Which of the following is an example of a tissue?

a. mammal
b. hamstring
c. liver
d. xylem


Answer: d. xylem

Biology & Microbiology

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When cells of a facultative anaerobe such as Paracoccus denitrificans are growing under anaerobic conditions and using nitrate as the terminal electron acceptor, ________ nitrate reduction is occurring.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

Which of the following statements is NOT true of the blastopore?

A. It is the opening from the blastocoel to the outside. B. It is the opening from the archenteron to the outside. C. It can develop into the mouth of the adult in some animals. D. It can develop into the anus of the adult in some animals. E. It occurs in both protostomes and deuterostomes.

Biology & Microbiology

_______________ is the most common cause of pneumonia in the world.

A) Chlamydophila pneumoniae B) Legionella pneumophila C) Mycoplasma pneumoniae D) Streptococcus pneumoniae

Biology & Microbiology

In pulmonary emphysema, alveoli lose their elasticity. Indicate whether the statement is true or false

Biology & Microbiology