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 87 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

at

  • Member
  • Posts: 359
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).

Did you know?

Stevens-Johnson syndrome and Toxic Epidermal Necrolysis syndrome are life-threatening reactions that can result in death. Complications include permanent blindness, dry-eye syndrome, lung damage, photophobia, asthma, chronic obstructive pulmonary disease, permanent loss of nail beds, scarring of mucous membranes, arthritis, and chronic fatigue syndrome. Many patients' pores scar shut, causing them to retain heat.

Did you know?

Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.

Did you know?

The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

Did you know?

Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.

Origin of T cells, B cells, RBCs, WBCs, and platelets. Origin of T cells, B cells, RBCs, WBCs, and platelets.
Phylogeny of the three domains of life Phylogeny of the three domains of life
How Orbital Eccentricity Changes the Amount of Solar Radiation Earth Receives How Orbital Eccentricity Changes the Amount of Solar Radiation Earth Receives
Buddhist philosophy allows for the idea of reincarnation, as the self passes from body to body. The ... Buddhist philosophy allows for the idea of reincarnation, as the self passes from body to body. The ...
Earth Atmosphere Earth Atmosphere
Life support system of a developing human Life support system of a developing human
Video: Effect of the environment on coat color in the Himalayan rabbit Animation

For a complete list of videos, visit our video library