A student placed a disk of filter paper in each of the following solutions: disinfectant 1, disinfectant 2, disinfectant 3, and distilled water. While the four disks were soaking in their respective solutions, she streaked a sterile nutrient agar dish with a culture of E. coli bacteria. Then, she placed each disk carefully onto the nutrient agar dish, placed the lid on the dish, taped it shut, and incubated the dish at 37°C for several days. The diagram shows how the nutrient agar dish looked on Day 1 and Day 4. The shaded portion of the plate on day 4 indicates the bacterial growth. What is the control in the experiment?a. Disk soaked in disinfectant 1
b. Disk soaked in disinfectant 3
c. Disk soaked in disinfectant 2
d. Disk soaked in distilled water

Answers

Answer 1

Answer: d. Disk soaked in distilled water

Experimentation is a scientific process wherein you test and verify a hypothesis based on its assumption is going to be supported or negated (null hypothesis). Hence experimentation involves the independent and dependent variable, also control variable as a level in the IV.

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Answers

Answer:

selective permeability

Explanation:

The selective permeability of biological membranes to small molecules allows the cell to control and maintain its internal composition.

Dr. Lombard's research is focused on the capacity of the human mind to store and retrieve information. Her colleague, Dr. Fry, is a clinician who strives to help his clients be "the best that they can be." As a fly on the wall listening to the two psychologists' friendly disputes during coffee breaks, which of these assertions would you most likely expect from Dr. Fry?A. Mental confusion is best compared to a deficiency in short-term memory.
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Answers

The right answer for the question that is being asked and shown above is that: "A. Mental confusion is best compared to a deficiency in short-term memory. " The assertion that would you most likely expect from Dr. Fry is that A. Mental confusion is best compared to a deficiency in short-term memory.

Mechanical weathering occurs at a greater rate in climates that are a. cold and wet. c. hot and dry. b. warm and wet. d. cold and dry.

Answers

the answer would be a. cold and wet.

I believe that the answer is a.
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How do environmental factors influence genetic traits?a. Environmental factors determine all genetic traits.
b. Environmental factors can determine if a genetic trait becomes a health issue.
c. Environmental factors are determined by genetic traits.
d. Environmental factors have no influence on genetic traits >
Which of the following statements about human society and limiting factors is true?
a. Modifications made to the environment to reduce the impact of limiting factors can cause ...

Answers

b. Environmental factors can determine if a genetic trait becomes a health issue.

Food, temperature, sunlight, and water are examples of environmental factors that can affect an organism's traits. Many characteristics of plants and animals involve both inheritance and the environment.
Environmental factors such as diet, temperature, oxygen levels, humidity, light cycles, and the presence of mutagens can all impact which of an animal's genes are expressed, which ultimately affects the animal's phenotype.
Changes in many genes, each with a small effect, may underlie susceptibility to many common diseases, including cancer, obesity, diabetes, heart disease, and mental illness.

Learn more:

brainly.com/question/19607564

Answer:

The correct answer would be B

Explanation:

Correct on EDG

What is the full form of DNA