Bio quiz 1:

Which of these is a hypothesis?

- My car's battery is dead.? if my car does not start & I recharge the battery then my car will start.

The statement, "If you show your dog affection, then your dog will seek your company is an example of (choose all that apply):

- deductive reasoning - a prediction - a statement derived from a hypothesis - a statement that can be tested

In presenting data that result from an experiment, a group of students show that most of their measurements fall on a straight diagonal line on their graph. However, two of their data points are "outliers" and fall far to one side of the expected relationship. What should they do?

Show all results obtained and then try to explore the reason(s) for these outliers.

What is a hypothesis?

a tentative explanation that can be tested & is falsifiable.

A scientific hypothesis may turn out to be right or it may turn out to be wrong. If it is a valid hypothesis, there must be a test for proving it to be wrong.

false

Read the following scenario & answer the ? below. Pablo & Johanna have to do a yearlong study for their bio course. After some discussion, they decided to try comparing their dogs & the diet that they feed them. Each has a dog from the pound, & both dogs are less than 1 year old. Pablo feeds his shepherd-mix dog a special diet of wet & dry foods from the local vet, while Johanna uses generic dry kibble from the supermarket for her bulldog. They want to see which diet results in bigger, healthier, & faster-growing dogs. The dependent variable in this study will be _____.

how much the dogs grow.

Wotf statements best distinguishes hypothesis from theories in science?

hypothesis usually are relatively narrow ins cope, theories explain a broader set of ideas.

Which of the following best describes the logic of hypothesis-based science?

if my hypothesis is correct, I can expect certain test results.

A friend of yours calls to say that his car would not start this morning. He asks for your help. You say that you think the battery must be dead. If so, then jump-starting the car from a good battery will solve the problem. In doing so, you are _____.

stating a hypothesis & using that hypothesis to make testable prediction.

a scientist hypothesizes the temperature at which an alligators egg is incubated will determine the alligator to be male or female the INDEPENDENT variable is and the DEPENDENT variable is:

temperature, the gender of the baby alligators

In a scientific experiment, what is the function of the control group?

the control group serves as a basis of comparison w the experimental group.

Read the following scenario & answer the ? below. Pablo & Johanna have to do a yearlong study for their bio course. After some discussion, they decided to try comparing their dogs & the diet that they feed them. Each has a dog from the pound, & both dogs are less than 1 year old. Pablo feeds his shepherd-mix dog a special diet of wet & dry foods from the local vet, while Johanna uses generic dry kibble from the supermarket for her bulldog. They want to see which diet results in bigger, healthier, & faster-growing dogs. The idp variable in this study will be _____.

the type of food the dogs recieve.

The best experimental design includes a large sample size & a control, & alters only 1 condition btw the controls & the experimental condition.

true

A scientific hypothesis may turn out to be right or it may turn out to be wrong. If it is a valid hypothesis, there must be a test for proving it.

wrong