3. Which is the key difference between archaea and bacteria? a) Archaea are prokaryotic while bacteria are eukaryotic.

b) Archaea can live in anaerobic conditions while bacteria can only live in aerobic
conditions.

c) Archaea can only live in less extreme conditions while bacteria can live in more
extreme conditions.

d) Archaea do not use photosynthesis as a source of metabolic energy, while some
bacteria can use photosynthesis as a source of metabolic energy.

e) Archaea have membrane-bound organelles while bacteria do not have membrane-bound organelles.

If you answer this i"ll give you brainiest and all these points me if you do i love you 7. a doctor is at work taking care of sick patients. she spends a few minutes trying to figure out why a particular patient is sick. she taps the patient's knee to test his reflexes. while she is examining him, the patient coughs on her. a) describe the function of the skeletomuscular system in this situation. (3 points) b) describe the function of the circulatory and respiratory systems in this situation. (3 points) c) describe the function of the immune system in this situation. (3 points) d) describe the function of the nervous system in this situation. (3 points) e) describe one way that any two of the doctor's body systems worked together in this situation. (3 points)

Enzymes are proteins that speed up reactions by providing an additional energy source supplying additional molecules for the reaction removing inhibitors that slow down reactions lowering the amount of energy required

Areal dna molecule consists of thousands of these pairs of nucleotides. what is the pairing arrangement of the nitrogen bases