The cell membrane is a lipid bilayer made of amphipathic phospholipids, which is fluid and selectively permeable to ions and organic molecules, given that the inside of the cell membrane is hydrophobic and the outside is hydrophilic.
The physical characteristics of the cell membrane, along with the proteins and other biomolecules embedded in it, control what enters and leaves the cell.
What the cell membrane DOESN'T do, is control the nucleus of the cell.
The correct answer is (b.) an increase in the width of the stem. The increase in the width of the stem could be referred to as the secondary growth of the stem. Whereas the primary growth is the upward growth of the plant.
Answer: Option C
Explanation:
The human karyotype consists of 23 pairs of chromosomes. If a single pair of chromosome is picket out of the whole karyotype then the chromosome pair will have the some similarities or will have in common some traits.
The length of the chromosome, centromere position, traits and staining pattern will be same for this pair of chromosome.
Hence, the correct answer is Option C
Answer:
Explanation:
the process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a by-product.
Answer: D.
The E. reticulum and Golgi bodies are concerned with secretion and synthesis of molecular substances e.g protein , lipids and steroid. Therefore these cellular organelles should contain Plasma B cells and Islets of Langerhans. for protein hormone synthesis(insulin) and antibodies production
Explanation:
