An extra copy of chromosome 21 in humans causes

Down syndrome

cystic fibrosis

HIV

none of the above

Social impacts of stem cells

Which type of cnidarian does not have a nervous system? a. Corals c. Jellyfish b. Sponges d. Anemones

Which of the following types of passive transport involves water molecules moving from a high concentration to low concentration

In what kind of painting are pigments suspended in water applied to a damp lime-plaster surface and was traditionally seen directly painted onto walls?

Which is an example of why the process of photosynthesis is important to life on Earth? A) Grass uses photosynthesis to produce glucose, which is used within the grass for growth.

If you must exercise outdoors at night, which kind of clothing is best to wear

The quantity of water that can be held by subsurface rock or soil depends on the ___ of the material.

Which of the following does NOT create variation within a population? a. mitosis b. genetic shuffling c. sexual reproduction (meiosis) d. mutations

Plants in the phylum coniferophyta are

What passes through a cell using passive transport?