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kondaur [170]
3 years ago
8

7. Why do scientists think that photosynthetic prokaryotes were probably not the first life forms on Earth?

Biology
2 answers:
Rasek [7]3 years ago
8 0
Microbes were the first inhabitants of Earth. They are single-celled organisms, like bacteria, fungi, and protozoa. Microbes are still found just about everywhere today, thriving in boiling hot thermal springs 
Hope this Helps :D 
chubhunter [2.5K]3 years ago
4 0
Because photosynthesis is  Four stage sequence of how life first<span> developed on </span>Earth way in the being of time <span>small organic molecules </span><span />
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Gene expression products are packaged and modified by the addition and deletion of functional groups in this structure of the ce
pishuonlain [190]

Answer:

Golgi apparatus

Explanation:

Once the protein products are packaged in the endoplasmic reticulum into vesicles that fuse to the Golgi apparatus, these protein products are modified by enzymes. These changes are called post-translational modifications and include the addition of carbohydrates, lipids or some other functional groups. All these modifications are key for protein functionality. After this process is concluded, functional proteins are packaged into vesicles and released to their final destination inside or outside the cell.

3 0
3 years ago
During anaphase, what structures are attached to the centromeres?
Effectus [21]

✧・゚: *✧・゚:*    *:・゚✧*:・゚✧

                  Hello!

✧・゚: *✧・゚:*    *:・゚✧*:・゚✧

❖ Structures called spindle fibers are attached to the centromeres. Spindle fibers divide the genetic material in a cell (sister chromatids).

~ ʜᴏᴘᴇ ᴛʜɪꜱ ʜᴇʟᴘꜱ! :) ♡

~ ᴄʟᴏᴜᴛᴀɴꜱᴡᴇʀꜱ

8 0
3 years ago
Explain why two oxygen atoms bond to a carbon atom to make a stable molecule of a carbon dioxide?
schepotkina [342]

Answer:

10 H atoms combine with 5 oxygen to form 5 water molecules.

Explanation:

those substances which having low boiling point or low melting point such as water they form covalent bond.

Covalent bonds form between non-metal atoms. Each bond consists of a shared pair of electrons, and is very strong. Simple molecular substances and giant covalent structures have different properties.

3 0
3 years ago
Energy used by the body to perform muscular contractions is called adenosine diphosphate, or ADP.
Bezzdna [24]

Answer:

The energy used for muscular cont ration is ATP(adenosine triphosphate) This is the energy currency produced in the mitochondrial during cellular respiration.

During muscles contraction.The ATPs is broken down to ADP and Pi.

This is the breakdown of energy rich bonds binding phosphate ions with ATP.The breakdown of the bonds produced -32kJper the 3 bonds in ATP. Therefore as each bond is broken, energy is produced for muscle contraction

It is an exergonic reaction with production of heat.

Thus ATP is used for muscle contraction.ADP is the intermediate of ATP when one Phosphate is removed during the breakdown.

Thus the sequence is Adenosine triphosphate (3 phosphate) to Adenosine diphosphate(2 phosphate) to Adenosine monophosphate (1 phosphate)

Each bond breakin gives equal energy of -32kJpermol.

Explanation:

Explanation:

3 0
3 years ago
Which practice contributes the most to environmental pollution?
vagabundo [1.1K]
Cultural practices contributes the most to environmental pollution because <span>by making a fire produces the smoke which pollutes the air , that how culture practices contribute to air pollution.</span>
5 0
3 years ago
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