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
lora16 [44]
3 years ago
7

This thin layer surrounds all cells and controls what materials can enter or exit.

Chemistry
2 answers:
scoundrel [369]3 years ago
7 0

Answer:

Explanation:

D) Cell memberane

MatroZZZ [7]3 years ago
3 0
I think it’s D) cell membrane
Hope this helps
Have a good day
You might be interested in
What is the definition of transverse
zavuch27 [327]
<span>situated or extending across something.</span>
5 0
3 years ago
The first liquid that comes out of a woman's breast after delivery is called?<br>​
Kay [80]
The answer is: Colostrum
5 0
3 years ago
Read 2 more answers
Select all statements that correctly describe hemoglobin and myoglobin structure. a. Molecular oxygen binds irreversibly to the
DIA [1.3K]

Answer:

c. By itself, heme is not a good oxygen carrier. It must be part of a larger protein to prevent oxidation of the iron.

e. Both hemoglobin and myoglobin contain a prosthetic group called heme, which contains a central iron ( Fe ) (Fe) atom.

f. Hemoglobin is a heterotetramer, whereas myoglobin is a monomer. The heme prosthetic group is entirely buried within myoglobin.

Explanation:

The differences between hemoglobin and myoglobin are most important at the level of quaternary structure. Hemoglobin is a tetramer composed of two each of two types of closely related subunits, alpha and beta. Myoglobin is a monomer (so it doesn't have a quaternary structure at all). Myoglobin binds oxygen more tightly than does hemoglobin. This difference in binding energy reflects the movement of oxygen from the bloodstream to the cells, from hemoglobin to myoglobin.

Myoglobin binds oxygen

The binding of O 2 to myoglobin is a simple equilibrium reaction:

7 0
3 years ago
What is the mass spectrom​
NARA [144]

Answer:

Here's your Answer

Explanation:

the mass spectrum is the graphical representation of the ion abundance versus the mass to charge of the ions separated in mass spectrometer

7 0
3 years ago
Write uses of Co-60 .​
ivolga24 [154]

Answer:

Cobalt Sources

Cobalt-60 is used as a radiation source in many common industrial applications, such as in leveling devices and thickness gauges. It is also used for radiation therapy in hospitals. Accidental exposures may occur as the result of loss or improper disposal of medical and industrial radiation sources.

Explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • If two balls have the same volume, but ball A has twice as much mass as ball B, which one will have the greater
    7·2 answers
  • If a new halogen were discovered with the name sapline and the symbol Sa, how would the following acids of sapline be named?
    14·1 answer
  • List the steps needed to convert the number of atoms to the mass of an element. (Hint: there are 2).
    5·1 answer
  • Which compounds are most likely to have ionic bonds?
    13·2 answers
  • let 4 moles of methanol (liquid) combust in 3 moles of gaseous oxygen to form gaseous carbon dioxide and water vapor. Suppose th
    12·1 answer
  • The pressure of sulfur dioxide in a container is 159 kpa. what is this pressure in atmospheres?
    9·1 answer
  • Define an "ionic bond" using the words "give" or "take"
    15·1 answer
  • 4. Nitinol alloy is a valuable industrial material mainly because of its (check
    8·2 answers
  • How many Cl- bond with one Na+ ion?
    10·1 answer
  • Which group of measurements is the most precise? (Each group of measurements is for a different object.)
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!