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.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.

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.
Didn't know it?
click below
Knew it?
click below
Don't know
Remaining cards (0)
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

A-D Vocab Review

Active Transport The movement of molecules or ions against a concentration gradient (lower to higher concentration) and therefore requiring energy
Allele One of the different forms in which a gene can occur.
Autosomal Chromosome Any of the nonsex chromosomes
Carbon Fixation The process of synthesizing sugars from carbon dioxide and water (Calvin cycle of photosynthesis)
Cell Cycle The events in the life of a dividing cell consisting of G1, S, G2 and M phases.
Cell Wall A structure in plant cells that surrounds the cell membrane, important for structure and protection. Also present in algae and certain bacteria
Cellular Respiration The process in which carbon-rich sugar molecules react with oxygen to make useable energy for a cell. Occurs in heterotrophs and autotrophs
Chlorophyll One of the photosynthetic pigments found in plant chloroplasts
Chloroplast The structure in plants that contains chlorophyll and is the site of photosynthesis
Chromatin Numerous strands of DNA coiled and bunched together; the individual strands that make up chromosomes
Chromosome Any of the tubelike bodies within the nucleus containing DNA and protein. Carry the genetic code for individuals.
Codominance A situation in which both alleles express themselves in an organism that is heterozygous for a trait
Codon A three-base sequence on mRNA that tRNA uses to provide the correct amino acid
Control Group In an experiment, a group of subjects identical to the experimental subjects except that the control group is not exposed to the independent variable
Controlled Variable The factor in an experiment that remains constant while the independent variable is manipulated
Crossing Over The exchange of genetic material between homologous chromosomes during meiosis I
Cytokinesis The phase immediately following mitosis in which the cytoplasm divides to form two daughter cells.
cytoplasm A combination of inorganic and organic substances outside the nucleus
Dependent Variable The factor in an experiment that changes (or doesn't change) in response to the manipulated variable. It is sometimes called the responding variable.
cell theory The idea that all living things are made of cells and that all cells come only from existing cells
Created by: jhaase



Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!

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