True: a larval amphibian; specifically : a frog or toad larva that has a rounded body with a long tail bordered by fins and external gills soon replaced by internal gills and that undergoes a metamorphosis to the adult.
Answer: The structure is chloroplast.
Explanation: Photoautotrophs are organisms that can synthesize food using light energy and carbon dioxide via photosynthesis.
Photoautotroph is a combination of two words: photo which means light and autotroph which means an organism that can manufacture its own food.
A photoautotroph manufactures its own food in a process known as photosynthesis. Photosynthesis is a process by which plants manufacture organic foods such as glucose using light energy, carbon dioxide and water. This process takes place in the chloroplast. A chloroplast is an organelle found in plant cells that contains chlorophyll which is the pigment that absorbs the light used in photosynthesis.
When the neuron is at rest, what is primarily responsible for moving potassium ions OUT of the cell?
a concentration gradient
an electrical gradient
both a concentration gradient and an electrical gradient
the sodium-potassium pump
Answer:
a concentration gradient
Explanation:
At rest, the sodium-potassium pumps pump the two potassium ions into the cell for three Na ions moved out of the cell. This creates a higher potassium concentration gradient inside the cell. This concentration gradient moves the K+ out of the cell. Movement of positively charged K+ out of the cells make the inside of the membrane negative with respect to the outside. This is how the negative resting potential is maintained when neurons are nor firing the action potential.
The definition to this question is trophic level refers to a level or a position in a food chain or ecological pyramid. It is occupied by a group of organisms that have a similar feeding mode. You can just look it up I here is some help go to this website www.biology-online.org/dictionary/Trophic_level it will tell you all about it
