Lab question: You have placed cultures in an anaerobic jar, activated the chemical pack, and sealed the jar. Later, you notice the methylene blue strip is colorless. Why is the methylene blue strip colorless?   

Osmosis includes the diffusion of water across a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration.   

In general, course assignments in BI234 including exams (lecture, lab, final), homework, laboratory activities, periodic journal article readings, and extra credit opportunities, open at _____ and close at _____ on the assigned days, unless otherwise noted. 

Capsules and slime layers are found deep to the cell wall and protect the cell or otherwise allow it to attach to a surface.    

Assume long earlobes is transmitted in an autosomal dominant manner (where ‘E’ is dominant to ‘e’). Assume a woman with long earlobes (Ee) marries a man with normal earlobes. What is the probability the couple will have a child with long earlobes?

From the list below, choose the bacterial oxygen requirement (at left) that properly matches the description (at right).    1. Facultative anaerobes: tolerate O2 but do not need O2; metabolism is via fermentation 2. Microaerophiles: grow in presence of O2, but can also grow without O2 3. Obligate aerobes: require O2 to survive and do not tolerate poor O2 conditions 4. Aerotolerant anaerobes: killed with even brief exposure to O2 5. Obligate anaerobes: requires some O2, but high concentrations of O2 are inhibitory  

Lab question: An antibiotic that interferes with the activity of ribosomes would have the most direct effect on _____.   

Meiosis involves ___ round(s) of cell division and ___ round(s) of DNA replication.   

Unlike eukarotyes, the prokaryote cell wall is composed of peptidoglycan.   

Compared to ionic bonds, the electrons of covalent bonds are shared equally.