the brain and heart are composed of 73% water, and the lungs are about 83% water.
The bacteria transform nitrogen into useful forms for the plants; the plants provide carbohydrates.
I believe the answer is C
Answer:
b. enables cell to recognize and respond to external environment
Explanation:
There are two types of receptor present in/on the cell. The receptors that are present on the cell surface are called the cell surface receptor and the receptor which is present inside the cell is called an intracellular receptor.
The cell surface receptor is responsible for enabling the cell to recognize and respond to the external environment. The signal molecules that bind to the cell surface receptors are mostly hydrophilic and they generate an intracellular cascade in the cell which brings specific changes in the cell. So the right answer is b.
Answer:
A. ability to make food and ability to swim
Explanation:
Living organisms have been grouped into an hierarchical system of classification that begins with the kingdom, which is the most inclusive taxon. Organisms were placed into kingdoms based on two major criteria namely; their nutrition and mobility.
Their nutrition depends on their ability to make food by themselves (autotrophic) or not (heterotrophic) while their mobility depends on their possession of structures for locomotion.
