shahzaib hassan BIOLOGY   -   Biology

What is the role of the myelin sheath in neurons?

The myelin sheath is like the plastic coating around an electrical wire. It insulates the axon of the neuron and allows signals to travel faster, making communication between neurons quicker and more efficient.
shahzaib hassan BIOLOGY   -   Biology

What structure in the human body is responsible for filtering blood and producing urine?

The kidneys are like filters that clean the blood by removing waste and extra water, which is then turned into urine. They help maintain the body?s balance of water, salts, and minerals.
shahzaib hassan BIOLOGY   -   Biology

Which of the following molecules serves as the final electron acceptor in the electron transport chain?

Oxygen is like the finish line in a race. At the end of the electron transport chain, oxygen accepts electrons and combines with hydrogen to form water. Without oxygen, the chain stops, and energy production is halted.
shahzaib hassan BIOLOGY   -   Biology

What is the primary role of B lymphocytes in the immune response?

B lymphocytes are like specialized soldiers that produce weapons (antibodies) to target and destroy specific invaders (pathogens). These antibodies bind to the pathogens, marking them for destruction by other immune cells.
shahzaib hassan BIOLOGY   -   Biology

What is the primary function of the large intestine in the digestive system?

The large intestine is like a sponge that absorbs water from the leftover food waste. Once most of the nutrients have been absorbed earlier in the digestive process, the large intestine helps form solid waste by removing water.
shahzaib hassan BIOLOGY   -   Biology

Which hormone is responsible for regulating the sleep-wake cycle in humans?

Melatonin is like a natural sleep signal. When it gets dark, your brain releases melatonin to tell your body that it's time to go to sleep. It helps regulate your sleep-wake cycle, making you feel sleepy at night.
shahzaib hassan BIOLOGY   -   Biology

What type of immunity involves the production of antibodies in response to an antigen?

Active immunity is like training your body?s soldiers (the immune system) to recognize and attack a specific enemy (antigen). Your body makes its own antibodies to fight off infections after exposure to a disease or through vaccination.
shahzaib hassan BIOLOGY   -   Biology

Which process results in the production of lactic acid during anaerobic respiration in humans?

Fermentation is like a backup plan when there?s no oxygen. In the absence of oxygen, cells break down glucose through glycolysis, but instead of going through the Krebs cycle, they convert pyruvate to lactic acid to produce energy.
shahzaib hassan BIOLOGY   -   Biology

Which organelle is primarily involved in detoxification and lipid synthesis?

The smooth endoplasmic reticulum (ER) is like a cleanup crew and a fat-making machine. It helps detoxify harmful substances and makes lipids, which are fats that cells need for membranes and other functions.
shahzaib hassan BIOLOGY   -   Biology

What type of bond holds the two strands of DNA together?

Hydrogen bonds are like weak glue that holds the two strands of DNA together between the base pairs. They?re strong enough to keep the strands together but weak enough that they can be easily separated for replication or transcription.

BIOLOGY