Which of the following is not one of the major cell types of lymphoid tissue?
What will be an ideal response?
fibroblasts
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DNA fingerprints, such as those first used by Alec Jeffries, reveal variations in _____ between different individuals
a. blood type b. cancer-causing mutations c. transgenes d. the locations of restriction enzyme recognition sites e. STR alleles
How do flagella bend?
a. myosin motor proteins slide microtubules over each other b. dynein motor proteins slide microtubule doublets over each other c. myosin motor proteins slide actin filaments over each other d. microfilaments contract due to the action of kinesin e. actin filaments contract due to the action of myosin
Chemicals in both plants and animals serve as which
of the following to predators? a. warnings b. repellents c. toxins d. bad tastes e. all of these
Which of the following structures allows a bacterium to propel itself through its environment?
a. microfilaments
b. intermediate filaments
c. microvillus
d. flagellum
e. microtubule