Question 1

What is a bio-battery?

Accepted Answer

A device that stores electrical energy using organic compounds.

Question 2

What is the primary energy source for most bio-batteries mentioned in the text?

Accepted Answer

Glucose

Question 3

How do bio-batteries generate electricity?

Accepted Answer

Through the enzymatic breakdown of glucose, releasing electrons and protons.

Question 4

Which of the following is NOT an advantage of bio-batteries listed in the text?

Accepted Answer

Long-term energy storage capabilities.

Question 5

What are two common types of bio-batteries mentioned?

Accepted Answer

Enzymatic and Microbial bio-batteries

Question 6

What is the main function of thermoelectric generators in the context of wearable devices?

Accepted Answer

To convert body heat into electricity.

Question 7

According to the text, what is a benefit of thermoelectric generators as wearable devices?

Accepted Answer

They provide constant power as soon as they are worn.

Question 8

What is a key feature of the future wearable thermoelectric devices being developed by scientists?

Accepted Answer

They can power devices without a battery.

Question 9

How do modern technological innovations turn the human body into a functional power source, according to the text?

Accepted Answer

By absorbing heat radiated from biochemical activities and converting it into electrical energy.

Question 10

What happens to a battery when it is used?

Accepted Answer

It is simultaneously being depleted and will eventually need to be replaced.

Question 11

What is a characteristic of the new wearable thermoelectric devices mentioned that makes them environmentally friendly?

Accepted Answer

They are stretchy and can heal themselves when damaged and are fully recyclable.

Question 12

In a bio-battery system, what must be regularly supplied for it to continue functioning?

Accepted Answer

Glucose and sufficient biological enzymes.

Question 13

To improve the long-term use of bio-batteries and ensure they preserve more energy, what needs to happen?

Accepted Answer

Depleted supplies of glucose and enzymes must be replenished, and released electrons captured and recycled.

Question 14

What is the approximate voltage generated by future wearable thermoelectric devices per square centimeter of skin space?

Accepted Answer

About 1 volt

Question 15

How does a bio-battery work based on the provided diagram (Figure 7.0)?

Accepted Answer

It relies on the flow of electrons and protons, with enzymes at the cathode terminal utilizing energy to produce water.

Question 16

What is the role of the separator in a bio-battery construction (Figure 6.0)?

Accepted Answer

To prevent the anode and cathode terminals from interacting directly.

Question 17

Where is the glucose source supplied in a bio-battery system as shown in Figures 6.0 and 7.0?

Accepted Answer

At the anode end.

Question 18

What is a disadvantage of bio-batteries compared to lithium-based electrical batteries?

Accepted Answer

They preserve less amount of energy.

Bio-Batteries and Thermoelectric Generators for Wearable Devices

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