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
LenKa [72]
4 years ago
13

Based on the big bang theory, approximately how old is the universe? A. 14 billion years old B. 100 million years old C. 6000 ye

ars old D. 4.6 billion years old
Biology
1 answer:
Nikolay [14]4 years ago
3 0
-clears throat and prepares to sing- our whole universe was in a hot dense steep and nearly 14 billion years ago expansion started..........

You might be interested in
What effect does the buoyant force have on a submerged object?
galben [10]
The buoyant force is an upward force on an object submerged in a fluid. It is the resultant of the pressure force on the surface of the object. The buoyant force may be larger than the weight of the object causing it to accelerate upwards.
5 0
3 years ago
1 Both viruses and cells have - A Lysosomes B Mitochondria C Chloroplasts D Proteins​
8090 [49]

Explanation:

I think chloroplasts iam not sure

8 0
3 years ago
Write the complementary sequence for the following DNA sequence, in order from 3' to 5': 5′−CGATATTGAGCTAAGCTT−3′ Use all capita
sveta [45]

Answer:

3'-GCTATAACTCGATTCGAA-5'

Explanation:

The DNA is a macromolecule formed by two strands of polynucleotides forming a double helix.

These chains are composed of monomers called nucleotides, there are 4 different types in DNA, called nitrogenous bases: two purines, guanine (G) and adenine (A) and two pyrimidines, thymine (T) and cytosine (C). They are joined by covalent bonds in each chain.

These bases are complementary: G with C, and A with T between the two strands by hydrogen bonds making the double-stranded DNA molecule.

A sequence 5'-CGAT-3' is equivalent to a sequence written 3'-ATCG-5' , because the 5' and 3' notation defines the direction of reading. If one strand is noted 5' to 3', then the complementary strand will be from 3' to 5' in the same sense.

So, all we need to do is write the complementary bases from the 3' end to 5':

5'-CGATATTGAGCTAAGCTT-3'  

3'-GCTATAACTCGATTCGAA-5'  (answer)

5 0
3 years ago
Facts about cellulose (multiple choice)
bixtya [17]

Answer:

a maybe correct me if im wrong

6 0
3 years ago
Mass transit systems reduce air pollution. <br> a. True<br> b. False
fenix001 [56]
True. This is because it is like carpooling with hundreds of people. Hope this helps!
5 0
4 years ago
Other questions:
  • When a cell undergoes mitosis,what is the result?
    5·2 answers
  • Energy is released fromATP when
    6·1 answer
  • PLEASE HELP ME!!!!!
    15·2 answers
  • Canadian winters can be particularly harsh. Describe two adaptations of stems that help plants survive Canadian winters.
    10·1 answer
  • Which of the following staements are false? A a disturbance in an ecosystem is an even that changes the availabity of resources
    15·1 answer
  • Which two statements describe how a bean plant and a squirrel obtain energy? A. The bean plant gets energy directly from the sun
    12·2 answers
  • NH3 +02-NO + H20 is unbalanced what is the balanced equation
    12·1 answer
  • Sam is heterozygous at the locus for the gene that determines whether you have hitchhikers thumb to bend 90 degrees back. You fi
    9·2 answers
  • Compare and contrast suspension feeding and deposit feeding-
    9·1 answer
  • Decommissioned oil rigs are sometimes converted to artificial reefs in the Gulf of Mexico. What is the likely impact to the ecos
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!