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
yulyashka [42]
3 years ago
8

Which best describes the Big Bang Theory? A. Matter was compressed into a single point and then exploded outward to form the uni

verse. B. A black hole exploded, creating stars. C. Stars burn off their fuel, expand, and shed their shells.
Biology
2 answers:
Helga [31]3 years ago
7 0
B.
I hope I helped out!
OLEGan [10]3 years ago
5 0
A)before the bigbang.there was alot of nothing packed into nothing.matter and time.sapce and stars did not exist till then scientisys havent foind a way yet to know wjat was tjere before the big bang.so we cannot sah stars exploded or a black hole died.but whay we can say is thatba very dense pinprick.very very very very very dense pinprick of nothing ness expanded.and created matter as it heated up
You might be interested in
When marine animals die their shells decay into limestone when the limestone is exposed is released this process is known as
Inessa05 [86]

Answer:

fossilization

Explanation:

4 0
3 years ago
imagine a cell-surface receptor protein is being newly synthesized. How can it get into the membrane that it will ultimately be
motikmotik

Answer:

the steps for a new receptor synthesis:

Explanation:

Do not forget the steps vary from an eukarityc cell to prokarityc one.  

IN AN EUKARYOTIC CELL:

1- Transcription: in the nucleus, mRNA is synthesized from the DNA sequence that codifies the protein. Exons are spliced if needed by spliceosomes.  

2- From nucleus into cytoplasm: mRNA goes through nuclear membrane into the cytoplasm were ribosomes, substrates for protein synthesis and other organelles are.

3- Ribosomes recognize a signal in mRNA and start reading the genetic code, three consecutive nucleotides at a time and adjust the correspondent tRNAs (tRNAs carry the aminoacids)  

4- Peptide bonds are formed between consecutives aminoacids, and a polypeptide is build up according to the mRNA sequence.

5- (The mRNA has a signal that is recognized by the rough endoplasmic reticulum) The peptide goes into this reticulum (RER) and then into Golgi apparatus. (more chemical modifications are made if needed). By this moment the protein has an inserted portion in a lipid membrane.

6- The protein is transported in a vessel that finally fusions with cytoplasmic membrane and the receptor is in destiny. Hydrophobic aminoacid sequences are inserted in membrane.

IN A PROKARYTIC CELL:

1- Transcription (no splicing is needed, there are not exons)

2- There are not nucleus and cytoplasm divided (no transport)

3- Ribosomes recognize a signal in mRNA and start reading the genetic code, three consecutive nucleotides at a time and adjust the correspondent tRNAs (tRNAs carry the aminoacids)

4- Peptide bonds are formed between consecutives aminoacids, and a polypeptide is build up according to the mRNA sequence.

5- The mRNA has a signal that is guides the growing protein to cellular membrane. Hydrophobic aminoacid sequences are inserted in membrane.

8 0
3 years ago
Why are amino acids important?
serious [3.7K]
Protein plays a crucial role in almost all biological processes and amino acids are the building blocks of it. A large proportion of our cells, muscles and tissue is made up of amino acids, meaning they carry out many important bodily functions, such as giving cells their structure
7 0
3 years ago
Solve the following algebra<br>3(4+3)-6​
Alenkasestr [34]
3(4+3)-6
3*7-6
21-6=15
3 0
3 years ago
Answer asap asap!<br><br><br> bio
astra-53 [7]
Either B and D I believe I may be wrong..
8 0
2 years ago
Other questions:
  • Where is crust neither formed or destroyed
    9·1 answer
  • A patient repeats, "i feel hot. hot, cot, rot, tot, got. i'm a spot." the nurse documents this as an illustration of:
    5·1 answer
  • Compare the excretory system and urinary system
    9·2 answers
  • Plz help me answer this question!
    7·2 answers
  • Part 1: Make a graph of each set of data. For the first set, plot the start location data on the x-axis and the box's average sl
    5·1 answer
  • Polypeptides produce?​
    8·1 answer
  • Which organism is NOT made up of 1or more eukaryotic cells?
    15·1 answer
  • What are the 3 nitrogen bases on the mRNA coding for the amino acid methionine?
    9·2 answers
  • Helpppp pweeeeseee, i'll give brainliest
    8·1 answer
  • 6. Blood type is determined by three alleles, A, B, and O. Use the
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!