12. Which of the following statements is true regarding biological cell theory? a. All organisms are made of cells c. All cells come from mitosis b. All cells possess a nucleus d. All cells come from meiosis

Which of the following happens at mid-ocean ridges and is essential for the process of plate tectonics being able to continue? A). Old rock is melted into magma. B). New rock is formed from magma. C). Seamounts are shaped. D). Trenches are destroyed.

May I know how do the following factors affect enzyme regulation?: 1) Product concentration 2) Tissue and cellular location

Jaw probably evolved from

Before a big soccer game Charlie always eats a big dinner. Which characteristic of life does this fact best describe? a Living things reproduce b Living things grow and develop c Living things use energy d Living things respond to their environment

A biologist formulates a hypothesis, performs experiments to test his hypothesis, makes careful observations, and keeps accurate records of his findings.

What kind of bond is formed when 2 atoms form an electron?

What's a specific cellular process that would be affected by a glucose shortage

How can the level of pain you feel vary if a stimulus causes an all or none response?

How long does gunpowder residue remain on a shooter's hands? A few hours About 24 hours A few days About a week

Why are some planets made of frozen gases and others solid?