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aliina [53]
2 years ago
8

The single most important feature to consider when purchasing a scuba regulator is: How well it performs in controlled laborator

y testing. A second-stage adjustment knob to ensure ease of breathing. The availability of regular, professional maintenance. Both the first and second answers are correct.
Biology
1 answer:
serg [7]2 years ago
8 0

Answer:

A diving regulator is a pressure regulator that reduces the pressure of gas in the tank and deliver it to the diver so that he/she can breathe easily. It must pass the controlled laboratory testing and must have a second adjustment knob to ensure ease of breathing. Modern regulators are precision made and designed to work under demanding conditions. 1st stage and 2nd stage, diaphragm and piston, exhaust valve and purge button are types of diving regulators.

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Elena-2011 [213]

DNA- Deoxyribonucleic Acid is a molecule composed of two chains or double strands that coil around each other forming a double helix to carry the genetic information for the development of an organism.

<u>Explanation:</u>

  • DNA contains the information that instructs a living organism to develop, grow, survive and reproduce.
  • The information instructed is found inside every cell and is passed down from parents to their children.
  • DNA is made of nucleotide molecules which in turn contains a phosphate group, a sugar group, and a nitrogen base.
  • Deoxyribose in DNA is another form modified from ribose sugar.

6 0
3 years ago
chegg e. coli has to be grown in the presence of to the lac operon. group of answer choices lactose: repress lactose: induce glu
zhuklara [117]
<h3 />

The lac operon of E. coli contains genes involved in lactose metabolism. It's expressed only when lactose is present and glucose is absent.

<h3>How is the lac operon triggered by E. coli?</h3>

The lac operon of E. coli contains genes related to lactose metabolism. Only when lactose and glucose levels are low does it manifest symptoms. Two regulators that control the operon's "on" and "off" states in response to lactose and glucose concentrations are lac repressor and catabolite activator protein (CAP).

<h3>Why does E. coli prefer glucose to lactose?</h3>

Because it promotes quicker development than other sugars and is the first sugar to be consumed in sugar combinations, glucose is frequently the best carbon source for E. coli.

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6 0
1 year ago
Discuss the meaning and importance of selective toxicity as it relates to antimicrobials.
Burka [1]
An antimicrobial<span> is an agent that kills microorganisms or inhibits their growth. </span>Antimicrobial <span>medicines can be grouped according to the microorganisms they act primarily against. For example, antibiotics are used against bacteria and antifungals are used against fungi.
</span>
Selective toxicity<span> refers to the ability of the drug to targets sites that are relative specific to the microorganism responsible for infection. Sometimes these sites are unique to the microorganism or simply more essential to survival of the microorganism than to the host.

Selective theory relates to antimicrobial because the antimicrobial is the drug that kills microorganisms and inhibits there growth,  selective theory is the ability of the drug.
</span>
8 0
3 years ago
What life-threatening infection can result from allowing a urinary tract infection to go untreated in an older adult?
JulsSmile [24]

Hi!

Your answer is C

Which is also known as sepsis


~CoCo

3 0
3 years ago
HELP!!! EVEN MORE POINTS!!!!
irina1246 [14]

Answer:

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Explanation:>>>>>>

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