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23 Cards in this Set
- Front
- Back
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How are fossils formed from gradual replacement by minerals? (In three steps) |
- things like teeth and shells which don’t decay easily can last a long time when buried -they are eventually replaced by minerals as they decay forming the rock like substance shaped like the original hard part -The surrounding sediments also tuen to rock, but the fossil stays distinct inside the rock |
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How are fossils formed from casts and impressions? (In one step) |
- an organism is buried in a soft material like clay, the clay then hardens around it, the organism decays leaving a cast of itself |
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What is one other way fossils are formed? |
Through preservation where no decay happens |
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What are three factors that species can become extinct? |
-new predator -new disease -environment changes |
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What are 4 factors that can cause species to become extinct? |
-new predator -new disease -environment changes -a catastrophic event e.g asteroid collision or a volcanic eruption |
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What does the term extinction mean? |
The permanent loss of all the members of a species |
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Finish the sentence: Bacteria can evolve rapidly because.... |
They reproduce at a fast rate |
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Finish the sentence: Bacteria can evolve rapidly because.... |
They reproduce at a fast rate |
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Finish the sentence: Mutations of bacterial pathogens.... |
Produce new strains |
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Finish the sentence: Bacteria can evolve rapidly because.... |
They reproduce at a fast rate |
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Finish the sentence: Mutations of bacterial pathogens.... |
Produce new strains |
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How does bacteria become resistant to antibiotics? |
Some of the new strains may become resistant to antibiotics so they are not killed. They survive and reproduce, so the population of the resistant strain increases by natural selection. Causing it to spread. |
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Finish the sentence: Bacteria can evolve rapidly because.... |
They reproduce at a fast rate |
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Finish the sentence: Mutations of bacterial pathogens.... |
Produce new strains |
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How does bacteria become resistant to antibiotics? |
Some of the new strains may become resistant to antibiotics so they are not killed. They survive and reproduce, so the population of the resistant strain increases by natural selection. Causing it to spread. |
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MRSA can be treated with antibiotics True/false |
False MRSA is resistant to antibiotics |
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What is one thing we can do to reduce the rate of development of antibiotic resistant strains? |
Complete each course of antibiotics we are prescribed |
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What is classification? |
The organization of living things into groups according to their similarities |
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Who proposed the classification system? |
Linneaus |
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Who proposed the classification system? |
Linneaus |
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What are the seven things that make up the leannaean system? |
-kingdom -phylum -class -order -family -genus -spevies |
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Are the three rules when writing scientific names? |
-First name is the name of the genus to which the organism belongs to, (in capital letters). -The second name is the name of a species to which the organism belongs, (in lower case letters). .the two names should be underlined |
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What three things make up the domain system? |
-Archaea-perverted forms of bacteria that include the extremophiles. -bacteria -this domain contains true bacteria -Eukaryota-this domain includes a broad range of organisms including fungi, plants, animals and protists. |
