The total energetic costs of reproduction per unit of time are referred to as an individual's ________
Fill in the blank(s) with correct word
reproductive effort
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What is the path of urine from formation to excretion in the mammalian kidney?
A. collecting duct ? renal pelvis ? ureter ? urinary bladder ? urethra B. renal pelvis ? ureter ? urinary bladder ? urethra ? collecting duct C. ureter ? collecting duct ? renal pelvis ? urinary bladder ? urethra D. collecting duct ? ureter ? urinary bladder ? renal pelvis ? urethra E. urethra ? collecting duct ? renal pelvis ? ureter ? urinary bladder
Matching. Choose the one most appropriate answer
for each. 1. ___ nephron 2. ___ aldosterone 3. ___ tubular secretion 4. ___ ADH 5. ___ conduction 6. ___ convection 7. ___ pilomotor response 8. ___ ectothermic 9. ___ evaporation 10. ___ glomerular filtration 11. ___ hemodialysis 12. ___ hypothermia 13. ___ heterothermic 14. ___ radiation 15. ___ tubular reabsorption A. do not maintain the same body temperature at all times; are capable of internal heat production B. heat energy is released to the air when liquid water converts to gaseous form C. bulk flow of protein-free plasma from capillaries into Bowman’s capsule D. animals with more or less constant body temperature E. emission of heat from body surface when environmental temperature is lower than the body temperature F. movement of ions from peritubular capillaries into nephron tubules G. loss of too much body heat H. heat next to the body’s surface undergoes mass transport by air or water currents I. active and passive transport of solutes from peritubular capillaries into the glomerular capillaries J. a long, slender, tubular unit in the vertebrate kidney that forms urine K. body temperatures rise and fall with environmental changes L. secreted by adrenal glands; influences sodium reabsorption M. passive transport of water; active and passive transport of solutes out of the nephron into peritubular capillaries N. heat energy is transferred from high to low temperature regions due to collisions between adjacent molecules O. released from the posterior lobe of the pituitary in response to hypothalamic signals P. toxic substances are extracted from blood circulating in cellophane tubes suspended in a warm-water bath Q. erection of hairs and feathers by smooth muscles in the skin
All living organisms are dependent upon plants because
a. plants produce carbon dioxide as a by-product of photosynthesis. b. as producers, they form the base of food chains. c. they function to prevent erosion and reduce desertification. d. they remove oxygen from the atmosphere. e. they contribute to the problems generated by the greenhouse effect.
In a replication fork, how do the leading and lagging strands differ?
a. In the lagging strand, new DNA is synthesized 3?–5?. b. Each strand is replicated by a unique type of polymerase. c. The lagging strand is replicated discontinuously. d. DNA polymerase proceeds more slowly on the lagging strand. e. The lagging strand is subject to more error and requires more repair.