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
PSYCHO15rus [73]
3 years ago
9

According to the theory of endosymbiosis, the origin of chloroplasts probably involved: a. engulfing of small photosynthetic pro

karyotes by larger cell. b. the formation of colonies of cyanobacteria. c. the formation of cell walls around the photosynthetic pigments. d. the increasing amount of oxygen for the ATP molecule. e. All of the above are correct.
Biology
1 answer:
DerKrebs [107]3 years ago
7 0

Answer:

A. engulfing of small photosynthetic prokaryotes by larger cell

Explanation:

The endosymbiotic theory states that some of the organelles in today's eukaryotic cells were once prokaryotic microbes. In this theory, the first eukaryotic cell was probably an amoeba-like cell that got nutrients by phagocytosis and contained a nucleus that formed when a piece of the cytoplasmic membrane pinched off around the chromosomes. Some of these amoeba-like organisms ingested prokaryotic cells that then survived within the organism and developed a symbiotic relationship.

Some Evidence for this is based on the following:

1. Chloroplasts are the same size as prokaryotic cells, divide by binary fission, and, like bacteria, have Fts proteins at their division plane.

2. The mitochondria are the same size as prokaryotic cells, divide by binary fission, and the mitochondria of some protists have Fts homologs at their division plane.

3. Mitochondria and chloroplasts have their own DNA that is circular, not linear.

4. Mitochondria and chloroplasts have their own ribosomes that have 30S and 50S subunits, not 40S and 60S.

5. Several more primitive eukaryotic microbes, such as Giardia and Trichomonas have a nuclear membrane but no mitochondria.

You might be interested in
Which six elements provide most of the mass of the human body? 0 C, N, P S, H, 0 0 C, Mg, P, H, O, N O Mn, Na ), H, Ca, o O Ur,
Natali5045456 [20]

Answer:

H, He. 2, Li, Be, B, C, N, O, F, Ne. 3, Na, Mg, Al, Si, P, S, Cl, Ar. 4, K, Ca, Sc, Ti ... 7, Th, Pa, U, Np, Pu, Am, Cm, Bk, Cf, Es, Fm, Md, No, Lr ... (Atomic mass is also referred to as atomic weight, but the term "mass" is more ... One molecule of water (H2O) would weigh 18.02 amu (2×1.00797 amu for H + ... 6, C, Carbon, 12.011.

Explanation:

6 0
2 years ago
A butterfly emerging from a cocoon is an example of which characteristic of life
lukranit [14]

Answer:

bio -characteristic of life

4 0
3 years ago
Read 2 more answers
What organelle must temporarily break apart so that the dna can divide up?
natita [175]
The organelle that temporarily breaks apart so that the DNA can divide up is the nucleus. Nucleus store most of the cell's DNA it is responsible for carrying genetic information. It is also responsible for generating genetic expression to ensure the proper activities of the entire cells. 
3 0
3 years ago
Which safety rule is MOST important when smelling the product of a chemical reaction?
nekit [7.7K]
Use a wafting motion 

8 0
3 years ago
I need some biology help
kotykmax [81]

What is the question your trying to have answered?

8 0
3 years ago
Other questions:
  • Which of the following is NOT true of phospholipid bilayers?
    15·1 answer
  • Eli wants to reduce his impact on the environment. Which activity should Eli do to help the environment and his community?
    12·1 answer
  • The long-term survival of any species of an organism is possible only if the organism can
    12·1 answer
  • The somatosensory cortex in the human brain processes information about _____.
    12·1 answer
  • Where does water come from ?
    14·2 answers
  • What is the likeness that the child will have wavy hair?
    12·1 answer
  • Plz help me this is due soon<br> anwser bot questions
    10·1 answer
  • Give two differences between the structure of bacterial cells and the structure of plant cells.
    8·1 answer
  • What are the functions of the digestive system?
    9·1 answer
  • Which organ systems are present?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!