science exam review

in which part of the scientific method does one make a prediction about an experiment outcome?

• Hypothesis

• Conclusion

• data

• observation

what is true regaurding the independent and dependent variables

• the independent variable is being measured why the dependent is kept the same

• the independent variable is being measured while the dependent is being tested/changed

• the independent variable is being tested/changed while the dependent is being measured

• the independent variable is kept the same and the dependent is being measured

what is the importance of the sceintific method

• all the above

• It is a universal way of doing a experiment

• it is organized

• it allows others to retest any hypothesis

what factor would cause a organisms population to experience population growth

• unlimited space

• lots of predation

• abundent food

• more than one answer is right

The measure factor in a scientific experiment is known as the...

• constant variable
• independent variable
• control variable
• dependent variable

when investigating the question "does dissolved aspirins in the water help fresh cut roses last long? what would be the correct dependent variable?

• The color of the roses.
• amount of roses

• length of roses

• time roses are fresh

in active transport, what is true?

• movement is from high to low

• movement is passive,no energy is required

• movement is low to high

• movement occurs through the phospholipid bilayer

what best decribes the term concentration gradient

• causes diffusion only from outside to inside the cell

• diffrences in volume on each side of the membrane

• some solute concentration on both sides of the plasma membrane

• Diffrences in concentration on each side of the plasma membrane

The various enzymes in our bodies are which type of macromolecule?

• Proteins
• Nucleic acids
• Lipids
• Carbohydrates

what part of the enzyme molecule that reacts/binds with the substrate is the

• active site
• substrate pocket
• catalytic center
• binding site