Water has a characteristically high specific heat, making it an important vector (or mechanism) for redistributing heat around the globe.
Specific heat can be defined as the quantity of heat required to raise the temperature of one gram of a substance by one degree Celsius. The units of specific heat are usually calories or joules per gram per degree Celsius.
The specific heat of water is 1 calorie (or 4.186 joules) per gram per degree Celsius. The incoming radiation from the sun is responsible for warming up the Earth. Water in particular, has a high heat capacity at 4.18 J/g*C, which indicates that more heat is needed to warm a gram of water. This is the reason that throughout a warm summer day, the water in the ocean does not experience a significant change.
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Answer:
Energy stored in plants is transferred to humans and animals that eat them
Explanation:
Plotting a graph of the mass or volume of the product created against time allows you to determine the reaction's pace. This is depicted for two reactions on the graph. The rate of reaction is inversely proportional to the gradient of the line; that is, the steeper the line, the higher the rate of reaction
<h3>What is Rate of reaction ?</h3>
The result is a straight line with a positive gradient on a graph of reaction rate against concentration (a graph showing proportionality).
- The half-life is constant in a concentration-time graph of first order. As a result, the period of time it takes for the concentration to decrease to 50% of its initial value is constant.
- It would be considered first order if you obtained a straight line with a negative slope. If you graph the inverse of the concentration for second order
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Answer:
A. Molecular changes such as extracellular signals on extracellular ligands can result in quick changes in cell behaviour. One example is insulin. Upon insulin binding on the receptor on the cell membrane, the cell release GLUT4 transporters (for muscle cells) to increase uptake of glucose.
B. Slow changes in cell behaviour can be observed for other lipophilic hormones or intracellular receptors such as glucocoortoid or estrogen which reacts with receptors in the cells.
C. Insulin is required to maintain a constant blood glucose level and hence levels of insulin has to be mediated in correspondence to the blood glucose levels. Fast acting signalling is thus required for homeostasis of blood glucose levels. Where for such lipophilic hormones such as steriods, glucocortoid, these hormones tend to have a longer lasting effect and hence results in a slow change.
