BIOLOGY HIGH SCHOOL

Which of the following tastes may be detected at very low concentration?sweet
umami
bitter
salty

Answers

Answer 1
Answer:

The correct answer is bitter.

People have very strong negative reactions when it comes to a bitter taste. Most of the substances like toxins have bitter taste. The ability of the taste buds to taste the bitter substances shows evolutionary history. The taste has evolved because most of the substances that are harmful to the human beings are bitter in taste. The substances such as alkaloids, drugs, medicines, quinine, caffeine and nicotine have bitter taste. These tastes are not very common to the taste buds so they are detected at very low concentrations.
Answer 2
Answer: The taste which we can detect already at very small concentrations is salty taste.

The reason why we have a special affinity for tasting bitter things. The reason why we can taste bitter things at extremely low concentrations is because potentially dangerous compounds can be bitter and it made evolutionary sense for organisms to adapt to taste bitter things.  

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Which is a density-independent factor limiting population growth

Answers

A density independent factor limiting population growth would be earthquakes because it is not dependent on the size of a specifies or population in a certain area. An earthquake can occur and harm a small population or a big one.

Answer:

volcanic eruption

Explanation:

Alien species often displace native species because alien species _____.

Answers

The answer is they outcompete native species. When the exotic species are being introduce, the species then can grow at a high rate due to lack of predators as well as competitors thus eventually may replace the native species then.

Answer:

Outcompete native species

Explanation:

Gradpoint

explain how the bonding properties of carbon atoms result in the large variety of carbon-based molecules in living things

Answers

Carbon atoms have 4 valence electrons. That allows them to make 4 covalent bonds. That means they can make really big molecules. All the organic molecules have Carbon in them.

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Answers

Answer: a

Explanation:

Processes that increase the density of seawater include evaporation and

Answers

Processes that increase the density of seawater include evaporation and sea ice formation. The density of seawater primarily depends on two factors, temperature and its salinity. When temperature is decreased and salinity is increased, the density increases. Sea ice formation lowers the seawater's temperature, while evaporation increases the salinity.

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Answers

(A) is a series of nerve roots in the lumbar and sacral region.
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