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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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Over a period of several hours, a barometer shows rapidly decreasing air pressure. What type of weather will most likely occur n
marshall27 [118]

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Explanation:

Normally, when the atmosphere changes. Then the temperature either to reduces or increase. The act of the temperature going up and down then creates the condition that makes us have night and the daytime.

This also causes the change in pressure that gets detected by a barometer.

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4 0
3 years ago
What components of the eukaryotic cell were visible in the onion root tip? Which components were not? Why do you think some comp
ruslelena [56]

Looking at the onion root tip under the microscope you can see large, rectangular cells with visible distinct cell walls surrounding it (cells have a more regular shape because of the wall). Inside the cells, you can notice darkly stained nucleus, large vacuoles at the center and sometimes small granules within the cytoplasm. Looking the onion root tip under the microscope is often the way to observe mitosis. Usually, you cannot see organelles such as mitochondria, ribosomes, rough and smooth endoplasmic reticulum, centrioles and Golgi body as they appear translucent and because are too small to be seen under the light microscope (electron microscope required). Also, chloroplasts are not present in an onion cell because it is not a photosynthetic cell.

6 0
3 years ago
What refers to the amount of a substance in a given space
IrinaVladis [17]

Volume? Is that what you mean?

5 0
3 years ago
Which of these is an environmental effect of diffusion?
matrenka [14]
A- Temperature.
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4 0
3 years ago
Why are colonial organisms not truly multicellular?​
Alborosie

Answer:

Colonial Organisms

The difference between a multicellular organism and a colonial organism is that the individual organisms that form a colony or biofilm can, if separated, survive on their own, while cells from a multicellular organism (e.g., liver cells) cannot. This enables the colony to swim towards the light.

Explanation:

All based on research.

3 0
3 years ago
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