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MCB150 2024/2025 WITH 285 QUESTIONS AND CORRECT ANSWERS RATED A+
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MCB150 2024/2025 WITH 285 QUESTIONS AND CORRECT ANSWERS RATED A+MCB150 2024/2025 WITH 285 QUESTIONS AND CORRECT ANSWERS RATED A+
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MCB150 2024/2025 WITH 285QUESTIONS AND CORRECT ANSWERS
RATED A+
Nucleoid - ANSWER-Prokaryotes have these, this is where their genetic material is
found. eukaryotes don't have these.
cytoplasmic membrane - ANSWER-Plasmic membrane
every cell has one
genetic material of a eukaryote resides in the - ANSWER-nucleus
The closer Rnas they match, the two organisms more likely have an ancestor
together. - ANSWER-
the Archaea are genetically closer related to the eukarya then to the bacteria,
although archaea and bacteria both prokaryotes. the archaea and bacteria do
look alike, though. structurally, - ANSWER-
Basic tenets of the cell theory: - ANSWER-1. Cell is fundamental unit of life.
2. All organisms are composed of cells.
3. all cells come from preexisting cells.
,Cells are small... Why? - ANSWER-As the size increases, the surface area to
volume ratio decreases!
**
Smaller you are, less volume you have, less reactions you can maintain.
transmission electron miscrospy - ANSWER-thin section of material that u can
look very closely at.
scanning electron microscopy - ANSWER-not as close of a look, but gives a 3d
Look.
electron microscopy. - ANSWER-darker images mean denser material
Light images mean less dense material!
Cells (plants, most prokaryotes) have a cell wall. - ANSWER-Rigid, cell wall.
Provides shape and protection.
Every cell is surrounded by a plasma membrane. - ANSWER---Allows cells to
maintain a constant internal environment.
--acts as a selectively permeable barrier.
,--is an interference for cells where info is received from adjacent cells and
extracellular signals.
-has molecules that are responsible of binding and adhering to cells.
some bacteria have Capsules - ANSWER-thick layer of carbs and proteins.
extra protection from the outside of a cell.
--allows to stick to other cells
-Even if they possess a capsule, bacteria does NOT rely on the capsule for survival!
**non essential, but does have an advantage.
- ANSWER-
Difference from bacteria and archaea: - ANSWER-Bacteria have PEPTIDOGLYCAN
in their cell wall.
In lateral gene transfer, genes are ______. - ANSWER-moved from one species to
another
Eukaryotic cells are much larger than bacteria and archaea! - ANSWER-Prokaryotic
cells measure 1-10 micrometer in diameter.
Eukaryotic cells measure 5-100 micrometer in diameter.
, Benefits of compartmentalization..... - ANSWER-Incompatible chemical rxns can
be separated!
Chemical reactions become more efficient.
Difference between Prokaryotic cells and Eukaryotic cells. - ANSWER-1. Eukaryotic
chromosomes are found inside a membrane-bound compartment called the
NUCLEUS!
2. Eukaryotic cells are LARGER than the prokaryote.
3. Eukaryotic cells contain extensive amounts of internal membrane.
4. Eukaryotic cells feature a diverse and dynamic cytoskeleton.
Cytosol - ANSWER-The fluid portion between the plasma membrane and
organelles.
Nucleus: - ANSWER--contains the chromosomes
- functions as an administrative center for info storage and processing.
-biggest and most organized.
enclosed by a unique structure, called the nuclear envelope. Complex double
membrane.
Nuclear Lamina - ANSWER-Nuclear envelope in the nucleus has this..
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