Q1 GENBIO(UPDATED) Flashcards
Who contributed the third point of the cell theory:
3. All new cells arise from existing cells.
Person
Rudolf Virchow
Who proposed the first two points:
1. All living things are composed of one or more cells.
2. The cell is the basic unit of life.
Two people
Theodor Schwann and Matthias Schleiden
An ____ is a subcellular structure
that has one or more specific jobs to perform in the cell.
Organelle
Known as the cell’s “command center.”
Nucleus
DNA
Acronym
Deoxyribonucleic Acid
Within the nucleus is a smaller structure
called the ____.
Nucleolus
Houses the
RNA.
Nucleolus
____ are the protein
factories of the cell.
Ribosomes
The ____ is
a membranous organelle.
Endoplasmic Reticulum
Some portions of this are studded with ribosomes and are involved with ____ manufacturing.
Two answers
Rough Endoplasmic Reticulum
Protein
The rest of
the Endoplasmic Reticulum is referred to as the
____ and serves to
produce vital ____.
Two answers
Smooth Endoplasmic Reticulum
Lipids
If the proteins from the rough ER
require further modification, they
are transported to the ____ (or ____).
Golgi Apparatus
Golgi Complex
Serves as the site of photosynthesis.
Chloroplast
Chloroplasts contain a pigment known as ____.
Chlorophyll
The powerhouse of the cell.
Mitochondria
Transforms glucose into ATP(Adenosine Triphosphate)
Mitochondria
Provides
mechanical support that
facilities the shape of the cell
while enclosing the cell and its
components from the external
environment.
Cell membrane
It regulates what can be allowed
to enter and exit the cell
through channels, acting as a
semi-permeable membrane.
Cell membrane
Made up of cellulose,
hemicellulose, and proteins.
Cell wall
Plant Cell
What is the cell wall made out of in fungal cells?
Chitin
Protects and maintains the shape of the cell.
Cell wall
Consists of a cylindrical
structure made with nine triplets
microtubules.
Centrioles
During cell division, centrioles have
a crucial role in forming ____.
Spindle fibers
They are also involved in the formation
of cilia and flagella.
Organelle
Centriole
Are tiny hair-like projections from the cell made of microtubules.
Cilia and Flagella
The most critical role of cilia and flagella.
Movement
Acts as a buffer and protects genetic materials.
Cytoplasm
Helps in the distribution of various nutrients and facilitates the movement of cell organelles within the cell.
Cytoplasm
Helps give shape to the cell while supporting cellular transport.
Cytoskeleton
Also involved in the intracellular and extracellular transport of materials.
Cytoskeleton
Involved in various cellular
processes, including secretion,
plasma membrane repair, cell
signaling, and energy metabolism.
Lysosome
Act as a storage for nutrients
as well as waste materials
Vacuole
Allow temporary storage of food
and also control the buoyancy of
the cell.
Vesicles
Double membrane-bound structures present in plants.
Plastids
Coined the term “cell” to
describe the tiny, box-like structures he saw.
Person and date
Robert Hooke in 1665
Improved microscope lenses, enabling him to observe living cells like bacteria and protozoa.
Person and date
Anton van Leeuwenhoek in 1674
Concluded that all
plant parts are
made of cells.
Person and date
Matthias Schleiden in 1838
Extended Schleiden’s observations to animals, proposing that all living things are composed of cells.
Theodor Schwann in 1839
“Omnis cellula e cellula”
Translation
All cells arise from pre-existing cells
Disproved spontaneous generation, supporting Virchow’s theory.
Person and date
Louis Pasteur in 1862
Discovered DNA within the nucleus, highlighting the importance of the cell nucleus.
Friedrich Miescher in 1869
Described the process of mitosis, the division of a cell into two daughter cells.
Walther Flemming in 1879
State if attribute is present in prokaryote, eukaryote or both
Nucleus
Eukaryote
State if attribute is present in prokaryote, eukaryote or both
1-10 micrometers in size
Prokaryote
State if attribute is present in prokaryote, eukaryote or both
Complex cell wall
Prokaryote
State if attribute is present in prokaryote, eukaryote or both
One or more chromosome
Eukaryote
State if attribute is present in prokaryote, eukaryote or both
Vacuoles
Both
State if attribute is present in prokaryote, eukaryote or both
Golgi Apparatus
Eukaryote
State if attribute is present in prokaryote, eukaryote or both
Mitochondria
Eukaryote
State if attribute is present in prokaryote, eukaryote or both
Vesicles
Both
State if attribute is present in prokaryote, eukaryote or both
Circular DNA arrangement
Prokaryote
State if attribute is present in prokaryote, eukaryote or both
Smaller Ribosome
Prokaryote
State if attribute is present in prokaryote, eukaryote or both
Plasmid
Prokaryote
They are termed as suicidal bags due to their possession of hydrolytic enzymes capable of digesting proteins, lipids, carbohydrates and nucleic acid.
Lysosomes
The Golgi apparatus is composed
of flat, disc shaped structures known as
____.
Cisternae
Prokaryotes (pro- = before)
came from the Latin pro,
meaning,
Etymology
“in favor of” or “on
behalf of”
Eukaryotes (karyon- = nucleus)
(eu- = true).
Etymology
“true kernel” or
“true nucleus”
Prokaryotes and Eukaryotes share four common components:
-Plasma membrane
-Cytoplasm
-DNA
-Ribosomes
These increase the surface area for
the absorption of nutrients and other
essential substances.
Microvilli
Prevents mucus, bacteria,
and dirt from entering the
lungs.
Cillia
Are tail-like structures that provide motility to cells.
Flagella
Cell junctions are found in ____ and are
mainly responsible for connecting adjacent cells.
Epithelial cells
Prevents leakage
of substances.
Tight junctions
Connect
adjacent cells.
Adherens
junctions
Answer can be Desmosome
Also connect
adjacent cells.
Desmosomes
Answer can be Adherens junctions
Serve as channels of ions, water and other essential substances.
Gap junctions
Erythrocytes
Red blood cells
Leukocytes
White blood cells
Thrombocytes
Platelets
This blood cell lacks a mitochondria
Red blood cell
or Erythrocytes
Responsible for the body’s defenses.
White blood cells
or Leukocytes
Are the largest cells in the human body and are necessary for sexual reproduction.
Egg cell
These are epidermal outgrowths responsible for preventing insect attacks, shading leaves, and trapping insects.
Trichomes
Are tiny hair-like structures that originated from the epidermis of plants. These also facilitate the absorption of water from the substrate.
Root hairs
What layer is primarily responsible for photosynthesis?
Mesophyll layer
Determine if Xylem or Phloem
One-way(upward) flow
Xylem
Determine if Xylem or Phloem
Live cells with no nucleus
Phloem
Determine if Xylem or Phloem
Rich in lignin
Xylem
Determine if Xylem or Phloem
Perforated end walls
Phloem