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vredina [299]
3 years ago
8

which specialized structures allow an adult amphibian to live on land and still maintain its internal balance

Biology
1 answer:
Vinvika [58]3 years ago
5 0

The adults live on land for part of the time and breathe both through their skin and with their lungs. Adaptations for land in amphibians include protective skin and eyelids that allow them to adapt to vision outside of the water.
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The gaps of unjoined membrane through which small molecules exit and enter capillaries are called __________.
Dafna1 [17]

Answer:

<h2>A </h2>

Explanation:

1. A channel between two adjacent cells in known as an intercellular cleft.

2. And through these channels many molecules  can easily pass between cells.

3. Importance of Intercellular clefts:

i) It is very important in transportation of fluids and small solutes.  

ii) It contains gap junctions, tight junctions, desmosomes, and adheren proteins and these junctions help in regulate cell communication by signal transduction, surface receptors, or a chemogradient.

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Contrast the approaches of Charles Darwin and Gregor Mendel to the study of populations. What were Darwin’s main discoveries? Wh
Alborosie

Answer:

The elucidation of the mechanisms of biological inheritance and the understanding of how life evolved on Earth, the two important pillars on which a part of current biology supports. The founders of these branches of science, built in very different ways the knowledge they brought to all mankind.

Explanation:

Charles Darwin proposed the theory of biological evolution by natural selection. Define evolution as offspring with modification, the idea that species change over time, give rise to new species and determined a common ancestor. The mechanism he proposed for evolution was natural selection. Since resources are limited in nature, organisms with heritable characteristics that favor survival and sensitive reproduction leave more offspring, which makes the frequency of these characteristics increase over several generations. Natural selection makes populations adapt or become more appropriate to their environment over time. Natural selection depends on the environment and needs inheritable variations.

Meanwhile, Mendel, based on his experiments, formulated three general laws:

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-The descendants of the crossing of the hybrids with each other of the second generation is divided into four parts, three of them inherit the dominant character and one the recessive. This law is known as the law of segregation

-If the two original varieties differ from each other in two or more characters, each of them is transmitted independently of the others. This law is called independent transmission or the independence of the characters.

Darwin's ideas suggested his experiments with rabbits to Galton, but his inspirational capacity is over. Mendel's experiments, in contrast, traced a more fertile path. He had tested his mathematical laws with the pea. When trying to extend Mendel's ideas to other organisms, the scientists found changes that respond to different patterns, frequencies in the progeny that do not respond to the proportions found by the monk, but that have their own logic. Instead of weakening Mendel's model, the modifications were his strongest support. Mendel had founded a methodology that allowed discovering new methods.

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Answer: d.) The element is named after the Latin word for calcium.

Explanation:

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