Why do scientists think that the first true cells were probably anaerobic?

Answers

Answer 1

Answer: anaerobic because there was little oxygen; and
heterotrophic because autotrophism (the ability to manufacture your own food) is a more complex process ... the first cells would have derived energy from surrounding organic molecules, which makes them heterotrophic.

Related Questions

Sort the following into biotic or abiotic factors in ecosystems:Whale Clock Water Fish Paper Glass Aluminum Wooden Ruler Sand Clouds Corpse Snail Steak Pork Chops Salad Bread Plant Hair Finger Nails Pipe Cotton Fabric Wool Gold Plastic Grapes Air Options: Option 1: Biotic factors Option 2: Abiotic factors Option 3: Mixed (both biotic and abiotic factors) Option 4: None of the above
if Pluto is currently 300 light years away from earth how far is Pluto from earth in meters in scientific notation
During the process of photosynthesis, plants release what element in the form of a gas?
What was signiﬁcant about the fossils Darwin found?
HELP DUE AT 4! THIS DEPENDS ON MY GRADE okay here is the model now I need help w the question: How many males in this model show the trait? A. One B. Seven C. Three D. Four

If the heart becomes damaged or weakened, how will this affect the body’s systems? A. The muscular system will strengthen the heart. B. Only the nervous system will be unable to function. C. The circulatory system will not function well, which will affect all other body systems. D. Only the circulatory and respiratory systems will be affected.

Answers

If the heart becomes damaged or weakened, then the circulatory system will not function well, which will affect all other body systems (Option C).

The heart is a fundamental organ that forms part ofthe circulatory system.

This system (circulatory system) consists of blood, blood vessels (i.e., veins, arteries, capillaries), and the heart, which work together to carry out oxygen and nutrients to all body cells.

The heart is an organ responsible for pumping blood through these vessels to all cells of the body.

In conclusion, if the heart becomes damaged or weakened, then the circulatory system will not function well, which will affect all other body systems (Option C).

Learn more in:

brainly.com/question/3305440

the correct answer is c.the circulatory system will not fuction well,which will affect all other body systems.

The phase of cell division in which chromosomes align on the spindle equator halfway between the spindle poles is A. prophase.
B. telophase.
C. anaphase.
D. metaphase.

Answers

Metaphase, I remember this because "meta" sounds like middle.

What will happen if your body doesnt have skin

Answers

Easy Infection

Pain

Death

If Your body doesn't have skin then a person will be in so much pain and eventually die out of shock.

Hope That Helped ;)

i guess you will have a bacteria in your body easier than with your skin on and yo would have a infection.

Regulating the manufacture of _____ is the function of RNA.
protein
cells
energy

Answers

the answer is protein

Regulating the manufacture of _____ is the function of RNA.

answer is protein

1)While the Lophophorata (this groups includes worms and mollusks) are a well-recognized group, phylogenetic (family tree) studies do not yet agree on the identity of their closest relatives.True
False
2)The marine flatworms (polycladids) are the smallest of the free-living flatworms, sometimes reaching lengths of 15 centimeters.
True
False
3)Bilateria is a classification within Animalia, and are characterized by animals which are bilaterally symmetrical (with a left and a right side to their bodies).
True
False

Answers

The right answer for the question that is being asked and shown above is that: "TRUE; TRUE; TRUE" (1) While the Lophophorata (this groups includes worms and mollusks) are a well-recognized group, phylogenetic (family tree) studies do not yet agree on the identity of their closest relatives. (2)The marine flatworms (polycladids) are the smallest of the free-living flatworms, sometimes reaching lengths of 15 centimeters. (3)Bilateria is a classification within Animalia, and are characterized by animals which are bilaterally symmetrical (with a left and a right side to their bodies).

What stomach secretion is necessary for normal hemoglobin production in RBCs?A. HCl
B. pepsinogen
C. intrinsic factor
D. gastric lipase

Answers

Instrinsic factor is the stomach secretion necessary for normal hemoglobin production in RBCs.

Other Questions

"Platyhelminthes" exhibit: a. Radial symmetry and no cephalization b. Bilateral symmetry and no cephalization c. Radial symmetry and cephalization d. Bilateral symmetry and cephalization e. none of the above

In the human body, only certain cells undergo fertilization. what is another process that only these type of cells undergo?

The La Brea Tar Pits are _______.a. a valuable source of petroleum b. filled with tar made from mammals c. filled with asphalt d. a and b only

in chickens, congenital baldness is due to a z-linked recessive gene. a bald rooster is mated with a normal hen. the f1 from this cross are interbred to produce the f2. give the genotypes and phenotypes, along with their expected proportion for the f1 and f2 progeny.