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german
2 years ago
15

Read the scenario.

Biology
1 answer:
sergeinik [125]2 years ago
8 0

Factors that must be kept constant in the experiment to obtain valid results are option (c) i.e, type of antibiotic, nutrient agar, and temperature.

<h3>what are antibiotics?</h3>

A particular class of antimicrobial agents that works against bacteria is an antibiotic. Antibiotic drugs are frequently employed in the treatment and prevention of bacterial infections because they are the most effective type of antibacterial agent for doing so. Bacteria may be killed or have their growth suppressed.

They could harm the bacterial cell directly by attacking the cell wall. These cells can no longer do additional harm to the body since the bacteria cannot attack it. Other antibacterials, such as tetracycline and erythromycin, prevent the germs from multiplying or growing.

Antibiotics limit bacterial growth and replication by interfering with the bacterial cell wall. Because many types of bacteria have cell walls but human cells do not, antibiotics can kill bacteria while sparing human cells.

To know more about antibiotics refer to:  brainly.com/question/10868637

#SPJ1

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Mendel used over 28,000 pea plants in his experiment. How does this large
IgorC [24]

Answer with Explanation:

The large sample size allowed Gregor Mendel to make comparisons quantitatively. The <em>"margin of error"</em> is narrower and it allowed him to<em><u> detect statistically significant results</u></em> through its statistical power.<em> Large sample sizes have a greater statistical power.</em> However, it takes a lot of t<em>ime, effort and money.</em> Mendel was very persistent and had the driving force. This allowed him to develop the<em> "Three Principles of Inheritance." </em>

A smaller sample size doesn't give a significant difference because the samples are quite random. This has a<em> tendency to mask the result.</em>

3 0
2 years ago
How do you write the phenotype for two heterozygous purple corn kernels
olga55 [171]
75% of the kernels born will be Purple, the dominant gene. And, 25% will be the other color. The phenotype might be 3:1 i think, well need anything tag me :)
4 0
3 years ago
The value of n, the Hill coefficient, for hemoglobin is about _________ as great as the value for myoglobin.
ludmilkaskok [199]

The value of n, the Hill coefficient, for hemoglobin is about 2 to 3 times as great as the value for myoglobin.

Hill Equation

The two closely related equations that help to explain the binding of macromolecules to ligands are called the Hill equation. It helps to quantify the interaction between various ligand binding sites.

Hill coefficient

It is used to describe the cooperativity of ligand binding. It can be positive and negative depending on the value of the Hill coefficient. If the value of the Hill coefficient is more than one then it exhibits positively cooperative binding and if it is less than one then it exhibits negatively cooperative binding. Then there is the noncooperative binding where the Hill coefficient value is one. As for the hemoglobin and myoglobin, the values are,

  • Hill coefficient of hemoglobin is 2.7 - 3.
  • Hill coefficient of myoglobin is 1.0.

Thus hemoglobin is positively cooperative and myoglobin exhibits noncooperative binding.

Learn more about hemoglobin:

brainly.com/question/15011428

#SPJ4

4 0
2 years ago
An enzyme is a large molecule.
ruslelena [56]

enzymes are proteins that speeds up the rate of chemical reaction in a living organism . An enzyme acts as catalyst  for specific chemical reaction, converting a specific sets of reactants called substrates into  specific products with out enzymes life would not be exist

Explanation:

Enzymes are identified to catalyze more than 5,000 biochemical reaction types. Most enzymes are proteins, although a few are catalytic RNA molecules. Enzymes' specificity appears in their unusual three-dimensional structures. Like all enzymes, enzymes improve the reaction rate by decreasing its activation potential.

3 0
3 years ago
Read 2 more answers
A group of 250 women over the age of 40 are recruited for a study to determine the effects that calcium has on bone health. Half
egoroff_w [7]

Answer:

A. True

Explanation:

The result indicates that taking calcium has no effect on the development of osteomalacia in the women. This is because, of the over 120 women placed on the calcium supplements, it happens to be minimal number of people ( less than 20 people) that develop the osteomalacia disease of the bone.

6 0
3 years ago
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