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Alina [70]
3 years ago
12

Plz hurry i need this answer

Biology
1 answer:
lilavasa [31]3 years ago
5 0

Answer:

<em>The correct option is A) cadmium dosage</em>

Explanation:

In an experiment, an independent variable can be described as a factor which is changed naturally or by us to see its effect on the dependent variable. The dependent variable is the variable which is under study and depends on the independent variable.

In the following experiment, we are checking the effect of different dosages of cadmium on the surviving ability of tadpoles. Hence, cadmium dosage is the independent variable. Tadpole population is the dependent variable.

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Are crayfish arthropods?
Bezzdna [24]

Answer:No

Explanation:

Because they are closely related to the lobster

4 0
3 years ago
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The viral pathogen that causes cold sores can remain inactive in the body for a long time between disease outbreaks. How is this
Serhud [2]

This disease is classified as a latent disease.

<h3>Classification of diseases</h3>

Latent disease is a classification of disease whereby the infectious agent remains inert in the body of its host between episodes of recurrent diseases.

Examples of viral pathogens that causes latent diseases include:

  • <em>Herpes simplex, </em>

  • <em>Varicella zoster, </em>

  • <em>Epstein-Barr</em>,

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The infection caused by the listed viral pathogens exhibit a latent disease phase whereby there is no noticeable symptoms of infection.

Learn more about latent disease here:

brainly.com/question/26971909

3 0
2 years ago
An organism's genome is analyzed and found to contain 18% guanine. What percentage of that organism's DNA is adenine?
Oxana [17]

Answer:

32%

Explanation:

According to Chargaff in his complementary base pairing rule, he stated that the proportion of purine and pyrimidine bases is equal to 100%

That is, A + T + G + C = 100%

Where A=T and G=C i.e the proportion of each base pair is equal.

Hence, if the Guanine content is 18%, it means the Cytosine content of that DNA molecule must also be 18%. Therefore:

18 + 18 + A + T = 100

A + T = 100 - 36

A + T = 64

If the sum proportion of Adenine and Thymine is 64% and each must contain equal proportions, A or T = 64/2 = 32

Hence, Adenine contains 32%, likewise Thymine.

6 0
3 years ago
Which best describes an experiment?
AleksAgata [21]
A: In a lab a scientist measures the height of roses that received different fertilizers.

An experiment must include variables. The other three are just measurements, but since the scientist is varying the types of fertilizers used, this better describes an experiment. It is also done in a controlled environment (in a lab) which helps to eliminate other uncertainties.
8 0
3 years ago
What movements do the quadriceps femoris muscles perform?
Anna71 [15]

Answer:

a. Extension of the lower leg

Explanation: is correct

6 0
3 years ago
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