Biology (Whole Unit) Flashcards
What is the total magnification of a 4x low power objective and a 10x eyepiece?
40x
Which 2 parts of the microscope should you hold when carrying it?
The arm and the base
What part of the microscope is responsible for adjusting the amount of light?
The Iris Diaphram
What is the purpose of a mitochondria?
To produce all the energy for the cell
Why do the mitochondria have a largely folded inner membrane?
To increase the capacity of the mitochondrion to synthesize ATP
What are 3 organelles found in plant cells but not in animal cells?
Cell wall, chloroplasts, large central vacuole
Why does a plant cell need a cell wall?
To support the structure of the plant
Why does a plant cell need chloroplasts?
To perform photosynthesis
Why does a plant cell need a large central vacuole?
To store water, nutrients, and waste products
How are ribosomes involved in protein synthesis?
They translate the genetic code transcribed in mRNA into amino acids
How is the rough ER involved in protein synthesis?
The ribosomes anchored to it are engaged in the synthesis of either membrane proteins or proteins made for secretion
How is the the Golgi body involved in protein synthesis?
The proteins get further processed after going through the ER
What are the 6 stages of cell division? (In order)
Interphase, Prophase, Metaphase, Anaphase, Telophase, and Cytokinesis
What are the 3 parts in Interphase?
1) DNA doubles
2) Organelles double
3) Cell volumes doubles
What are the 3 parts in Prophase?
1) Nuclear membrane disappears
2) Chromosomes are formed from chromatin
3) Centrioles/spindle fibres form
