Hydrogen has one valence electron. To make it an ion, you need to remove this valence electron. When you remove an electron, the element becomes positive because you are taking away the negative
Explanation:
PLANT-LIKE:
presence of flagella
shows absence of cell wall, though chloroplast may be present
ANIMAL-LIKE:
slime mold belongs in this category
absence of cell wall, as well as chloroplast
FUNGUS-LIKE:
feeds on decaying matter enclosed by a membrane called a pellicle.
Answer: I) Isotopes
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Answer:
air is drawn into the lungs
lungs expand
the muscles between the ribs contract to move the ribs up and down
air pressure in the chest cavity decreases
the diaphragm contracts and flattens
Answer: unfavourable ph condition for the pepsin
Explanation: during digestion, enzymes are needed to aid the process.digestive enzymes are biological catalyst that breakdown large food particles into digestible form .
As biological catalyst, enzymes require an optimum temperature and pH condition.outside this temperature or pH,the enzyme is denatured.
In the stomach, hydrochloric acid is required to convert pepsinogen into it's active form,pepsin.the acid also creates an optimum low pH that pepsin needs to function.
As the food moves to the small intestine,the pH is alkaline and is unfavourable for pepsin to function.
