An organelle that probably evolved from an independent organism that moved inside and began to live within a eukaryotic cell is the:
A) Golgi apparatus. B) endoplasmic reticulum.
C) nucleus. D) mitochondrion.
Answer: D
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Describe at least 3 adaptations of deep-sea fishes for improving feeding efficiency
What will be an ideal response?
Which protein binds to the silencer sequence and promotes transcriptional silencing in the presence of glucose?
A) Gal2 B) Mig1 C) Gal4 D) Gal10 E) Gal80
Water diffuses through certain organs such as the kidneys and bladder much faster than would occur by passive diffusion through a lipid bilayer alone. What accounts for this more rapid rate of water transport in these organs?
A. the composition of lipids changes to promote water transport B. the presence of molecules that bind water and change its membrane permeability properties C. presence of an ATP-driven enzyme for water transport D. presence of a water pump E. presence of aquaporin channels for facilitated diffusion of water
Identify the animal with the most advanced cephalization
a. a flatworm b. an arthropod c. a chordate d. a mollusk e. an echinoderm