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tia_tia [17]
2 years ago
12

Prior to the work of ____________, scientists did not distinguish between members of the Archaea and the Bacteria.

Biology
2 answers:
Mice21 [21]2 years ago
4 0

Answer:

Carl Richard Woese

Explanation:

He was an American microbiologist and biophysicist. His main focus was upon genetic codification.

in 1977, Carl Woese and George E. Fox discovered a kind of microbial life which they called the “archaebacteria”. It composed "a third kingdom" of life different from bacteria, plants and animals. His three-domain system, divided life into 23 main divisions, incorporated within three domains: Bacteria, Archaea, and Eucarya.

saw5 [17]2 years ago
3 0

Answer:

Carl Woese

Explanation:

Earlier scientists used to divide organisms in two major groups, the prokaryotes which consisted of bacteria and the eukaryotes which consisted of all the other higher organisms. Carl Woese divided organisms in three groups: Bacteria, Archaea and Eukaryotes. He concluded that Archaea are more similar to eukaryotes than to bacteria. Previously Archaea were thought to inhabit only hostile extreme places but now they have also been discovered in other less hostile environment.

Archaea are similar to bacteria when it comes to morphology. But the process of translation and transcription is significantly different from bacteria and resembles eukaryotes more. Their cell membrane have unique ether linked lipids for more stability and they have some unique metabolic pathways like methanogenesis.

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Answer:

Eat healthy stuff

Explanation:

4 0
2 years ago
Several students were having a discussion about the role of chromosomes in inheriting traits.
serious [3.7K]

Answer:

Chromosomes are the structures found in the nucleus of a cell. They are made from DNA, containing hereditary information in the form of genes that control how an organism will look and behave.  

Chromosomes come in homologous pairs (one from each parent) that each contain thousands of genes, determining traits expressed in the offspring.

Explanation:

Chromosomes are the structures found in the nucleus of a cell. They are made from DNA, containing hereditary information in the form of genes that control how an organism will look and behave.  - this is true. Prior to cell division, DNA molecules are organized into large structures called chromosomes. Specific regions of a DNA molecule are called genes. These dictate specific proteins which control our traits.

Genes contain thousands of chromosomes that carry specific information about building proteins for a particular trait.  - this is false - genes are segments of DNA that control specific traits by dictating the structure and functions of proteins. Chromosomes contain thousands of genes

Chromosomes are small sections of DNA that contain specific information about a trait to build proteins that people inherit. The thousands of different chromosomes passed from the parents allow for humans to look uniquely different. - this is false - chromosomes are large structures, genes are the relatively small sections of DNA. Humans have 23 pairs of chromosomes, not thousands.

Chromosomes come in homologous pairs (one from each parent) that each contain thousands of genes, determining traits expressed in the offspring.  - this is true. In diploid organisms, like humans, have two copies of each chromosome. These chromosomes contain slightly different versions of genes, which make us unique.

7 0
3 years ago
Look at the three bottles. What evidence is there that a chemical reaction took place?
gregori [183]

Answer:

color changed.

and the temperature changed.

Explanation:

8 0
2 years ago
How would the increase of deforestation affect the amount of carbon in the atmosphere?
Flura [38]
First deforestation takes away trees which help absorb the carbon in the air and second if you burn the trees you release the carbon in the trees
6 0
3 years ago
What are the pros and cons of CRISPR-cas9
professor190 [17]

Answer:

It has incomparable advantages over other gene editing tools.

Explanation:

For example, the CRISPR-Cas9 system has more target sites than ZFNs and TALENs, and Cas9 has many variants that can be used in a variety of studies. Moreover, the system is extremely easy to use and can be executed in almost any laboratory.

The most important advantages of CRISPR/Cas9 over other genome editing technologies is its simplicity and efficiency. Since it can be applied directly in embryo, CRISPR/Cas9 reduces the time required to modify target genes compared to gene targeting technologies based on the use of embryonic stem (ES) cells.

Disadvantages of CRISPR technology: CRISPR-Cas9 off-target; The effect of off-target can alter the function of a gene and may result in genomic instability, hindering it prospective and application in clinical procedure.

this the best i got, hope it helps :)

7 0
3 years ago
Read 2 more answers
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