- An aldehyde exists in chain form.
- A ring-shaped hemiacetal exists.
Hemiacetal:
- A reducing sugar is one that reduce other compound and oxidized itself. A sugar can be called as reducing sugar if it has an aldehyde group in the open chain form or hemiacetal group in ring form.
- The hemiacetal consists of a hydrogen bonded to a "R-group," an alcohol, an ether, and a carbon. When an aldehyde and an alcohol interact, the hemiacetal is created.
- The chemistry of carbohydrates revolves around the interactions between hemiacetals and hemiketals. Carbohydrates are made up of long chains of the sugar units known as monosaccharides, much like proteins are long chains of amino acids and DNA and RNA are long chains of nucleotides.
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There are actually 8 characteristics of life, so I'll just give you them all. Here they are:
1. DNA
2. Reproduce
3. Uses Energy
4. Responds to Stimuli
5. Growth and Development
6. Cells
7. Maintains homeostasis
8. Adaptation through evolution
I hope this answered your question!
1. The answer is; B
This is because the soup has a higher temperature than the surrounding air. The heat will move from hotter object to the cooler object in search of thermal equilibrium. Heat transfer will only stop when the soup and the surrounding air have more or less the same temperatures.
2. The answer is; B
No mas is required because radiation (which are mainly electromagnetic waves) can transfer energy even through a vacuum. Other forms of energy transfer (such as convection and conduction)involve the transfer of vibrational motion from one molecule of matter to the next.
3. The answer is; D
The sun rays (which are electromagnetic waves that travel in photons) travel from the sun and through the vacuum of space before they reach the earth. When the photons hit the molecules that make up your skin, they energize them and cause them to vibrate more energetically. As they, differentially, lose this kinetic energy (when resuming a lower excitation state), this energy is expended as heat which you feel on your face.
4. The answer is; D
To start with, it is important to note that water is not a good conductor of heat. Therefore, as it is heated from below by the Bunsen burner, the water at the bottom of the glass gets warmer that than at the top of the glass. Warm water is less dense than cool water hence begin to rise while the cooler water from the top replaces the rising warm water. This process continues and forms convection currents until the water starts to boil.
5. The answer is; B
When the can is opened, it exposes the soup to the environment. This way the heat from the soup (due to thermal disequilibrium) transfers from the soup to the air. Because the soup is hotter, it loses heat energy to the surrounding as dictated by laws of thermodynamics.
The process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water.
