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Elza [17]
3 years ago
15

According to the diagram below, which of the following is a derived characteristic of flatworms?

Biology
1 answer:
antiseptic1488 [7]3 years ago
8 0
D flat worms show protosome development :)
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Which of the cell types shown helps determine capillary permeability?
alexira [117]

The correct answer to this is:

“Astrocytes”

Astrocytes also called star cells due to their shape are the most abundant glial cells in the brain. Extensions from these cells encase capillaries and offer extra control over which materials enter or leave the intercellular fluid of the CNS thus acting like a permeability membrane.

6 0
3 years ago
Bio 254 - Pre-Class Assignment 1
Trava [24]

Question 1:

<u>Answer</u>:

The "first line of defence" in innate immunity is "Physical and chemical barriers".

<u>Explanation</u>

"Physical and chemical barriers" is first line of defence includes  that are  ready to defend the living organism's body from infection at any time . These barriers include your skin, cilia, tears, urine flow, mucus, stomach acid, friendly bacteria and white blood cells . Skin acts as a mechanical barrier as it does not allows all the organism to pass through it unless the skin is cut or open. Similarly mouth eyes, and nose are also the ways through with the disease causing organism can enter the body. The micro-organisms that entered through these pathways are trapped either in saliva or mucus and swallowed and later either killed in the stomach or flushed out via the urine. If this first line of defence is broken or damaged, the second line of defence inside our body will be activated.

Question 2:

<u>Answer:</u>

Histamine kinins, and interleukins are examples of inflammatory mediators.

<u>Explanation</u>:

Inflammatory mediators are identified in inflammatory bowel disease IBD.These mediators play an vital role in the clinical and pathologic characteristics of the disorders. Cytokines, that are released by macrophages in due to antigenic stimuli, are binded different receptors and produce endocrine, autocrine and paracrine effects.  Interleukins are a subset of a large group of 'cellular messenger molecules' called cytokines that modulates the cellular behaviour. Interleukins are not stored within cells like cytokines but they are released immediately, in response to a stimulus. Once an interleukin has been secreted, it moves to the target cell and binds to it through a receptor molecule on the surface of the cell . This interaction triggers a sequence of  signals in the target cell that ultimately leads to the alteration in the behaviour of the cell.

5 0
3 years ago
Endocytosis is a type of active transport that moves a substance out of the cell t or f
yaroslaw [1]

Answer:

False

Explanation:

Correct answer would be Exocytosis. Here's how to remember...

EXOcytosis = EXIT

ENDocytosis = ENTER

I hope this helps :)

6 0
3 years ago
The elderly can have impaired immune systems, making them susceptible to infections that can take longer to heal. Which of the f
OLEGan [10]
The answer would be

older peopleshould be vaccinated because elderly individuals are more susceptable to diseases and proper vaccinations can help prevent this matter. some may even think the answer could be antibiotics but antibotics taken repetitively can lose its potency and the body will be immune to its once helpful purpose. hope this helped love
6 0
3 years ago
Read 2 more answers
Modify the existing vector's contents, by erasing the element at index 1 (initially 200), then inserting 100 and 102 in the show
Aleonysh [2.5K]

Answer:

Following are the code to this question:

#include <iostream>//defining header file

#include <vector>//defining header file

using namespace std;

void PrintVectors(vector<int> numsList)//defining a method PrintVectors that accept an array

{

   int j;//defining integer variable

   for (j = 0; j < numsList.size(); ++j)//defining for loop for print array value  

   {

       cout << numsList.at(j) << " ";//print array

   }

   cout << endl;

}

int main()//defining main method  

{

   vector<int> numsList;//defining array numsList

   numsList.push_back(101);//use push_back method to insert value in array

   numsList.push_back(200);//use push_back method to insert value in array

   numsList.push_back(103);//use push_back method to insert value in array

   numsList.erase(numsList.begin()+1);//use erase method to remove value from array

   numsList.insert(numsList.begin(), 100);//use insert method to add value in array

   numsList.insert(numsList.begin()+2, 102);//use insert method to add value in array

   PrintVectors(numsList);//use PrintVectors method print array value

   return 0;

}

Output:

100 101 102 103  

Explanation:

In the above-given code, inside the main method an integer array "numList" is defined, that use insert method to insert value and use the erase method to remove value from the array and at the last "PrintVectors" method is called that accepts a "numList" in its parameter. In the "PrintVectors" method, a for loop is declared, that prints the array values.

7 0
3 years ago
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