Biology 1134 Exam 1 Review

Choose the correct answer below

• Correct answer

• Incorrect answer

• Incorrect answer

• Incorrect answer

• Incorrect answer

Which of the following is FALSE?

• The principles described by the Central Dogma underlie Darwin's theory of evolution.

• Living systems show feedback and interaction among component parts.

• The Central Dogma describes the necessity of membranes in gene expression.

• All living organisms use DNA, which is a central principle of the Central Dogma.

• At least one membrane surrounds the DNA and cytoplasm of a cell.

Dr. McClaine was trying to determine the cause of a mysterious epidemic affecting fish in the Gulf of Mexico. Her proposal that the deaths were caused by an organism called a protist is considered a(n)

• Conclusion

• Experiment

• Data Set

• Theory

• Hypothesis

You are walking in a local forest and see an animal. It has dull colored wings, a body made of three parts, and six legs. You immediately recognize it as a moth based on these traits. You reached this conclusion using

• reductionism

• deductive reasoning

• comparative reasoning

• inductive reasoning

• the scientific method

Based on the literature, you hypothesize that students in traditional biology lectures will have the same grades as students in online biology lectures. You decide to test your hypothesis by comparing grades of students in traditional and online biology lectures over a semester. As a result of the experiment, you observe that the grades in the traditional lectures and the grades in the online lectures are lower but not significantly different. What do these observations allow you to do?

• reject your hypothesis

• accept the hypothesis as truth

• fail to reject your hypotheses

• develop a scientific theory

• nothing because it is inconclusive

A student wonders how the presence of dissolved salt affects the freezing point of water. To answer this question, the student set up two conditions. In one, the student added salt to water in a container. In the second condition, the student did not add any salt to water in a second container. The student took both containers and attempted to freeze the water at various temperatures to assess the freezing point. Would this be a valid experiment?

• Yes, because there is one variable (added salt) and a control (no salt).

• No, because there is only one variable (added salt) and a control (no salt).

• Yes, because there is more than one variable (added salt and no salt).

• No, because there is not more than one variable (added salt and no salt).

• Yes, because there is one variable (no salt) and a control (added salt).

In the real world, many factors determine the numbers of organisms in any one population. Yet, a SUPERFLY with unlimited food and no mortality would show what type of growth?

• irruptive growth

• J-shaped curve

• carrying capacity geometric increase

• Malthusian growth

• S-shaped curve

Which of the following is not generally true of K-selected species compared to r-selected species?

• they have slower population growth rates

• they have fewer young

• they have longer life spans

• they reach sexual maturity later

• they have shorter generation times

The difference between per capita birth rate and per capita mortality rate is designated by which part of the logistic equation?

• N

• (K-N)/K

• rN

• r

• rN((K-N)/K)

A population of otters is growing by 20% each year. Suppose a particular bay in Alaska can support approximately 1000 otters and there are 300 otters living there currently. How big would the population be predicted to be next year?

• 342

• 321

• 384

• 640

• 426