The light-dependent reactions use light energy to make two molecules needed for the next stage of photosynthesis: the energy storage molecule ATP and the reduced electron carrier NADPH. In plants, the light reactions take place in the thylakoid membranes of organelles called chloroplasts.
A) evenly distributing solar radiation.
The oceans do not evenly distribute solar radiation on earth. Actually solar radiation on earth is never evenly distributed due to the spherical shape of the globe and titled nature of earth on its axis. However, oceans attempt to disturbed the solar energy from solar radiation around the earth through ocean currents. Nonetheless evenness is never achieved, and ideally cannot be reached as long as earth remains dynamic.
Explanation:
Usually the equatorial region is heated faster and warmer than higher latitudes. The ocean waters in the equatorial regions are, therefore, warmer and these currents head towards the poles (on ocean surface waters) as cooler oceans currents from the poles replace these waters at the equator (upweling from deeper denser waters in the ocean). This ensures the distribution of solar energy around the world. In addition, water evaporating from ocean surface carry with them energy that is transferred to the atmosphere. The atmosphere, on other hand, distribute this energy through wind currents.
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Answer:
Climate zones are areas with distinct climates, which occur in the east-west direction around the Earth, and can be classified using different climatic parameters. Due to temperature differences caused by the differences in radiation, recurring climatic conditions develop, such as winter and summer.
Explanation:
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Answer:
The nervous system comprises of the brain, sensory organs and spinal cord. The nerves of the body is used to communicate with all the parts of the body.
The brain and the spinal cord is known as the control system of the body which is helps in taking decisions.
The central nervous system helps in maintaining balance of the body, processing the information and based on that response is generated.
The signals from the brain is sent to various parts of the body and from body the signals are sent to the brain for processing.
Hence, the nervous system helps in sensory, motor and integration part of the body.
Answer:
The correct answer is option A.
Explanation:
Hemoglobin refers to a molecule that helps to carry oxygen from the lungs to other tissues of the body. Thus, the molecules of oxygen function as ligands to the hemoglobin. Each molecule of hemoglobin can combine with the four oxygen molecules.
The binding of one oxygen molecule enhances the affinity of hemoglobin towards binding with another molecule of oxygen. This procedure is known as positive cooperativity.
