Search results
Results From The WOW.Com Content Network
Dec 8, 2014. Both rates and ratios are a comparison of two numbers. A rate is simply a specific type of ratio. The difference is that a rate is a comparison of two numbers with different units, whereas a ratio compares two numbers with the same unit. For example, in a room full of students, there are 10 boys and 5 girls.
Rate of change is a number that tells you how a quantity changes in relation to another. Velocity is one of such things. It tells you how distance changes with time. For example: 23 km/h tells you that you move of 23 km each hour. Another example is the rate of change in a linear function. Consider the linear function: #y=4x+7#
Explanation: When the cell increases in size, the volume increases faster than the surface area, because volume is cubed where surface area is squared. When there is more volume and less surface area, diffusion takes longer and is less effective. This is because there is a greater area that needs to receive the substance being diffused, but ...
A rate is simply a specific type of ratio. The difference is that a rate is a comparison of two numbers with different units, whereas a ratio compares two numbers with the same unit. For example, in a room full of students, there are 10 boys and 5 girls.
The reaction rate of a chemical reaction is the amount of a reactant reacted or the amount of a product formed per unit time. Often, the amount can be expressed in terms of concentrations or some property that is proportional to concentration. For a reaction such as A → 2B, we could measure either the rate at which [B] increases or the rate ...
Explanation: The denominator is always 1. Km per hour means: How many Km in ONE hour. Students per class means: How many students in ONE class. Dollars per box means: How many dollars for ONE box. "per" means for each or for every 'ONE'.
Don't Memorise. May 23, 2015. 1:1 ratio is 1 part or 1 unit of a particular quantity. for example. two bottles of water both having 2 liters of water each. the ratio will be 2 2 = 1 1 = 1:1. two boxes both having 50 grams of butter each. the ratio will be 50 50 = 1 1 = 1:1. Answer link.
1 Answer. Samrin M. Feb 27, 2018. Rate. Explanation: A "rate" is a ratio involving a comparison of 2 quantities that have different unites of measurement. An example of this can be miles per hour or g/mL. Answer link. iOS.
More the surface area to volume ratio, more is the diffusion. Surface area to volume ratio, in simple means the size of surface area to the volume of substance that can pass through it at a particular time. Amoeba and some bacterias are flat and have large surface area to volume ratio. So the diffusion rate is very high due to large surface area. Where as humans have small surface area: volume ...
The surface-area-to-volume ratio or SA:V, is the amount of surface area of an organism divided by its volume. Assume that you are a spherical cell. Your SA:V is important because you depend on diffusion through your cell wall to obtain oxygen, water, and food and get rid of carbon dioxide and waste materials. Let's calculate SA:V for three cell sizes. "SA" = 4πr^2 and V = 4/3πr^3 r = 1 mm ...