Answer:
B. Bacteria can exchange genes for resistance to antibiotics in this way.
Explanation:
Even though conjugation requires cell-to-cell contact, it can occur between distantly related bacteria
Answer:
Explanation:
In endoplasmic reticulum, many folds leads to an increase in surface area for ribosomes to attach which allows for protein synthesis to occur at an efficient rate.
mitochondria has two membrane,
It has an inner membrane which is folded inside the other. The fold create cristae, which is the site for a portion of cellular respiration.
The folds also enables a large surface area that makes chemical process to occur in an efficient way.
Answer:
A. Gas is added to the bladder as the fish's depth increases.
Explanation:
The swim bladder is a gas-filled organ localized in the dorsal region of Osteichthyes (bony fish) that allows them to regulate buoyancy, thus maintaining water depth without swimming. Since the swim bladder localizes in the dorsal region, it also functions as a stabilizing organ. This organ is composed of two sacs whose walls contract and expand in response to water pressure. The swim bladder contains an oval window that enables to adjust buoyancy in order to maintain a constant depth, or to ascend or descend in a wide range of water depths.
The blood is filtered at a high pressure and the kidney selectively reabsorbs any useful materials such as glucose, mineral ions and water. After it has been purified, the blood returns to the circulatory system through the renal vein. The kidneys produce urine and this helps maintain water balance.
