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Effectus [21]
3 years ago
12

Earth’s first life forms were __________. aerobic cyanobacteria photosynthetic chemoautotrophs

Biology
2 answers:
SCORPION-xisa [38]3 years ago
4 0
Photosynthetic is the correct answer,
Delicious77 [7]3 years ago
3 0
The answer to your question would be Photosynthetic 
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Stolb23 [73]

Answer:Its photosynthesis

Explanation:

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2 years ago
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What statement is true about a cell
vagabundo [1.1K]

Answer:

If you have anyone of these answer choices..Its D.All of the Above

Explanation:

A. Cells are the structures that contain all of the materials necessary for life

B. Cells are found in all organisms

C. Cells are sometimes specialized for particular functions

D. All of the above

7 0
3 years ago
N the early 1900's a scientist hypothesized a link between DNA and the production of proteins in the cytoplasm. However, the fac
Dovator [93]

The plasma membrane or the cell membrane is the one that protects the cytoplasm of a cell. It is mostly composed of lipids and proteins. It has a phospholipid bilayer that controls the entering and exiting of molecules in the cell and at the same time, provides protection for the cell or plasma membrane. It has polar head and a nonpolar tail. Proteins embedded within the phospholipid bilayer have the same function of the plasma membrane that includes selective transport. The phospholipid bilayer consists mainly of the lipid molecules.

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3 years ago
How is cell differentiation different than mitosis?
erastovalidia [21]

Cell differentiation is the process by which cells specialize to achieve their required functions. In order for a cell to differentiate, it will express specific genes. ... Importantly, mitosis produces cells that are identical to each other (clones).

8 0
3 years ago
Which of the following statements about the germ layers is NOT correct?
ahrayia [7]

Answer:

The endoderm gives rise to the nervous system.

Explanation:

Gastrulation is the process that occurs during the third week of embryonic development and includes transformation of embryonic disc with epiblast and hypoblast into a three layered embryonic disc made up of ectoderm, mesoderm and endoderm. These are the three primary germ layers and give rise to various tissues and body organs.

Endoderm of the embryo give rise to epithelial lining of gastrointestinal tract (except the buccal cavity), respiratory tracts and other organs such as gallbladder, liver,etc. Mesoderm forms connective tissues such as bones as well as muscles and peritoneum. All the tissues of nervous system and epidermis of skin are derived from ectoderm.

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