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
Mars2501 [29]
3 years ago
6

Single strands of nucleic acids are directional, meaning that there are two different ends. What functional groups define the tw

o different ends of a strand?
Biology
1 answer:
worty [1.4K]3 years ago
7 0

Answer:

The 5' end has free phosphate group while the 3' end has free OH group.

Explanation:

Each DNA strand has two ends that differ from each other with respect to the functional group. The nucleotide present at the 5' end of a DNA strand has a free phosphate group. This phosphate group of other nucleotides of the DNA strand is bonded in phosphodiester bonds. Likewise, the 3' end of a DNA has a free OH group. This makes the two ends of a DNA strand quite different from each other. A DNA new nucleotide can be added to the 3' end due to the presence of a free OH group.

You might be interested in
Which of the following statements about osmosis is correct?
Pavlova-9 [17]

Answer:

D. The presence of aquaporins (proteins that form water channels in the membrane) should speed up the process of osmosis.

Explanation:

Water moves in the cells through osmosis which means water moves from its higher concentration to lower concentration. In many animals and plants, water channels are also present which is called aquaporins which allow the water to move through it in and out of cell more quickly.

The rate of diffusion by channel proteins is higher than simple diffusion therefore the aquaporins speed up the process of osmosis. No ATP is required to transport the water through aquaporin channel proteins.

5 0
3 years ago
Observations, evidence and data that people gather and test support and evaluate scientific explanations is called _____ *
uranmaximum [27]

Answer:

the answer is theory

Explanation:

hope you have what you are looking for! Thx!

7 0
3 years ago
why would having both polar and nonpolar properties in a protective boundary be advantageous for the cell?
Reika [66]

Explanation:

The polar nature of the membrane’s surface can attract polar molecules, where they can later be transported through various mechanisms. Also, the non-polar  region of the membrane allows for the movement of small non-polar molecules across the membrane’s interior, while preventing the movement of polar molecules, thus maintaining the cell’s composition of solutes and other substances by limiting their movement.

Further explanation:

Lipids are composed of fatty acids which form the hydrophobic tail and glycerol which forms the hydrophilic head; glycerol is a 3-Carbon alcohol which is water soluble, while the fatty acid tail is a long chain hydrocarbon (hydrogens attached to a carbon backbone) with up to 36 carbons. Their polarity or arrangement can give these non-polar macromolecules hydrophilic and hydrophobic properties i.e. they are amphiphilic. Via diffusion, small water molecules can move across the phospholipid bilayer acts as a semi-permeable membrane into the extracellular fluid or the cytoplasm which are both hydrophilic and contain large concentrations of polar water molecules or other water-soluble compounds.

Similarly via osmosis, the water passes through the membrane due to the difference in osmotic pressure on either side of the phospholipid bilayer, this means that the water moves from regions of high osmotic pressure/concentration to regions of low pressure/ concentration to a steady state.

Transmembrane proteins are embedded within the membrane from the extracellular fluid to the cytoplasm, and are sometimes attached to glycoproteins (proteins attached to carbohydrates) which function as cell surface markers. Carrier proteins and channel proteins are the two major classes of membrane transport proteins; these allow large molecules called solutes (including essential biomolecules) to cross the membrane.

Learn more about membrane components at brainly.com/question/1971706

Learn more about plasma membrane transport at brainly.com/question/11410881

#LearnWithBrainly

5 0
3 years ago
What are some ways to NOT pollute the air?
Sav [38]
1. reduce the number of trips you take in your car
2.reduce or eliminate fireplace and stove use
3.avoid burning trash, leaves, and other materials
4.avoid using gas-peered lawn and garden equipment
5 0
2 years ago
HEEEELP PLZ who invented the Binomial nomenclature
kvv77 [185]

Answer:

Carl Linnaeus invented the binomial nomenclature

5 0
3 years ago
Read 2 more answers
Other questions:
  • Explain the difference between "genotype" and "phenotype". If an organism has a "phenotype" of curly hair.....could their offspr
    5·1 answer
  • The idea that life is actually widespread throughout the universe is known as
    10·1 answer
  • The maxilla also frequently sustains fractures from blunt trauma to the face. which structures support and house the upper teeth
    6·1 answer
  • HELP PLEASE 15 points
    15·1 answer
  • How do planst respire? <br><br>this is due rllyyy soon please help me!
    8·1 answer
  • Which of the following variations would you expect to see in land vertebrates?
    7·1 answer
  • Albumin is a protein found in egg whites.
    10·1 answer
  • Define cell and atom​
    15·2 answers
  • Some species of hares are brown most of the year, but change color to white in the winter. This allows them to blend in
    14·1 answer
  • In terms of energy, what is the difference between glucose and ATP? 
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!