Diffusion is the movement of molecules

Assignment Help Biology
Reference no: EM13235983

Diffusion is the movement of molecules (gas, minerals and particles) from an area of higher concentration to an area of lower concentration. Diffusion is an important process that occurs within the cells of plants and animals. One example of diffusion is the exchange of oxygen and carbon dioxide during respiration. When we breathe in oxygen there is a higher concentration of oxygen in our lungs than in our circulating red blood cells, so oxygen diffuses across cell membranes from our lungs into our blood vessels and into our red blood cells to be distributed throughout our body. The reverse happens with carbon dioxide that we exhale. The carbon dioxide is more concentrated in our red blood cells (carbon dioxide is a by-product of cellular respiration - which we will study next) and is diffused into the lungs (lower concentration) and then we exhale releasing carbon dioxide into the environment. This carbon dioxide is taken in by plants to be used in photosynthesis.
Another example of diffusion is when nutrients are taken into a plant. Plants utilize nutrients to grow and live and these nutrients are obtained by diffusion. Since nutrients are more concentrated in the soil around the roots, they diffuse into the roots and are carried throughout the plant to the various cells.
Materials needed: 
1 tube of food coloring (darker colors work best, but any color will do)
1 large, clear drinking glass or similar container
Water (from your faucet)
Procedure:
1. Fill glass container almost to the top with cold water.
2. Drop 3-4 drops of food coloring into the water.
3. Observe for 2-3 minutes - taking photos to record the progress.
4. Record your observations. How do you think diffusion helps nutrients, waste and other molecules move around the cell?  

Reference no: EM13235983

Questions Cloud

Supreme court’s decisions on federalism in past decade : After the colonists formally declared independence from Britain, the fight to gain actual independence continued for. The Supreme Court’s decisions on federalism in the past decade could be described as
Find the magnitude and direction of electric field in room : A small 12.3 g plastic ball is tied to a very light 28.6 cm string that is attached to the vertical wall of a room, Find the magnitude and direction of the electric field in the room
What benefit would be gained by utilizing linear programming : What benefit would be gained by utilizing linear programming (LP) for marketing research?
What five separate projects have calculated rates of return : Five separate projects have calculated rates of return of 7, 11, 15, 18, and 20 percent per year. An engineer wants to know which projects to accept on the basis of the rate of return. She learns from the finance department
Diffusion is the movement of molecules : Diffusion is the movement of molecules (gas, minerals and particles) from an area of higher concentration to an area of lower concentration. Diffusion is an important process that occurs within the cells of plants and animals. One example of diffusio..
Medieval civilization in europe : what were four or five major characteristics of the Medieval Civilization in Europe. Discuss two of them in length. Did any of those characteristics persist and survive after 1500? Explain?
Is the company delivering six sigma quality to its customers : If not, then how much should the standard deviation of the process be reduced to get six sigman quality?
Compute the work required to expand the cell surface : calculate the work required to expand the cell surface. Assume the cell is surrounded by water and that T=310K.
Which of the following describes zajonc famous theory : Which of the following describes Zajonc's famous theory of social facilitation and inhibition?

Reviews

Write a Review

 

Biology Questions & Answers

  Determine the relative gene order in genes

In Drosophila melanogaster you are studying three phenotypes that you suspect are linked on the same chromosome. THe homozygous recessive traits for each locus are.

  Determine the regulated steps of glycolysis

What are the regulated steps of glycolysis? What is lactic acidosis? What is the biochemical basis of this condition?

  What are the components of a species ecological niche

what are the components of a species ecological niche in relation to primate behavioral ecology?

  Determining the atp yield for each process

The complete oxidation of one glucose molecule yields thirty or more ATP. Glucose catabolism includes glycolysis, pyruvate oxidation, and the citric acid cycle.

  Explain the allele of a bacterial gene

The wild type allele of a bacterial gene is easily selected by growth on a special medium, if the enzyme HindIII is used, then clones are easily found

  Properties of two hypothetical genetic codes

It is commonly reported that up to 50 percent of a cell's energy budget is spent on protein synthesis. Think about the properties of two hypothetical genetic codes constructed with the four common nucleotides.

  Discuss the relative amounts of fluids lost

Ralph was born without sweat glands. Will this have a significant effect on his ability to maintain normal water balance?

  Describe the growth of a highly branched

Describe the growth of a highly branched, large oak tree from an embryo within an acorn.

  What is the synapomorphy of mosses and vascular plants

Horn Sporophytes are horn-shaped. Horn Possess Gemmae. Can undergo sexual reproduction. Mosses what is the synapomorphy of hornworts, mosses and vascular plants? Stomata Pores that allow the uptake of CO2 and release of O2, do not close like other st..

  How would he respond to an infection

Jake has an inherited disease in which his Helper T Cells fail to produce lymphokines. How would he respond to an infection?

  What is the pk of the weak acid ha

What is the pK of the weak acid HA if a solution containing 0.1M HA and 0.2M A has a pH of 6.5?

  Criteria for diagnosing puerperal infection

Discuss the criteria for diagnosing puerperal infection. What structures may be involved in a Puerperal infection?

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd