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svetlana [45]
3 years ago
11

Why do scientists conduct DNA examination in order to be able to classify the frogs?

Biology
1 answer:
balu736 [363]3 years ago
3 0

Scientists conduct DNA examination in order to be able to classify the frogs as DNA examination helps them to classify the frogs according to species and genus . Different genus have around 2 percent difference in DNA sequence.

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A biology class is studying the effect of temperature on the amount of growth of duckweed in an aquarium. What type of data will
iragen [17]

Answer:

\boxed {\boxed {\sf They \ will \ gather \ quantitative \ data \ using \ a \  thermometer \ and \ a \ balance}}

Explanation:

First, let's identify the tools needed.

Since the biology class is studying the temperature, they will likely need a <u>thermometer</u>. Also, they are gathering information about the growth of the plants. This could use a <u>balance </u>of a meterstick.

Next, recall the difference between quantitative and qualitative data.

  • <u>Quantitative</u>: Measurable and numerical results found using scientific instruments/devices
  • <u>Qualitative</u>: Data found using the senses, such as descriptions and diagrams.

Since the class is measuring temperature and growth using tools, it must be quantitative data.

We can eliminate choices A and B, because they claim the class will gather qualitative data. Then, we can eliminate choice D, because a beaker and timer won't help with temperature and growth. That leaves choice C as the correct answer.

6 0
3 years ago
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How does smooth muscle appear different at the cellular level
lara [203]

Explanation:

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In the images I added you can see how smooth muscle looks when observed in a microscope, wider in the middle and elongated at the ends, and the staircase arrangement.

I hope you find this information useful and interesting! Good luck!

3 0
3 years ago
During strenuous exercise, tv plateaus at about 60% of vc but minute ventilation continues to increase. explain how that would o
elena-14-01-66 [18.8K]
The body is made to adapt; so it tries to adapt to its current environment. The breathing rate increases to help add more oxygen into the system, slowly boosting endurance as a survival mechanism from ages ago when we actually had to outrun predators. It was likely more efficient back then.
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Answer:

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A positive chemotaxis occurs when the movement is toward the direction of the chemical stimuli.

A negative chemotaxis is when the movement is towards the opposite direction  of the stimuli.

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I decide what goes in and out of the nucleus. I protect the genetic material. What am I?
just olya [345]
The answer is the nuclear envelope
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