1. A signal is translated to cause muscle contraction
Answer:
Because it is a mode for reproduction and growth.
Explanation:
Cell division is important for both single-celled as well as multi-cellular organisms.
In single-celled organisms, the cell division is the process which helps them to reproduce and form new organisms.
In multi-cellular organism, the cell division becomes more important because both, the division and growth in cells of multi-cellular organism occurs by means of cell division. When cells divide, the number of cells increases and it is seen as a overall growth in the organism. Damaged tissue repair is also accomplished by the cell division itself.
Answer:
A) Adenosine triphosphate, or ATP, is an organic compound that provides energy for many different metabolic processes. In the chloroplasts, ATP is a product of the first stage of photosynthesis, and it provides energy for the second stage. NADPH is an energy-carrying molecule created during the first part of photosynthesis when chloroplasts convert light energy into chemical energy. NADPH provides the energy needed for plants make sugar from carbon dioxide in the second stage of photosynthesis.
B) In photosynthesis in presence of sunlight plant utilizes carbon dioxide and water to produce carbohydrates and oxygen.
And the Oxygen is released out by the plant during day time. The released Oxygen is utilized by the living organism and undergo the process of respiration.
C) There is no one “most important” enzyme, but Rubisco is the catalyst that plants use to fix atmospheric carbon into biomolecules as part of photosynthesis. It is hyperabundant, representing a significant proportion of soluble protein in leaves, and is thought to be the most abundant protein on Earth.
Explanation: sorry its so long
The natural flow of rivers can be affected by several factors, such as building dams to provide drinking water, pumping of groundwater, climate change, and building of lands that change how natural water runs into surfaces and into rivers. All of these also disrupt the balance of ecosystem in the area.
Answer:
A. Yes, because the %A approximately equals the %T and the %G approximately equals the %C in both species.
Explanation:
According to Chargaff's rule, in all cellular DNAs, the number of adenosine residues (A) is equal to the number of thymidine residues (T). And the number of guanosine residues (G) is equal to the number of cytidine residues (C). Therefore, the sum of the purine residues equals the sum of the pyrimidine residues (A+ G= C+ T). It is based on the fact that a purine base always pairs with a pyrimidine base in a double helix DNA.
Chargaff’s rule is followed in all the double-helical DNA molecules irrespective of the species. In DNAs of sea urchin and salmon, the percentage of adenine is equal to that of the thymine and the percentage of guanine is equal to that of the cytosine. Therefore, Chargaff's rule is followed.
