Answer & Explanation:
The most basic difference between RER and SER is the presence of ribosomes. When ribosomes attach to the surface of an ER, it gives a characteristic rough appearance; hence it is called Rough ER. On the other hand, a smooth ER does not have ribosomes on its surface. It possesses ribosomes attached to its membrane.
Answer:
Option (D)
Explanation:
The plants has the ability to undergo the process of photosynthesis. Photosynthesis is defined as the process by which the green plants prepare their own food in the presence of sunlight, carbon dioxide (CO₂) and water (H₂O). The leaves of the green plants contains chlorophyll pigments that consumes the above molecules and helps in converting it into water, oxygen and glucose. This is how plants make their own food and they are considered as the autotrophs or producers. The consumers are dependent on this producers.
Thus, the correct answer is option (D).
Answer:
channels and chain-like structures
Explanation:
The plasma membrane contains channels that favor the transport of materials from both sides, i.e., from the intracellular medium to the extracellular environment. Membrane channels are a class of proteins that enable the passive transport of ions and chemical compounds by using the electrochemical gradient in both sides of the membrane. For example, channel proteins in the cell membrane known as aquaporins enable the transport of water across the cell membrane much more rapidly than by diffusion across this barrier.