Answer: Transport proteins act as doors to the cell, helping certain molecules pass back and forth across the plasma membrane, which surrounds every living cell. In passive transport molecules move from an area of high concentration to an area of low concentration.
Answer:
An egg or sperm only has half of the parent's sex chromosome pair. An egg will always have an X chromosome, since the woman's sex chromosome pair only has Xs. Sperm can have either an X chromosome or a Y chromosome. If a sperm with an X chromosome fertilizes the egg, the new cell will have two X chromosomes. One came from the father's sperm and one came from the mother's egg. Since the sex chromosome that is made is XX, the cell will grow into a girl baby.
Explanation:
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The processes and their reactions are discussed below.
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Explanation</u>:</h3>
<u>Carbon dioxide</u>:
In case of plants the carbon dioxide is needed to produce glucose in the process of photosynthesis. This step is very crucial for the survival of each and every organisms in the living world. The energy for this process of photosynthesis is found from sun's rays.
In case of humans, carbon dioxide is produced through respiration. This produces energy that helps the organism to sustain living.
Oxygen:
It is produced by plants from photosynthesis through splitting of water. The energy for this process comes from Sun's energy.
In case of animals, the oxygen is needed for respiration. This is required to accept the electron in the last step of aerobic respiration. This produces the energy that helps to sustain the living.
Water:
Both plants and animals require the water for performing their metabolic works. The water is obtained by plants from soil through roots and conducted to leaves by vascular tissues xylem. Similarly the animals obtain water from drinking. They need the water to perform digestion, and each and every metabolic process.
Glucose:
Glucose is produced by plants from photosynthesis. It is produced absorbing the energy of Sun's rays.
In case of animals, the animals obtain glucose from food and they digest the glucose through respiration and produce energy that helps them to sustain life.
Answer:
Through the process of cellular respiration, the energy in food is converted into energy that can be used by the body's cells. During cellular respiration, glucose and oxygen are converted into carbon dioxide and water, and the energy is transferred to ATP.
Explanation:
Cells need a source of energy, they get this energy by breaking down food molecules to release, the stored chemical energy. This process is called 'cellular respiration'. The process is happens in all the cells in our body. Oxygen is used to oxidize food, main oxidized food is sugar(glucose).
<span>terracing prevents erosion by eliminating or at least minimizing the slope of the ground which in turn slows the water run off. This allows plant life to root better which keeps the soil in place.</span>
