The ________ was developed in the late 1920s by Theodore Svedberg. He originally used it to determine the sedimentation rate of proteins
Fill in the blank with correct word.
Answer: ultracentrifuge
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How is budding of bacteria to produce daughter cells different from binary fission?
A. The chromosome does not need to be replicated. B. The bud doesn't receive any DNA. C. The cytoplasmic division is unequal. D. A septum must form during budding.
A researcher found a beautiful plant while traveling in Alaska and collected its seeds. When she came back to Florida, she soaked some seeds in pure water and some in water with a hormone
When she put the seeds in soil to grow, only the seeds that had been soaked with the hormone germinated. The hormone most likely was _____. A) gibberellin B) abscisic acid (ABA) C) auxin D) ethylene
Cells in the thyroid gland produce and secrete thyroid hormone (a polymer of amino acids) that helps to regulate metabolism. What organelle is most likely abundant in cells of the thyroid gland?
A) mitochondria B) rough endoplasmic reticulum C) free ribosomes D) lysosomes
Which of the following statements regarding protozoa is FALSE?
A) Protozoa are unicellular eukaryotes. B) Nearly all protozoa cause disease. C) Most protozoa reproduce asexually. D) Protozoa are common in water and soil. E) Some protozoan pathogens are transmitted by arthropod vectors.