One difference between plant and animal cells is that plant cells contain chloroplasts. were any chloroplasts visible in the onion cells? why or why not?

The hypothesis that all species are descended from common ancestors was proposed by

Considering the chemical reaction for cellular respiration, what must be included in the respirometer containing the germinating seeds? A) oxygen B) boiled water C) oxygen and water D) warm water and light

Which is a larger change in temperature: a change of 1 Celsius degree or 1 Fahrenheit degree? Explain.

Using the structural classification, what type of joint is a suture

What are two major events that happened in the Mesozic Era

Why does dna need to coppy before the cell divides

As líquid water freezes, the molecules take up more space than aqua water What do you think would happen if frozen water molecules required less space than liquid water molecules?

Which of the following mineral types can you use radiometric dating on? Homogeneous Inorganic Radioactive Ore

Which type of bond holds a water molecule together

Make a claim that answers the scientific question