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Ne4ueva [31]
2 years ago
9

Which organisms were the earliest oxygen-producing life-forms?

Biology
1 answer:
mart [117]2 years ago
5 0

Answer:

The earliest oxygen-producing life forms were Cyanobacteria. Besides Cyanobacteria, these tiny organisms have another name known as blue-green algae

Explanation:Some scientists think that 2.4 billion years ago is when organisms called cyanobacteria first evolved, which could perform oxygen-producing (oxygenic) photosynthesis. Other scientist think that cyanobacteria evolved long before 2.4 billion years ago but something prevented oxygen from accumulating in the air

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Lantana can cause death in cattle. how long does this process take?
bezimeni [28]
The correct option is C.
Lantana is a tropical evergreen shrub which is usually cultivated as ornamental flowers. It is a plant that threatening livestock especially in Australia. The signs of lantana poisoning in livestock include: excessive skin sensitivity to sunlight, liver damage, yellow coloration of the white part of the eyes, reddening of the eyes, swelling of the ears, etc.
If the poisoning case is severe, the animal death will occur between two to four days, but generally, untreated animals usually die within one to three weeks.
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3 years ago
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Paul [167]

Answer:

I would think Channel proteins but I could be wrong

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2 years ago
Which are common to both aerobic and anaerobic respiration? Select three options.
Gnom [1K]

Answer:

A). glucose

D). carbon dioxide

E). energy

Explanation:

Aerobic Respiration is characterized as the respiration process(metabolic reaction or breaking down of glucose into energy) that occurs in presence of oxygen while anaerobic respiration takes place in the absence of oxygen. The things that are common in both include glucose, energy, and carbon dioxide. <u>Glucose is broken down in both processes(with or without oxygen) while energy and CO2 are the byproducts/released products of the process</u>. Thus, <u>options A, D, and E</u> are the correct answers.

6 0
2 years ago
Read 2 more answers
(03.05 MC) In which of the following ways is DNA replication different from DNA transcription? (2 points) New cells can only be
Softa [21]
The correct option is D.
Transcription is the process by which the information in a DNA molecule is copied into an mRNA strand. Replication is the process by which two new strands of DNA are formed from a single parent DNA. Both the DNA and the RNA are composed of four different bases, three of the bases are the same while one is different for the DNA and RNA. It is only the RNA that has uracil while it is only the DNA that has thymine. Thus, Uracil is involved during the process of transcription since it is an mRNA strand that is formed while thymine is the one involved during the process of replication since it is a DNA molecule that is formed.<span />
3 0
3 years ago
Bacteria, like the Lactobacillus acidophilus use sugar as an energy source for anaerobic cellular respiration. This process prod
Alexandra [31]

Answer: Lactic acid fermentation

Explanation:

The lactic acid fermentation can be defined as the process by which sugar is being converted into lactic acid.

There is no emission of carbon dioxide during the whole process. In case of curd formation. The bacteria convert the milk into curd and provides it a sour taste.

It is converted by help of bacteria known as Lactobacillus acidophillus. This method is very frequently in many of food processing industry.

6 0
3 years ago
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