Question | Answer |
When a scientist classifies a newly discovered plant, they study... | phylogeny |
When a bright light shines in your eyes, you close your eye lids quickly. What is the bright light? | a stimulus |
What is a trait of all organisms? | Homeostasis |
You want to find out how much water an aquarium tank can hold. Which SI measurement unit would you use? | liters |
When you touch a hot pan on the stove with your hand, you quickly move your hand away. How do you describe your hand's movement? | It is a reaction |
You want to weigh a large dog. Which SI measurement unit would you use? | kilograms |
What is the process in which new organisms replace those that die? | reproduction |
The part of an experiment that can change is __________ ? | a variable |
Which of these is true of scientific methods?
1- it is not important to form a hypothesis
2- conclusions are drawn at the beginning of the process
3- the problem needs to be stated at the beginning of the process
4- data can be analyzed in only one wa | 3- the problem needs to be stated at the beginning of the process |
What is the length of the time an organism is expected to live? | a life span |
Which person devised an animal classification system 2,000 years ago? | Aristole |
How many hypotheses can a theory explain? | multiple hypotheses |
Which one is a tool used to identify organisms?
1- a stimulus
2- a hypothesis
3- a control
4- a dichotomous key | 4- a dichotomous key |
The theory that supposes that living things came from nonliving things is... | spontaneous generation |
Which of these scientists studies animals?
botanist, physicist, zoologist, or geologist | a zoologist |
In order to draw conclusions about a scientific problem a scientist can...
1- never revise the hypothesis
2- choose whether or not to form a hypothesis
3- always reject the hypothesis
4- accept the hypothesis | 4- A scientist can accept the hypothesis. |
How do many-celled organisms grow?
1- the cells use energy from the Sun
2- only one of its cells gets bigger
3- bacteria invade the cells
4- they make more cells | they make more cells |