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
gizmo_the_mogwai [7]
2 years ago
11

Which of the following correctly identifies the function of the cell membrane?

Biology
1 answer:
kozerog [31]2 years ago
6 0

Answer:

a controls what enters and leaves the cell

Explanation:

You might be interested in
 What can you do to verify its purity? 
Papessa [141]

Answer:

To verify you have a pure sample use the sterile needle to isolate and grow on a new streak plate to make sure you see only one culture.

Explanation:

6 0
2 years ago
What was known before Franklin and Wilkins conducted their studies of DNA? Check all that apply. DNA is found in the nucleus of
kvasek [131]

Answer:

The correct answer will be-

   1. DNA is found in the nucleus of a cell

    2. Organisms store and transmit genetic information

    3. Cells contain protein molecules.

Explanation:

The study of DNA started much before the discoveries of Rosalind Franklin and Maurice Wilkins.

Nucleus of cell was discovered by Robert Brown in 1831 but the material present inside the nucleus called "nuclein" (DNA) came from the studies of Johann Friedrich Miescher in 1869.

Proteins as a constituent of cell were discovered by the experimental analysis of Gerhardus Johannes Mulder in 1837.

DNA as a genetic material came from the experimental studies of Frederick Griffith in 1928, Oswald Avery, Maclyn McCarty, and Colin MacLeod in 1944, and Hershey and Chase in 1952.

Franklin and Maurice Wilkins are known for their work on the the structure of DNA as they were able to produce high-resolution X-ray photographs of DNA fibres called Photo 51 in 1952 using X-ray diffraction technique. By 1953 Franklin concluded concluded that DNA shows helical structure with phosphates on outer side.

Thus, 1. DNA is found in the nucleus of a cell

         2. Organisms store and transmit genetic information

         3. Cells contain protein molecules.

             are the correct options.

8 0
3 years ago
Read 2 more answers
A) Describe the first interaction that triggers signaling to begin in a target cell.
sergey [27]

Answer:

Ligand-receptor interaction is the first interaction that triggers cell signalling.

Ligands are the hormones, drugs or neurotransmitters that specifically bind with receptors present in cell surface to initiate cell signalling. Ligand binding to the receptor is reversible. Binding of the ligand to the receptor can activate or inactivate receptor. Activation may lead to cell signalling pathways. Inside cells, there are secondary molecules which on activation starts a cascade of reactions. which in-turn regulate the function of the ligand molecule.

At first, the activated receptor relates with G proteins molecules in the cell.

before the ultimate physiological effect of the ligand on the cell's behavior is produced Therefore, the cellular signaling starts as soon as the first messenger (the ligand) binds to its receptor.

hope this helps

6 0
3 years ago
What is the process by which arteries become hard and stiff as a result of too much pressure?.
erastovalidia [21]

Answer: atherosclerosis

Explanation:

8 0
2 years ago
How was the sangha reserve created?
Taya2010 [7]
<span>After seeing what logging had done to other parts of Africa, in 1999 the countries of the Congo Basin decided to find a way to protect the environment and in 2000 put laws into place to make sure that logging and other things didn't have a negative impact of the environment.</span>
4 0
3 years ago
Other questions:
  • Which joint has the greatest range of motion?
    15·1 answer
  • Which of the following methods brings about cell lysis due to cavitation induced by rapid localized pressure changes?
    6·1 answer
  • How does organismal behavior demonstrate an emergent property of an organism's physiology
    5·1 answer
  • A solution with a pH of 11.0 is
    8·1 answer
  • What is the basis of Gram staining results?
    12·1 answer
  • How might scientific knowledge about monoculture farming affect societal decisions? Please be sure to answer in complete sentenc
    8·1 answer
  • Compare and contrast the genetic material between a bacterium and a fungus. ​
    6·2 answers
  • Jill stepped on a tack. Which part of the central nervous system caused her foot to move off the tack quickly in a reflex respon
    5·2 answers
  • Identify the feature not unique to vertebrates.
    5·2 answers
  • HELP ME PLEASEEEEE
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!