If you were a researcher trying to design a pesticide that would not accumulate by biological magnification, what two properties should the pesticide have?

What will be an ideal response?


It should break down quickly into harmless compounds, and it should be easily excreted.

Biology & Microbiology

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Scientists have found that polypeptides that are normally synthesized in the endoplasmic reticulum are about 20 amino acids longer when they are synthesized by ribosomes not attached to the endoplasmic reticulum

What is a possible explanation for the greater length of these polypeptides? A) Ribosomes attached to the endoplasmic reticulum require fewer amino acids to function. B) The 20 amino acids serve as a signal (peptide) sequence that directs the forming polypeptides to the endoplasmic reticulum, where they are cleaved off during processing. C) The 20-amino-acid sequence helps the endoplasmic reticulum package these proteins for shipping to the Golgi. D) The protein has a different function in the cytosol than in the endoplasmic reticulum.

Biology & Microbiology

The first genetic trait described in humans was ____

a. albinism b. dwarfism c. Marfan syndrome d. multiple sclerosis e. brachydactyly

Biology & Microbiology

A(n) ____________________ is made up of a sugar, a phosphate, and a nitrogenous base

Fill in the blank(s) with correct word

Biology & Microbiology

The all-or-none reaction means that:a

if a stimulus is strong enough, all axons in a nerve bundle will fire simultaneously. b. a neuron will only produce an action potential if it has been depolarized to its threshold level. c. all neurons discharge impulses at the same frequency. d. a neuron can create an action potential of varying intensities. e. either all or none of the neurons will fire impulses when stimulat

Biology & Microbiology