Identify the species that is NOT classified as a pteridophyte.

A. Marchantia
B. Psilotum
C. Equisetum
D. Hart's tongue


Answer: A

Biology & Microbiology

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Which organelle harvests energy from food molecules to make ATP?

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A medical researcher is trying to develop a diagnostic technique for a disease which is characterized by replication of a particular chromosomal region. What would be the most appropriate technique?  

A.  FISH B.  Gene chip C.  Genome sequencing D.  White blood cell count Clarify Question   · What is the key concept addressed by the question? · What type of thinking is required?   Gather Content · What do you already know about FISH and gene chip diagnostics?   Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer?   Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?  

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In a species of desert lizard, only females are known to exist. When two females court prior to reproduction, it is necessary for one lizard to assume the posture of a male to stimulate the other female to ovulate. This is a case of

A. bisexuality.  B. hermaphroditism. C. angiogenesis. D. parthenogenesis.

Biology & Microbiology

The perforin-granzyme pathway involves

A) the production of fever, which kills the pathogen. B) the production of antibodies toward the invading pathogen. C) the production of special cell-killing proteins that act on infected or abnormal cells. D) presenting the foreign antigen to B cells. E) binding CD95L to infected cells, which eventually leads to cell apoptosis.

Biology & Microbiology