Body and cell

Question 1

List the functions of the bones in the body.

Answer 1

Structure
Support
Protect internal organs
Produce blood cells (bone marrow)
Calcium storage

Question 2

Why can men have kids at an old age, while women cannot?

Answer 2

Menopause, mutations (because the eggs stop in the middle of dividing)
Unlike women, who are born with a finite number of eggs, men continue to produce sperm throughout their lives, and some can father children into their 60s and beyond — an age where women’s clocks have totally stopped ticking. Menopause usually happens around age 45 to 55. During that time, women stop having their periods and are no longer fertile.

Question 3

Why do you get scarring from a second-degree but not a first-degree burn?

Answer 3

First-degree burns usually don’t get infected or leave a scar. The skin may get red but won’t break, and they heal within 3–5 days. Second-degree burns are also called partial-thickness burns—this type of burn damages the epidermis and the dermis (the second layer of skin). For a first-degree burn, which it only affects the epidermis, the stem cells can regenerate the skin quickly, but when the second-degree happens, it affects the dermis, and the stem cells also get affected.

Question 4

Why is it more likely to develop colorectal cancer if you use the bathroom every 3 days vs 1 day?

Answer 4

The stool becomes dry due to water loss after 3 days causing damage, the stool is full of toxins that sit in your body.

Question 5

If you stop eating meat, what are the possible consequences and why?

Answer 5

You miss essential amino acids that are not directly produced by your body, such as the 9 amino acids: threonine, methionine, lysine, valine,, leucine, isoleucine, histidine, phenylalanine, and tryptophan. These AA are only found in meat, and they need to be supplied from there.