Answer:
Tanning of DNA using UV light at different time (1 minutes, 15 minutes, and 30 minutes)
Explanation:
Independent variable is the variable that was controlled or change and in this case it is the tanning of DNA with UV light at different times and the dependent variable is what is measured or the effect of the change in the independent variable which is DNA damage and the control was the cells that did not receive the treatment.
Answer:
a stack containing multiple flattened, disk-shaped membranes called cisterns
Explanation:
Answer:
Two and a half billion years ago, single-celled organisms called cyanobacteria harnessed sunlight to split water molecules, producing energy to power their cells and releasing oxygen into an atmosphere that had previously had none.
Explanation:
ANSWER: Different cells have<span> different jobs to </span>do<span>. Each </span>cell has<span> a size and shape that is suited to its job. </span>Cells<span> that </span>do<span> the same job combine together to form body tissue, such as muscle, skin, or bone tissue. Groups of different </span>types of cells<span> make up the organs in your bodies, such as your heart, liver, or lungs.</span>
The process by which forms of life having traits that betterenable them to adapt to specificenvironmental pressures, as predators, changes in climate, or competition for food or mates,will tend to survive andreproduce in greater numbersthan others of their kind, thusensuring the perpetuation of those favorable traits in succeeding generations.