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slavikrds [6]
3 years ago
13

__________ were the first organisms in the history of life on earth that could use solar energy to build organic compounds from

carbon dioxide, and in the process break down water molecules to release oxygen.
Biology
1 answer:
Talja [164]3 years ago
4 0

Cyanobacteria, hope that helps

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Magma that cools very slowly deep beneath the surface forms minerals with what type of crystals? a. small b. large c. very hard
omeli [17]
B. the more air pockets and the larger the crystal. It cools underground, with less oxygen
8 0
4 years ago
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What is the role of carbon storage in organisms?? Plz answer fast in paragraph form if possible
belka [17]
Animals and plants need to get rid of carbon dioxide gas through a process called respiration. Carbon moves from fossil fuels to the atmosphere when fuels are burned. When humans burn fossil fuels to power factories, power plants, cars and trucks, most of the carbon quickly enters the atmosphere as carbon dioxide gas.
3 0
3 years ago
An E. coli colony grew on minimal medium supplemented with arginine and leucine. However, bacteria from this colony are unable t
umka2103 [35]

Answer:

the genotype of the bacteria in this E.coli colony is arg^+leu^-met^+

Explanation:

The organism which, due to the lack of particular genes, can not synthesize a particular metabolite or nutrient by itself and needs the nutrient to the growing supplement is called auxotroph. The colony E.coli began to grow on a limited medium with arginine and leucine, and not with arginine and methionine in the above mentioned case. Leucine is therefore a vital metabolite required to grow bacteria and bacteria that do not contain the leu  gene.

Therefore. the genotype of the bacteria in this E.coli colony is arg^+leu^-met^+

8 0
4 years ago
Describe why translation of an mrna can start before transcription of the mrna is complete in prokaryotes but not in eukaryotes.
Lera25 [3.4K]

Answer:

<h2>In prokaryotes both transcription and translation occurs in cytoplasm (they lack true nucleus) while in eukaryotes, transcription occurs in nucleus while translation occurs in cytoplasm.</h2>

Explanation:

1. Prokaryotes do not have nucleus, so both transcription and translation occurs in the cytoplasm, therefor translation start before the completion of transcription.

2. While in eukaryotes, they have true nucleus, and there protein synthesis machinery (ribosomes) and  is situated in the cytoplasm.

So in eukaryotes transcription occurs in the nucleus, and after the completion of transcription, mRNA is processed and finally export into cytoplasm for translation.

3 0
4 years ago
In rabbits, black fur (B) is dominant to white fur (b) A purebred black furred male is bred with a female that had the recessive
Ronch [10]

Answer:

BB x bb

Bb

Bb

Explanation: When a purebred dominant trait is bred with a purebred recessive trait then the offspring will always have the dominant and recessive trait.

4 0
3 years ago
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