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
serg [7]
3 years ago
10

Which of the following best describes a nucleotide? A. a nitrogen base and a five-carbon sugar only B. a five-carbon sugar, a ph

osphate group, and a purine C. a pyrimidine, an purine, and a six carbon sugar D. a nitrogen base and a phosphate group only E. a nitrogen base, a phosphate group, and a five-carbon sugar
Biology
1 answer:
S_A_V [24]3 years ago
7 0
The correct answer is E. A nucleotide is the building block of DNA and RNA. Each nucleotide consists of a nitrogen base that can be an adenine, thymine, guanine, cytosine (or a uracil instead of a thymine if we are talking about RNA). It also has a deoxyribose, which is a five-carbon sugar and a phosphate group.
You might be interested in
Phytoplankton are __<br><br> A) scavengers<br> B) producers<br> C) consumers<br> D) decomposers
julia-pushkina [17]
B......................
3 0
3 years ago
The ara operon is controlled by a regulator protein that exerts ________.
goblinko [34]

AraC protein certain to the ara operator works as a repressor that avoid transcription of the same ara operon and the araC gene AraC protein is an activator in the presence of arabinose and repressor in the absence of arabinose -With arabinose absent, the AraC protein stays as
a homodimer. One AraC protein put together to the ara initiator and the other protein now binds to a different regulatory site in DNA called the ara operator.

7 0
3 years ago
List two types of gene mutations.
garri49 [273]

Answer:

corona

AND TEENAGE MUTANT NINGA TURTLES

Explanation:

8 0
2 years ago
How can invasive species alter an ecosystems food web?
Harlamova29_29 [7]

Invasive species can either replace an organism from the ecosystem food web or replace it.  

Explanation:

  • Invasive species are non-native species which can be animals, plants, micro-organisms, fish, etc. they are very much threatening to the native species and ecosystem food web.
  • Invasive species are spread by humans mostly, it happens unintentionally when people travel and all. Even climate change could be a reason for its spread.
  • So, it becomes threatening to native species because when you introduce it into a new ecosystem, it does not have a predator or control. It grows aggressively and takes over the resources for the native species.
4 0
3 years ago
Farmers are excited to learn that scientists have discovered that if the Proton Pyrophosphatase pump is in an area where the con
zhuklara [117]

Answer:

scientist can use this information to grow crops with larger fruits and vegetables.

Explanation:

i had this question on USA test prep and i guessed because i couldn't figure it out and when i guessed i got it right because i chose B or what ever the answer choice is for the correct answer.

7 0
2 years ago
Read 2 more answers
Other questions:
  • Enzymes work to speed up chemical reactions in the body. What do enzymes actually do to speed up reactions? Are the reactants an
    11·1 answer
  • The main immediate source of atp (lasting about 10 seconds) as muscle contractions begin comes from
    13·1 answer
  • What process is similar in both fermentation and cellular respiration?
    6·2 answers
  • Proteins that change shape on binding to another molecule are called ____.
    14·1 answer
  • Why do you think there are<br>usually more organisms at the<br>bottom of a food chain?​
    7·1 answer
  • What is a cell that is the source of other cells
    12·2 answers
  • Describe the difference in the thickness of the endometrium that you should observe when looking at histological samples of the
    8·1 answer
  • 9. How is an organism made?
    10·2 answers
  • A tick feeding on a human is an example of
    15·1 answer
  • Write an argument for or against the following statement. The energy humans use in cars originally came from the Sun.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!