Compound are substances which can be formed by chemically combining two or more elements. Mixtures are substances that are formed by physically mixing two or more substances.
Answer:
Hydrogen
Explanation:
Elements that have low ionization energies tend to have low electronegativities. The nuclei of these atoms don't exert a strong pull on electrons. Similarly, elements that have high ionization energies tend to have high electronegativity values. The atomic nucleus exerts a strong pull on electrons.
Breathing is the following characteristic of all life
Answer:
Explanation:
The natural particle sources include volcanoes, forest fires, ocean spray, biologic sources and the anthropogenic sources of particles are transportation, fuel combustion in stationary sources, a variety of industrial processes, solid waste disposal and miscellaneous sources such as agricultural activities and fugitive ...
Cell organelles in Eukaryotic cell:
<span> Eukaryotic cell has many cell organelles which are bounded by double membrane, a single membrane or having with out bounded membrane. I will enlist only four according to question requirement.
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1. Chloroplast:
It is s double membrane bound organelle present only in plant cells. It contain a green pigment called chlorophyll.
Function:
Chloroplast is the site where photosynthesis occurs in the presence of sunlight and glucose is prepared
2. Mitochondria:
It is found in all eukaryotic cells. It iis a double membrane bound organelle.
Function:
Mitochondria is known as power house of cell. It is the site where cellular respiration occurs and ATP is produced by breakdown of glucose in the presence of oxygen.
3. Endoplasmic reticulum:
It is a network of channels extended through out the cell, connecting nuclear membrane with plasma membrane. endoplasmic reticulum having ribosomes attached are called rough endoplsmic reticulum. While some endoplamic reticulum are free of ribosomes these are smooth endoplasmic reticulum.
Function:
a. It is the site where protein synthesis occurs, smooth endoplasmic reticulum is involved in lipid metabolism.
b. It also detoxify the effect of harmful substances.
c. It also help in nerve impulse transmission.
4. Nucleus:
It is one of the most important cell organelle present in the center in animal cell while at one side in plant cell due to the presence of large vacuole. It contains chromosomes.
Function:
Nucleus control all activities of a cell. It contains DNA that acts as a hereditary materials, transfer characters from parents to offspring.
