Both the smooth and rough endoplasmic reticulum help in the production and storage of proteins The main difference is that one contains ribosomes on it and the other does not. The rough endoplasmic reticulum has ribosomes on its surface. This is what give the RER a "rough" appearance.
Answer: Option d) Connective tissue
Explanation: A connective tissue is a continuous network or a matrix that provides structural support, binds together and protects tissues and organs of the body. A connective tissue consists of cells, protein fibers and an amorphous ground substance. Examples of connective tissue includes bones, tendons, cartilage e.t.c
Answer:
No, it wouldn't provide all the elements needed to assemble lipids, nucleic acids or proteins.
Explanation:
As it can be seen from the diagram, the breakdown of glucose molecules will release hydrogen, carbon and oxygen. All these elements are needed to make lipids, proteins and nucleic acids. But apart from these elements, other elements are also required for the making of these compounds. For example, nucleic acid would require the elements nitrogen and phosphorus apart from carbon, hydrogen and oxygen for its making. Proteins would need nitrogen, sulphur and selenium apart from carbon, hydrogen and oxygen.
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Answer:
Hydrophobic tails interact among themselves, while polar (hydrophilic) heads interact with water
Explanation:
In the first place, the polar heads of the phospholipids localized on the membrane surface interact with surrounding water molecules that also surround other cell phospholipids. Second, the non-polar tails of the phospholipids from one cell interact with molecules that repel water in the other cell phospholipid. Consequently, it forms a bilayer structure composed of two sheets of phospholipids where hydrophobic tails are arranged on the inside of the membrane, thereby allowing the interaction tail-to-tail among different cell membranes, while the polar heads of the disrupted phospholipid membranes interact together with the surrounding water.
