Which of the following describes the function of the madreporite in echinoderms?
a. regulating water flow in the water vascular system
b. allowing for slow but powerful movement
c. digesting and circulating key nutrients
d. facilitating the regeneration of body parts
a. regulating water flow in the water vascular system
You might also like to view...
Organisms that grow well at 0°C and have optimum growth temperatures of 15°C or lower are called
A. frigiphiles. B. mesophiles. C. psychrotrophs. D. psychrophiles.
X-ray diffraction images produced by ____ were used by Watson and Crick to infer the structure of DNA
a. Wilkins b. Griffith c. Franklin d. Hershey e. Watson and Wilkins
Why are estuaries and coral reefs more productive than deeper regions of the ocean?
A. They have more access to light and nutrients. B. They have more access to light and lower salt concentrations in the water. C. They have more access to light D. They have more access to nutrients and lower salt concentrations in the water. E. They have lower salt concentrations in the water.
________ is/are able to degrade infecting bacteriophage DNA, thus protecting the host cell.
A. Restriction endonucleases B. Protection exonucleases C. Modification methylases D. Lysozyme