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arlik [135]
3 years ago
10

Why is a control group important in a scientific experiment?

Biology
1 answer:
Alisiya [41]3 years ago
7 0

Explanation:

because it allows you to eliminate or isolate variable/ it allows the experiment to minimize the changes in all the variables except the one being test.

I'm not gonna choose bc I'm not 100% sure either so read what's above, think it over and choose wisely

hope I helped a little and good luck :)

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True or false:
Mnenie [13.5K]

Answer:

true.

Explanation:

all the somatic cells of an organism have same number of chromosomes while gametes are haploid and have half number of chromosomes. so gametes are different from somatic cells.

3 0
2 years ago
In your own words, what was the purpose of the field study?
Lerok [7]

Answer:

conducting research to observe things in their natural habitat.

Explanation:

for example if someone is studying a certain culture, they would study the peoples culture, folklore, ways of living, and would interview them.

5 0
3 years ago
When washing the dishes, you most likely used an animal from the _____ phylum. Porifera, Cnidaria, Nematoda, or Mollusca
7nadin3 [17]
I believe it is Mollusca 

7 0
3 years ago
Read 2 more answers
Areas of the Earth near the equator receive large amounts of solar energy. How does this lead to increased rainfall?
pickupchik [31]

Answer:

D

Explanation:

The heat will make water evaporate at a higher rate thus causing more rain

6 0
3 years ago
One g of fecal matter was suspended in 99 ml saline solution (tube 1). After mixing gently but thoroughly, one ml from tube 1 wa
malfutka [58]

Answer: the cfu/g Gram-negative bacteria in the fecal sample is C = 3.0 × 10^3

Explanation:

We know that; Gram negative bacteria looks  pale reddish in color under a light microscope from Gram staining.

therefore

There are 30 red bacterial colonies counted.

1 mL of from tube 1 was removed and added to tube with 99 mL saline (tube 2) dilution is 1/100.

transferred volume  into the plate is 1 mL.

Now, we have to determine the cfu/g Gram-negative bacteria in the fecal sample

Formula to calculate CFU/g bacteria in fecal sample is expressed as;

C = n/(s×d )

where C is concentration (CFU/g) , n is number of colonies , s is volume transferred to plate , d is dilution factor.

so we substitute

C = 30 / ((1/100) × 1)

C = 30 / 0.01

C = 3000

C = 3.0 × 10^3

THERFERE, the cfu/g Gram-negative bacteria in the fecal sample is C = 3.0 × 10^3

3 0
3 years ago
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