answer.
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
Ray Of Light [21]
1 year ago
9

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:
Liono4ka [1.6K]1 year ago
8 0

The chloroplasts had inner membrane

Explanation:

The primitive photoautotrophs utilized hydrogen sulphide as the electron donor to perform photosynthesis for energy production.  

Later upon understanding the endosymbiotic relationship of cyanobacteria which resided in the mitochondria of a eukaryotic host cell, the use of chloroplasts for photosynthesis was understood.  

Generations after generations led to the development of chloroplasts by the cyanobacteria due to this symbiotic relationships which developed into the chloroplasts.

The unique presence of the inner membrane and its components like the stroma, thyllakoids helped the organism to utilize water as the electron donor for photosynthesis like the present day eukaryotes. This is the main reason why cyanobacteria is considered as the ancestor for eukaryotes.

You might be interested in
4. Discuss the concept of blended unity of mind and body, its implications for school physical activity programs, its implicatio
iragen [17]

Explanation:

This statement is correct because the concept of integrating body and mind in physical activity was responsible for the expansion of physical activity, in addition to activities that promote only the well-being of the body aesthetically, but as a set of activities responsible for improvement of health, intelligence, emotional, creativity, as well as an instrument of social integration. The practice of physical activity releases endorphins in the brain, which is a natural substance produced by the brain that is associated with well-being, mood and joy, and this effect occurs during and after physical activity.

6 0
1 year ago
Drag labels at left into the appropriate targets on the right to complete this concept map about oxidative phosphorylation
almond37 [142]

*The key function of each of the two photosystems is to absorb light and convert the energy of the absorbed light into redox energy, which drives electron transport.

In PS II (the first photosystem in the sequence), P680 is oxidized (which in turn oxidizes water), and the PS II primary electron acceptor is reduced (which in turn reduces the electron transport chain between the photosystems).

In PS I, the PS I primary electron acceptor is reduced (which in turn reduces other compounds that ultimately reduce NADP+ to NADPH), and P700 is oxidized (which in turn oxidizes the electron transport chain between the photosystems).

8 0
1 year ago
Which enzymes in the citric acid cycle catalyze oxidative decarboxylation reactions?
dlinn [17]

In the citric acid cycle (also known as Kreb’s Cycle), the enzyme that catalyzes oxidative decarboxylation reactions is α-Ketoglutarate dehydrogenase. The oxidative decarboxylation reaction is the irreversible stage of the citric acid cycle; it generates NADH (equivalent of 2.5 ATP), and regenerates the 4C chain (CoA is excluded).

8 0
2 years ago
Read 2 more answers
Which statements could be categorized in the "Asexual" section of the Venn diagram? Check all that apply
EastWind [94]

Answer:

The right answer are : mitosis, diploid cells, and identical DNA.

Explanation:

The answers "two cell divisions" and "gametes" refers to a division by meiosis which is a sexual reproduction.

Asexual reproduction or asexual reproduction is a mode of reproduction, which - as opposed to sexual reproduction - corresponds to the capacity of living organisms to multiply alone, without a partner, without involving the fusion of two gametes of opposite sexes. Asexual reproduction is observed in multicellular (animal and plant) and unicellular organisms. In botany, the term often used for the asexual multiplication of plants is vegetative multiplication. In all cases of asexual reproduction, the result is identical to the mother.

7 0
2 years ago
When a neuron's membrane is at rest, the concentration gradient tends to move potassium ____ the cell and the electrical gradien
Phantasy [73]
Go to quizlet.com they give you all types of information

5 0
2 years ago
Other questions:
  • The subatomic particles/units that govern potential chemical reactions among elements are?
    6·1 answer
  • A cylinder with a mass of 12 g has a radius measuring 2 cm and a height of 6 cm. What is its density? 0.05 g/cm3 0.16 g/cm3 1 g/
    12·2 answers
  • What was found by astronomers who noticed a strange pattern in the orbit of uranus?
    5·1 answer
  • The ________ is an example of a modern convergent boundary where two continents meet.
    7·2 answers
  • In an aerosol can used for spray paint, a highly compressed "propellant" helps move the liquid into a "dip tube" so that it can
    12·2 answers
  • What are the four major resources that affect population density <br><br><br> Thx for your help:)
    15·1 answer
  • Even though a motion picture actually consists of a series of still frames, we perceive them conveying continuous movement. This
    5·2 answers
  • You are invited to participate in a debate about the concept of evolution. Construct an opening statement supporting evolution,
    11·1 answer
  • Which of the following is an example of adaptation? A rabbit population in which all of the members change fur color from brown
    15·1 answer
  • ¿Cómo es posible que se hayan encontrado antiguos sedimentos glaciares en zonas como la India situada junto al ecuador?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!