The top left would be AA. The top right would be Aa. With the bottom right blank being aa. The letters are the genotype.
Euglena can be classified as both eukaryotic and single celled organisms, more specifically it is a protist.
<span> An action potential is when a neuron sends information down an axon and keeps it away from the cell body.</span>
B. Only the plant cell wall is impermeable.
Protein synthesis is undergone in the nucleus and endoplasmic reticulum.
Nucleus is where genetic materials (DNA) are stored and organised.
Only plant cell wall is made up of cellulose. It helps plant cells stay rigid.
Plant cells have both cell wall and cell membrane.
The Biosphere only contains life on earth's lithosphere