Answer:
Diffusion expends no energy. Rather the different concentrations of materials in different areas are a form of potential energy, and diffusion is the dissipation of that potential energy as materials move down their concentration gradients, from high to low.
Explanation:
Answer:
The part of a seed grows into a root: Radicle
The part that acts as a protective covering for a seed during seed dormancy: Seed coat.
Explanation:
The seed of the plants carries embryo in it. The part of the embryo that serves as the embryonic root is called radicle. Once the conditions become favorable for growth and the seed germinates on suitable substratum, the radicle enlarges and gives rise to roots.
The seed coat is the part of the seed that protects the embryo from any injury during the seed dormancy. The seed coat is derived from the outer most covering, that is integuments of the ovule after fertilization.
Answer:
Cellular respiration is the oxidation of food substances coupled with the release of energy (ATP). It occurs in the mitochondria of living cells.
b. 38 ATP in animals. In plants 2 ATP.
Anaerobic respiration is one that that takes place in the absence of oxygen while aerobic respiration is one that requires oxygen to take place.
This is because it is the code language that tRNA uses during the process of translation.
In the cell, DNA has the genetic code for proteins needed for the cell to be able to function. To be able to make a particular protein, the code for that protein, which can be compared to a blue print has to be delivered from the DNA to the ribosome which can be compared to a work shop for it is here that amino acids, the building blocks of protein, are put together to form the protein.
In the cell nucleus, DNA transcribes (copies) the blue print on to mRNA, which then leaves the nucleus and carries the blue print to the ribosomes in the cell cytoplasm and attaches to a ribosome. tRNA begins to translate or read the information on the attached mRNA in triplets or codons and not as single nucleotides. Each codon is a code for a specific amino acid. tRNA then fetches amino acids (coded for by each codon) from the pool of free amino acids in the cytoplasm and brings them to the ribosome where they are joined to each other to form a chain thus creating the protein.