NASA hopes to send the first astronauts to Mars by sometime in the 2030s. If life is found on Mars, what can we say likely will be true of that life form based on what we have learned of life on Earth?
A. That any life on Mars must be photosynthetic.
B. That any life found on Mars will likely be in a dormant state due to the cold temperatures there.
C. That any life found on Mars will be radically different than anything found on earth.
D. That life on Mars will be cellular in nature, composed of one or more cells, like all life on Earth.
Answer: D. That life on Mars will be cellular in nature, composed of one or more cells, like all life on Earth.
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Encapsulated yeast is identified in the cerebrospinal fluid (CSF) of a patient with AIDS. The most likely stain or reagent used to identify this organism is:
a. potassium hydroxide (KOH). b. calcofluor white. c. lactophenol cotton blue. d. India ink.
All EXCEPT which of the following events shuffles
existing alleles into different combinations in sexually reproducing organisms? a. changes in chromosome number b. mutation c. independent assortment of chromosomes d. crossing over e. fertilization
Maternal effect genes form ____ gradients in the developing egg
a. maternal Hox protein b. segment c. polarity gene d. morphogen e. maternal growth factor
Species of dinoflagellates are responsible for much of the phosphorescence seen in ocean waters at night.
Answer the following statement true (T) or false (F)