In India, in which age structure category are
the least number of individuals?
a. pre-reproductive
b. early reproductive
c. late reproductive
d. early post-reproductive
e. late post-reproductive
E
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Filopodia and lamellipodia are associated with which cytoskeletal element?
a. microfilaments b. microtubules c. intermediate filaments d. chromatin e. cellulose. microtubules.
The abdominal segments of Drosophila have no appendages. Loss of function of bithorax genes results in appendages forming in these abdominal segments. Therefore, __________
A) bithorax mutations are necessarily recessive B) bithorax genes normally activate appendage-forming genes C) ultrabithorax usually acts to oppose bithorax genes D) bithorax normally activates a gene that negatively regulates appendages in the abdomen E) expression of bithorax wild-type genes suppresses all appendage formation
Which type of covalent bond allows for rotation about the bond axis?
A.) single B.) triple C.) double D.) hydrogen
Which of the following statements about animal cell lipids is false?
A) Fats are a form of lipid that function to store energy. B) Phospholipids are important components of cell membranes. C) Many lipids function as enzymes. D) Cholesterol is a type of lipid that is a component of cell membranes and steroid hormones.