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4 years ago

Dolphins can be awake and asleep at the same time because _____.

1 answer:

4 0

Dolphins can be awake and asleep at the same time because "one half of their brain 'sleeps' while the other stays awake." This is called Unihemispheric slow-wave sleep (USWS). Dolphins sleep like this in order to stay alive. If they were completely unconscious they would drown (they still need to come up for air occasionally like whales) or killed by a predator.

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To carry out their life processes, people need _____.

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The answer is Energy

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4 years ago

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Ilya [14]

Answer:

The organisms homeostasis

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A swollen can of chicken soup is examined by public health laboratory and found to contain large numbers of gram negative h2s ba

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Possible contaminate will be Proteus or Salmonella. To differentiate the two genera urease test can be accomplished. However, urease test, Proteus will produce a positive test result.

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3 years ago

Match these items. 1. obtain food from non-living organic material taxis 2. mutually positive arrangement between species radiol

ElenaW [278]

Answer:

1. obtain food from non-living organic material (saprophyte)

2. mutually positive arrangement between species (symbiosis)

3. response to a chemical

(chemotaxis)

4. response to light (phototaxis)

5. member of phylum Foraminifera (radiolarian)

6. organism's response to a stimulus (taxis)

7. cell with membrane-bound structures (eukaryote)

8. organism in which a parasite is growing (host)

9. sexual reproduction in some protozoans (conjugation)

Explanation:

The items duely matched to its meaning above.

All the matches corresponds with each other, with small explaination of what each does.

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3 years ago

In science, models can show a process that’s difficult to observe directly. Using the style of the model shown, draw the process

Illusion [34]

Answer:

The model is in the annex

Explanation:

According to the model presented below, after the transition the RNA is in a state called pre-mRNA where we can see the presence of exons and introns. Introns are not sequences of nitrogenous bases that can participate in the production of proteins and therefore are removed from the RNA molecule through a process called splicing. Once the introns are removed, the mRNA is ready and leaves the nucleus towards the cytoplasm, by a process called exportation. Reaching the cytoplasm, the mRNA in association with the tRNA and the ribosomes will give rise to a polypeptide chain, in a process called translation, where the nitrogenous bases are transformed into amino acids.

The polypeptide chain has a linear sequence of amino acids. This chain will undergo several folds in a process called folding, where it will form a three-dimensional structure, the protein.

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3 years ago

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