Biology Questions and Answers
- How do chloroplasts
multiply?
Like mitochondria chloroplasts have
their own DNA, RNAthey self-replicate thr and ribosomough binaryes and
division.
- How can the hypothesis
that asserts that chloroplasts
as well as mitochondria were
primitive prokaryotes that
associated in mutualism with
primitive anaerobic eukaryotic
cells be corroborated?
The described hypothesis is known as
the endosymbioticevolutionary origin of mitochon hypothesis about thedria and
choloroplasts.
Mutualismand chloroplasts is explained as: mitochon can offer energy anddria
nutrients to the cell in exchangprotection. The hypothesis is e for
strengthened since those organelles
have their own DNA, RNAsynthesis machinery and they divide and protein
themselves through binary division like
bacteria do.
- What are the main
structures of chloroplasts?
Chloroplasts are involvemembrane layers, the outer and thed by two (^)
inner membranes. Inside the organellethe formative unit is called the granum, (^)
a coin-shaped structure that, piled with
others grana, fcalled thylakoids. Torms sevhe thylakoidseral structures fill the (^)
chloroplast and an intergrana
membrane permeates thorganelle. e interior of the
- In which chloroplast
structure are chlorophyll
molecules found?
Chlorophyll molorganized manner in order to enhanceecules are placed in an
the exposure to light on the thylakoid
surfaces. - What do ATP and ADP
mean? What are the roles of
these molecules for the
cellular energetic metabolism?
ATP is an abbreviation of adenosine
triphosphate, a moladenosine bound to threcule made ofee inorganic (^)
phosphates. ADP is an abbreviation of
adenosine of phosphate bound to adenosine. ATPdiphosphate, two molecules (^)
is a molecule cell. When ATP hthat stores energy for theydrolyzes and becomes (^)
ADP energy is liberated and then
consumereactionsd by several m of the organism.etabolic
- What is ADP
phosphorylation? What
respectively are
photophosphorylation and
oxidative phosphorylation?
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