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

Author Question: How many different nucleotide bases are used in nucleic acids in life on Earth (consider both DNA ... (Read 178 times)

saliriagwu

  • Hero Member
  • *****
  • Posts: 537
on: Jul 27, 2018
How many different nucleotide bases are used in nucleic acids in life on Earth (consider both DNA and RNA)?
 
  A) 25
  B) 4
  C) 20
  D) 5

Question 2

When an atom absorbs a photon containing energy, any of the following can happen except which?
 
  A) The atom becomes excited.
  B) The atom is ionized.
  C) An electron moves from an upper energy level to a lower one.
  D) An electron moves from a lower energy level to an upper one.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

eliasc0401

  • Sr. Member
  • ****
  • Posts: 338
Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

C


saliriagwu

  • Hero Member
  • *****
  • Posts: 537
Reply #2 on: Jul 27, 2018
Both answers were spot on, thank you once again


eliasc0401

  • Sr. Member
  • ****
  • Posts: 338
Reply #3 on: Jul 27, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.

Did you know?

Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.

Did you know?

Recent studies have shown that the number of medication errors increases in relation to the number of orders that are verified per pharmacist, per work shift.

Did you know?

Famous people who died from poisoning or drug overdose include, Adolf Hitler, Socrates, Juan Ponce de Leon, Marilyn Monroe, Judy Garland, and John Belushi.

Did you know?

The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.

Review of nucleotide biochemistry Review of nucleotide biochemistry
Speed of Earth Speed of Earth
Earth’s Spheres Earth’s Spheres
The Life Cycle of a Midlatitude Cyclone: Cyclogenesis The Life Cycle of a Midlatitude Cyclone: Cyclogenesis
Proteins Are Made of Amino Acids Proteins Are Made of Amino Acids
Life Table for an Annual Plant Cohort Life Table for an Annual Plant Cohort
Video: How Hemoglobin Picks Up and Delivers Oxygen

For a complete list of videos, visit our video library