organisms.
c. decompose the remains of dead organisms.
d. are responsible for producing energy.
e. do photosynthesis, which makes the food for other species.
11. A crop scientist noted that, over a period of 10 years, a beetle species that feeds on rice gradually became resistant to insecticide. Which of the following best explains this in terms of natural selection?
a. The insecticide mutated the beetles exposed to the biggest doses.
b. Some beetles learned to tolerate the insecticide and passed this ability to their offspring.
c. Beetles learned to avoid the spray and passed the knowledge to their offspring.
d. The insecticide caused the beetles to reproduce more quickly than normal.
e. Those beetles with natural resistance to the insecticide had the most offspring.
12. Researchers testing new drugs usually give the drug to one group of people and give placebos, sugar pills, to another group. The group receiving the sugar pills
a. constitutes the experimental group.
b. is needed so that the test will be repeated enough times.
c. is the control group.
d. is a backup in case some of the people getting the drug drop out of the test.
e. is the experimental variable.
13. ____ has characteristics that result from the organization of its component ____.
a. A population . . . ecosystems
b. A tissue . . . organs
c. A cell . . . tissues
d. An organism . . . organ systems
e. A molecule . . . cells
14. An ecologist studied the effect of nutrients and predators on the population growth of bacteria on the bottom of a pond. His study of bacteria could not involve which of the following levels in life's structural hierarchy?
a. ecosystem
b. organ
c. organism
d. population
e. chemical
15. A rainforest primate called an aye-aye has a long middle finger that it uses to probe for insects in cracks and crevices in tree bark. This connection between structure and function developed gradually as a result of
a. reproduction.
b. population growth.
c. natural selection.
d. DNA replication.
e. energy exchange.
16. Which of the following does not illustrate technology?
a. DNA research is used to cure an inherited disease.
b. Scientists develop a bacterium that destroys toxic wastes.
c. A biologist identifies a new species of monkey.
d. A chemical that slows cell division is used to treat cancer.
e. Biologists breed a disease-resistant kind of corn.
17. Deductive reasoning is used to
a. develop a hypothesis.
b. make a prediction.
c. test a prediction.
d. make a general statement.
e. prove the validity of a hypothesis.
18. Domain Archaea contains
a. unicellular eukaryotic cells.
b. unicellular prokaryotes.
c. multicellular eukaryotes.
d. the algae.
e. the bacteria.
19. The key feature of Darwin's view of evolution is
a. natural selection.
b. the inheritance of acquired characteristics.
c. that species are created by a deity.
d. that organisms are adapted to their environment.
e. genetic drift.
20. In most ecosystems, the ultimate source of energy is
a. photosynthesis.
b. sunlight.
c. decomposition.
d. thermal vents.
e. glycolysis.
1. All organisms have which of the following in common?
a. They exhibit complex organization.
b. They store genetic information in DNA molecules.
c. They utilize energy.
d. They reproduce.
e. all of the above
2. Biologists think that ___ of the species that exist on Earth live in forest treetops.
a. few
b. 10-20%
c. half
d. three-fourths
e. nearly all
3. Biologists group living things into ___ domains.
a. two
b. three
c. four
d. five
e. about ten
4. A bacterium and an amoeba are placed in different domains because
a. a bacterium is single-celled.
b. an amoeba is photosynthetic.
c. an amoeba can move.
d. a bacterial cell is much simpler.
e. an amoeba is single-celled.
5. Most of the organisms in Kingdom ____ are photosynthetic.
a. Animalia
b. Protista
c. Plantae
d. Fungi
e. none of the above
6. At the most fundamental level in life's hierarchy, all living things contain the same basic kinds of
a. cells.
b. organs.
c. molecules.
d. tissues.
e. organ systems.
7. An educated guess posed as a tentative explanation is called a
a. theory.
b. control.
c. variable.
d. prediction.
e. hypothesis.
