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MissTica
3 years ago
10

How did Hershey and Chase know that it was the DNA that had infected the bacterial cells in their experiment?

Biology
1 answer:
miskamm [114]3 years ago
7 0

Answer:

In their experiments, Hershey and Chase showed that when bacteriophages, which are composed of DNA and protein, infect bacteria, their DNA enters the host bacterial cell, but most of their protein does not. Hershey and Chase and subsequent discoveries all served to prove that DNA is the hereditary material.

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When tectonic plates slowly push against each other, forces build up and
Naily [24]

Answer:

The movement is caused by the convection currents that roll over in the upper zone of the mantle. This movement in the mantle causes the plates to move slowly across the surface of the Earth.

Explanation:

4 0
3 years ago
Windy weather during summer season is<br>pleasant, why<br>?​
Llana [10]

Answer:

because it cools you off when its too warm and overall gives a sense of calm

5 0
3 years ago
Use the models that you created in Lesson 2, Lab 1 to help you answer the following question.
masha68 [24]
The answer is <span>B. A smaller cell has more surface area than volume.

</span>This is simple mathematics. Let's imagine that cell is spherical.
Now, we have two spheres: one big (with radius r = 5 cm) and one small (with radius r = 2 cm).
The formula for the surface area of the sphere (A) is A = 4 π r².
The formula for the volume of the square is 4/3 π r³.

Now, let's compare two spheres:

Small sphere:                                                  Big sphere:
r = 2 cm                                                            r = 5 cm
A = 4 π 2² = 50.3 cm²                                      A = 4 π 5² = 314.2 cm²<span>
V = 4/3 </span>π 2³ = 33.5 cm³                                   V = 4/3 π 5 ³ = <span>523.6 cm³ 

According to the calculation, the smaller sphere will have more surface area than volume. This can be extrapolated to all shapes, not only spheres, so the </span><span>smaller cell has more surface area than volume.</span>
3 0
3 years ago
Discussing the surprisingly high percentage of cancers caused by secondhand smoke would most likely be an example of which atten
svp [43]

Answer:

The correct answer is: Shocking or Horrifying the listeners.

Explanation:

  • Attention getting techniques can be defined as the sentences or information used in speeches during a verbal communication that will draw the attention of all the listeners towards the speaker.
  • In the given question, when speaker talks about the incidence of cancer in the second hand smokers who are also called the passive smokers, it alarms the listeners.
  • This is because according to the speaker's statement the people who are not addicted to smoking possess substantial risk of developing cancer due to passive smoking.
  • This raises curiosity and alarm among the listeners and they are keen and eager to get more update on the the subject of cancer development.
  • This way the speaker can prove himself to be a good orator.
8 0
3 years ago
Need Help with these questions ASAP!!
Irina-Kira [14]

Answer:

6. Unsure but I think D. the one below the apex predator's prey

7. A. True

8. B. False

9. Unsure but I think C. the crab moves to less salty water

10. D. Among different species

Explanation:

4 0
3 years ago
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