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Komok
1 month ago
6

Equipment required: A hair dryer, two glass beakers, glasses or glass jars, two thermometers, and enough water to fill one of th

e beakers or glasses.
Fill one beaker with tap water at room temperature and leave the other one empty. Place a thermometer in each beaker. Set the two beakers side-by-side and record the temperatures in each beaker. Using the hair dryer, blow hot air evenly for several minutes on the two beakers and monitor the temperatures in each beaker. How do the two beakers respond to the hot air?
Biology
1 answer:
vlada-n [2.5K]1 month ago
6 0

Response:

The temperature in the beaker filled with water should fluctuate minimally in contrast to the beaker containing only air, illustrating that water's heat capacity helps to stabilize temperature variations in the air.

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In a sample of 2,400 people, 1,482 were found to have the dominant (taster) phenotype. Assuming that the population is in Hardy-
Tresset [2298]

Answer:

1128.

Explanation:

The phenotype for dominant tasters is 1482.

The phenotype for recessive tasters = 2400 – 1482 = 918.

Recessive phenotypes = 2400 – 1482 = 918.

The frequency of the recessive phenotype = q² = 918 / 2400 = 0.38.

The frequency of the recessive allele q = √0.38 = 0.62.

For the dominant allele frequency, p = 1-q = 1- 0.62 = 0.38.

The heterozygous frequency =  2pq = 2 × 0.38 × 0.62 = 0.47.

The number of heterozygous individuals within the population = 0.47 × 2400 = 1128.

Thus, the result is 1128.

5 0
3 months ago
Chronic overfishing disrupts a coral reef ecosystem, making the reef more susceptible to bleaching and resulting in die-off even
vlada-n [2515]

Answer:

The word that is missing is Depletion.

 

Explanation:

Depletion of coral reefs can happen as a result of excessive fishing. The demand for fish increases alongside the growing population rate.

One consequence of unsustainable and unmanaged fishing is that certain fish species may be overfished, potentially leading to extinction.

This creates an ecological disruption, which hastens the decline of the Coral Reef.

Cheers!

3 0
2 months ago
Which statement best describes a keystone species?
Tresset [2298]

The right answer is option d as its absence would impact many organisms in the ecosystem.

Keystone species are crucial for the ecosystem's health. If such a species were to disappear from an ecosystem, it would disrupt the ecosystem's functioning, leading to significant consequences. Therefore, keystone species are vital for the ecosystem's survival.

8 0
2 months ago
Read 2 more answers
Muscles are made of thread-like proteins called myofilaments. What instructs muscle cells to make myofilaments?
vlada-n [2515]

Answer:

DNA

Explanation:

DNA serves as the cell's genetic material, often referred to as the molecule of life. DNA is deemed the molecule of life since it contains the instructions necessary for the cell to produce various proteins that facilitate the organism's survival by performing distinct functions.

Regarding the question, it is DNA that encodes the instructions for myofilaments, which consist of actin and myosin. Through transcription, DNA forms the mRNA molecule, which then undergoes translation to produce amino acids and ultimately proteins.

Thus, DNA is the accurate response.

3 0
1 month ago
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