Four of the following organisms belong in the clade of class Reptilia. Which one does not?
a. turtle
b. fish
c. birds
d. lizards
e. snakes
ANSWER: b
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Brown algae belong to the phylum:
a. Rhodophyta. b. Chlorophyta. c. Anthophyta. d. Phaeophyta. e. Dinophyta.
Matching. Choose the one most appropriate answer
for each. 1. ___ adrenal cortex 2. ___ adrenal medulla 3. ___ anterior lobe of pituitary 4. ___ exocrine glands 5. ___ glandular epithelium in gastrointestinal tract 6. ___ gonad 7. ___ hypothalamus 8. ___ pituitary 9. ___ kidneys 10. ___ pancreatic islets 11. ___ parathyroid gland 12. ___ pineal gland 13. ___ posterior lobe of pituitary 14. ___ thymus gland 15. ___ thyroid gland A. secretes one hormone that increases the metabolic rate and another that inhibits calcium release from bone storage sites B. secrete insulin and glucagon C. secretes hormones that prepare accessory reproductive structures for reproduction D. involved in lymphocyte maturation E. secretes tropic hormones, growth hormone, and prolactin F. secretes mineralocorticoids and glucocorticoids G. in many vertebrates, helps to determine the amount and distribution of dark pigments in the skin H. secrete enzymes that help to form angiotensin I. participates in reproductive physiology and responds to photoperiod change J. releases oxytocin and antidiuretic hormone into bloodstream K. secretes a hormone that promotes calcium release from bone storage sites L. produces oxytocin and antidiuretic hormone M. secretes cholecystokinin, secretin, and gastrin N. secretes epinephrine and norepinephrine O. secrete pheromones, milk, tears, sweat, and mucus
_________ occurs when an intravenous injection of antibodies, bsuch as gamma globulin is administered to someone as a treatment. The serum used for emergency treatment of snakebites is an example of this type of immunity.
A) Artificial passive immunity. B) Artificial active immunity. C) Natural passive immunity. D) Natural active immunity. E) Artificial specific immunity.
In contrast to animal cells, yeast or bacterial cell cultures can be grown on fairly simple media without the need to add amino acids or various vitamins and hormones. What is the primary reason for this?
a. Animal cells come from organisms having specialized cell types. b. Animal cells are less capable of transporting small molecules across their membranes. c. Animal cells typically live in association with other cells. d. Animal cells have too many genes to be able to keep track of the biosynthesis of needed metabolites.