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Korolek [52]
2 years ago
8

In the Hershey-chase experiment, what happened to the bacteria that had been infected by viruses that had radioactive DNA, and t

o the bacteria that had been infected with viruses that had been marked with radioactive proteins?
Biology
1 answer:
cestrela7 [59]2 years ago
3 0

Answer:

The bacteria infected with viruses that had radioactive DNA had become radioactive. The bacteria that had been infected with viruses marked with radioactive proteins were not radioactive.

Explanation:

The rest of the answers:

1.2

2.3

3.2

4.1

5.b

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Given what you know about the endosymbiotic theory, which region of the chloroplast below would you expect to be derived from th
san4es73 [151]

Answer:

Photosynthetic lamellae

Explanation:

The cyanobacteria were the first successful photosynthetic cells present on the Earth which were able to convert the light energy into the chemical energy.

The endosymbiosis theory suggested that these cyanobacteria were engulfed by the eukaryotes and the cyanobacteria get transformed into the chloroplast.  

The region of the chloroplast that was formed in the cyanobacteria before the endosymbiosis happened was the photosynthetic lamellae which contained the chlorophyll molecule and thus is the correct answer.

Thus, Photosynthetic lamellae are the correct answer.

4 0
2 years ago
Instrument for examining the uterus
podryga [215]

Answer:

speculum

Explanation:

6 0
2 years ago
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Which sample is a pure substance?
dmitriy555 [2]

Answer:

zinc oxide is a pure substance

3 0
3 years ago
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ANSWER AS MANY AS YOU CAN PLEASE!
Firlakuza [10]

Answer:

1. Alzheimer's disease is when you begin to forget things and have memory loss.

2. It is inherited in an autosomal dominant pattern and if one of your parents has Alzheimer's you or your siblings could get it.

3. Single gene inheritance

Explanation:

8 0
2 years ago
How many food calories can a human burn up in an hour by exercising at this rate? (remember that only 20.0 % of the food energy
blsea [12.9K]

Human can produce a maximum mechanical power of 1/3 hp (horse-power).

Horse power is a unit of power, it equals 746 watt (watt is also a power unit, known to be equal to a joule per second)


So:

1 ph = 746 watt = 746 J/s

1/3 ph = 248.6 J/s

we're looking for the calories, so

1 joule = 0.239006 calories


So human produce a maximum mechanical power of:

248.6 J/s = 82.88 calories per second.


We're looking for the number of calories consumed in three hours, so:

82.88 cal/s = 82.88 cal/s * 3600 s * 3 = 895200 calories = 895.2 kilocalories (food calories).


The number of food calories is 895.2 food calories

4 0
3 years ago
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