Ans.
Steroids are defined as active organic bio-molecules, having four rings with a specific molecular configuration. Steroids play role in two major functions: as hormones or signaling molecules and as structural components of plasma membrane.
Examples of steroid hormones are estrogen, progesterone, and cortisol. Thus, the correct answer is 'option b). they serve as chemical messengers.'
The green house effect is when their is too much pollution in the air. Cars, factories and industries cause a lot of pollution in the air which then causes the ozone to thin out which causes it to get hotter because the ozone is a layer that keeps the temperature not too hot or cold
Answer:
yes
Explanation:
thornless roses are often a result of a natural mutation that results in a chimera
Answer:
air
Explanation:
air boleh wujud dalam keadaan gas iaitu wap air, keadaan cecair iaitu air dan pepejal iaitu ais
Answer:
the new cells that arise after cell division are called daughter cells.
