The Science of Biology (Chpt 1)

Question 1

What is science?

Answer 1

• Science is the study of our world
• an organized way of using evidence to learn about natural world

Question 2

Goal of science?

Answer 2

• investigate and understand nature
• explain events in nature
• make useful predictions

Question 3

def of biology?

Answer 3

• the study of living organisms

Question 4

Steps of scientific investigation

Answer 4

• Observation: using 5 senses
• Research: using reliable sources
• Hypothesis: a prediction of what you think will occur
• Experiment: collect data…
• Conclusion: result & analyze
• Share results

Question 5

Theory? Law? Phenomenon?

Answer 5

Theory: investigations that have been heavily supported; may not be proven
- an explanation to a phenomenon
Law: a statement that describes a phenomena of the natural world,
- collaborated with repeated experimental observations
Phenomenon: A fact or situation that is observed to exist or happen whose cause or explanation is in question

Question 6

Observation vs Inference

Answer 6

Obs: gathering info using 5 senses
- Qualitative: using adj to describe
-Quantitative: measure, # used to describe
Inf: explanation to an observation using past experiences & knowledge

Question 7

What is a Hypothesis?

Answer 7

a possible explanation to an observation or question that can be tested
- If…, then…, because…

Question 8

Bar Graph used for?

Answer 8

• quantitative data
• comparing groups

Question 9

Circle Graph (pie chart) used for?

Answer 9

• display parts of a whole/ percentages

Question 10

Scatter Plots used for?

Answer 10

• possible relationship between 2 variables

Question 11

Line Graph used for?

Answer 11

• compare how 1 variable changes in response to a continuously changing variable

Question 12

Histogram used for?

Answer 12

-distribution of data

Question 13

Def of biodiversity?

Answer 13

• represents the total variety of all life on earth
• more diversity = more security of all life on earth

Question 14

How are people destroying biodiversity?

Answer 14

• overhunting
• overfishing
• cutting down trees
• human caused forest fires
• destruction of habitats
• human altering

Question 15

What are the characteristics of living things?

Answer 15

• Cellular organization: all living things are made of cells, basic unit of structure and function, can be uni/multi cellular
• Homeostasis: maintenance of a stable internal environment
• Heredity: organisms pass on heredity traits
• Reproduction: Asexual & sexual reproduction —–
• Responsiveness
• Growth and Development:
• Metabolism: anabolism, catabolism, metabolism
• Adapt through evolution

Question 16

Asexual vs Sexual reproduction

Answer 16

• Asexual: single parent produces identical offspring, (2 Fission, budding)
• Sexual: fussion of sex cells, cells from 2 different parents unite to form one cell of a new organism

Question 17

Levels of Organization

Answer 17

atom, molecule, macromolecules, organelles, cell, tissue, organ, organ system, organism,

species, population, community, ecosystem, biosphere,

Question 18

Light vs Electron microscope

Answer 18

• Light: limited in detail since light is scattered,
• Electron: uses beams of electrons, cannot study living organisms (requires full vacuum)