A scientist discovers a new microbial species. It is a single-celled eukaryote without cell walls. In which kingdom will it likely be classified?
A. Plantae
B. Monera
C. Fungi
D. Protista
E. Animalia
Answer: D
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Which of the following does NOT contribute to the rapid movement of gases into and out of the blood within the lungs?
A) thin membrane B) rapid blood flow C) permeability of the membrane D) large surface area E) concentration gradient
What do the large female cones of a pine tree contain?
a. pollen b. antheridia c. microspores d. megasporangia e. microsporangia
Receptor mediated endocytosis:
A. is involved in receptor recycling B. involves cell membrane fusion C. can involve the protein clatherin D. can induce a refractory period for signal transduction E. all of the above
In a reaction that is believed to be similar to pre-biotic chemical reactions, H2S can combine with FeS to form ____
Fill in the blank with the appropriate word.