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Which of the following is true of crossing over during cell division?

You took a sample of water from a stream that you crossed while hiking in the Allegheny Mountains.  Analysis of the organisms living in the water include an organism that is a heterotrophic decomposer with cell walls made of cellulose and flagella with hair-like structures.  This organism is most likely a ___________________.

True or False?  All organisms considered protists are eukaryotes.

Which of the following statements about the phospholipids of a cell membrane is/are accurate?  Select all that apply.

In a cell with 16 chromosomes, you will find _____ sister chromatids after the S-phase of mitosis?

Which of the following are characteristics of ALL chordates?  Select all that apply.

An individual presenting with a mysterious disease affecting his connective tissues is found to have numerous defects in multiple regulatory proteins. If these proteins are characterized by highly abnormal patterns of glycosylation, to what cell structure might the patient’s disease most likely be attributed?

Of the following organisms, which are adapted to anaerobic conditions and contain modified mitochondria that lack DNA?  Select all that apply.

Racoon dogs are sexually reproducing mammals with 54 chromosomes in their somatic cells (2n= 54). Which of the following is true of racoon dogs?

You have isolated an organism from a soil sample and are working to classify it. Which of these characteristics would be consistent with classification as a member of the Kingdom Fungi? (Choose all that apply)