Answer:
A nucleotide is the basic building block of nucleic acids.
Explanation:
RNA and DNA are polymers made of long chains of nucleotides. A nucleotide consists of a sugar molecule (either ribose in RNA or deoxyribose in DNA) attached to a phosphate group and a nitrogen-containing base.
Hope this helps even though it was yesterday :)
Answer:
A sewing needle floats when it is placed gently on top of water in a bucket - surface tension
Water molecules ding to plant cell walls - adhesion
A water strider runs across a pond without breaking the surface - surface tension
A drop of water spilled on a table forms a drop on the table, rather than spreading out over the surface - cohesion
Water molecules cling to the side of a beaker - adhesion
Water molecules are attracted to each other - cohesion
Explanation:
The surface tension refers to the tendency of the surface of a liquid to remain unbroken by an external force due to the cohesive property of the molecules of the liquid. Instead of being broken, the surface of the liquid stretches like an elastic membrane.
The adhesive property of a liquid, also known as the force of adhesion, refers to the property of the molecules of the liquid to stick to other molecules while cohesive property or cohesion refers to the property of molecules of liquids to stick to themselves.
Hence,
<u>Surface tension</u>
- A sewing needle floats when it is placed gently on top of water in a bucket.
- A water strider runs across a pond without breaking the surface.
<u>Cohesion</u>
- A drop of water spilled on a table forms a drop on the table, rather than spreading out over the surface.
- Water molecules are attracted to each other.
<u>Adhesion</u>
- Water molecules ding to plant cell walls
- Water molecules cling to the side of a beaker
Hippocrates was a Greek physician, he is well known for the discovery of the medicines, which were based on the scientific observation. He is also known as virtual originator of the etiology and the pathology.
Hippocrates suggested that the body can remain disease free, or the chances of being diseased can be diminished, if good diet, fresh air, cleanliness and exercise are maintained.
Hence, four things, which help body to heal itself, according to Hippocrates are:
- Good diet
- Cleanliness
- Exercise
- Fresh air
Answer:
D. fats
Explanation:
Triglycerides are the main substance of body fat found in humans and other vertebrates. These are esters derived from glycerol and fatty acids. High amounts of triglycerides are dangerous for heart health.
