Chapter 4

Question 1

a collection of disciplines that is made up of theories and principles that tackles the structure and function of living things starting from the molecular level up to entire ecosystems

Answer 1

Life science

Question 2

Branches of biology

Answer 2

Zoology
Microbiology
Botany

Question 3

This field advances our knowledge about the anatomy, cell biology, ecology, genetics, molecular biology, and physiology of all living things on Earth.

Answer 3

Biological science

Question 4

Types of organisms

Answer 4

Eukaryote
Prokaryote

Question 5

Animals, plants, fungi, protists
• Maybe unicellular or multicellular
• An@cell or organism that possesses a clearly define nucleus
Contains organelles

Answer 5

Eukaryote

Question 6

Bacteria and archaea
Unicellular
• Any cell or organism that lacks a distinct nucleus and other organelles due to the absence of internal membranes

Answer 6

Prokaryote

Question 7

This supported the idea that the Earth changed over time and some dry land
today was once covered by oceans.

Answer 7

Fossils of ancient sea life on dry land far from oceans

Question 8

Allowed the people to realized that rock layers represent the order in which rocks and fossils appeared, thus they were able to trace the history of Earth and life on Eartht

Answer 8

The many layers of rock

Question 9

the early earth is said to be violent because of the meteorites and volcanic eruptions. With
this condition, zircon
crystal was formed.

Answer 9

4.6 - 3.8 BYA

Question 10

life on Earth initially began
prokaryotes, discovered in
• sedimentary
rock formations called stromatolites.

Answer 10

3.5 bya

Question 11

The first photosynthetic organism
thrived the earth which is blue green alene called cyanobacteria.

Answer 11

3.0 bya

Question 12

Appearance of the first eukaryotes
and the influx of multiceluar
organisms occurred 1.2 billion years ago.

Answer 12

2.0 bya

Question 13

•The Paleozoic era when the trilobites
and cephalopods became dominant in the ocean particularly during the Cambrian and Ordovician

Answer 13

500 mya

Question 14

The Mesozoic era-the age of reptiles that has a span of ——— MYA divided into Triassic, Jurassic and Cretaceous
period

Answer 14

251 - 65.5 mya

Question 15

The Cenozoic era
recent life and based on
paleontological
evidence, Homo erectus have evolved

Answer 15

250 tya

Question 16

Organisms belonging to different kind share the following characteristics that allow us to identify that they are living:

Answer 16

They are made up of cells.
They grow and develop.
They are capable of reproduction.
They exhibit metabolism.
They respond to their environment.
They maintain homeostasis.

Question 17

These geological events shaped much of the
Earth’s surface and supported the idea of an older Earth.

Answer 17

The indications of volcanic eruptions, earthquakes, and erosion