The molecule that can carry foreign DNA into host cells is a(n) ____.

A. cloning vector
B. transcriptase
C. DNA ligase
D. endonuclease
E. DNA polymerase


Answer: A

Biology & Microbiology

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A trait with a heritability value of 0.75 indicates that 75% of the phenotypic variability seen in the population is caused by ____ of the population

a. genetic differences b. environmental differences c. concordance d. epigenetic effects e. the equal contribution of the genotype and the environment

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Which of the following are primarily structures

for the packaging of cellular secretions for export from the cell?

a. Golgi bodies b. mitochondria c. lysosomes d. ribosomes e. endoplasmic reticulum

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The smallest cell structure that would most likely be visible with a standard (not super-resolution) research-grade light microscope is a _____

A) mitochondrion B) microtubule C) ribosome D) microfilament

Biology & Microbiology

As TSH levels increase, thyroxine levels should decrease

Indicate whether the statement is true or false

Biology & Microbiology