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
Delvig [45]
3 years ago
9

Which molecules are not able to permeate the cell membrane

Biology
1 answer:
max2010maxim [7]3 years ago
6 0

Answer:

Small uncharged polar molecules, such as H2O, also can diffuse through membranes, but larger uncharged polar molecules, such as glucose, cannot. Charged molecules, such as ions, are unable to diffuse through a phospholipid bilayer regardless of size; even H+ ions cannot cross a lipid bilayer by free diffusion.

Explanation:

You might be interested in
How many nucleotides <br> are in the gene acc tta ggc cct tca
noname [10]
15

Each one of those letters represents a nucleotide. So to find out how many nucleotides are in the gene, just count them

However, keep in mind that this only represents 1/2 strands that make up DNA. If you are supposed to include the other strand, simply double 15, and there would be 30 nucleotides total. However, only 1 strand is actually required in order for protein synthesis to work, so I think it's just 15.
5 0
4 years ago
Angiotensin II is a potent ____________ that helps regulate blood pressure. Angiotensinogen, is an inactive hormone synthesized
Hatshy [7]

Answer:

Angiotensin II is a potein VASOCONSTRICTOR that helps regulate blood pressure. Angiotensinogen, is an inactive hormone synthesized and released continuously from the LIVER. Its activation, which occurs within the BLOOD, is initiated by the enzyme renin. Renin is released from the juxtaglomerular apparatus of the KIDNEYS in response to either (1) LOW blood pressure (as detected by decreased stretch of BARORECEPTORS within granular cells, or by decreased NaCl detected by CHEMORECEPTORS within macula densa cells); or (2) stimulation by the SYMPATHETIC  division. The sequential action of renin and angiotensin converting enzyme (ACE) causes the formation of angiotensin II (the active form of the hormone).

Explanation:

Angiotensin is a peptide hormones that regulate blood pressure by causing increase in blood pressure through vasoconstriction. It is a part of the renin- angiotensin system that regulate the internal pressure of the blood. It is stimulated when the level of blood pressure reduces or there is an decrease in the sodium chloride in the blood. It effects is to vasoconstrict the blood vessels thereby increasing the blood pressure in the vessels. Angiotensinogen is the inactive hormone synthesized by the liver and upon activation through baroreceptors or chemoreceptors, the liver releases angiotensinogen into the blood stream to be ctivated by the enzyme secreted from the kidney's juxtaglumerular apparatusand then activated to teh angiotensinogen I, angiotensinoI is then activated into angiotensin II by the angiotensin II by the angiotensin converting enzyme. Angiotensin also causes the increase in the aldosterone secretion from the adrenal cortex to promote the retention of sodium by the kidneys, this also helps to increaee the blood pressure. Various receptors helps in signalling the body to a reduced blood pressure level. This includes the baroreceptors which are pressure receptors and detect changes in pressure of the blood; chemorecptors which are chemical receptors that detect the change in the concentration of sodium and chloride ion in the blood. All this function together with the sympathetic division of the CNS to help the body regulates its change in blood pressure in a given time.

3 0
3 years ago
What is something an organism needs to live? the letters are srureeoc​
Tomtit [17]

Answer:

food, water, and breathing space

Explanation:

4 0
4 years ago
Which of the following sets of materials is required by both eukaryotes and prokaryotes for replication? Group of answer choices
erastova [34]

Answer:

Double-stranded DNA.

Explanation:

Replication may be defined as the process of formation of the daughter DNA from the parent DNA with the help of enzymes and proteins. The three main process of replication are inititation , elongation and termination.

The double stranded DNA molecule undergoes the process of replication. Four different dNTPs - adenine, guanine, thymine and cytosine are required for the process of replication.  Primers are required for initiation of the process of replication and ori region is the inititaion point of replication.

Thus, the correct answer is option (a).

6 0
3 years ago
Where is the continental rise? at the base continental ______.
Zinaida [17]

Answer:

The continental rise is an underwater feature found between the continental slope and the abyssal plain. This feature can be found all around the world, and it represents the final stage in the boundary between continents and the deepest part of the ocean.hope this helps :)

4 0
3 years ago
Other questions:
  • PLEASE ANSWER QUICKLY
    11·1 answer
  • Where are most modern divergent plate boundaries found? where are most modern divergent plate boundaries found? within continent
    11·1 answer
  • Number 14 please I'm not sure if it is right
    10·1 answer
  • What is the study of how living things interact with each other and their environment?
    10·1 answer
  • A flap of tissue that closes over the larynx during swallowing to prevent material from entering the lungs is called:
    10·1 answer
  • What advantage is the layer of spongy bone found on the inside of a long bone?
    15·1 answer
  • The period of development is the time from conception to birth. (Watch your spelling!)
    14·2 answers
  • PLSSS HELP ME PLSSS I WILL MARK U!!!!<br> Direction: Watch the video and answer the questions below
    14·1 answer
  • Which one of the following does NOT describe a use of a scientific model?
    15·1 answer
  • Which statement describes functions of anti bodies
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!