The ________ can be used to measure whether a substance is an acid or a base

Fill in the blank(s) with correct word


pH scale

Biology & Microbiology

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Cells with a relatively simple cell morphology that do not have a true membrane-delimited nucleus are called

A. eukaryotes. B. nokaryotes. C. urkaryotes. D. prokaryotes.

Biology & Microbiology

Symptoms of an allergic reaction such as increased secretion of mucus, swelling, and pain are due to the release of ________ from mast cells

Fill in the blank(s) with correct word

Biology & Microbiology

According to this plot, how are growth rate and doubling time related?

A) directly proportional B) inversely proportional C) not related to one another D) equally proportional to one another

Biology & Microbiology

Why do scientists believe that mitochondria may have evolved from ancient bacteria?

a. because both have their own DNA and ribosomes b. because both have five chromosomes c. because both are surrounded by a cell wall d. because the shapes and size of both are exactly the same

Biology & Microbiology