Answer:
1. In Indian villages, as the body of women is covered completely with clothes due to the tradition and custom they are abiding to follow, the skin does not come in contact with the sunlight, which further results in the low or no production of vitamin D within the body.
Due to the deficiency of vitamin D, inadequate absorption of calcium occurs from the gastrointestinal tract and kidneys. This eventually leads to impairment in the process of bone mineralization resulting in issues like a fracture, pain in the bone, weakness in muscles and other issues. Vitamin D is also an essential part of the production of certain neurotransmitters and forms an essential component for brain nutrition, thus, its deficiency also results in conditions like depression.
2. The dresses used by women of Indian villages cover the skin completely, due to which sunlight fails to reach the skin. This results in the lack of vitamin D formation, as for vitamin D sunlight is essential for converting cholesterol present in the skin to 7-dehydrocholesterol also known as pro-vitamin D. This pro-vitamin D is a precursor of vitamin D. Due to no or lack of vitamin D formation, deficiency of calcium takes place within the bones that eventually results in pain and weakness.
The correct answer is: oxaloacetate
Anaplerotic reactions are chemical reactions that form intermediates that can be used in the further steps of metabolic pathways. These reactions are very important, because it is crucial for the cell to regulate concentrations of TCA cycle metabolites and intermediates.
The reaction in which pyruvate is converted to oxaloacetate is catalyzed by pyruvate carboxylase and it occurs in mitochondria. Also, pyruvate can be converted to L-malate, in a similar way.
Answer:
cell wall provides protection and structural support
Answer:
A. a lamp being turned on
B. a toaster being used to toast bread
D. a car horn honking
Explanation:
Energy transformation is the conversion of one form of energy to another form in accordance with the law of conservation of energy. According to this question, Phil is observing a flashlight, which turns chemical energy (batteries) into light energy.
From the examples given in this question, the following are examples of scenarios that involve energy transformation:
- A lamp being turned on: This converts chemical energy to light energy.
- A toaster being used to toast bread: This converts electrical energy to heat energy.
- A car horn honking: This converts electrical energy to sound energy.
Note that, melting of a chocolate does not transform any form of energy.
Answer:
in collecting animals or specimen
