When the ventricles contract, the bicuspid (mitral) valve prevents blood from flowing from the: * ?

What organelle is involved in cellular respiration

What happens in the alimentary canal? A) white blood cells grow B) starch is broken down by enzymes C) carbon dioxide is released by hemoglobin D) actin and myosin are produced

Biodiverity depends on

Where are digestive enzymes made?

What is a benefit of eating meat and beans

Describe the process of desertification

During transcription in eukaryotes, a type of RNA polymerase called RNA polymerase II moves along the template strand of the DNA in the 3'→5' direction.

A plant species live in an area with limited sunlight

Which statement is true of the nucleus of a cell

Until about 200 million years ago, Earth's continents were joined as a single land mass called A. Asia Minor. B. Pangaea. C. Glossopteris. D. Cynognathus.