What is the main function of the TATA-binding protein?
A. to inhibit DNA replication until S phase
B. to inhibit transcription until transcriptional activators bind
C. to help initiate DNA replication
D. to promote initiation of transcription
Answer: D. to promote initiation of transcription
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While lancelets, members of the lineage ____, live mostly buried in the sand in warm, shallow marine habitats, they
do have well-developed segmented muscles and can move.
a. Petromyzontoidea b. Placodermi c. Cephalochordata d. Urochordata e. Myxinoidea
Much medical advice towards heart health indicates that you should eat less sodium (table salt). Notable higher risks of high sodium may include high blood pressure and damage to arteries or organs in your body. If you eat a single meal with large amounts of salt to suit your taste, which of these may result within minutes, as the sodium enters your bloodstream?
A. Your blood will become hypotonic, and water in your body tissues will flow into your arteries, inflating them. B. Your blood will become hypertonic, and water in your body tissues will flow into your arteries, inflating them. C. Simple diffusion of water and sodium will both balance in an isotonic condition between arteries and body tissues. D. You should expect no change in the concentration gradient because of a single meal, rather than lifestyle and diet. E. Your blood will become hypotonic, and water in your arteries will flow into your tissues, inflating them.
Which animal nurses its young, has forward facing eyes, nails on its fingers and toes, and a moist nose?
a. a lemur b. a tarsier c. a bird d. a new world monkey e. a human
After being filtered blood leaves the glomerular capillaries through the ____
a. renal artery b. renal vein c. afferent arteriole d. efferent arteriole e. peritubular capillaries