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
Tasya [4]
2 years ago
9

Nitrous oxide (N20) is a gas sometimes used in dental offices. Which of these is the correct

Biology
1 answer:
-Dominant- [34]2 years ago
6 0

Answer:

N20 is an element because it is on the periodic table and doesn't have anything else attached to it. NO would be a compound because it has oxygen attached to it.

You might be interested in
In single celled organisms, materials are stored primarly in
Alex_Xolod [135]

Answer:

A unicellular organism is formed by a single cell. ... The circulation in unicellular organisms is carried out by the movement of the cytoplasm of the cell called cyclosis.

7 0
3 years ago
Describe the key features of the Watson-Crick model for DNA structure.
vagabundo [1.1K]

Answer:

Watson and Crick proposed the double helical model of DNA.

Explanation:

- This model says that DNA exist as double helix. It has two polynucelotide strands running in opposite direction i.e the strands are anti-parallel.

- Each polynucleotide strand is made up of several nucleotide liknked together by phophodiester bonds.

- The two strands are not coiled upon each other but the double strand is coiled upon itself around a common axis like the spiral stair case. Here base pairs forms the stairs and backbone of two strands form railing. Back bone contains sugar and phosphate.

- The base pairing is specific, adenine always pairs with thymine and guanine always pairs with cytosine. Thus if we see any base pair, it consists of one purine and one pyrimidine.

- The two strands of DNA thus show complementary base pairing.

- The strands are held together because of hydrogen bonding between the bases in opposite strand.

- One full helical turn involves ten base pairs and the base pairs are stacked  3.4 A apart.

- This form is called as B-form of DNA.

5 0
3 years ago
Which level on the energy pyramid has the third most energy?
Elenna [48]
The correct answer is D,
dose this help?
8 0
3 years ago
Which legs for a frog are used for jumping?
mario62 [17]
The hind legs, I believe. That's why they are longer and stronger.
7 0
2 years ago
Which characteristic of a protein may change during a DNA mutation?
patriot [66]

Answer:

Sequence of amino acids by the ribosome are the characteristic of a protein may change during a DNA mutation. Explanation: Point mutations can cause significant changes to an organism if they alter the way a protein functions. A mutation in DNA changes the mRNA, which in turn will change the amino acid chain.......

Explanation:

3 0
2 years ago
Read 2 more answers
Other questions:
  • When would be a good time in San Francisco to collect seashells? Explain your answer.
    6·2 answers
  • When attempting to lower a person's body temperature in response to hyperthermia?
    9·1 answer
  • The air component in soil provides plants with the _ needed for photosynthesis
    5·1 answer
  • I need 10 facts about vacuole
    7·1 answer
  • Study figure 28-1. Which of the letters represent an interneuron?
    10·1 answer
  • To what kingdom do coccidia belong?
    12·1 answer
  • 4. Compare a male to a female frog. How can you tell the difference?​
    15·2 answers
  • When a person’s body becomes infected by a virus, white blood cells in the blood produce specialized immune cells that help figh
    6·1 answer
  • Which statement best summarizes the relationship between time and distance in echolocation and sonar?
    5·1 answer
  • How long you survive with no food and only water? ​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!