Plant Cell is a basic block of the plant structure. The plant cell diagram below displays various parts of the cell including nucleus, cytoskeleton, cell wall, membrane, centrosome, central vacuole, chloroplast and others. Lets explain what each component is responsible for:
The nucleus is the commanding center of the cell controlling various functions of the cell and containing DNA. The nucleus is covered by the nuclear membrane. This is different from the cell membrane, which is a protein layer on the inside of the cell wall. The cell wall is a thick membrane that allows for passing of the nutrients and forms the structure of the plant together with other cells. The jelly material outside of the nucleus is called cytoplasm.
The key difference between plant cells and animals cells is the process of photosynthesis. Plant cells are able to convert sunlight, water and carbon dioxide into sugars (energy), oxygen and water. Photosynthesis takes place in the chloroplasts, which contains chlorophyll. Chlorophyll is a molecule responsible for this process and is usually green in color. The central vacuole stores sugars and water for cell’s use.
Plant cell diagram below lists various cell parts and explains some of their functionality.
Smiley Faces – Smiley icons – Smiley Symbols – Smiley Face Symbols – Smilies, smiles, emotions, emoticon and happy smile face icons. The classic image was originally developed in 1963 and included a yellow circle with two black dots for eyes and an arc representing the mouth. Yellow Smiley Symbols are widely used emoticons as signs of happy faces and one’s positive and other emotions.
Fracking Diagram. What Is Fracking? Learn how fracking utilizes water to extract oil and natural gas from shale formations, why fracking is an economic and energy security solution. Hydraulic fracturing (fracking) is a well stimulation technique in which rock is fractured by a pressurized liquid, usually a water mixture. Fracking is the process of drilling down into the earth before a high-pressure water mixture is directed at the deposit.
Fracturing fluid is a mix of water sand and chemicals is pumped into the well. The pressures causes the rock surrounding the pipe to crack. The proppants hold open these cracks to allow the trapped gas to escape. Gas / oil flows up the well to be extracted. Some potential risks include groundwater contamination and air quality degradation but with deposits usually located at great depths, these are usually do not present a big problem.
Bike frame size and seat height chart below shows the dimensions of the frame size and seat height based on the inseam height. To choose the right bicycle and adjust the height of the saddle, first measure inseam height and then multiply the value by 1.08, which will give you the seat height (see the table below). This measurement can be used for both mountain and road bikes.
Getting the right bike size is important to maximize your speed, comfort and ability to handle, i.e. all the the things needed to ensure you get the best possible biking experience. It is important to use your personal measurement such as your height to choose the right bike frame and seat height. The bicycles are measured by the length of the seat tube, i.e. the tube where the saddle slides in to. Road bicycles are usually measured in cm while mountain bikes in inches. The diagram below will assist you with choosing the right bicycle regardless of the measurement system you are more accustomed to.
Human heart is a key organ in the circulatory system responsible for pumping blood through blood vessels. The heart is found slightly to the left of the center of the chest. As shown in the below diagram, it consists of four chambers: left atrium, right atrium, left ventricle and right ventricle. Multiple valves found in the heart ensure that blood flows only one way through the heart. The lining of the heart consists of three layers: endocardium, myocardium and epicardium.
The blood low in oxygen flows into the right atrium from the superior and inferior vena cavae and further flows into the right ventricle. From here it is pumped into lungs where it releases carbon dioxide and absorbs oxygen. Blood high in oxygen content flows back to the left atrium and then passes through the left ventricle. It is then pumped out via the aorta. Aorta and other arteries transport blood away from the heart. The blood also carries nutrients and waste between the digestive system and various body organs.
The heart is essentially a muscle that contracts at a resting rate of ~72 beats per minute. The lower the heart rate when resting, the better for the health and individual’s longevity. The heart rate may increase during exercising. However, regular exercises ensure that the rate slows down in the longer term.
The heart diagram below lists key parts of the heart.