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
NeTakaya
3 years ago
8

How are melanophores an adaptation for sharks?

Biology
1 answer:
Oksi-84 [34.3K]3 years ago
8 0
Melanophores are small pigments that are present in the dermis layer of the skin of a shark. They impart a gray color to the dorsal and lateral surface area of the shark. They help in background adaptation and countershading of the body, which makes a shark difficult to be seen. 
You might be interested in
An athlete might believe that there is a benefit to blood doping with red blood cells because it
julia-pushkina [17]

1) could improve the delivery of oxygen to the muscles

Because such blood cells carry oxygen from the lungs to the muscles, a higher concentration in the blood can improve an athlete’s aerobic capacity and endurance.

8 0
3 years ago
1 2 3 4 5 6 7 8 9 10
FromTheMoon [43]

Answer:

49 sec

because you have never seemed yet 59 hour instead 12 hour.

but 24 hour also.

3 0
3 years ago
D.H., a 54-year-old resort owner, has had multiple chronic medical problems, including type 2 diabetes mellitus (DM) for 25 year
Paha777 [63]

Answer:

Chances are, you haven't infected the bacteria in a hospital setting or surgery, as you could have contacted them anywhere.

What happened with said patient was the face of the immunosuppressive treatment, the defense of the patient was decreased and it generated a worse picture with a bacterium that would not act in such a pathogenic way in another person who does not receive corticosteroid treatment.

This deduction could be made since prior to pneumonia and meningitis there were other infections that occurred in the patient indicating immunosuppression or lowered immunity, which were alerts for professionals.

Explanation:

The immunosuppression generated by corticosteroids is an adverse effect of said drug, thus causing bacteria or other pathogenic microorganisms to more easily generate lethal diseases that occur, similar to the human immuno-insufficiency syndrome.

These pneumonias and meningitis are very common in children but not in adults, which means that the defense of acquired immunity throughout life would not be serious.

In patients like these where corticosteroids suppress the path of humoral defense factors, thus inhibiting the presence of COX and thromboxane A2 in the immune lineage, that is why the immunological tests are weakened and the bacteria have more spread or harmful effects such as this patient.

The bacterium does not indicate that it is intra-surgical or hospital-based because of the severity of the disease it triggered, but because the patient is immunosuppressed.

4 0
2 years ago
The endoplasmic reticulum (ER) is a single membrane continuous with the nuclear envelope and a series of interconnected sacs thr
Solnce55 [7]

Answer:

The transport of proteins and other bioactive materials from endoplasmic reticulum to the nucleus without the involvement of transport vesicles is the main beneficial for the cell to be continuous with the nuclear envelop.

Explanation:

The rough endoplasmic reticulum or RER that contain ribosomes on its surface is directly continuous with membrane of nucleus.

     This helps nucleus to gain access to the proteins and other materials generated within endoplasmic reticulum.

   If endoplasmic reticulum faces biological problems such as unfolded protein accumulation in the ER is hazardous to the cell.During such circumstances ER send specific signal to the nucleus.

  The nucleus respond to that signal by reducing the rate of protein synthesis,so that the ER would get some extra time to fold the required proteins essential for cellular functioning,

7 0
3 years ago
Jordan is working with a 50% stock concentration of Windex. She decides to add 500 µL of bacteria to a tube containing 1 mL of n
Lady bird [3.3K]

33% is the unknown concentration of the tube.

Explanation:

Concentration of stock of windex = 50%

concentration of bacteria = 500 microliter

nutrient broth = 1000 micro litre +500 microlitre of windex

concentration of bacteria is the volume of bacteria present in nutrient broth culture.

total volume in the tube is 1000

50% is the concentration of tube of bacteria and broth before adding windex.

After adding windex of 50 % concentration and the volume is 500 microliter which is only 250 microliter of windex rest is water.

33% is the concentration of the tube, which means it has 33% of bacteria in 1500 ml of solution.

4 0
3 years ago
Other questions:
  • Eukaryotic DNA occurs within the cells
    6·2 answers
  • Which epidermal layer is structured to resist abrasion, penetration, and water loss?
    5·1 answer
  • Describe the key ways in which the atmosphere affects earth. what is the greenhouse effect, and how does it work
    5·1 answer
  • Which of the following is true about epithelia? Which of the following is true about epithelia? Pseudostratified epithelia are c
    13·1 answer
  • Your dog becomes ill and you rush him to the veterinarian's office. A technician draws blood from your dog's leg for a vet-order
    5·1 answer
  • Why are coastal areas cooler during the day than inland areas?
    9·2 answers
  • How many genes make up the human genome?
    10·1 answer
  • _________________________________ is the process that explains this survival and shows how species can change over time.
    11·1 answer
  • Atelectasis: instructions: definition, clinical manifestations, medication, evaluate the disease power point
    6·1 answer
  • When a chicken with black feathers mates with a chicken with white feathers, their offspring may be a speckled hen. Half of a sp
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!