This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: What is meant by the idea life on Earth had an interstellar origin? What will be an ideal ... (Read 102 times)

tichca

  • Hero Member
  • *****
  • Posts: 554
on: Jul 27, 2018
What is meant by the idea life on Earth had an interstellar origin?
 
  What will be an ideal response?

Question 2

What do we mean by life as we know it?
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

kusterl

  • Sr. Member
  • ****
  • Posts: 315
Reply #1 on: Jul 27, 2018
Answer to Question 1

Organic molecules have been found in comets and some meteorites. The large amount of water on Earth implies it was impacted by many comets in the past. Thus, organic molecules would have been introduced onto the Earth. Also, interstellar molecular clouds contain many complex molecules, which may have rained down on Earth during its formation.

Answer to Question 2

Our life is based on chains of carbon atoms with DNA, RNA, and proteins formed out of amino acids and nucleotides. Life as we know it depends on liquid water as its medium. It's possible other atoms may also be suitable for life to be based on, which would be radically different from ours.


tichca

  • Member
  • Posts: 554
Reply 2 on: Jul 27, 2018
YES! Correct, THANKS for helping me on my review

bblaney

  • Member
  • Posts: 323
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

Did you know?

Hypertension is a silent killer because it is deadly and has no significant early symptoms. The danger from hypertension is the extra load on the heart, which can lead to hypertensive heart disease and kidney damage. This occurs without any major symptoms until the high blood pressure becomes extreme. Regular blood pressure checks are an important method of catching hypertension before it can kill you.

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

Did you know?

In 2010, opiate painkllers, such as morphine, OxyContin®, and Vicodin®, were tied to almost 60% of drug overdose deaths.

Did you know?

The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.

Life-history cube, a classification of fish, mammals, and altricial birds based on three dimensionle Life-history cube, a classification of fish, mammals, and altricial birds based on three dimensionle
Nursing Student life Nursing Student life
Ocean cover most of Earth’s surface Ocean cover most of Earth’s surface
Life cycle of a typical flowering plant. Life cycle of a typical flowering plant.
Time Line for Life’s Origin and Evolution Time Line for Life’s Origin and Evolution
Video: Arthroscopy

For a complete list of videos, visit our video library