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
galben [10]
3 years ago
9

Cells transport molecules into the cell in many different ways. One method is through endocytosis, shown in the model. In endocy

tosis, the cell brings specific molecules it needs, including fluid, into the cell. Why does the structure of the plasma membrane make this type of transport necessary for fluids?

Biology
2 answers:
Karo-lina-s [1.5K]3 years ago
6 0

Answer:

While the heads of the phospholipid structure attract water, the tails are hydrophobic. The model shows how the hydrophilic section folds around the fluid molecules to bring them into the cell so they don’t need to pass through the hydrophobic tails.

Fudgin [204]3 years ago
4 0

Answer:

This is because fluids have a polar nature, so they couldn´t cross the lipidic bilayer that constitutes the plasma membrane

Explanation:

Plasma membranes are contituted by lipid bilayers. These kind of compounds are hidrophobic (they reject water) and don´t permit the freely passage of hidriphilic molecules that can disolve in water, constituing fluids. Because of that cells developed transport mechanism like endocytosis.

You might be interested in
Brian indicates that the mutation is in a gene found in the mitochondrial DNA. What does Brian mean by that and why did he signi
vovangra [49]

Answer:

Change occur in the genetic makeup.

Explanation:

Brian means that the change occur in the genetic makeup of the mitochondrial DNA that change the structure as well as the function ability of mitochondria which is responsible for the generation of energy for the cell. The mitochondrial DNA are passed from mother to offspring through the egg cell. He signify mitochondrial DNA because the change occur only in the mitochondrial DNA not in the whole organism's DNA.

6 0
3 years ago
Ribonucleotide reductase controls the synthesis of deoxyribonucleotides and the balance of nucleotides in the cell. The R1 subun
aliya0001 [1]

Answer:

ATP and dATP

Explanation:

In the R1 subunit of ribonucleotide reductase, molecules that binds the site regulating overall ribonucleotide reductase activity  include both ATP and dATP. In addition, binding of ATP can activate ribonucleotide reductase and the binding of dATP deactivates ribonucleotide reductase.

3 0
3 years ago
An open-minded scientist does all of the following except
avanturin [10]
Im not for sure but i think its D if that helps any
7 0
3 years ago
Read 2 more answers
There are ___________ pair of true ribs.
Bad White [126]

Answer:

7

Explanation:

There are 12 total pairs of ribs. 1-7 are attached directly to the sternum by costal cartilages, making them true pairs. 8-10 are fake pairs, which means they're attached indirectly to the sternum. And 11 and 12 and free floating ribs, meaning they aren't attached.

5 0
3 years ago
Read 2 more answers
Systolic blood pressure:_____________ a) is the higher number of a blood pressure reading. b) is the lower number of a blood pre
Alik [6]

Answer:

is the higher number of a blood pressure reading.

Explanation: systolic blood pressure is the higher number of a blood pressure reading and its measure in millimeter of mercury.

Systolic pressure is the amount of pressure in the arteries when contraction takes place in heart. Diastolic pressure is the pressure the heart when it relaxes. It is the lower number of blood pressure reading

When the systolic pressure is >120mm Hg and diastolic is less than 80mm Hg it is normal

120-129mm Hg and diastolic less than 80mm Hg it high and such person needs a regular medical check up

But when systolic 129-139 mmHg

and diastolic is 90mm Hg or above it means the individual is having hypertension stage 1

Above 140mm Hg is hypertension stage 2 and it is the most severe stage. It means the person is hypertensive and medical attention needs to be seek for necessary treatment as this could lead to death of such individual if not well managed.

6 0
3 years ago
Other questions:
  • List of 20 living things
    8·1 answer
  • What do all cells have in common?
    15·2 answers
  • The American Heart Association recommends eating at least _______ ounces of oily fish per week to help reduce your risk of heart
    11·2 answers
  • Define genus and species. how are they related to the binomial nomenclature of an organism?
    10·1 answer
  • Can someone please help me answer this question? Thank you
    9·2 answers
  • Facts and figures are examples fo variable true or false
    11·1 answer
  • PLEASE HELP, BIOLOGY!!!! (10 Points!)
    11·2 answers
  • Please hurry I need this fast
    13·1 answer
  • Which option percent of valid hypothesis in the correct form?
    14·1 answer
  • The mutation results in the organism having more offspring.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!