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kramer
2 years ago
9

Which sequence of events best describes the current theory of the origin of life on Earth?

Biology
1 answer:
murzikaleks [220]2 years ago
6 0

Answer:

The correct answer is - Development of simple bacteria→RNA formation→DNA formation

Explanation:

According to the hypothesis and researchers, it seems to confirm that RNA was the first genetic or hereditary material that was present in the simple form of bacteria developed first.

RNA is the molecule responsible for the origin of life on the earth and evolved all the required processes and methods for carrying and expressing the genetic information of an organism before DNA. DNA is evolved from RNA molecules of simple bacteria.

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How does the available staff influence the selection of either continuous electronic or intermittent auscultation as the fetal-m
kondaur [170]

Answer:

The options

a. There must be a 1:1 nurse-to-patient ratio regardless of the method used.

b. Staffing patterns do not influence fetal monitoring choices.

c. Use of intermittent auscultation requires a lower nurse-to-patient ratio.

d. More nurses are needed when electronic fetal monitoring is used because of increased medical interventions.

The ANSWER is c.

c. Use of intermittent auscultation requires a lower nurse-to-patient ratio.

Explanation:

a. There must be a 1:1 nurse-to-patient ratio regardless of the method used.❌

A one-to-one ratio is important at the second phase of labor or in occurrence of a high-risk condition, irrespective of the monitoring method applied.

b. Staffing patterns do not influence fetal monitoring choices.❌

Staffing patterns do have an influence in conserving safe monitoring routine of the labor patient.

c. Use of intermittent auscultation requires a lower nurse-to-patient ratio.✔

Intermittent auscultation is largely staff-intensive.

d. More nurses are needed when electronic fetal monitoring is used because of increased medical ❌

Reduced nursing time is needed when carrying out electronic monitoring, this will allow the nurse to have increased time for educating, encouraging and supporting the laboring woman.

6 0
2 years ago
What is the relationship between nucleic acids and proteins?
zzz [600]
I think the answer is C
7 0
3 years ago
PLS HELPP MEEEE I WILL GIVVEE BRAINLIEST
Alexandra [31]

hope this helps :):):):):):):):):):)

4 0
3 years ago
Read 2 more answers
The anterior portion of the body of most annelids, such as the earthworm, is adapted for sensing the environment.
Diano4ka-milaya [45]

Answer:

The answer is False. Although sensitive cells are <u>more abundant</u> in the <u>anterior portion</u> of the annelid´s body, in general, they are arranged in all the segments.

Explanation:

Annelids, such as the earthworm, have a variety of sensory cells:    

  • <u>Mechanoreceptors</u>, disposed of in groups in <em><u>each segment</u></em> of their body.  
  • <u>Photoreceptors</u>: Light-sensitive cells. Although they are <em><u>located in the whole </u></em>body, they are <em><u>abundant in anterior and posterior segments</u></em>, concentrated in the intern and dorsal part of the epidermis.
  • <u>Humidity receptors</u> are the most sensitive cells and are <u>located in the first segments</u> of the earthworm body
  • <u>Chemoreceptors</u>: sensorial cells cumulus forming a prominent tubercle with prolongations that extends through the cuticle. These tubercles form three rings <em><u>in each segment</u></em> but are especially <em><u>abundant in the anterior part</u></em> of the body.

The tegument is very rich in free nervous terminations, which functions might be tactile.

6 0
3 years ago
Solid sodium reacts with liquid water to form hydrogen gas according to the equation 2 Na(s) + 2 H₂O(l) → 2 NaOH(aq) + H₂(g) Wha
lana66690 [7]

Answer: 21850.42mmHg or 28.78atm

Explanation: From the equation of the reaction, 2 moles of sodium reacts with 2 moles of water to produce 2 moles of NaoH and 1 mole of hydrogen gas at s.t.p.

molar volume of gas at s.t.p. = 22.4dm^3,

standard temperature = 0°C or 273K,

standard pressure = 760mmHg or 1atm,

molar mass of Na = 23g;

volume of the container= 20L or 20dm^3

From the equation, 2 moles or 46g of Na produces i mole or 22.4 dm^3 of hydrogen.

Therefore, 1kg or 1000g of Na will produce 22.4 * 1000/(46)= 486dm^3 of hydrogen.

To find the pressure of the gas produced, the formula P1V1/T1 = P2V2/T2

P1= 760mmHg, T1= 273K, V1 (initial volume of gas)= 486dm^3, T2=50.0°C or 50+273K= 323K, V2( final volume of gas= volume of vessel)=20dm^3  P2=?

P1= P1V1*T2/(V2T1)= 760mmHg * 323/(273)= 21850.42mmHg or 1atm*21850.42/760= 28.78atm

5 0
3 years ago
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