A bilaterally symmetrical, wormlike animal that has a complete digestive tract and a cuticle could be a member of which of the following phyla?

A) Cnidaria
B) Annelida
C) Nematoda
D) Chordata


Answer: C

Biology & Microbiology

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Researchers suggest that despite the trend observed, the depletion of oxygen from the atmosphere due to burning of fossil fuels is currently not a serious environmental concern

because the change in oxygen levels is small compared to the abundance of atmospheric oxygen, which is sufficient for survival of animals and humans. True or false. Severe declines in ocean plants (phytoplankton) due to ocean warming and acidification from dissolved CO2 (forming HCO3 - and CO3 2-) could potentially lead to larger decreases in O2 levels over time, thereby altering this conclusion. What will be an ideal response?

Biology & Microbiology

What would be the result of a mutation in Hsp90?

A. Glucocorticoid receptor could not form a dimer B. The nuclear localization signal would no longer function C. Expression of the regulated genes would become constitutive D. The hormone would not be able to bind to the glucocorticoid receptor

Biology & Microbiology

The coelacanth is found in the class:a

Dipnoi. b. Actinistia. c. Placoderms. d. Cephalochordata. e. Urochordata

Biology & Microbiology

Compare and contrast antitermination and the use of an alternative sigma factor for regulating gene expression in the lytic cascade

What will be an ideal response?

Biology & Microbiology