The correct answer is that "the T cell enters a state of anergy".
The activation of T cells requires two signals: (1) antigen specific signal presented by an antigen presenting cell (either a macrophage or a dendritic cell) that activates t cell receptors and (2) co-stimulatory signals that is not antigen specific but rather found in the plasma membrane of the antigen presenting cell (i.e. CD28). In the absence of a co-stimulatory signal, the t cell will enter a state of anergy or the inability to produce an immune response toward an offending antigen.
A Moon mark as brainliest if correct
Answer:
<em>Carbon </em><em>dioxide</em><em> </em><em>is </em><em>necessary</em><em> </em><em>for </em><em>photosynthesis</em><em> </em><em>because </em><em>plants </em><em>make </em><em>their</em><em> </em><em>food </em><em>only </em><em>in </em><em>the </em><em>presence</em><em> </em><em>of </em><em>carbon </em><em>dioxide</em><em> </em>
I hope this will help you :)
<span>Covered with tough dry scales.
Ectothermic(an animal that's dependent on body heat)
Breathe with lungs throughout there lives
Three-Chambered heart with a ventricle that is partially divided
Produce amniotic eggs covered with a leathery shell, most oviparous, some oviparous.</span>
Answer:
B
Explanation:
Reproduction is when a living thing mates and is capable of making another living thing. That means it's the process of NEW living things, because it's being created. Hope that helps:)
