"Bacteria" is a noun. Nouns don't have tenses.
The past tense of "cell" is "called." For example, "I called my friend yesterday."
The correct phrasing is "did not manage," as "managed" is the past tense of the verb "to manage."
The correct phrase is "had shown." This is the past perfect tense of the verb "show."
"Shrunk" means to become smaller in size, typically as a result of heat or water. It is the past tense of the verb "shrink."
Bacteria that enter the body can be destroyed by the immune system through mechanisms like white blood cells, antibodies, and inflammation. The immune response works to identify and attack the invading bacteria to prevent infection and illness. Antibiotics can also be used to kill bacteria directly in certain infections.
the past tense of am is was and the past tense of has is had
The past tense of "has" is "had" and the past tense of "have" is "had."
Was and were are both the past tense of be. The present tense is: I am he is you are they are The past tense is: I was he was you were they were
"will be" is the future tense of "be". The past tense of "be" is "was/were".
The past tense is she did.
The word "were" is past tense. It is the past tense of the verb "to be."
The past tense of "will" is "would". The past tense of "to be" is "was" or "were".
HAD is the Past Tense of TO HAVE.
The past tense of "you will not" is "you would not."
The past tense of "am" is "was" and the past perfect tense of "has" is "had."
The past tense is had.
Past tense I had Present tense I have Future Tense I will have