Quarter 1 Week 3 [School-based]

Question 1

Etymology of Prokaryotes

Answer 1

came from the greek words “pro” meaning “before
and “karyon” meaning “nut or kernel” but in science, it’s “nucleus”

it was called BEFORE NUCLEUS because it doesn’t have a TRUE NUCLEUS…..meaning, its nucleus or genetic material isn’t bounded by a membrane.

It has no visible boundary

Question 2

What are the two prokaryote domains

Answer 2

bacteria and archaea

Question 3

these prokaryotes live in normal environmental conditions/settings (not too harsh)

Answer 3

Bacteria

Question 4

these are prokaryotes that can live even in harsh environmental conditions (e.g seaweed living underwater with high salinity)

Answer 4

archaea

Question 5

What is the average size of a prokaryotic cell?

Answer 5

1-5 micrometer in size or 1-5x10^-6 meters

Question 6

smallest prokaryotic cell

Answer 6

mycoplasma

Question 7

largest prokaryotic cell

Answer 7

Thiomargarita nemibiensis

Question 8

Proper writing of scientific names

Answer 8

• italicize it (if typed)
• capitalize genus
• do not capitalize species
• underline (if written)

Question 9

Etymology of Eukaryotes

Answer 9

from the greek word “Eu” meaning “true
and “karyon” meaning “nucleus”

It has a TRUE NUCLEUS because its nucleus is membrane-bounded, thus, it has a visible boundary

Question 10

average size of a eukaryotic cell

Answer 10

30 micrometer in size or 3.0x10^-5 meter

Question 11

largest eukaryotic cell in humans

Answer 11

egg cell

Question 12

smallest eukaryotic cell in humans

Answer 12

sperm cell

Question 13

egg cell + sperm cell

Answer 13

nodular

Question 14

smallest eukaryotic cell

Answer 14

Prasinophyte algae (can be mobile because of the presence of flagellum)

Question 15

largest eukaryotic cell

Answer 15

Caulerpa taxifolia