1. The model shows water molecules
1 answer:
Answer:
Oxygen atoms in water molecules are also attracted to hydrogen atoms in other water molecules.
Explanation:
If you are referring to the picture attached and the choices given:
- Hydrogen atoms in water molecules are only attracted to other hydrogen atoms.
- Oxygen atoms in water molecules are attracted to both oxygen atoms and hydrogen atoms.
- Oxygen atoms in water molecules are also attracted to hydrogen atoms in other water molecules.
- Hydrogen atoms in water molecules are only attracted to an oxygen atom in the same water molecules.
What you can see there is what we call hydrogen bonding. The oxygen atoms are attracting the hydrogen of other water molecules. This type of bond forms in liquid water. Oxygen atoms of a water molecule are kind of negatively charged and can attract the partially positively charged hydrogen atoms of other water molecules.
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The question is incomplete as it is incomplete therefore a picture of the complete question has been attached.
Answer:
To be used by the cells for energy
Explanation:
The digestive process of humans digest or breakdown or oxidise the organic molecules present in the food to simple compounds which could be easily utilised by the human body.
The human body composed of tissue and cell requires energy to perform metabolic reactions in the form of ATP which are provided by the digestion of the complex food material.
The macronutrients present in the food thus are digested and absorbed by the cells to perform reactions which could provide energy therefore the selected option is the correct answer.
