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
Nastasia [14]
4 years ago
12

serves as a selective barrier for the cell, meaning that it allows some things to pass into or out of the cell but not others.

Biology
1 answer:
Aleks04 [339]4 years ago
5 0
Cell Membrane is a selective barrier.
You might be interested in
Which macromolecules are polymers made of nucleotides? carboxylic acids fatty acids nucleic acids amino acids
Julli [10]

Answer:

nucleic acids

Explanation:

Nucleic acids are the polymers of nucleotides. There are two types of nucleic acid: DNA and RNA. DNA is a polymer of deoxyribonucleotide while RNA is a polymer of ribonucleotides. The nucleotides are added together with the help of phosphodiester bonds.

Each nucleotide has a nitrogenous base, a pentose sugar and a phosphate molecule.

7 0
3 years ago
The expressed (coding) regions of eukaryotic genes are called ________.the expressed (coding) regions of eukaryotic genes are ca
Levart [38]
The expressed (coding) regions of eukaryotic genes are called EXONS. 

4 0
4 years ago
How is nitrogen from the atmosphere, the abiotic part of the ecosystem, converted in to the biotic part of the ecosystem of the
algol [13]
Nitrogen takes steps through the Nitrogen Cycle, taking an active role in the lives of organisms and changing forms to meet their needs. In fact, nitrogen is a critical part of the development of plants, many farmers even add nitrogen to plants to make the grow bigger and more fruitful. Even the human body needs nitrogen to, which is good because most of the air we breath is nitrogen. 
5 0
3 years ago
A client whose parkinson's disease is being treated with tolcapone should concurrently take what drug?
steposvetlana [31]

Answer:

The correct answer would be levodopa/carbidopa.

Tolcapone is a drug used as an adjunct to levodopa/carbidopa combination medication.

These drugs are used to treat the symptoms of Parkinson's disease.

Tolcapone is used to inhibit enzyme COMT (catechol-O-methyl transferase).

In the brain, levodopa is converted into dopamine which helps in controlling the movement.

Carbidopa helps in preventing the breakdown of levodopa in the blood which allows more levodopa to enter the brain. In addition, it helps in reducing the side-effects associated with levodopa such as vomiting, nausea et cetera.

6 0
3 years ago
Please help me!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
nika2105 [10]

Answer:

The text is hecka small sorry i cant help

Explanation:

5 0
2 years ago
Read 2 more answers
Other questions:
  • Which phrase best describes the benthic zone of a lake?
    14·1 answer
  • What type of facial hair is permitted to be worn by male cadets?
    6·1 answer
  • Computer science which enables the identity of a human being by their traits or characteristics such as fingerprints is called _
    5·2 answers
  • FAST PLEASE HELP ME
    13·2 answers
  • 6. Now consider a homozygous red eyed, curly winged fly with a pink eyed, heterozygous straight winged fly. Predict the offsprin
    14·1 answer
  • What 2 types of macromolecules have a primary purpose to store energy
    14·1 answer
  • There are two types of cells. PROKARYOTIC= ______________________
    7·2 answers
  • Can someone please help ASAP!!
    14·1 answer
  • Students are testing the james river for dissolved-oxygen levels. They test in the blue ridge mountains,at the rivers source,and
    10·2 answers
  • Trees that grow in a forest tend to grow very tall, with few branches. The same species of tree grown in an open area tends to g
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!