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2 years ago

At the time of the origin of LUCA which mode of nutrition was NOT being used?

Biology

1 answer:

Vinvika [58]2 years ago

6 0

Answer:

C. Photoautotrophs-oxygenic.

Explanation:

LUCA is an abbreviation of the ‘Last Universal Common Ancestor’. The LUCA was a microorganism which lived around 4 billion years ago. The evidence had shown that the LUCA was lived deep underground in hydrothermal vents. These vents were rich in iron-sulphur. It did not use air but made its food from the metal-rich environment surrounding it. It made organic compounds such as ammonia for its metabolism from elements such as hydrogen, carbon dioxide and nitrogen.

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In nerve cells, the centrosome is located near the nucleus. Vesicles move from near the nucleus to the end of long extensions (a

lord [1]

Answer:

Plus end and kinesin.

Explanation:

Three important cytoskeleton components are microtubules, microfilaments and intermediate filaments. Microtubules are the polymer of tubulin and plays an important role in the movement of cell organelles and its structure.

Microtubules shows the process of polymerization and depolymerization at different ends. The plus end shows the polymerization and minus end shows the depolymerization process. The kinesin protein is required for the process of polymerization.

Thus, the correct answer is option (D).

7 0

2 years ago

No links and i know this isn't actually biology

EleoNora [17]

Answer:

characteristics

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Explanation:

the people needs asun because the sun is shining and all tee time people needs the sun

7 0

2 years ago

The evaporation of water from the stomata is known as...

saw5 [17]

During the day time, due to intense heat, the water present in stomata vaporizes, and this

process is known as Transpiration .

So, correct option is :

C: transpiration

5 0

1 year ago

5 Which statement belongs in the region marked X? rudy made this Venn diagram comparing interphase and cytokinesis. O is the lon

Romashka [77]

Question:

Trudy made this Venn diagram comparing interphase and cytokinesis.

Which statement belongs in the region marked X? (image attached)

Answer options:

Is the longest stage
DNA is copied
The number of nuclei doubles
The number of cells doubles

Answer:

The number of cells doubles

Explanation:

Cytokinesis describes the splitting of the cytoplasm after mitosis. During interphase, the DNA is replicated. During mitosis, the DNA condenses into chromosomes, and the chromosomes are aligned and separated to opposite ends of the cell. During cytokinesis, the cell separates into two daughter cells.

6 0

2 years ago

What would happen if new cells were larger than the original cell?

natta225 [31]

Answer:

the cell membrane would expands

Explanation:

8 0

2 years ago