BiSci: Lesson 3
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-phospholipid bilayer that encloses cell
-materials enter and leave through specific channels
-regulates cell processes through chromosomal genes
-the "powerhouse" of cell
-provides energy in form of ATP
what makes the mitochondrion unique?
It has a double membrane
-has its own DNA
smooth endoplasmic reticulum (ER)
rough endoplasmic reticulum (ER)
modifies proteins synthesized by ribosomes attached to its surface.
-found in cytoplasm or attached to rough ER
modfies roteins and lipids synthesized within the ER
-packages these products for transport to other parts of the cell or for secretion;
-prepares lysosomal enzymes
-transfers to lysosome
intracellular digestion and disposal of cell wastes
-helps determine cell shape
-assists with intracellular transport of materials
-anchors and moves organelles.
constructed of microtubules that help organize chromosome migrations during cell division
microtubule hairs on the cell surface that help control cell surface mobility
- especially important in respiratory tract lining,
single long microtubule hair used for cell mobility
-increases cell membrane surface area for absorption -found in intestinal and kidney cells
The ______ is involved in disposal of cellular debris
The ______ of some cells is modified to form microvilli.
Protein synthesis takes place on the ______
The cell's genetic material is located in the ______
The ______ is the "powerhouse" of the cell
The ______ is the control center for regulating cellular functions
The ______ contains citric acid (Krebs) cycle enzymes
The ______ regulates the movement of molecules into and out of the cell
Hormone receptors are located on the ______
the three major metabolic pathways involved in aerobic cellular respiration
The three major metabolic pathways are glycolisis, citric acid cycle (Krebs cycle), and the electron transport chain
the random movement of molecules from an area of higher concentration to
an area of lower concentration via their own kinetic energy (passive transport)
the diffusion of water across a selectively permeable membrane from the side of higher water concentration (lower solute) to the side of lower
water concentration (higher solute) (Passive transport)
A molecule is transported across the cell membrane from a higher concentration to a lower concentration (of that molecule) via a protein carrier
Molecules are moved across the cell membrane against their concentration gradient by a protein pump. Energy is required
The solute concentration of two solutions (inside and outside cell) is the same
The solute concentration outside the cell is higher (therefore H20 concentration is lower), causing water to leave the cell and it will shrink or "crenate".
The solute concentration outside the cell is lower (therefore H20 concentration is higher). Water will enter cell causing it to swell and burst or "lyse."
A normal red blood cell placed in a solution begins to swell. This means that
water is moving into the cell.
A substance moving across a cell membrane from a region of low to high concentration can do so by
The organelle responsible for protein processing, packaging and transport is the
Which organelle is incorrectly paired with its corresponding function?
BiSci: Lesson 3
Lesson 3 key concepts