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Airida [17]
3 years ago
11

Which type of protist is photosynthetic and unicellular with a silica shell?

Biology
2 answers:
Marat540 [252]3 years ago
8 0

Answer:

C.diatoms

Have a good day.

Len [333]3 years ago
7 0
The answer is C .......
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From the sequencing of the human genome, we believe that there are approximately 21,000 protein-coding genes in the genome, of w
Nadusha1986 [10]

Answer:

The best answer to the question: If every gene has a tissue-specific and signal-dependent transcription pattern, how can such a small number of transcriptional regulatory proteins generate a much larger set of transcriptional patterns? Would be:

Because transcriptional regulators, which are the ones responsible for initiating, and stopping, transcription of RNA into protein, often work in pairs, one goes with the other, and thus increase the regulatory capabilities over gene expression so that the genes translated into RNA and then transcribed into aminoacids in protein chains, actually code for the correct protein types.

These regulators will both stand, as appropriate, on a specific gene to promote its transcription, or prevent it, depending on the different signaling mechanisms received.

4 0
2 years ago
when a single cell of E. coli reproduces it first duplicates it's dna next the cell elongates as each copy of dna is pulled towa
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4 0
2 years ago
Each red blood cell is shaped as a biconcave disk. This allows it to?
kipiarov [429]

Red blood cell is shaped as a biconcave discs, this shape allows them to squeeze through small capillaries.

The biconcave shape of the cell allows oxygen exchange at a constant rate over the largest possible area. The biconcave shape increases the cell's surface area compared to a flat disk of the same size. The greater surface area makes it easier for gases to move into and out of the red blood cell.

The biconcave shape provides a large surface area compared to the volume of the red blood cell, allowing diffusion to happen efficiently. This shape optimizes the ratio of surface area to volume, facilitating gas exchange. It also enables them to fold up as they move through narrow blood vessels.

To learn more about biconcave discs ,here

brainly.com/question/8193368

#SPJ4

6 0
1 year ago
Why is water pollution a concern if water is continuously cycled through Earth’s systems?
Mice21 [21]
Chemicals in the water rise up through the water process and spread over the Earth.

7 0
3 years ago
Which of the following best describes the flow of energy in the Everglades food web shown below? (2 points)
antiseptic1488 [7]
The correct answer is B.
A food web typically start with a plant which serves as the primary producer of food for the other living organisms that are in the food web. The food web is made up of many tropic level, only about 10% of the energy in one tropic level is transferred to the next trophic level. 
Looking at option B, you will discover that the food web start with a plant which is mangrove. Insects feed on mangrove, southern leopard frog feed on insects and raccoon feed on American alligator.
8 0
3 years ago
Read 2 more answers
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