1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Nadya [2.5K]
1 year ago
12

The metamorphosis of a tadpole to an adult frog involves a thorough reconstruction of the animal's body. All of the structural a

nd physiological changes must be complete or the frog will not survive this transformation. Which type of regulation would ensure that the animal completed its transformation?
A. positive feedback
B. negative feedback
C. feedback inhibition
D. enzymatic catalysis
Biology
1 answer:
alexira [117]1 year ago
3 0

The metamorphosis of a tadpole to an adult frog involves a thorough reconstruction of the animal's body. Positive feedback regulation would ensure that the animal completed its transformation.

Positive feedback regulation of prothoracic hormone secretion by ecdysteroids is the mechanism that determines the timing of metamorphosis.

Metamorphosis is the biological process by which an animal develops physically, including birth and hatching, and which involves marked and relatively rapid changes in an animal's body structure due to cell growth and differentiation.

Some insects, fish, amphibians, mollusks, crustaceans, cnidarians, echinoderms, and tunicates undergo metamorphosis, often with changes in diet and behavior.

In case of frogs, and toads, forelimbs are formed under the gill pouch, and the hind limbs are visible after a few days. This is usually followed by a longer phase in which the tadpoles are fed a vegetarian diet.

Tadpoles use a relatively long spiral intestine to digest this food. Recent studies suggest that tadpoles do not have a balanced homeostatic feedback control system until early stages of metamorphosis.

At this point, their long intestine shortens and they prefer insects.

Learn more about Positive feedback regulation here : brainly.com/question/14801112

#SPJ4

You might be interested in
The point of a reprimand should be to _______ an animal.
Gnesinka [82]
I believe it would be 'D' because reprimand means to rebuke something. 
3 0
3 years ago
The __________ of the heart rests on the diaphragm, and from its __________, the great vessels emerge (hint: not chambers)
Sergeu [11.5K]
The answer is apex and base. To simplify, the apex of the heart rests on the diaphragm and from its base, the great vessels emerge. In addition, blood vessels that are nearer to the pumping heart and must enlarge to endure pressure variations are named elastic arteries and foramen ovale permits blood to pass from the right to the left atrium, therefore avoiding to pass the fetal lungs. 
4 0
3 years ago
Why is the caloric value of some sugar alcohols less than 4 kcal/g? a. They cannot be transported into the mitochondria. b. None
avanturin [10]

Answer:

Option-C

Explanation:

The sugar alcohols are the carbohydrates which are neither considered sugars nor alcohols but they partially resemble the structure of both of these sugars and alcohol.

The sugar alcohols are naturally present in the vegetables and fruits but they are also artificially synthesised like xylitol, lactitol, mannitol and others.

They are considered the alternative from of sugar but they provide less energy as compared to carbohydrates like they provide about 0-3 kcal per gram whereas sugar provides 4 kcal per gram.

This difference is due to the reason that they are not completely absorbed by the human body and also they are incompletely metabolized therefore provide less energy.

Thus, Option-C is the correct answer.

5 0
3 years ago
3)
lisabon 2012 [21]

Answer:

A) climate change...........

4 0
3 years ago
The mating season for white-tailed deer is just two to three months long. Male deer grow antlers before each breeding season. Th
Aleks04 [339]

Answer:

They use their antlers to fight and establish dominance.

Explanation:

8 0
3 years ago
Other questions:
  • Ash from a volcanic eruption decreases the amount of available solar energy for a region. How will a decrease in available sunli
    5·2 answers
  • Describe the activity of chromosomes in each stage of mitosis
    15·1 answer
  • What does it mean to be predisposed to getting cancer? if you inherit a mutated cell cycle gene, does that automatically mean th
    5·1 answer
  • A student uses a balance to determine the mass of a feather. Which is most likely to be the correct measurement?
    13·2 answers
  • What controls what goes in and out of the cell?
    11·1 answer
  • For a species to be on the endangered list there must be ____ organisms of the species left.
    6·1 answer
  • Please answer these questions using this video: https://youtu.be/kuFODX4VuAw
    7·1 answer
  • Which foods would contain mostly unsaturated fats
    10·1 answer
  • Does venueles carry bright red color?
    10·2 answers
  • I attached the question ​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!