11 STEM | GENERAL BIOLOGY 1
Question and answers already passed
2025/2026
a dutch naturalist who examined live cells. in 1673, he observed pond scum and discovered single-celled
organisms - correct answer ✔anton van leeuwenhoek
leeuwenhoek didnt used the term cell, instead he used _______ which means "little animals" - correct
answer ✔animalcules
according to modern biologists, these are the basic structural unit of every life form - correct answer
✔cells
one of the basic principle ever made - correct answer ✔cell theory
a botanist. his focused interest is in the study of plants - correct answer ✔Matthias Jakob Schleiden
(1838)
he examined animal cells. he was a zoologist and a physiologist - correct answer ✔Theodor Schwann
(1839)
he proposed the 3rd tenet in the cell theory - correct answer ✔Rudolf Carl Virchow (1858)
it surrounds the cell separating them from their environment. this is semi-permeable/selectively
permeable - correct answer ✔plasma membrane
this acts as a barrier regulating what gets in and out of the cell. - correct answer ✔plasma membrane
, this is made up of double layered phospholipid molecules composed of phosphate, glycerol, and two
fatty acids - correct answer ✔plasma membrane
the _____ is composed of phosphate and glycerol ; the _____ is composed of the two fatty acids -
correct answer ✔head ; tail
this part is hydrophilic: attracted to water, polar - correct answer ✔head
this part is hydrophobic: repels water, non-polar - correct answer ✔tail
the 3 embedded molecules in the plasma membrane - correct answer ✔carbohydrates, cholesterol,
and proteins
involved in all identification. blood types for example are the result of membrane ______ attached to
proteins. - correct answer ✔carbohydrates
helps strengthen the cell membrane, making it more flexible but less fluidity - correct answer
✔cholesterol
its most important function is to transport materials across the membrane - correct answer ✔proteins
the phospholipids' ability to move side to side and slide past each other within each layer - correct
answer ✔fluid mosaic model
3 major parts of the cell - correct answer ✔plasma membrane, cytoplasm, nucleus
jell-like fluid found in cells and where the organelles are suspended - correct answer ✔cytoplasm
Question and answers already passed
2025/2026
a dutch naturalist who examined live cells. in 1673, he observed pond scum and discovered single-celled
organisms - correct answer ✔anton van leeuwenhoek
leeuwenhoek didnt used the term cell, instead he used _______ which means "little animals" - correct
answer ✔animalcules
according to modern biologists, these are the basic structural unit of every life form - correct answer
✔cells
one of the basic principle ever made - correct answer ✔cell theory
a botanist. his focused interest is in the study of plants - correct answer ✔Matthias Jakob Schleiden
(1838)
he examined animal cells. he was a zoologist and a physiologist - correct answer ✔Theodor Schwann
(1839)
he proposed the 3rd tenet in the cell theory - correct answer ✔Rudolf Carl Virchow (1858)
it surrounds the cell separating them from their environment. this is semi-permeable/selectively
permeable - correct answer ✔plasma membrane
this acts as a barrier regulating what gets in and out of the cell. - correct answer ✔plasma membrane
, this is made up of double layered phospholipid molecules composed of phosphate, glycerol, and two
fatty acids - correct answer ✔plasma membrane
the _____ is composed of phosphate and glycerol ; the _____ is composed of the two fatty acids -
correct answer ✔head ; tail
this part is hydrophilic: attracted to water, polar - correct answer ✔head
this part is hydrophobic: repels water, non-polar - correct answer ✔tail
the 3 embedded molecules in the plasma membrane - correct answer ✔carbohydrates, cholesterol,
and proteins
involved in all identification. blood types for example are the result of membrane ______ attached to
proteins. - correct answer ✔carbohydrates
helps strengthen the cell membrane, making it more flexible but less fluidity - correct answer
✔cholesterol
its most important function is to transport materials across the membrane - correct answer ✔proteins
the phospholipids' ability to move side to side and slide past each other within each layer - correct
answer ✔fluid mosaic model
3 major parts of the cell - correct answer ✔plasma membrane, cytoplasm, nucleus
jell-like fluid found in cells and where the organelles are suspended - correct answer ✔cytoplasm
