Chase and Hershey conducted experiments in 1952, using bacteriophages that revealed DNA, not protein, was the genetic material.
The experiments that revealed protein was not the genetic material were conducted by Martha Chase and Alfred Hershey in 1952. They were studying a bacteriophage, a virus that infects bacteria, which has two main structures: a protein coat known as the capsid, and a nucleic acid core that contains either DNA or RNA.
Hershey and Chase used radioactive markers to label the protein coat and DNA of the bacteriophage, respectively. Through their experiments, Hershey and Chase discovered that only the DNA entered the host bacteria upon bacteriophage infection, suggesting that DNA, not protein, is the genetic material. Their work was instrumental in establishing DNA as the molecule responsible for heredity.
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b. The undergrowth of rainforests is choked by weeds and plants.
c. Rainforests are characterized by high levels of rainfall.
d. Not all rainforests are tropical rainforests.
Rainforests are responsible for most global oxygen turnover is not true concerning the rainforests.
Further Explanation:
Rainforests are dense jungle and considerably tall. They are referred to as rainforest because every year, high rainfall occurs in these areas. The climate in these forests is very humid and hot, so the plant and animal exist in these areas and are adapted to this environment. The normal temperature of these areas is 70 degree Celcius – 85 degree Celcius-. Many household items are obtained from these forests. Most of South Africa and western Africa has the largest rainforest. In India and Australia, smaller rainforests are present.
Rainforest provides numerous benefits such as maintain the climate, greenhouse effect and provide space for animals and plants. Also, they produce food and medicine for many organisms. They are not responsible for providing global oxygen because plant present in humid areas takes a higher amount of oxygen to fee vegetation.
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Answer Details:
Grade: High School
Subjects: Biology
Topic: Rainforest
Keywords:
Rainforest, South-Africa, households, climate, greenhouse, organism, largest, global oxygen, areas, Australia, climate, greenhouse effect.
Rainforests have a unique ecological structure where the dense canopy of trees filters out much of the sunlight, leading to limited light penetration on the forest floor. The correct answer is b. The undergrowth of rainforests is choked by weeds and plants.
As a result, the undergrowth of rainforests typically has limited vegetation due to the lack of sufficient light, rather than being choked by weeds and plants. The majority of plant life and diversity in rainforests is concentrated in the upper layers of the forest, such as the canopy and understory.
Rainforests are characterized by a dense canopy formed by tall trees that grow close together and have large, spreading branches. These trees create a thick layer of foliage that blocks much of the sunlight from reaching the forest floor. Consequently, the amount of available light in the understory, the lower layer of the forest, is significantly reduced.
Therefore, the correct answer is b. The undergrowth of rainforests is choked by weeds and plants.
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B. gigameter
C.kilometer
D. nanometer
Answer:
c) kilometer
Explanation:
took the edg 2020 test :)
Answer:
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Explanation:
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