In 1880, Walther Flemming identified ________, threadlike bodies seen in dividing cells.
Fill in the blank(s) with the appropriate word(s).
chromosomes
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A new plant nutrient is discovered that is needed at 5g/kg of plant dry matter and is required for photosynthesis. When this nutrient is added to the plant as a fertilizer, plant growth increases in comparison to a control group that did not receive the nutrient fertilizer.This nutrient is: (check all that apply)
_____ an essential element. _____ a macronutrient. _____ a micronutrient. _____ a limiting factor.
Describe three genetic mechanisms whereby proto-oncogenes can become overexpressed
What will be an ideal response?
Treatment of an animal bite for possible rabies includes
A. washing the bite with soap or detergent. B. debridement. C. infusing the wound with human rabies immune globulin (HRIG). D. postexposure vaccination. E. All of the choices are correct.
Why are the renal artery and vein critical to the process of osmoregulation in vertebrates?
A) The kidneys require constant and abnormally high oxygen supply to function. B) The renal artery delivers blood with nitrogenous waste to the kidney and the renal vein brings blood with less nitrogenous wastes away from the kidneys. C) The kidneys require higher than normal levels of hormones. D) The renal artery and vein are the main pathways regulating how much is produced by the kidneys.