Large quantities of nutrients are bound tightly in ________ structure; they are not readily available until released by the activities of decomposers

Fill in the blank(s) with correct word


organic matter

Biology & Microbiology

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In mammalian kidneys, blood in the vasa recta and fluid in the loop of Henle flow in opposite directions to create a ____________ multiplier system.  

A.  reversible B.  homeostatic C.  countercurrent D.  exponential E.  stepped

Biology & Microbiology

Arabidopsis thaliana is a small angiosperm related to mustard that is commonly used in plant research experiments. In one experiment, an antifreeze protein from a species of bacteria was inserted into the genome of Arabidopsis thaliana, and the plants were exposed to freezing temperatures. Plants without the antifreeze protein had 90% mortality, while those with the antifreeze protein only had 20% mortality. What was the dependent variable in this experiment?

A. the bacteria B. the temperature C. Arabidopsis thaliana D. the percent of the plants surviving E. the presence or absence of the antifreeze proteins

Biology & Microbiology

Four of the five answers listed below are functions performed by the same organ. Select the exception

a. regulates pH of body fluids b. removes toxic substances from the blood c. storage and interconversion of carbohydrates, fats, and proteins d. inactivates hormones e. formation of urea from nitrogenous waste

Biology & Microbiology

Which of the following contains a coded message of how to construct a protein? 

A. ATP B. tRNA C. ribosome D. mRNA

Biology & Microbiology