The four major classes of biological macromolecules are carbohydrates, lipids, proteins, and nucleic acids.
I think the correct answer would be D. The specialized structure that helps a vascular plant to soak up water after a rainfall in a desert would be the extensive shallow root system with root hairs. An example of this would be the cactus. It has a root system that is very different from any plant that is not found in the desert. The roots are found just exactly below the surface. It is ready anytime to suck up water from rain or snowfall and transport it to the stem of the plant. Also, after a rain, the cactus would grow tiny roots in its body to aid in the absorption of water more quickly.
The smaller cell because it has less distance in the cell, so it will occur quicker.
Answer:
Peer Review
Explanation:
Peer review is a process where by, professionals or colleagues in a particular discipline with equal qualifications and abilities crosscheck the findings of fellow colleagues before the findings can be published. Peer review can be done in many disciplines. For example, we could have the medical, technical, and scholarly peer reviews.
Peer review is important because it helps to confirm the accuracy of findings and also provide a means to regulate the activities of scientific experts. Peer review is done anonymously, which means that the identity of those doing the review is not revealed. This would help to eliminate bias.
Answer:
The correct answer will be option-B.
Explanation:
Photosystem of a plant is complex pigment-protein molecules which absorbs the light energy required for the formation of a glucose molecule.
Two types of Photosystem are present in the plants which are: P₆₈₀ and P₇₀₀. The 680 and 700 denote the wavelength of the light energy absorbed by the pigment of the chloroplast. The electrons get excited only at their absorbing wavelength.
Thus, Option-B is the correct answer.