Answer:
Glycolysis evolved before Kreb's cycle and Electron Transport chain. This view is supported by following facts:
- Glucose cannot enter the mitochondria and it needs to be broken down into pyruvate in the cytosol by the process of glycolysis.
- Pyruvate then forms acetyl CoA that enters the mitochondria where it undergoes Kreb's cycle.
- The Electron transport Chain occurs by passing of electron and finally donating it to the electron acceptor oxygen. The molecules of NADH produced in the preparatory phase of glycolysis provides the electron for electron transport chain.
- Thus Glycolysis must have evolved before Kreb's Cycle and Electron Transport Chain otherwise the raw materials for both the processes would not have been available.
The correct answer is B. Competition for food and shelter would increase, so the toucan population would decrease.
Explanation:
Birds such as toucans rely on trees to obtain food, shelter and a place to nest. Due to this, a decrease in the population of trees would cause food, shelter, etc. are limited, and therefore not all toucans can have access to it. This situation will lead to competition between toucans, and a decrease in the population of these birds. This decrease would be the result of toucans having fewer chances to survive and reproduce because food and shelter play an important role in these two aspects. According to these ideas, it is likely "competition for food and shelter would increase, so the toucan population would decrease".
Answer:
Three diseases/disorders caused by mutations:
- Thalassemia
- Cystic Fibrosis
- Tay-Sachs disease
Answer:
A.endometrium
Explanation:
The endometrium is the inner layer that lines the uterus. It is made up of glandular cells that make secretions. The myometrium is the middle and thickest layer of the uterus wall.
The fertilized part of a flower is called an ovary
