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
hoa [83]
3 years ago
8

Mr. Palazzo, a fisherman in his late 60s comes to your clinic complaining of small ulcers on his forearms, face and ears. He has

had them for year, but no other problems. What is his most likely diagnosis, and what was the most likely cause?
Biology
1 answer:
azamat3 years ago
6 0

Answer:

Most likely diagnosis is Basal Cell Carcinoma (BCC), most likely caused by years of prolonged exposure to sunlight over time.

Explanation:

Basal Cell Carcinoma (BCC) is a common type of skin cancer that develops when the basal cells that is responsible for producing new skin cells when they die, become mutated and causes the basal cell to abnormally multiply rapidly and continues to grow. The accumulation of these abnormal cells is what results  in cancerous tumors that appears like ulcers on the skin. Prolong and intense exposure to the ultraviolet (UV) radiation from sunlight has been linked to the most likely cause for the mutation of the DNA in the basal cells which leads the abnormal cell growth and multiplication. People who expose themselves to the radiation of the sun for longer periods, over time, are at high risk of developing this cancer.

You might be interested in
The process of canning vegetables involves high heat and, sometimes, low ph to kill contaminating microorganisms. How do you thi
netineya [11]

The answer is

B. Denaturing proteins

C. Altering quaternary structures

D. Destroying cell membranes

Protein have a complex structure from primary to quaternary structure. Change in pH or temperature will cause denaturation of protein which make it unfolded and change the secondary, tertiary, or quaternary structure and cause the enzyme of bacteria become useless. It could also damage the protein in membrane and destroy them, causing lysis. It should not affect the sugar though

3 0
3 years ago
The drawing below illustrates a small portion of the molecules that make up a cell membrane. What is the primary function of the
Ket [755]

Answer:

The correct option is b

Explanation:

Phospholipids are lipids that contains a phosphate group, which forms the "head" of the molecule and is hydrophilic (water loving). The "tail" of phospholipids is made of two fatty acids which are hydrophobic (water fearing). The phospholipid in the cell membrane acts as a selectively permeable barrier that regulates what goes in and out of the cell <u>thereby protecting the cell from some external molecules and ions</u>.

7 0
3 years ago
Name two primary decomposers and describe their function in the recycling of life materials 125 words.
Sloan [31]

Bacteria and Fungi  are the two primary decomposers

Explanation:

<u>Bacteria: </u>Bacteria are known as microscopic single celled organism. Their existence is between inside as well as outside the organism. The use of bacteria is in medical and industrial processes. They are first organisms in earth. Bacteria can survive in worst condition. There are huge number of bacteria. So, it is classified according to their structure and shape.

The life cycle of bacteria can be divided into log phase, lag phase, the stationary phase and Death phase. In lag phase bacteria don’t grow they produce amino acid and protein and make copies of DNA. They make themselves ready for division. In log phase bacteria rapidly multiply itself through binary fusion. In the stationary phase the growth of bacteria is dwindles because of lack of space and accumulating waste. The last phase is death phase where bacteria loss its ability of reproduction.

<u>Fungi:</u> Fungi is same like bacteria play vital role in ecosystem. They are also decomposer. The first way of fungi life cycle is based on spore phase. They begin with haploid. They have one copy of all their genetic material. The second stage is mycelium stage where fungi reproduce asexually.  

7 0
3 years ago
Select the correct answer.
jenyasd209 [6]
Your correct answer is D
4 0
2 years ago
What happens to a stimulus after the body receives it?
deff fn [24]

When a stimulus is produced it signifies the production of sensation in the sensory organs. This sensation through the sensory organs (eyes, ears, nose, skin and tongue) is sent to the sensory nerve connected to these sense organs. These sensory nerves send nerve impulses through the nerve fiber to the spinal cord. From the spinal cord the nerve impulse is transferred to motor nerves.

The motor nerve then sends response to the stimulus though the same path to the region from which stimulus was received and thus the body responds through muscular activity. Such as removal of heat from the heated object if heated sensations were received.


3 0
3 years ago
Other questions:
  • How many know satellites does mars have?<br><br> One<br><br> Two<br><br> None<br><br> Five
    12·2 answers
  • Why rhizoids not called roots?
    11·1 answer
  • This supercontinent formed at the end of the ____________________ Era.
    14·1 answer
  • Which of the following best explains the flow of energy in this food web? Mushrooms → Snake → Squirrel → Plants Grasshoppers → S
    14·2 answers
  • You notice a species of bird in which females prefer long ornamented feathers on the crest of males. You demonstrate this throug
    11·1 answer
  • Please answer all. Worth 50 points. Will mark you Brainliest if you answer all (as well as you can), for an extra 25 points!
    9·1 answer
  • What substance translates the genetic code? A. allele B. DNA C. RNA D. protein
    5·2 answers
  • Explain why are the constrllations of the zodiac seen in both boston and brazil?
    11·1 answer
  • Submit your project researching some environmental problems caused by the agriculture and natural resource industry. Be sure you
    13·1 answer
  • Close examination of a healthy organ reveals a lining of several layers of cells. The layers do not contain any blood vessels an
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!