Which discovery explains why all organisms share the same genetic code

Instructions:Select the correct answer. What are the macromolecules DNA and RNA referred to as? Proteins Carbohydrates Nucleic acids

You are an aquatic biologist studying a small lake. The stream that drains into this lake runs by croplands.

How do littoral zones differ from riparian zones?

What statement does NOT pertain to the cephalic phase of gastric secretion? (It controls the rate at which chyme enters the small intestine., It is triggered by sensory input, such as sight, as well as mental input, such as thinking about food.

How might stem cell research change the future of organ transplantation? A. Stem cells could be designed to duplicate the patient's immune system, making immunosuppressant drugs unnecessary. B.

Which of these is an example of land degradation? A. Containers designed to store pollutants leak. B. Fertilizers provide too many nutrients to crops. C. Garbage is buried so the land can be reclaimed later. D.

Why is seattle warmer in the winter than yellowstone answers?

A pregnant client who is nearing her due date informs the nurse that she would like a vaginal delivery. the nurse observes in the medical records that the presenting part is the sacrum. what does the nurse tell the client?

Each neuron shown in this figure innervates a group of muscle fibers. What is the term for a group of muscle fibers and the single neuron that innervates them?

Which of these characteristics is common only at the embryonic stage of fish and humans, and is suggestive of a common ancestor between the two? A) presence of lungs B) presence of a tail C) presence of gill slits D) presence of a vertebral column