Biology
Chapter 1 Test Review Sheet
1. How do heterotrophs obtain energy?
2. What is the smallest unit that carries on the functions of life?
3. What are all organisms made of?
4. What are the characteristics of living things?
5. A statement based on scientific observations is referred to as…
6. What is a hypothesis?
7. How do scientists design experiments?
8. What name is given to organisms with one cell?
9. What type of reproduction produces offspring with genetic variation?
10. What is biology?
11. What is homeostasis?
12. What is an observation?
13. How are hypothesis tested?
14. What is an explanation for a broad range of hypothesis?
15. What is differentiation?
16. How do autotrophs obtain energy?
17. What were the controlled variables, independent variable, and dependent
variables of the acne study?
18. How do humans maintain homeostasis when it’s hot?
19. What is the sum of all chemical reactions in the body?
20. Identify and explain with an example 3 characteristics of living things.
Some scientists ran an experiment where they determined the health factors involved in
people who drank one can of pop a day. They found no significant differences between
those who drank one can and those who drank as many as 20 cans a day. The concluded
that pop has no adverse effects on human health.
What were the variables?
Was this a controlled experiment?
Do you agree with the conclusion? Why or why not?
Answers
1. How do heterotrophs obtain energy? Consuming autotrophs, from other organisms
2. What is the smallest unit that carry on the functions of life? The cell
3. What are all organisms made of? cells
4. What are the characteristics of living things? Organization, cells, metabolism (utilize energy),
homeostasis, growth, reproduction
5. A statement based on scientific observations is referred to as… hypothesis
6. What is a hypothesis? A testable possible explanation to an observation
7. How do scientists design experiments? With a good idea of the results
8. What name is given to organisms with one cell? unicellular
9. What type of reproduction produces offspring with genetic variation? sexual
10. What is biology? The study of life
11. What is homeostasis? Maintaining a balance within cells and the environment, keeping things the
same, maintaining a stable internal environment
12. What is an observation? things that scientists notice using their senses
13. How are hypothesis tested? experiments
14. What is an explanation for a broad range of hypotheses? theory
15. What is differentiation? Stem cells change into cells with a specific job
16. How do autotrophs obtain energy? Photosynthesis, from the sun
17. What were the controlled variables age, gender, location of subjects, time of study, data
measurement time frame, independent variable diet, and dependent variables acne lesions, body
weight, BMI, insulin sensitivity of the acne study?
18. How do humans maintain homeostasis when it’s hot? Sweat to promote cooling by evaporation,
blood moves to the surface of the skin to release heat
19. What is the sum of all chemical reactions in the body? metabolism
20. Identify and explain with an example 3 characteristics of living things. Look in your notes
Some scientists ran an experiment where they determined the health factors involved in people who drank
one can of pop a day. They found no significant differences between those who drank one can and those
who drank as many as 20 cans a day. The concluded that pop has no adverse effects on human health.
What were the variables?
Independent – amount of pop consumed
Dependent – health factors
Was this a controlled experiment?
yes
Do you agree with the conclusion? Why or why not?
they didn’t test against a control group that drank no pop, cannot conclude about “human
health” from limited measurements