Most of the food and oxygen in the environment is produced by the action of

1. Saprophytic Bacteria

2. Heterotrophic Bacteria

3. Aerobic protozoans

4. Autotrophic organisms

Damage to ependymal cells would most likely affect the:

Why are gradients important in diffusion and osmosis?

In prokaryotes, rho-independent transcription termination depends on a secondary structure formed in: a. the RNA polymerase that is transcribing the gene b. the RNA that is being transcribed. c. a protein factor that binds to RNA polymerase d.

What is the main function of carbonhydrates in the cell?

In which part of the digestive system does a chemical change of the food first occur?

8. In the S-Phase of the cell cycle; DNA is replicated. Why would eukaryotic cells need to replicate DNA before the nucleus divides? A. To trigger genetic transfer of DNA. B. To encourage rapid mutation rates in the organism. C.

The patient has been placed on a nitroprusside drip for the treatment of a hypertensive crisis. which mechanism of action does the nurse know is true for nitroprusside?

How many oxygen molecules (O₂) are required each time a molecule of glucose (C₆H₁₂O₆) is completely oxidized to carbon dioxide and water via aerobic respiration,? A) 1 B) 3 C) 6 D) 12 E) 30

Which of the following sentences are correct? (1) for millions of years dinosaurs ruled the earth; they roamed freely over the land and through the oceans.

2. A flower arranger is growing some flowers in a garden. He has seeds for red, and seeds for pink plants. Both colours are found or the same allele as each other. Red is the dominant colour, while pink is recessive.