What was the Rf of the yellow pigment?

a. 0.75
b. 0.60
c. 0.44


b

Biology & Microbiology

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What is a defining characteristic of members of the Class Testudines?

A. They lack limbs. B. They have a hard shell. C. They have a kinetic skull. D. They have a four-chambered heart.

Biology & Microbiology

In order for homeostasis to be maintained a(n) ________ must detect a specific stimulus

a. affector b. sensory receptor c. gland d. sensory affector e. effector

Biology & Microbiology

Which of the following is an important feature of the scientific method

a) a good hypothesis b) if research results are not conclusive, the opinion of experts should be relied upon c) anyone should be able to repeat an experiment d) a researcher's methods should not be described once desired results have been obtained e) once demonstrated, conclusions cannot be changed

Biology & Microbiology

At the end of meiosis I there are _______, whereas at the end of meiosis II there is/are ______.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology