Create a list of the features used to describe members of domain Eukarya.
What will be an ideal response?
The list should include the following features: Some may be unicellular but can be multicellular, unbranched phospholipids in the membrane lipids, not all will have a cell wall, will have a nuclear envelope, will have membrane-bound organelles, will have ribosomes, will have introns.
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Experimenters replaced the statoliths in a crayfish statocyst with iron filings and then held a magnet above the animal. Based on your knowledge of the function of statoliths, what would they observe?
A. The crayfish stayed upright. B. The crayfish lay on its side. C. The crayfish turned upside down. D. The crayfish attempted to escape by rapidly swimming backwards. E. None of these choices are correct.
The molecule in the accompanying figure is the pyrimidine ____, which is typically found in DNA but not RNA
a. thymine b. adenine c. uracil d. guanine e. cytosine
In which phase do the following events occur: the chromatin condenses into chromosomes, the nuclear membrane disintegrates, and the centrioles migrate to the poles as spindle fibers are organized?
A) interphase B) anaphase C) prophase D) telophase
A mass of rapidly dividing cells that have potentially lost the ability to regulate cell division is called a(n)
A) neoplasm. B) angiogenesis. C) malignancy. D) metastasis. E) keratosis.