Heliobacillus is a genus of flagellated gram-positive Firmicutes bacteria that contain a unique photosynthetic pigment, bacteriochlorophyll g. Despite being photosynthetic, they often ferment pyruvate. They are obligate anaerobes and use nitrogenase enzymes to fix nitrogen. Select the statements that are true for bacteria in the genus Heliobacillus. They are anarobic

Which best describes red blood cells? a. they are colorless b. they protect against disease-carrying microorganisms c. they transport oxygen throughout the body d. they aid in blood clotting

Amylase is an enzyme found in the human digestive system. why do you think it was important to keep the enzyme temperature above 37 degrees celsius (98.6 degrees f)? describe what might happen if the temperature decreased by 10 degrees celsius.

Put the following steps of the convection process in the correct order. 1. gravity pulls cooler matter downward. 2. the matter expands and decreases in density. 3. an up-and-down flow of matter produces a convection current. 4. matter is heated. 5. warmed matter is forced upward. question 2 options: a) 4, 2, 5, 1, 3 b) 2, 4, 3, 1, 5 c) 3, 2, 5, 4, 1 d) 1, 4, 2, 5, 3