Write an Equation to Describe the Variation $r$ A) $r = k a$

question 231

Multiple Choice

Write an equation to describe the variation. Use k for the constant of proportionality.
-a varies directly as $r$

• A) \(r = k a\)
• B) \(a = k r\)
• C) \(r = \frac { k } { a }\)
• D) \(a = \frac { k } { r }\)

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Definitions:

Fertilization

The process by which male and female gametes combine to form a zygote, initiating embryonic development in sexually reproducing organisms.

Blastocoel

Fluid-filled cavity of a blastula.

Cellular Development

The process by which cells undergo growth and differentiation to form tissues, organs, and ultimately an organism.

Zona Pellucida

A thick, transparent coating surrounding the ovum of mammals, playing a crucial role in fertilization.