Can someone help me find the answer to this?
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Which homeostatic process moves particles against a concentration gradient?a. dynamic equilibriumb. passive transportc. osmosisd. active transport
There is an algal bloom in a lake in a populated area. As the leading scientist for the water department, what is the most important thing to do, based on scientific evidence about such blooms?
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The correct option is mRNA......................................................
b. communicating results
c. testing the hypothesis
d. creating a hypothesis
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Answer: a. observing
Explanation:
Observation in research can be define as the visual examination of the outcomes of the experimental procedures or examination of naturally occurring process. This is important for framing the results of the experiment. The observation is particularly recorded in written notes, and photographs.
According to the situation given, he missed the observation in the scientific investigation. He must posses the proof of his observation before proposing the conclusion to his classmates.
a. observing is the answer
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Answer:
Largest to smallest: cell nucleus > mitochondrion > ribosome > protein > amino acid > water molecule > proton
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Answer:
Eels are just elongated fish. Their ancestors looked like tarpon fish. Their fins were a disadvantage in tight spaces, streamlined creatures literally filled a niche. They are more related to the salmon than the pythons.
There is fossil evidence to suggest that pythons and all the other snakes may have evolved from burrowing lizards, such as the varanids. Which are more related to the geckos than to fish.
Explanation:
The confusion can be made because eeil genus name-Anguilla, comes from anguis, which on Latin means serpent.
Final answer:
Pythons' vestigial leg structures and snakes' similar DNA sequences with geckos both point to a common ancestor and evolution over time. These observations support the theory of evolution, demonstrating that while some traits may be lost over time, like legs in snakes, others are retained.
Explanation:
Vestigial structures and DNA sequences are two types of evidence that evolutionists use to support the theory of evolution. In this case, pythons have been observed to have vestigial leg bones which implies that their ancestors might have had functional legs. On the other hand, the fact that snakes have more DNA sequences in common with four-legged geckos than with legless eels could also be interpreted as evidence of a common ancestor.
Snakes and geckos, despite their very different appearances, both belong to the clade Squamata, which also includes lizards. Their DNA sequences suggest that these creatures have shared ancestry, supporting the evolutionary theory. Similarly, the vestigial structures in pythons further back up this view. Vestigial structures are remnants from an organism's ancestry. The leg bones in pythons could well be residual parts left over from their legged ancestors, as snakes are believed to have descended from lizards.
In a nutshell, both these observations tell us the same story: that current species have evolved from common ancestors in the past. Over time, some traits (like legs in the case of snakes) might have become useless and got eliminated through natural selection, while others were retained. The end result is the rich biodiversity we see around us today.
Learn more about Evolution here:
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(1) A limb is lost when two marine organisms fight.
(2) A puppy learns to beg for food by watching
an older dog perform tricks.
(3) A gene is inserted into a bacterium, allowing
the organism to produce insulin.
(4) A random mutation causes the immediate
death of a microbe.