1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
pychu [463]
3 years ago
6

With the endosymbiotic hypothesis in mind, what structure within modern-day chloroplasts is likely derived from the cytoplasm of

an ancestral cyanobacterium that took up residence within a eukaryotic cell?
Biology
1 answer:
777dan777 [17]3 years ago
4 0

Inner membrane of the chloroplasts

Explanation:

The present day eukayrotes are all considered to be derived from its original ancestor – the cyanobacteria.

Earlier, photosynthesis by the first photoautotrophs took place utilizing hydrogen sulphide as the electron donor. However, it was later when the cyanobacteria, which were originally residing in the mitochondria of an eukaryotic cell under an endosymbiotic relationship, developed into true chloroplasts, the use of water as electron donor to perform photosynthesis began.  

The cyanobacteria were aerobic in nature and required oxygen to survive. They evolved the chloroplasts covered with an external protective membrane and an internal membrane. It is the internal membrane which contains all the necessary organelles or components necessary for photosynthesis like thyllakoids, stroma etc which helped them to utilize water as an electron donor during photosynthesis like all the eukaryotes.  

You might be interested in
As skin cells are _____________, meaning they are mitotically active and continue to transition through the cell cycle, the woun
jarptica [38.1K]
The answer to this question would be labile.

A permanent cell is the one that will not divide after fully developed. This includes the heart and brain cells. That is why when these organs damaged there will be a permanent loss of function.
Stable cell only divides in some occasion. The example would be liver cells or kidney cells.
4 0
3 years ago
Which is a scientific question?
nikdorinn [45]
A. can cats learn to sit down on command
4 0
3 years ago
Cooler places have
Sever21 [200]

Answer:

The answer is B lower pressure

Explanation:

because in cooler places its cold and warm mixed

6 0
3 years ago
Read 2 more answers
The absence of which of these will not affect photosynthesis is - oxygen, Carbon dioxide, water, Chlorophyll, light. Give reason
In-s [12.5K]

Answer:

Oxygen

Explanation:

Oxygen is the by product of photolysis during photosynthesis whereby water molecules are split to form protons (H+ ions), electrons and oxygen (by product).

Oxygen is not needed during any of the reactions in photosynthesis and Calvin cycle and will not affect the rate of photosynthesis or possibility of photosynthesis occurring. However, it will affect the process of aerobic respiration instead.

Carbon dioxide is needed in carbon fixation during the Calvin cycle. Without it, 6 carbon sugars cannot be formed.

Water is needed for photolysis to produce protons (maintain the electrochemical gradient) and electrons (to replenish lost electrons)

Chlorophyll are pigments that harvest light energy to excite electrons produced from photolysis of water to be passed down the electron transport chain.

Light is needed as a source of energy to energise the electrons

5 0
3 years ago
An increase in the greenhouse effect, increases the production of what gas?
jeka57 [31]

The green house effect is a natural process that warms the Earth surface.

((Carbon dioxide))

7 0
3 years ago
Other questions:
  • What are positive impacts of algae? How is it used?
    11·1 answer
  • An organism is made of many cells, cannot move on its own, and absorbs food from its environment. What kingdom does it belong to
    9·1 answer
  • What are the 5 functions of nematodes in the soil
    7·2 answers
  • Under what circumstances does membrane transport require energy
    7·1 answer
  • Tall plants are dominant to short plants. What is the outcome if two short plants are crossed.
    8·2 answers
  • Plant cells perform photosynthesis,which occurs in the
    9·2 answers
  • U guys su.ck ive asked this like 10 times
    6·1 answer
  • Which of the following statements best describes what happens during exercise?
    8·1 answer
  • 8. What is the probability that an Rr organism and an Rr organism will
    11·1 answer
  • The answers are
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!