The ________ is a part of the sperm that contains enzymes that spill out from the sperm and digest through the layers surrounding the secondary oocyte to allow fertilization
Fill in the blank(s) with correct word
acrosome
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What happens when action potentials stimulate a muscle at a rate that does not allow relaxation between contractions?
A. The strength of contraction decreases with subsequent stimuli. B. The strength of contraction increases with subsequent stimuli. C. The strength of contraction does not change. D. More motor units are recruited.
Match the following items with the correct phrases.
_______1. Have an internal organization described as a “9 + 2” arrangement of microtubules. _______2. A type of glycocalyx having an organized structure and found firmly attached to bacterial cell walls. _______3. Some play a role in bacterial conjugation (“bacterial mating”). _______4. They often serve an antiphagocytic function. _______5. Terms like monotrichous and peritrichous describe their location. _______6. Some of these thin, hairlike appendages enable bacteria to adhere to surfaces. _______7. Some Pseudomonas species produce this type of glycocalyx, which lacks an organized structure and is only loosely attached to the bacterial cell wall. _______8. Used to make Hib vaccine. a. pili b. slime layer c. procaryotic flagella d. capsules e. eucaryotic flagella
The periplasmic space separates the plasma from the outer membrane in Gram-negative bacteria
a. true b. false
The fins of the coelacanth have rod-shaped bones and thick muscles
Indicate whether the statement is true or false