Question 1

In science,all results

Accepted Answer

Results in science always have a probability of being incorrect due to the inherent uncertainties and limitations in experimental design, measurement techniques, and interpretation.

Question 2

A control group

Accepted Answer

A control group is an untreated group used for comparison with the experimental group that receives the treatment. This allows researchers to determine whether the treatment had an effect or not, by comparing the results of the experimental group to the control group. Therefore, the control group receives no treatment, making choice A incorrect. Choice C is also incorrect since it suggests that the control group is exposed to some kind of experimentally created hardships. Choice D is incorrect because the control group is an essential part of most experiments. Finally, choice E is incorrect because even the control group can be subjected to some degree of experimental error, though this should be minimized as much as possible.

Question 3

The variable(s)in the butterfly experiment is(are)the

Accepted Answer

The answer of The variable(s)in the butterfly experiment is(are)the
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Question 4

Sampling error can be minimized by one or more of the following.

Accepted Answer

Using a large sample can help reduce sampling error because it provides a more accurate representation of the population being studied. This increases the likelihood that the sample is representative of the population, which can help reduce sampling error. Conducting the experiment or observation only once (B) can actually increase sampling error because it does not allow for replication and increases the chances that chance factors or outliers influence the results. Throwing out data that does not fit the conclusion (C) can also increase sampling error because it biases the sample and can lead to a non-representative sample. Using a small subset of a larger population (D) can also increase sampling error because it limits the sample's representativeness and can increase the impact of chance factors. Therefore, the best choice to minimize sampling error is A, using a large sample.

Question 5

In the experiment with peacock butterflies the working hypothesis is that

Accepted Answer

The working hypothesis in the experiment with peacock butterflies is that mimicry protects butterflies from being eaten by predatory birds. This is based on the observation that some butterflies have evolved to resemble other, unpalatable species to avoid being eaten, suggesting that birds are capable of learning which species are unpalatable and avoiding them.

Question 6

Scientists perform ____ in order to ____ a given ____.

Accepted Answer

Scientists perform experiments to test a given hypothesis. This involves manipulating variables and observing the results, in order to gather data and draw conclusions. Testing a hypothesis is a fundamental part of the scientific method, which is used to develop and refine our understanding of the natural world. Choice A accurately describes this process. The other choices do not accurately describe the scientific process, or use the terms in a way that does not match their standard usage.

Question 7

Evolution has been tested in various ways.Genetic,fossil,anatomical,physiological and behavioral studies all confirm that evolution is the mechanism of the origin of species.Thus,in science evolution is considered a scientific

Accepted Answer

Evolution is considered a scientific theory, which means it has been extensively tested and supported by a broad range of evidence. It is not a hypothesis (which is a proposed explanation that still needs to be tested), a law (which describes a relationship between phenomena but does not explain why it occurs), or a guess (which is not based on any evidence). While evolution is a fact in the sense that species have changed over time, the explanation of how and why this occurs is the theory of evolution.

Question 8

All of the following are characteristics of ALL living organisms with one exception.Select the exception.

Accepted Answer

Not all living organisms derive energy from inorganic sources. Some rely on organic sources, such as other organisms or their own stored energy reserves. For example, humans and other animals rely on the energy stored in food, while plants and some bacteria utilize sunlight for energy through photosynthesis.

Question 9

Error bars on a graph indicate

Accepted Answer

Error bars indicate the amount of variation in a set of data around the average or mean. They represent the range or uncertainty in the data and show the degree of confidence in the results. They do not necessarily indicate that the data is wrong or that the researcher is unsure of the results, but rather the extent of variation within the data.

Question 10

Scientists attempt to avoid bias by which of the following?

Accepted Answer

All of the choices mentioned - designing quantitative experiments, experiments repeated by other scientists, publicly publishing their results, and controlling as many variables as possible - are methods scientists use to avoid bias in their research. By utilizing multiple methods of avoiding bias, scientists can increase the accuracy and reliability of their findings.

Question 11

In science,a theory is defined as

Accepted Answer

A theory in science is more than just a guess or hypothesis. It is an explanation that has been well documented and consistent with the evidence. It is based on multiple lines of evidence and has undergone rigorous testing and scrutiny. Essentially, a theory is the best explanation we have for a phenomenon based on the available evidence.

Question 12

How did the control group differ from the experimental group in the butterfly experiment?

Accepted Answer

The control group and experimental group in the butterfly experiment were both the same species and had the same habitat and food source. The only difference between the two groups was that the control group had no spots or sounds, while the experimental group had artificial spots and sounds added to their wings.

Question 13

A result is statistically significant if

Accepted Answer

A result is statistically significant if it is unlikely to have occurred by chance. This means that there is a low probability that the observed result was due to random chance alone. In statistical hypothesis testing, a significance level (often set to 0.05) is used to determine whether a result is statistically significant or not. If the p-value is less than or equal to the significance level, the result is considered statistically significant, indicating that it is unlikely to have occurred by chance.

Question 14

In the peacock butterfly experiment,what was the conclusion?

Accepted Answer

The experiment concluded that the clicking sounds made by peacock butterflies deterred predatory birds.

Question 15

All of the following do NOT depend directly on sunlight or other inorganic sources for energy with one exception.Select the exception

Accepted Answer

The answer of All of the following do NOT depend...

Question 16

In the Olestra potato chip experiment,the result was

Accepted Answer

The experiment did not find any evidence that Olestra caused cramping, so the correct answer is that there was no evidence that Olestra caused cramping. The other options are not supported by the experiment.

Question 17

The final step in the scientific method for a scientist is

Accepted Answer

The final step in the scientific method is to report the results of the experiment, which involves interpreting the data and drawing conclusions. This is crucial for advancing scientific knowledge and allowing other scientists to replicate and build upon the research.

Question 18

In science,if a result is deemed statistically significant,that means

Accepted Answer

When a result is deemed statistically significant, it means that there is a low probability that the result is due to chance or sampling error. However, it does not necessarily mean that the result is very important, free of variation, or completely true. Additionally, the probability of the result being incorrect is generally taken to be low if the significance level is set at a reasonable threshold (e.g. p<0.05).

Question 19

A scientific theory

Accepted Answer

A scientific theory is a well-supported explanation of a phenomenon that is widely accepted within the scientific community. It is based on multiple lines of evidence and has been rigorously tested through experimentation and observation. While a theory may be revised or refined over time, it is not considered to be an absolute truth, as new evidence or interpretations may emerge.

Question 20

The control in an experiment

Accepted Answer

The answer of The control in an experiment
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Quiz 1: Invitation to Biology