Phosphate is introduced to ecosystems via:a

fertilizers.
b. laundry detergents.
c. dish detergents.
d. all of these.
e. none of these


D

Biology & Microbiology

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Non-true-breeding hairy-leaved plants are crossed with smooth-leaved plants.

a. What genotypic and phenotypic ratios would you expect for the potential offspring? b. Suppose you perform such a cross, collect data, and do a chi-square test to aid in data analysis. How many degrees of freedom would there be? c. Suppose your chi-square value is very large (>25). What does this indicate about your experiment and/or hypothesis?

Biology & Microbiology

Which molecule is the final electron acceptor in respiration?

a. water b. ATP c. carbon dioxide d. oxygen e. hydrogen

Biology & Microbiology

DNA is a double-stranded molecule and RNA is a single-stranded molecule.

a. true b. false

Biology & Microbiology

Which of the following is NOT a possible restriction enzyme recognition site?

A: 5'GAAATTTC-3' B: 5'ACGTACGT-3' C: 5'AATTTTAA-3' D: 5'AAAATTTT-3' E: All of the above are possible recognition sites.

Biology & Microbiology