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
scZoUnD [109]
3 years ago
5

Where does actual oxygen exchange take place in the human respiratory system? A. bronchi B. trachea C. diaphragm D. alveoli

Biology
2 answers:
sweet [91]3 years ago
8 0
Your answer is going to be C I have a 100% in biology
sattari [20]3 years ago
4 0

The Answer is D alveoli

You might be interested in
A patient is receiving gentamicin once daily. A nursing student asks the nurse how the drug can be effective if given only once
Digiron [165]

Answer:

a."Gentamicin has a longer half-life than other aminoglycosides."

Explanation:

Gentamicin is an aminoglycoside that binds to bacterial ribosomal proteins and causes the inhibition of the protein synthesis, killing the bacteria. The killing can continue for long periods after administrating the drug and even once that the concentrations of this one can no longer be detected in the plasma. That is the reason why this drug is given once a day.

5 0
3 years ago
By recycling this compound ensures the continuation of glucose
shusha [124]
Ribulose Biphosphate recycling is important for the continued production of glucose.
8 0
3 years ago
In guinea pigs, dark hair (D) is dominant over light hair (d) and curly hair (C) is dominant over smooth hair (c). Complete a di
Alexxx [7]
P:               DdCc          x           DdCc
g:      DC  Dc  dC  dc           DC  Dc  dC  dc

1.)
 
              DC                       Dc                   dC                     dc

DC       DDCC                   DDCc              DdCC              DdCc
Dc        DDCc                    DDcc              DdCc               Ddcc
dC        DdCC                   DdCc               ddCC              ddCc
dc         DdCc                    Ddcc               ddCc               ddcc 

2.)

G= 1:2:2:1:1:4:2:2:1

3.)

F= 9:3:3:1
7 0
4 years ago
Which of the following would have resulted from the functions of prokaryotes on early earth?
Vitek1552 [10]
Not sure what the following is, but I think it could be less carbon in the soil 

3 0
3 years ago
Read 2 more answers
Different mRNA molecules can have poly-A tails of different lengths. Considering the purpose of adding the poly-A tail (from the
Roman55 [17]

Answer:  Then the longer it is, the more it protects against degradation. Proteins that are needed over a long period of time come from a long tailed mRNA.

Explanation:

Messenger RNA (mRNA) is the ribonucleic acid that transfers the genetic code from the DNA of the cell nucleus to a ribosome in the cytoplasm. It determines the order in which the amino acids in a protein will bind and acts as a template or pattern for the synthesis of that protein.

Messenger RNA is synthesized in the cell nucleus in eukaryotes from the process called DNA transcription. <u> In most cases, once this messenger RNA has been synthesized, it must be matured (RNA maturation)</u>. This involves the removal of intercalary sequences called non-coding introns from the protein to be synthesized. Then, the addition of a structure called CAP to the 5' end, which is a modified guanine nucleotide needed for the normal process of DNA transplantation and maintaining its stability. This is critical for proper recognition and access of the ribosome.  Also, polyadenylation which is the addition of the sequence called Poly-A to the 3' end. The Poly-A sequence is made up of several adenine molecules and is located at about 20-30 bp towards the tail (AAPAA sequence) or polyadenylation signal, which protects the end of the mRNA. The polyadenylation helps to increase the period of the message, so that the transcription lasts longer in the cell and therefore more protein is translated and produced.

This mature messenger RNA is transferred to the cell's cytoplasm, in the case of eukaryotes, through pores in the nuclear membrane.  The messenger RNA in the cytoplasm is coupled to the ribosomes, which are the machinery in charge of protein synthesis.<u>  However, after a certain amount of time the mRNA is degraded</u> into its component nucleotides, usually with the help of ribonucleases. So, an mRNA with a short tail will have a shorter lifespan.

Then, proteins that are needed over a long period of time come from a long tailed mRNA. And proteins that are briefly nedded come from a short tailed mRNA. This is because, as explained, the Poly-A tail serves to protect the mRNA molecule from degradation. So, then the longer it is, the more it protects against degradation.

3 0
3 years ago
Other questions:
  • How does a graph make it easier to analyze data?
    13·2 answers
  • 8) You are studying a group of chameleons that are currently present across many southern hemisphere landmasses. Species 1 is fo
    5·1 answer
  • What is the chemical formula for ethanol?
    9·1 answer
  • What is the main cause of extinction in the last 11,000 yrs?
    15·1 answer
  • During what phase of the cell cycle does the dna become replicated?
    10·1 answer
  • The trophic facilitation phenomenon described by Hacker and colleagues involves direct interactions between two salt marsh plant
    12·2 answers
  • TRUE OR FALSE!!!
    12·1 answer
  • Which part of the photosynthetic cycle produces glucose and ADP?
    8·1 answer
  • convection currents in the (blank) are partially responsible for the movement of tectonic plates. A. stratosphere b. geosphere c
    8·1 answer
  • What’s the answer to this pls
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!