Trace fossil because a trace fossil is a fossil of a footprint, trail, burrow, or other trace of an animal rather than of the animal itself.
Active transport is a cellular transport mechanism. It’s the movement of molecules that are assisted by enzymes along the way to a higher concentration.
Explanation:
<em>Plants adapt to environmental stress by altering their metabolism, flowering, growth, and reproduction; and by migrating toward areas with more favorable climatic conditions.</em>
<em>Sorry if wrong ....</em>
immediately before passing into the large intestine, the food mass must pass though the <span>ileocecal valve.
</span>This muscle valve is part of the gastrointestinal system and separates the small intestine and the large intestine. The valve <span>opens when a bolus of food passes from the small intestine into the large intestine (your inner sewer pipe) during peristalsis.</span>
Answer:
Cytotoxic T cells
Explanation:
Perforin is the cytosolic protein and upon degranulation forms pores in the target cell. Perforin protein helps in the transport of water and ions.
Perforin is present in the granules of cytotoxic T cells. These cells have the ability to kill virus infected cells and cancer cells. Cytotoxic T cells bind with the class 1 MHC molecules. These cells are also known as CD8+ T cells.
Thus, the correct answer is option (A).
