Conjugation in most ciliates involves a series of steps that leads to increased genetic diversity. Which one of the following choices is not one of those steps?
A. Sexual reproduction
B. Meiosis of a haploid nucleus
C. Mitosis of a haploid nucleus
D. Meiosis of a diploid nucleus
E. Mitosis of a diploid nucleus
Answer: B
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A) 32 ATP B) 24 ATP C) 8 ATP D) 36 ATP E) 3 ATP
What material make up a cell membrane?
a. carbohydrates b. cellulose c. phospholipid
You have been assigned to analyze some extraterrestrial material recently collected from Mars. After examining a sample using a microscope, you jump up excitedly and shout to your colleagues that you have confirmed the existence of life on Mars. One of your colleagues takes a look at your sample and remarks that all he sees is a single-celled "blob" with little internal structure. Assuming that life on Mars can be classified into similar domains and kingdoms as Earth, to which domain does your "blob" belong?
A. Protista B. Archaea C. Fungi D. Animalia
An element in the second row of the periodic table that has four valence electrons would most likely _____.
A) form four covalent bonds B) have a full outer shell and be unreactive C) form ionic bonds D) be more electronegative than an element with six valence electrons in the same row of the periodic table