Answer: c. iris – controls the pupil
Explanation:
The iris, a structure which is primarily made up of smooth muscles. These smooth muscles surrounds the pupil. The light enters the eye through pupil which is a black hole present in the middle of the eye. It allows the light to strike the retina. It controls the size of the pupil this way it helps in regulating the amount of light entering the eye. The pupil becomes wider in the darkness and becomes narrower when the light intensity is more. These actions are controlled by iris.
Answer:
1st answer: golgi apparatus
2nd answer: true
3rd answer: synthesis rna
4th answer: to bind cells together into a functional organ
5th answer: plasma memberane-outermost barrier of a plant cell
6th answer: acts as the control center of the cell.
Hope this helps!!
The following options are attached to the question given above:
A) A eukaryotic cell that can make its own food
B) A prokaryotic cell that can make its own food
C) An aerobic bacterium
D) An anaerobic bacterium
ANSWER
The correct option is A.
Endosymbiotic theory is a theory that talks about the evolution of eukaryotic cells from prokaryotic organisms. The theory proposes that mitochondria and plastids {chloroplast}, which are found in eukaryotic cells were once prokaryotic cells. Based on this theory, an endosymbiosis of a cell with a cynaobacterium would result in a eukaryotic cell that can manufacture its own food because it contains plastids.
