Quiz #1

Question 1

Characteristics of living organisms

Answer 1

all living organisms share certain characteristics that distinguish them from non-living things

Question 2

7 characteristics of living organisms

Answer 2

order, reproduction, growth & development, energy processing, regulation/ homeostasis, response to stimuli/ environment, evolutionary adaptation

Question 3

the cell

Answer 3

smallest unit capable of all life functions

Question 4

cell performs all life processes including…

Answer 4

growth, metabolism, response to stimuli, and reproduction

Question 5

tissues, organs

Answer 5

higher levels of organization are built from cells

Question 6

eukaryotic cells

Answer 6

plants & animals
have nucleus

Question 7

prokaryotic cells

Answer 7

bacteria
no nucleus

Question 8

evolution

Answer 8

the process by which species change over time through adaptation and natural selection

Question 9

evolution reflects…

Answer 9

ongoing change

Question 10

evolution is driven by…

Answer 10

natural factors, such as mutations, genetic drift and environmental pressures

Question 11

phylogenetic trees

Answer 11

represent the evolutionary relationships among species

Question 12

branch points

Answer 12

represent the most recent common ancestor of the species diverging from that point. Shows how species are related through evolution

Question 13

sources of genetic variation

Answer 13

genetic variation is crucial for evolution and adaptation. Adaptations occur due to genetic variation and environmental pressures, not an organism’s needs.

Question 14

primary sources of genetic variation

Answer 14

natural selection (environmental survival pressures), gene flow (migration of genes between populations), genetic drift (random changes), mutation (changes in DNA that introduce new traits).

Question 15

unifying themes of biology

Answer 15

1. new properties emerge at successive levels of biological organization 1a. structure and function are correlated at all levels of organization 1b. the cell - an organisms basic unit
2. life’s processes involve the expression and transmission of genetic information
3. life requires the transfer and transformation of energy and matter
4. ecosystems to molecules, interactions are important in biological systems
5. evolution accounts for the unity and diversity of life

Question 16

scientific method

Answer 16

systematic approach to investigation and discovery in science

Question 17

7 steps of the scientific method

Answer 17

observation
question
hypothesis formation
prediction
experiment
interpretation/ data analysis
conclusion/ new questions