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Vikentia [17]
3 years ago
11

Describe a feedback loop?

Biology
1 answer:
satela [25.4K]3 years ago
6 0

Answer:

A feedback loop is a biological occurrence where the output of a system amplifies the system (positive feedback) or inhibits the system (negative feedback).

Explanation:

Example, during blood clotting, a cascade of enzymic proteins acitvates each other, leading to the formation of fibrin clot that prevents further blood loss.

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Which statements represent convection? Check all that apply.
ki77a [65]

<u>Answer:</u>

<em>The movement of air in a hot air balloon makes it move up into the sky. </em>

<u>Explanation:</u>

Convection takes place in fluids. Hot fluids are less dense than cold fluids and the difference in the densities determine the direction of flow of fluids. <em>Less dense fluid moves up and the denser fluid take its place.  </em>

Thus hot air rises up and cold air fills its place. The hot air balloon contains burner which <em>pumps hot air into the balloon.</em>

Thus the air inside the balloon will be hotter than the air outside the balloon. <em>Thus the hot air rises up carrying the balloon forward. </em>

7 0
3 years ago
Read 2 more answers
Which is correctly paired?
Pani-rosa [81]

Answer:

The correct option is E: Limulus - Book Lungs

Explanation:

The structure of a book lung is made so as to maximize the efficiency of gaseous exchange in arachnids. An externally located structure, book gills, aids in this process. Limulus are horseshoe crabs that still makes use of book gills. Its a marine creature (an arthopod, to be specific) that has 5 pairs of book gills on its body.

8 0
3 years ago
Which of the following examples describes convergent evolution?
topjm [15]

Answer: Option E (B and D are the only examples.

Mediterranean ecosystem with hot dry summer and fire can be found on various continents across the globe. Plants in these ecosystem have evolve similar adaptations to survive these circumstances.

Echidnas are egg laying mammals that live in Australia and new Guinea. They are sometimes known as spiny anteaters since they are covered in spines and mostly eat ants and termites. As such they resemble south American anteaters and hedgehogs but are not closely related to them. Instead echidnas descended from an aquatic platypus like ancestor.

Explanation:

Divergent evolution is a process where different organisms with different anscetors evolve independently and develop similar traits due to their adaptation to similar environment.

Another example is the similarities between hummingbird and hummingbird moth, the evolved from different ancestors and yet posses similar characteristics.

6 0
3 years ago
At the beginning of DNA replication, what two processes "unzip" the two strands of a DNA molecule?
vagabundo [1.1K]
Replication from formation and separation of the strands
8 0
3 years ago
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6. Which muscles allow you to squeeze the ribs together<br> when you exhale?
KengaRu [80]

Answer:

intercostal muscles

7 0
4 years ago
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