The earliest animal fossils
A. are about 2.5 billion years old.
B. are of marine organisms.
C. are of insects.
D. None of the above is correct.
B. are of marine organisms.
You might also like to view...
In electron transport systems, the electron carriers are membrane associated
Indicate whether the statement is true or false.
Answer the following statements true (T) or false (F)
1. A stigma is an organelle that pumps water out of the cell. 2. Sexual spores are also known as conidia. 3. Classification of fungi is based on the type of conidia that they produce. 4. Protozoa that move by means of pseudopodia are in a category known as Sarcodina. 5. Fungi can cause both infectious diseases and microbial intoxications.
The Public Health Security and Bioterrorism Preparedness and Response Act identifies select agents and identifies a Tier 1 subset of particularly hazardous microorganisms.
Answer the following statement true (T) or false (F)
Which of the following statements about hair cells is NOT true?
A. They are found in the mammalian ear. B. They are found in the fish lateral line system. C. They can be repaired if they rupture. D. Bending of the cells triggers ion flow across the cell membrane. E. Their structure includes stereocilia and a kinocilium.