The movement of DNA polymerase continues unimpeded if a thymine dimer is present in the DNA double helix.
Answer the following statement true (T) or false (F)
False
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Isoetes is the only species of (living) lycophytes that contains ____
Fill in the blank with the appropriate word.
Which of the following statements about plant macronutrients is/are true? Check all that apply.
_____ They approach or exceed 1% of a healthy plant's dry weight. _____ They reduce the need for CO2 during photosynthesis. _____ A deficiency in any one can have severe effects on a plant's growth. _____ They can have important implications for human nutrition. _____ The ability of the plants to take up minerals is affected by soil pH.
A channel that opens in response to the binding of a specific molecule, which is usually NOT the solute that passes through the channel is called a(n)_____.
a) positive-gated channel b) ligand-gate channel c) voltage-gated channel d) electric-gated channel e) charge-gated channel
Which of the following nitrogenous bases is NOT found in molecules of DNA?
a. adenine b. guanine c. uracil d. thymine e. cytosine