160g of O₂ will be required to fully react with 150g of glucose when glucose is broken down in our bodies to produce carbon dioxide and water.
The breakdown of glucose in our bodies can be represented by the following reaction:
C₆H₁₂O₆(s) + 6O₂(g) → 6CO₂(g) + 6H₂O(g)
As shown in the reaction, a mole of glucose reacts with 6 moles of oxygen.
To calculate the molecular mass:
1 mole of glucose (C₆H₁₂O₆) = (6x12) + (12x1) + (6x16) = 180g
6 moles of oxygen= 6x (2x16) = 192g
180g of glucose reacts with 192g of oxygen. So, to calculate the amount of oxygen required to fully react with 150g of glucose=
150 x 192/180 = 160g of oxygen.
Therefore, 160g of oxygen is required to fully react with 150g of glucose.
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Answer:
Meristematic tissue.
Explanation:
Meristematic tissue contains stem cells which can differentiate into permanent cells. This tissue is at all continuous growth points in a plant, at the apical buds ( where leaves and flowers form) and at the ends of roots.
- dermal tissue is in animals - this refers to the tissues associated with skin
- vascular tissue refers to the xylem and phloem of a plant- no growth occurs here.
- Permanent tissue is tissue which has already differentiated and grown. This is the final form.
Answer:
C
Explanation:
Resource availability may be the selection pressure, however, it will not lead to evolution. Evolution is by chance whereby offsprings accumulate mutations that result in phenotypic changes that may allow them to access other sources of food.
Answer: e. All of the above
Explanation:
The primary productivity (photosynthesis) can be define as the total production of organic matter in the form of carbohydrates from available atmospheric carbon dioxide and water in the presence of sunlight, appropriate temperature, and nutrients by the plants or other autotrophs. The life on earth sustains due to primary productivity as the plants prepare their own food and these plants are consumed by the animals and other living beings.
On the basis of the above description, all of the above is the correct option. As plants or other autotrophs will not be able to synthesize their food in the absence of nitrogen (nutrient) obtain from the soil, light, temperature, and water.
Plant decomposers would operate above the producer level. Two examples are earthworms and fungi. These would decompose dead plant matter into nutrients that are then re-assimilated by plants. Animal decomposers operate within the consumer levels, and would include species such as maggots, shrimp, clams, crabs, lobsters and flat<span>worms</span>. Nutrients recycled by these decomposers would also be recycled back to the producers.