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Hunter-Best [27]
2 years ago
12

When an antigen is bound to a class i mhc molecule?

Biology
1 answer:
Ivenika [448]2 years ago
6 0
When that situation happens then it can stimulate a cytotoxic T cell. This types of cells are the ones directly responsible for cellular immunity. Cytotoxic T cells can attack target cells by secreting a cytokine that triggers apoptosis which is <span>the death of cells which occurs as a normal and controlled part of an organism's growth or development.</span>
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How do the simplest bacteria relate to the most complex animal?
SVEN [57.7K]

Answer:

Explanation:

As you probably already know, all of the cells in your body started from a single cell. That single cell then divided many, many times to turn into the 50 trillion or so cells that make up you. Almost all of the cells in your body share the same DNA as was found in that first cell

The components that make up the genetic code are common to all organisms! Same NUCLEOTIDES, same BACKBONE same BASE-PAIRS, same HYDROGEN BONDS! The instructions for making proteins (and traits) are in the sequence of nucleotides! These are the GENES that hold our similarities or differences

3 0
1 year ago
To cause cancer, tumor suppressor genes require __________ allele(s) to be mutated and therefore are considered ________________
Dafna11 [192]

Answer:

Two

Recessive

Loss

Explanation:

To cause cancer, tumor suppressor genes require two alleles to be mutated and therefore are considered recessive. The mutation results in a loss of function.

7 0
2 years ago
Which of the following describe a stem cell? Select three options.
telo118 [61]
Where is the options ???!!!
4 0
1 year ago
Marcie enjoyed a late night out, eating and drinking, with friends. When she got home and took her shoes off; she noticed her an
kolbaska11 [484]
The best answer would be B.

high sodium foods definitely cause edema. But alcohol also has a relationship with edema. Still best answer is b.
3 0
1 year ago
Read 2 more answers
Organisms convert chemical energy into other types of energy in order to perform certain functions. Match each function to the t
Rama09 [41]

<u>Answer</u>: Thermal energy---->  a polar bear breaks down stored fat to increase its temperature.

Mechanical energy-------> bat emits and receives sounds to locate prey.

Electrical energy------>eel releases a current to defend itself.

Radiant energy -------->  a firefly produces a green glow from its abdomen to attract mates.

<u>Explanation</u>:

  • <em>Thermal energy</em> is the energy created in the movement of particles that leads to the production of heat and thus, the temperature increases. Since the polar bears break down fat to increase temperature, the energy generated is thermal energy.  
  • The<em> mechanical energy</em> is defined as the sum of energy of motion and   the position of an object  . Thus the energy produced by the bat to locate its prey is mechanical energy.
  • The energy associated with the production of electromagnetic radiation is<em> radiant energy,</em> thus the glow produced by fireflies is a form of radiant energy.
  • The energy produced due to the movement of electrons is electrical energy. Thus, the energy produced by an eel in the form of electric current is <em>electrical energy.</em>

7 0
1 year ago
Read 2 more answers
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