In which of the following divisions of Archaea would you be most likely to find organisms that flourish in hot, salty environments?
A. Cyanobacteria
B. Euryarchaeota
C. Thaumarchaeota
D. Crenarchaeota
B
You might also like to view...
Cells undergo exocytosis ____
a. to pump protons down a concentration gradient b. when replicating c. to secrete protein and wastes from the cell d. to ingest nutrients e. as a means of cellular protection
Matching II. Choose the most appropriate answer
1. ___ autonomic nervous system 2. ___ frontal lobe 3. ___ cerebellum 4. ___ corpus callosum 5. ___ ganglion 6. ___ hypothalamus 7. ___ limbic system 8. ___ medulla oblongata 9. ___ midbrain 10. ___ nerve net 11. ___ peripheral nervous system 12. ___ reticular formation 13. ___ meninges 14. ___ neurotransmitter molecule 15. ___ white matter A. integrates body position, motions, balance B. in cnidarians; based on reflex pathways devoted to swimming and feeding C. messages from here arouse the brain and maintain wakefulness D. the cortical region that coordinates muscles required for speech E. all parts of nerve cells outside the brain and spinal cord F. acetylcholine is an example G. reflex control center for breathing, heart rate, and blood pressure H. axons of the central nervous system that are sheathed with fatty myelin I. at top of the brainstem bordering the cerebral hemispheres; influences learning and emotional behavior J. motor neurons that are divided into sympathetic and parasympathetic divisions K. membrane coverings over brain spinal cord L. contains the tectum; receives and integrates sensory information that is largely sent on to the forebrain for further neural processing M. connects right and left cerebral hemispheres N. group of nerve cell bodies that form an integrative center O. contains centers concerned with body temperature regulation and with salt and water balance
The bicoid gene product is normally localized to the anterior end of the embryo. If large amounts of the product were injected into the posterior end as well, which of the following would occur?
A) The embryo would grow extra wings and legs. B) The embryo would probably show no anterior development and die. C) Anterior structures would form in both ends of the embryo. D) The embryo would develop normally.
The function of a mordant in staining procedures is to
A) fix the specimen to the slide. B) provide contrasting color. C) decrease the solubility of dye molecules. D) remove dye from certain structures. E) damage cellular structures so they take up dyes better.