Osmosis and diffusion both belong to which of the following categories?

Why do photosynthesizers contain accessory pigments in addition to chlorophyll a?

Embryonic stem cells are cells derived from an embryo. These cells can be used to create new tissues for patients suffering from certain illnesses and disorders.

Which of the following is an example of a long term change to ecosystems

Complete the following analogy: eukaryotic: mitosis: prokaryote:

You eat a bowl of beans as part of your dinner. As you digest the beans, the proteins that are present get broken down to their component amino acids.

Select all the correct answers. Based on the body structures of these animals, which two conclusions are scientifically sound? The skeletal structure of the gorilla and chimpanzee suggest a common evolutionary ancestry.

What energy always moves from warmer objects to colder objects?

Explain why the Nile floodplain and its annual did cycle provided an ideal situation for building an agricultural civilization

Which part of the stem tissue is "wood" made from?

gravity is a force between any two objects with mass. Why doesn't a person feel a gravitational force between him/herself and another person