8. The information in ____ underlies all of the properties that distinguish life from nonlife.
a. carbon
b. DNA
c. proteins
d. population.
e. chemical nutrients
9. The ____ is the highest level in life's structural hierarchy.
a. ecosystem
b. cell
c. organism
d. population
e. molecule
10. There are many interdependencies in an ecosystem. Prokaryotes and fungi play an important role in the ecosystem primarily because they
a. cause diseases that keep populations in check.
b. trap water, which is then used by other organisms.
c. decompose the remains of dead organisms.
d. are responsible for producing energy.
e. do photosynthesis, which makes the food for other species.
11. A crop scientist noted that, over a period of 10 years, a beetle species that feeds on rice gradually became resistant to insecticide. Which of the following best explains this in terms of natural selection?
a. The insecticide mutated the beetles exposed to the biggest doses.
b. Some beetles learned to tolerate the insecticide and passed this ability to their offspring.
c. Beetles learned to avoid the spray and passed the knowledge to their offspring.
d. The insecticide caused the beetles to reproduce more quickly than normal.
e. Those beetles with natural resistance to the insecticide had the most offspring.
12. Researchers testing new drugs usually give the drug to one group of people and give placebos, sugar pills, to another group. The group receiving the sugar pills
a. constitutes the experimental group.
b. is needed so that the test will be repeated enough times.
c. is the control group.
d. is a backup in case some of the people getting the drug drop out of the test.
e. is the experimental variable.
13. ____ has characteristics that result from the organization of its component ____.
a. A population . . . ecosystems
b. A tissue . . . organs
c. A cell . . . tissues
d. An organism . . . organ systems
e. A molecule . . . cells
14. An ecologist studied the effect of nutrients and predators on the population growth of bacteria on the bottom of a pond. His study of bacteria could not involve which of the following levels in life's structural hierarchy?
a. ecosystem
b. organ
c. organism
d. population
e. chemical
15. A rainforest primate called an aye-aye has a long middle finger that it uses to probe for insects in cracks and crevices in tree bark. This connection between structure and function developed gradually as a result of
a. reproduction.
b. population growth.
c. natural selection.
d. DNA replication.
e. energy exchange.
16. Which of the following does not illustrate technology?
a. DNA research is used to cure an inherited disease.
b. Scientists develop a bacterium that destroys toxic wastes.
c. A biologist identifies a new species of monkey.
d. A chemical that slows cell division is used to treat cancer.
e. Biologists breed a disease-resistant kind of corn.
17. Deductive reasoning is used to
a. develop a hypothesis.
b. make a prediction.
c. test a prediction.
d. make a general statement.
e. prove the validity of a hypothesis.
18. Domain Archaea contains
a. unicellular eukaryotic cells.
b. unicellular prokaryotes.
c. multicellular eukaryotes.
d. the algae.
e. the bacteria.
19. The key feature of Darwin's view of evolution is
a. natural selection.
b. the inheritance of acquired characteristics.
c. that species are created by a deity.
d. that organisms are adapted to their environment.
e. genetic drift.
20. In most ecosystems, the ultimate source of energy is
a. photosynthesis.
b. sunlight.
c. decomposition.
d. thermal vents.
e. glycolysis.
Sabtu, Oktober 30, 2010
Jumat, Oktober 29, 2010
Announcement
For XI Science 1 and 2
We are going to studi in Unida ( Biology and Chemistry) on Friday, 5 November 2010
08.00 am to 15.00 pm.
For XI Science 3 and 4 on Friday, 12 November 2010.
And for X 1 and 2
We are going to visit Balitro on Saturday 20 November 2010.
We are going to studi in Unida ( Biology and Chemistry) on Friday, 5 November 2010
08.00 am to 15.00 pm.
For XI Science 3 and 4 on Friday, 12 November 2010.
And for X 1 and 2
We are going to visit Balitro on Saturday 20 November 2010.
