Exam 1
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| red giant | A red giant is a luminous giant star of low or intermediate mass (roughly 0.5–10
solar masses) in a late phase of stellar evolution
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| white dwarf | the core remaining after a red giant star has exploded.
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| black dwarf | a cooled down white dwarf that no longer emits light.
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| antigravity | a 'force' opposite to gravity, which causes objects to push each other apart and the universe to expand.
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| supernova | a huge explosion that happens when a red giant star has used up all its fuel.
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| doppler effect | the effect observed when a source of waves, whether water waves, sound waves or light waves, moves towards or away from an observer.
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| gene | a length of DNA containing instructions for making a protein.
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| allele | different forms of a gene.
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| karyotype | a picture created by staining, arranging and numbering chromosomes in pairs by size.
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| diploid | when cells of a species contain pairs of chromosomes.
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| haploid | when cells of a species have one copy of each chromosome.
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| co-dominance | two different alleles are both expressed (shown) in the phenotype.
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| partial dominance | a mixture of the two different alleles are expressed (shown) in the phenotype..usually meeting halfway.
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| chromosome | a structure formed of a very long piece of DNA.
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| adaptation | structural or behavioural characteristics of a species which help its survival in its environment.
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| natural selection | process by which the best adapted individuals of a species survive and reproduce more successfully than those less adapted.
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| mutation | an error in the DNA code.
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| variation | differences between individuals of a species.
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| evolution | change in the inherited characteristics of a group of organisms.
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| competition | the fight between the individuals for a share of limited resources such as food, mates & shelter.
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| speciation | the formation of a new species.
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| selective agent | any factor in the environment which affects the survival of an organism..eg. diseases, predators.
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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