science ch 17 test
Terms
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copy deck
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Which is an example of a harmful mutation?
1) a cat's extra toe
2) a yellow flower
3) a hole in a baby's heart - 3) a hole in a baby's heart
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Predators are often selecting agents.
True False - TRUE
- When more than several organisms in a population need or want the same "things" from the habitat, they ___ for it.
- COMPETE
- These are evidence of past life.
- FOSSILS
- This is the scientist that wrote the theory of natural selection.
- DARWIN
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According to Darwin, overtime the offspring of survivors will make up a larger proportion of a population.
True False - True
- In the early stages of all vertebrates, two structures are always seen. What are they?
- TAIL GILLS OR GILL SLITS
- When body parts of different organisms are similar in structure and origin we say that they are...
- HOMOLOGOUS
- This is the basic molecule of life and is found in all living organisms.
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deoxyribonucleic acid
DNA - The structure or ability of an organism to remain hidden or unseen in its habitat is called....
- CAMOUFLAGE
- How do insecticide-resistant genes appear in insects?
- SELECTION
- The difference in appearance between members of the same species is called....
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VARIATION -
A farmer's planting seeds from his best plants is an example of ....selection.
1) natural
2) artificial - ARTIFICIAL
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The more ways that the DNA codes of different species are alike, the more closely they are related.
True False - TRUE
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Which is a good example of a predator/prey relation?
1)bear/blackberry bush
2)rabbit/squirrel
3)coyote/mouse - COYOTE/MOUSE
- The basic building blocks that make up protein are
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AMINO ACIDS - What do scientists use the fossil record for?
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1) to study the species that are extinct
2) to gather evidence about climate, food, and environment
- The changing of the inherited traits of a population over time is called....
- EVOLUTION
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According to Darwin's theory of natural selection, organisms reproduce more offspring than can survive
True False - True
- Scientists study ____ of different organisms to see how similar structures have developed
- EMBRYOS
- What do we call an area that provides shelter, food, and water to organisms
- HABITAT
- What does survival of the fittest mean?
- ORGANISMS THAT ARE BEST ADAPTED TO THE ENVIRONMENT SURVIVE
- When two different organisms develop structures and bahaviors in response to each other it is called....
- COEVOLUTION
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Which of the following is NOT a protein?
-enzymes
-cholesterol
-insulin - CHOLESTEROL
- What do you call an organism that kills and eats its own food
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PREDATOR -
The sequence of nitrogen bases are very similar in chimps, gorillas, and humans.
True or False - True
- Anything that removes members of a population from the habitat is called a
- SELECTING AGENT
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A mutation of an organism can cause...
-only a bad effect
-only a good effect
-a change in a trait or behavior - A CHANGE IN A TRAIT OR BEHAVIOR
- This molecule contains the instructions for making all living things
- DNA