The trees in the northern hemisphere will be very negatively effected by the declining numbers of the migrating songbirds.
The reason for that is that the songbirds are the predators of the caterpillars. With the declining number of the songbirds, the caterpillars will grow in numbers.
The caterpillars are feeding on the leaves of the trees. As the numbers of the caterpillars grow, they will eat more and more leaves from the trees, thus making huge problems for the trees because they will not be able to properly perform the photosynthesis which is crucial for their survival. The trees will start to get diseased and lot of forests in the Northern Hemisphere will be destroyed.
b. False
Answer:
False
Explanation:
People suffering from HIV/AIDS face taboos as they are considered as someone suffering from a non treatable disease which may spread if they are in contact with the affected person. Though there are several awareness campaign, which are run (by government, private agencies/NGOs) just to make people aware that this disease is not communicable but yet people consider it as communicable disease. Hence, some one who is having HIV/AIDS is not at all treated as an uninfected individual in society.
Hence, the given statement is false.
Answer:
A nonconformity occurs where layers of sedimentary rock are deposited over eroded layers of igneous or metamorphic rocks.
Explanation:
percent more to produce than the old fertilizer but has better results: The
same land now produces 25 percent more crops each year.
Which statement best describes one way the farm will be affected by using
this new fertilizer?
A. The farm's opportunity cost for using fertilizer will decrease.
B. The farm's marginal cost for fertilizer will decrease.
C. The farm's marginal cost for fertilizer will increase.
D. The farm's opportunity cost for using fertilizer will increase.
Answer:
C. The farm's marginal cost for fertilizer will increase.
Explanation:
The statements 'histamine binds extracellularly to the H1 receptor', 'when histamine binds to the H1 receptor, the receptor undergoes a conformation change and binds the inactive G protein', 'once the G protein is active, it binds to the enzyme phospholipase C, activating it', and 'histamine is likely hydrophilic' are TRUE.
Histamine is a molecule released during inflammatory and allergic responses.
This molecule (histamine) binds to the G-protein coupled histamine (H1) receptor. This binding triggers a conformational change in the three-dimensional (3D) shape of the G-protein coupled H1 receptor.
Subsequently, the heterodimeric G protein is activated by GTP binding. The G-proteināGTP complex then dissociates from the G-protein coupled H1 receptor and interacts with phospholipase C, thereby activating a transduction signaling pathway.
Finally, the G protein accelerates the hydrolysis of GTP to GDP and thus terminates the transduced signal.
In conclusion, the statements 'histamine binds extracellularly to the H1 receptor', 'when histamine binds to the H1 receptor, the receptor undergoes a conformation change and binds the inactive G protein', 'once the G protein is active, it binds to the enzyme phospholipase C, activating it', and 'histamine is likely hydrophilic' are TRUE.
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Answer:
-Histamine binds extracellularly to the H1 receptor.
-When histamine binds to the H1 receptor. the receptor undergoes a conformation change and binds the inactive G protein.
-Once the G protein is active, it binds to the enzyme phospholipase C, activating it.
-Histamine is likely hydrophilic.
When histamine encounters a target cell, it binds extracellularly to the H1 receptor, causing a change in the shape of the receptor. This change in shape allows the G protein to bind to the H1 receptor, causing a GTP molecule to displace a GDP molecule and activating the G protein. The active G protein dissociates from the H1 receptor and binds to the enzyme phospholipase C, activating it. The active phospholipase C triggers a cellular response. The G protein then functions as a GTPase and hydrolyzes the GTP to GDP. The G protein dissociates from the enzyme and is inactive again and ready for reuse.
Explanation: