Answer:
Gas exchange occurs at the alveoli in the lungs and takes place by diffusion. The alveoli are surrounded by capillaries so oxygen and carbon dioxide diffuse between the air in the alveoli and the blood in the capillaries
Explanation:
Answer:
A swamp is a wetland that is forested. Swamps are considered to be transition zones because both land and water play a role in creating this environment. Many swamps occur along large rivers where they are critically dependent upon natural water level fluctuations. Other swamps occur on the shores of large lakes.
Answer:Negative feedback is a type of regulation in biological systems in which the end product of a process in turn reduces the stimulus of that same process.Sometimes referred to as a “negative feedback loop”, negative feedback occurs when the product of a pathway turns the biochemical pathway off.
Explanation:
Answer:
The correct answer is B) binds to the complementary sequence of target mRNAs
Explanation:
Double stranded RNA can be used to block the expression of target mRNAs.
At first the introduced double stranded RNA is being separated into single stranded RNAs .One of the Single stranded RNA is degraded.
The remaining Single stranded RNA binds to the target mRNA by complementary base pairing and blocks the expression of that single stranded RNA.
