1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
yarga [219]
3 years ago
10

Which of the following is the best example of an open system?

Biology
2 answers:
poizon [28]3 years ago
8 0
The best example, from the choices given here, of an open system is a car engine. All of the other examples are of closed systems. The correct answer is B. 
Aneli [31]3 years ago
3 0

Answer: a car engine

Explanation: An open system is one in which both mass and energy can be exchanged with the surroundings.

A closed system is one in which only energy can be exchanged with the surroundings.

An isolated system is one in which neither mass nor energy can be exchanged with the surroundings.

A) an insulated gas cylinder is an example of isolated system.

C) Our universe is an example of closed system.

D) A greenhouse is an example of closed system.

You might be interested in
Phosphorescence is a phenomenon associated with which algal division?
Viefleur [7K]
The correct answer is (b.) euglenophytes. Phosphorescence is a phenomenon associated with an algal division called euglenophytes. Euglenoids are one of the most known flagellates which are excavated eukaryotes of the phylum euglenophyte. Euglenophytes are single-celled plant-like protists that have no cell wall.
3 0
3 years ago
Read 2 more answers
What level of protein structure is created during protein syntheisis?
Zolol [24]

Answer:

The correct answer will be - Primary structure

Explanation:

Proteins are one of the biomolecules formed by the process of translation.

Depending on the function they attain many structures like primary, secondary, tertiary and Quaternary structure.

The primary structure is the simplest structure formed by binding the amino acids via peptide bonds in linear order. This simplest structure is formed by the process of translation in which tRNA brings specific amino acids to the nascent peptide.

Thus, Primary structure is the correct answer.

5 0
3 years ago
Name and describe each star phase.
Inessa [10]
(A nebula)
is a cloud of gas (hydrogen) and dust in space. Nebulae are the birthplace biths. There are different types of nebula. An Emission Nebubla such as Orion nebula, glows brightly because the gas in it is energised by the stars that have already formed within it. 

(A star)
is a luminous globe of gas producing its own heat and light by nuclear reactions (nuclear fusion). They are born from nebulae and consist mostly of hydrogen and helium gas. 

(red giant)
This is a large bright star with a cool surface. It is formed during the later stages of the evolution of a star like the Sun, as it runs
out of hydrogen fuel at its centre.

(red dwarf)
These are very cool, faint and small stars, approximately one tenth the mass and diameter of the Sun. They burn very slowly and have estimated lifetimes of 100 billion years. 

(white dwarf)
This is very small, hot star, the last stage in the life cycle of a star like the Sun. White dwarfs have a mass similar to that of the Sun, but only 1% of the Sun's diameter; approximately the diameter of the Earth. 

(Black holes)
are believed to form from massive stars at the end of their life times. The gravitational pull in a black hole is so great that nothing can escape from it, not even light. The density of matter in a black hole cannot be measured.
8 0
3 years ago
Which sex chromosome is more dominant ( X or Y ) ?<br><br>​
Tcecarenko [31]

Answer:

x

Explanation:

The X chromosome is significantly longer than the Y chromosome and contains hundreds more genes. Because the additional genes in the X chromosome have no counterpart in the Y chromosome, the X genes are dominant.

hope it helps , pls mark me as brainliest

6 0
3 years ago
Read 2 more answers
The rate at which alcohol is eliminated from the body may be increased by?
Nikolay [14]
As a rule of thumb, a person will eliminate one average drink or . 5 oz (15 ml) of alcohol per hour. Several factors influence this rate. The rate of elimination tends to be higher when the blood alcohol concentration in the body is very high.
3 0
3 years ago
Other questions:
  • Shortly after quitting, a smoker will a.) develop shortness of breath b.) regain there senses of smell and taste c.) lose circul
    14·1 answer
  • Which celestial body would have the strongest gravitational pull on a satellite orbiting 100 km above its surface? Explain your
    10·2 answers
  • Osmoregulators have _____ internal solute concentrations compared to their external environment.
    13·2 answers
  • What isthe differnce between cohesion and adhesion?
    8·1 answer
  • Under harsh conditions, mycobacterium tuberculosis form what?
    6·1 answer
  • How does a hypothesis help scientist undertsand the natural world?
    8·1 answer
  • Qual é o ciclo de vida das moscas ? Relate todas as fases , desde o ovo até a morte
    6·1 answer
  • When the temperature of the air increases, the speed of the molecules that make up air decreases. true or false?
    5·2 answers
  • How is oceanography a multi-science field?
    15·1 answer
  • Which statement is NOT true of mitosis?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!