Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.

By signing up, I agree to StudyStack's Terms of Service and Privacy Policy.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.

Remove ads
Don't know
remaining cards
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards

Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Year 10 Revision

Exam 1

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
white dwarf the core remaining after a red giant star has exploded.
black dwarf a cooled down white dwarf that no longer emits light.
antigravity a 'force' opposite to gravity, which causes objects to push each other apart and the universe to expand.
supernova a huge explosion that happens when a red giant star has used up all its fuel.
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.
gene a length of DNA containing instructions for making a protein.
allele different forms of a gene.
karyotype a picture created by staining, arranging and numbering chromosomes in pairs by size.
diploid when cells of a species contain pairs of chromosomes.
haploid when cells of a species have one copy of each chromosome.
co-dominance two different alleles are both expressed (shown) in the phenotype.
partial dominance a mixture of the two different alleles are expressed (shown) in the phenotype..usually meeting halfway.
chromosome a structure formed of a very long piece of DNA.
adaptation structural or behavioural characteristics of a species which help its survival in its environment.
natural selection process by which the best adapted individuals of a species survive and reproduce more successfully than those less adapted.
mutation an error in the DNA code.
variation differences between individuals of a species.
evolution change in the inherited characteristics of a group of organisms.
competition the fight between the individuals for a share of limited resources such as food, mates & shelter.
speciation the formation of a new species.
selective agent any factor in the environment which affects the survival of an organism..eg. diseases, predators.
Created by: 1081878501