PLEASE HELP I’m so confused on this question, can I please get an explanation?

Question: CREB (transcription factor) would be considered what type of molecule in the signaling cascade pathway?

Blood made up of red and white blood cells work together to form

What is the function of the somatic nervous system? connects the brain and the spinal cord to the rest of the body carry signals to the muscles and glands includes all nerves controlling the muscular system and external sensory receptors controls internal organs like the heart and bladder

The tubes transporting minerals and water upward are called ?