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Aleksandr-060686 [28]
3 years ago
10

Which phrase describes a homogeneous catalyst?

Biology
1 answer:
VMariaS [17]3 years ago
4 0

A  .present in many biological reactions

Explanation:

  • A catalyst is a chemical substance that speeds up the rate of chemical reaction.
  • It does not take part in the chemical reaction but facilitates the reaction.
  • A homogenous catalyst is a catalyst that is present in the same phase as the reactants.
  • The exact opposite is a heterogenous catalyst which is in a different phase from the reactants.
  • Homogenous catalysts are present in many biological reactions.

Learn more:

Catalyst brainly.com/question/8413755

#learnwithBrainly

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it takes light from the sun about three minutes to reach mercury how many hours does it take light from the sun to reach Neptune
Kazeer [188]

The time taken to reach the Neptune planet is 4.2 hours

<h3>What is the time taken?</h3>

We can see that the speed of light has the value of 6.7 * 10^8 miles per hour . We also know that the solar system is composed of the sun and the planets. The distance of the between the sun and mercury is 35,000,000 miles while the distance between the sun and Neptune is  2.8 x 10^9 miles.

This implies that the ratio of the distance from neptune to the sun and that of mercury to the sun is;  2.8 x 10^9 miles/3.5 * 10^7 miles hence Neptune is eight times farther from the sun than mercury.

The time taken for light to reach Neptune from the moon is;

Distance = 2.8 x 10^9 miles

Speed = 6.7 * 10^8

Time = 2.8 x 10^9 miles/6.7 * 10^8

= 4.2 hours

Learn more about speed of light:brainly.com/question/394103

#SPJ1

Missing parts;

Mercury is the closest planet to the Sun, with an average distance of 35,000,000

miles.

It takes light about 3 minutes to travel from the Sun to Mercury.

Neptune is the farthest, with an average distance of 2.8 x 10 to the power of 9 miles from the Sun.

How many times farther from the Sun is Neptune than Mercury?

How long does it take light to reach neptune?

6 0
1 year ago
What is true about epigenetic changes and cell division?
Vladimir79 [104]
The best and most correct answer among the choices provided by the question is the third choice "<span>Epigenetic changes of mother cells are generally maintained in daughter cells; however, they are susceptible to environmental influences." </span>I hope my answer has come to your help. God bless and have a nice day ahead!
7 0
3 years ago
HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!plEaSeASaP
Galina-37 [17]

Answer:

A.? i'm not 100% sure tho

Explanation:

3 0
3 years ago
Siblings Billy and Sue are brother and sister, but g are not genetic copies of each other. For example, Sue inherited their moth
balu736 [363]

Answer:

The options are

A.Independent assortment

B. Mutation

C. Crossing over

D. Non disjunction

The answer is A.Independent assortment

Explanation:

Independent assortment of genes involves the separation of genes during the formation and development of reproductive cells.

A boy has XY chromosome and a lady has XX chromosomes. This explains why Sue inherited the mother's copy of chromosome 13 but their father's copy of chromosome 14 while her brother Billy inherited their father's copy of both chromosomes 13 and 14. He inherited both due to the presence of XY chromosomes.

8 0
3 years ago
What is relationship among the location of volcanues,earthquake epicenter,and mauntain ranges?
Korolek [52]
Volcanoes, earthquakes and mountain ranges are all results of the tectonic movement of the Earth. 
<span>When two plates collide and one does not completely give way and go under the other the crust is pushed up forming mountain ranges. 
</span>An earthquake is the shaking and vibration of the Earth's crust due to movement<span> of the Earth's </span>plates<span> (plate </span>tectonics<span>).
</span>And volcano is created <span>when </span>plates<span> are pushed together or pulled apart.
So, the relationship between volcanoes, earthquakes and mountain ranges is their connection with the tectonic movement of the Earth.</span>
4 0
2 years ago
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