Endospores have a multi-layered protective coat consisting of
I. Cell membrane
II. Peptidoglycan mesh
III. Exosporium
A. I only
B. II only
C. I and II only
D. II and III only
E. I, II and III
Ans: E. I, II and III
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Low sperm ____________________ results in the inability of sperm to move through cervical mucus and reach the egg in the oviduct
Fill in the blank(s) with correct word
The chemical group in box 5 of the accompanying figure is a:
a. hydrogen bond.
b. phosphate.
c. nucleotide.
d. pyrimidine.
e. protein
Which process produces more energy than it consumes?
A aerobic respiration B protein synthesis C anaerobic respiration D active transport
Put the steps in the correct order for a birder hearing the call of a whip-poor-will.____ Bird sings "whip-poor-will"____ Sound waves travel to the birder's pinna and enter the canal____ Oval window vibrates____ Basilar membrane vibrates in different regions for each note____ Malleus, incus, and stapes vibrate____ Tympanic membrane vibrates____ Auditory cortex interprets the pattern____ Pressure waves travel through fluid in the cochlea____ Action potentials travel down axons that represent different frequencies____ Cilia of hair cells bend in different regions for each note
What will be an ideal response?