A larynx is found at the beginning of each insect trachea
Indicate whether the statement is true or false.
ANSWER: False - spiracle
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The secretory systems of Type III and Type IV pathogenic bacteria differ in their mode of attacking cells in what way?
A. Type III systems bind to the cellular membrane by slimy mucilage and toxins diffuse across the membrane, whereas Type IV systems infect cells using pili as transfer tubes. B. Type III systems infect cells using pili as transfer tubes whereas Type IV systems bind to the cellular membrane by slimy mucilage and toxins diffuse across the membrane. C. Both systems attach to cells in the same way but they differ merely in the chemicals that they inject into the host cell. D. Type III systems use flagella modified as "syringes" to inject materials into cells they are infecting whereas Type IV systems use modified pili as transfer tubes. E. Type III systems use modified pili as transfer tubes whereas Type IV systems use flagella modified as "syringes" to inject materials into cells they are infecting.
Which equation is used to calculate the free energy associated with a reaction?
a. ?G = ?H-T?S b. ?G = ?H+T?S c. ?G = - ?H+T?S d. ?G = ?S+T?H e. ?G = -?S-T?H
Bottlenose dolphins breathe air but can sleep in the ocean because _____
A) they sleep for only thirty minutes at a time, which is the maximum interval they can cease breathing B) they fill their swim bladder with air to keep their blowholes above the surface of the water while they sleep C) they move to shallow water to sleep, so they do not need to swim to keep their blowholes above the surface of the water D) they alternate which half of their brain is asleep and which half is awake
Place the steps of sporulation in the correct order.1. Replication of DNA2. In-folding of the plasma membrane to enclose a copy of DNA, forming forespore and septum3. Engulfment of the forespore with a second membrane4. Deposition of spore cortex5. Spore coat formation6. Maturation and release of endospore
What will be an ideal response?