All categories

3 years ago

Which describes an extreme environment where Archaebacteria might live?

2 answers:

7 0

In hot thermal trenches of deep sea, Archaebacteria can be found, where no other organisms could survive such high temperatures.

True [87]3 years ago

3 0

The Archaebacteria are the most primitive bacteria that defines the limits of life.

Members of this archaea include the bacteria that can survive in the temperature range of 113 °C and found living in hydrothermal vent.

Example: Pyrolobus fumarii

Some of the Archaebacteria were found in the most acidic conditions (soil) that were known to grown at the pH of 0 and were known as methanogens.

These bacteria were capable of producing methane gas in hot spring and marshes, et cetera.

You might be interested in

Place the steps of the respiration process in the correct order.

noname [10]

During respiration, 3) Air enters the nostrils. 1) Air passes from the trachea to the bronchi. 4) Air diffuses from the alveoli to the blood cells. 2) Oxygen enters the blood cells. 5) Blood transports oxygen to other cells.

<h3>What is respiration?</h3>

During respiration process occurs gas interchange between the body and the environment.

There are two types of respiration,

1) External respiration involves two different stages, inspiration - inhalation- and expiration -exhalation-.

• During inspiration, the diaphragm and intercostal muscles contractions enhance the size of the thoracic box and reduce internal pressure. As a result, air flows in and fills the lungs.

• During expiration, the diaphragm relaxes, and the volume of the thoracic box diminishes, increasing the internal pressure and making the lungs contract, which results in air expulsion.

2) Internal respiration, during which blood and cells interchange oxygen and carbon dioxide.

Steps:

1) External respiration - Inhalation

Air passes from the environment to the lungs through the nose or mouth.

Oxygenated air moves

• From the nose or mouth to the pharynx.

• From the pharynx to the larynx.

• From the larynx to the trachea.

• From the trachea to the bronchia.

• From bronchia to bronchiole.

• Finally, from the bronchiole to alveoli.

Gas interchange with blood occurs in alveoli.

2) Internal respiration - Systemic circulation

The oxygenated blood moves from the lungs to the heart and the rest of the body.

Gases interchange occurs during this step. Cells take oxygen and release carbon dioxide.

Deoxygenated blood moves from tissues to the heart and from the heart to the lungs, releasing carbon dioxide there.

3) External respiration - Exhalation

Carbon dioxide is released by expiration.

Correct order of steps

3) Air enters the nostrils.

1) Air passes from the trachea to the bronchi.

4) Air diffuses from the alveoli to the blood cells.

2) Oxygen enters the blood cells.

5) Blood transports oxygen to other cells.

You can learn more about the respiration at

brainly.com/question/10862677

brainly.com/question/4190530

#SPJ1

Complete question

Place the steps of the respiration process in the correct order.

1) Air passes from the trachea to the bronchi.

2)Oxygen enters the blood cells.

3)Air enters the nostrils.

4)Air diffuses from the alveoli to the blood cells.

5)Blood transports oxygen to other cells.

7 0

1 year ago

Use the following study to answer the following question: A researcher applies varying amounts of fertilizer (0, 2, 4, 8, 10 uni

Rufina [12.5K]

The weigh of each tomato is the dependent variable

4 0

3 years ago

According to the theory of isotasy which statement must be true

Rus_ich [418]

The asthenosphere is denser than the lithosphere.

3 0

3 years ago

Which statement is characteristic of streams and rivers

Drupady [299]

Streams or rivers form when water that does not find an underground aquifer, drains off the land by either seeping through the soil or spilling over the surface into the river or stream bed.

5 0

2 years ago

Read 2 more answers

A plasmid contains the gene for tetracycline resistance and a lacz gene that has a restriction site in it. Foreign dna has the s

tester [92]

Answer:

The colonies are carrying the resistance genes from plasmids

Explanation:

Bacteria can acquire beneficial characteristics that they didn’t have. One way for these is through plasmids, which ones are little fragments of DNA that usually contains resistance genes (for antibiotics, disinfectants, heavy metals, etc.) or other capacities, like the ability to use some substances (for example sugars).

In this specific situation, we already know that the plasmid carrying genes for tetracycline resistance and the lacZ gene.

A little explanation:

Tetracycline is an antibiotic that inhibits bacterial growth and kills the bacteria. The bacteria can “fight” to this antibiotic if it has a resistant gene, the result is that the antibiotic can’t affect the bacteria and survive. An analogy is like a Police Officer (bacteria) that have a bulletproof vest (tetracycline-resistant gene) so the bullets (tetracycline) didn’t affect the police.

In the case of X-gal, is a compound consisting primarily in one sugar called galactose. Not all bacteria can eat galactose, they need an enzyme called β- galactosidase (comes from lacZ gene) that helps the bacteria “eat” the sugar (cuts the sugar in little pieces so the bacteria can eat).

Then, as the bacterial colonies can grow in the medium with tetracycline and X-gal, we know that those bacteria are carrying the resistance genes for tetracycline (does not affect the bacteria) and the lacZ gene (bacteria produce β- galactosidase that cuts galactose). These genes are coming from the plasmids because we already know that the plasmid carries these genes and not from the exogenous DNA.

7 0

3 years ago