Answer:
Which of the following mechanisms is used by gram-negative bacteria to cross the blood-brain barrier? D) Inducing TNF
Explanation:
The blood brain barrier is a barrier formed by brain microvascular endothelial cells, astrocytes and pericytes. Pathogens can cross this barrier by using different mechanisms. The Tumor Necrosis Factor (TNF) is the way gram-negative bacteria cross this mentioned blood-brain barrier.
Answer:
Sperm is the male reproductive cell, or gamete, in anisogamous forms of sexual reproduction. : )
It isn’t sea anemone nor the beetle because they belong to the Animalia Kingdom so the answer would be AMOEBA and SEAWEED
During DNA replication, the hydrogen bonds must be broken between the complementary nitrogenous bases in the DNA double helix
