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
stira [4]
3 years ago
14

What is #25??? Can someone plzzz help me???

Biology
1 answer:
Marta_Voda [28]3 years ago
5 0
The answer is B) 9 neutrons
You might be interested in
• A scientific name, ___________________ ____________________, is made up of two parts, the ___________ and the ______________.
frozen [14]

Answer:1..Binomial System

2..genus and species

Explanation:

6 0
3 years ago
Need help plzssssssssssssssssss
Anton [14]

Answer:

Offspring

Explanation:

You pass down traits to your offspring. Your offspring inherit from you.

4 0
3 years ago
Arrange these elements of the intrinsic conduction system in the order that a depolarizing impulse travels during a normal heart
zlopas [31]

Answer:

SA Node

Inter-nodal Pathways

AV Node

AV Bundle

Bundle Branches

Purkinje Fibers

The SA nodes functions first for setting pace for the heart, then the inter-nodal pathway make link b/w SA and AV node. AV node is site of delay when contraction of atria occurs. AV bundle is the mean of electrical link b/w atria and ventricle. The conveying of impulse to the inter-ventricular septum occurs through bundle branches, while conveying of impulse throughout and along the walls of ventricle occurs through Purkinje fibers.

7 0
3 years ago
Starting with a protein that has been inserted into the Endoplasmic reticulum (ER) membrane with the Amino (N) terminal in the E
Vika [28.1K]

Answer and Explanation:

Ribosomes are the primary structure for protein synthesis. They can be found in the rough endoplasmic reticulum or floating in the cytosol.  

Free ribosomes are not attached to any cytoplasmic structure or organelle. They synthesize proteins only for internal cell use. Other ribosomes are attached to the membrane of the endoplasmic reticulum and they are in charge of synthesizing membrane proteins or exportation proteins. Free and attached ribosomes are identical and they can alternate their location. This means that although free ribosomes are floating in the cytosol, eventually, they can get attached to the endoplasmic reticulum membrane.  

Synthesis of proteins that are destined to membrane or exportation starts in the cytoplasm with the production of a molecule portion known as a <u>signal aminoacidic sequence</u>. This signal sequence varies between 13 and 36 amino acids, is located in the <u>amino extreme</u> of the synthesizing protein, and when it reaches a certain length, it meets the <u>signal recognizing particle</u>. This particle joins the signal sequence of the protein and leads the synthesizing protein and associated ribosome to a specific region in the Rough endoplasmic reticulum where it continues the protein building. When they reach the membrane of the endoplasmic reticulum, the signal recognizing particle links to a receptor associated with a pore. Meanwhile, the ribosome keeps synthesizing the protein, and the enlarged polypeptidic chain goes forward the reticulum lumen through the pore. While this is happening, another enzyme cuts the signal sequence, an action that requires energy from the ATP hydrolysis. When the new protein synthesis is complete, the polypeptide is released into the reticulum lumen. Here it also happens the protein folding (which is possible by the formation of disulfide bridges of proteins are formed) and the initial stages of glycosylation (the oligosaccharide addition).  

Once membrane proteins are folded in the interior of the endoplasmic reticulum, they are packaged into vesicles and sent to the Golgi complex, where it occurs the final association of carbohydrates with proteins. The Golgi complex sends proteins to their different destinies. Proteins destined to a certain place are packaged all together in the same vesicle and sent to the target organelle. In the case of membrane proteins, they are packaged in vesicles and sent to the cell membrane where they get incrusted.  

There are certain signal sequences in the <u>carboxy-terminal extreme</u> of the protein that plays an important role during the transport of membrane proteins. A signal as simple as one amino acid in the c-terminal extreme is responsible for the correct transport of the molecule through the whole traject until it reaches the membrane.  

4 0
3 years ago
Unlike life at the top of a body of water, life at the bottom of the body of water A. must rely on other means than photosynthes
devlian [24]
I think the answer to you r question is C. bc with no sunlight at the bottom the temp is affected. Also I looked up photosynthesis and it  said that scientist have found this at the bottom of the ocean so it in fact does perform more photosynthesis
What do you think?
7 0
4 years ago
Read 2 more answers
Other questions:
  • If granite were subjected to intense heat and pressure it would most likely change to
    10·1 answer
  • A recessive gene located on the X chromosome is the cause of hemophilia in affected individuals. Males are more likely to have h
    15·1 answer
  • Molecule 1 has the nitrogenous base sequence TCAAGT. Which set of bases in Molecule 2 can bond to that sequence in a complementa
    7·2 answers
  • Thick- skinned rhinoceroses and elephants were once classified together as pachyderms (meaning "thick skin"). They actually desc
    12·1 answer
  • PLEASE HEP ME FAST!
    7·1 answer
  • Adolescents tend to use the _____ in the temporal lobe of the brain for emotional reactions.a.amygdalab.thalamusc.hippocampusd.p
    7·1 answer
  • 3 problems that occur when coal is used
    5·1 answer
  • Most enzymes
    8·1 answer
  • All body cells contain identical DNA.- true or false
    14·2 answers
  • igneous rock determined 25 million year old plate movement transported 100,000 meters. How fast is plate moving?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!