Riley is 3 years older than his sister. The sum of their ages if s represents Riley's sister's age is shown as

A. 3s

B. b s + 3

C. 2 (s + 3)

D. 2s + 3

What enables you to bend and twist in science what bone or joint

You have isolated a strain of temperature-sensitive mutant yeast that divides normally at 25°C. However, at 37°C, the mutant pauses in the cell cycle right before M phase. These mutant yeast cells are NOT defective in M - Cdk.

Can you look up an organism is multicellular but has no cell walls gets nutrients by eating other organisms in reproduces sexually and which kingdom does this organism belong

1. List five most important things you think are necessary to survive for a living organism.

The important organ of the high level of plants

4. A tree dropping its leaves in the fall to conserve water and avoid freezing during winter is an example of?

Which is a single-celled fungus? A. mold B. mushroom C. alga D. yeast

Explain problems with using low-tar, low-nicotine cigarettes.

Some students are comparing the parts of a cell to the parts of the body. Which part best represents the cell membrane and why?

What is the difference between the nitrogen and carbon cycles?