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bezimeni [28]
2 years ago
11

Design your own scenario related to Bacteria or Viruses. Identify the independent and dependent variables.

Biology
1 answer:
timurjin [86]2 years ago
5 0

Answer:

An experiment where an antibiotic is tested against bacteria. The antibiotic can vary in its concentration for example, different amounts are applied to a sample of bacteria to see if it is affected by the action of the antibiotic and if so, in what concentration. So, the independent variable is the concentration of antibiotic while the dependent variable is the survival (or not) of the bacteria.

Explanation:

An independent variable is a variable that represents a quantity that the scientist modifies in an experiment. A dependent variable represents a quantity whose value depends on how the independent variable is modified. This is the variable being studied and measured.

So, an example of this applied to bacteria or viruses could be:

<u>An experiment where an antibiotic is tested against bacteria</u>. The antibiotic can vary in its concentration, different amounts are applied to a sample of bacteria to see if it is affected by the action of the antibiotic and if so, in what concentration. So, the independent variable is the concentration of antibiotic while the dependent variable is the survival (or not) of the bacteria.

To complete the experiment, an antibiotic whose effect is already known can be used as a positive control. That is, it is already known to kill the bacteria. And as a negative control you can simply use water, which has no effect and is known not to kill the bacteria. In this way, we validate the results and make sure that there is not something else that is affecting the bacteria and that only the antibiotic being studied has an influence.

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The total number of organisms an ecosystem can support is its tolerance range.
Ostrovityanka [42]

Answer:

False

Explanation:

The <u>carrying capacity</u> of an ecosystem is the total number of creatures that it can sustain.

6 0
2 years ago
What three different genotypes are possible for an individual in this population
Nimfa-mama [501]

Answer:

With alleles 'A' and 'a' there are three possible genotypes AA, Aa and aa

Explanation:

Pls mark as brainliest answer

8 0
3 years ago
Please I need help with questions 27-29 and it’s very hard and I’m struggling with it and if you need to see the picture big the
svp [43]
27 is d (4)
28 is a (1)
29 is d(4)
5 0
3 years ago
In garden pea plants, purple flowers (P) are dominant to white flowers (p), and full pod shape (F) is dominant to constricted po
kifflom [539]

Answer:

The phenotypes are as follows

Purple, full- 9

Purple, constricted- 3

White, full- 3

White, constricted- 1

Genotype of parents are PpFf, each produce the following gametes: PF, Pf, pF and pf.

Explanation:

This is a dihybrid cross involving two distinct genes. One coding for flower color and the other for pod shape. The allele for purple color (P) is dominant over the allele for white color (p) while the allele for full pod (F) is dominant over the allele for constricted pod (f).

In a cross between two heterozygote parents i.e. PpFf × PpFf, each parent will produce the following gametes: PF, Pf, pF and pf. Using these gametes in a punnet square (see attached image) the following 16 offsprings will be produced in a phenotypic ratio: 9:3:3:1

Purple color, full pod- 9

Purple color, constricted pod- 3

White flower, full pod- 3

White flower, constricted pod- 1

7 0
3 years ago
When assisting a child with ventilation:
Zolol [24]
Hello There!

Based on my First Aid classes the answer is D. All of the above.
If someone turns unconscious, you'd have to perform CPR and call an emergency service as soon as possible.

Hope This Helps You!
Good Luck :) 

- Hannah ❤
7 0
3 years ago
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