What was the purpose of the Artemia slide prepared with droplets of
What will be an ideal response?
(a) brine and trypan blue only? Negative control; determine the number of dead cells in a normal brine shrimp that has not been exposed to chemical.
(b) brine, trypan blue, and acetic acid? Positive control; allows experimenter to observe the effect of a known toxic substance.
You might also like to view...
During animal development, a fertilized egg divides to form a ball of undifferentiated cells called a:
A. blastula. B. gastrula. C. meristem. D. zygote. E. neurula.
Describe a convenient method for determining gene order from three-point cross results
What will be an ideal response?
In what way(s) can mRNAs be processed?
A) By adding caps and tails to the ends of the mRNAs B) By removing the introns (the noncoding regions) of the mRNAs C) By splicing the exons (the coding regions) of the mRNAs in different ways D) All of the above
Can a blue crab find its identical twin?
A. No, spiral cleavage is determinate. B. Yes, crab larvae reproduce via mitosis. C. No, arthropods are deuterostomes, and twinning only occurs in protostomes. D. Yes, the separation of embryonic cells is rare but not lethal.