Answer nd do explain. Which of the following statements is correct about index fossils?a. They are a group of vertebrates that have four limbs, and include mammals, amphibians, and some reptiles.b. They are the fossil remains of an organism that lived in a particular geologic age, used to determine the age of therocks in which they are found.O c. They are the first discovered fossils of groups that are still alive today (e.g. Archaeopteryx for birds).O d. They are fossils that represent the oldest known member of a clade.O e. They are often based on worms, jellyfish and other soft-bodied animals.Clear my choice with 9 bands, each with a 'normal thickness' of agar at the base, with different amounts of an antibiotic added.antibiotic added. The next band in contains enough antibiotic to kill the majority of the E. coli cells. Travelling fuantibiotic concentration further increases up to 1000X lethal dose in the very centre. E. coli are placed at the verdays, spread across its surface to the very centre. Before crossing each band, there is a short pause in growth.What is the role of the antibiotic in this experiment?a. The antibiotic controls for genetic driftb. The antibiotic selects for the initial laboratory strain of E. coliThe antibiotic slows growth so the colony shape can be observed more easilyd. The antibiotic prevents contamination from the environmente.None of these answers is correctClear my choice

Which of the following statements is correct about index fossils? O a. They are a group of vertebrates that have four limbs, and include mammals, amphibians, and some reptiles. b. They are the fossil remains of an organism that lived in a particular geologic age, used to determine the age o rocks in which they are found. O c. They are the first discovered fossils of groups that are still alive today (e.g. Archaeopteryx for birds). O d. They are fossils that represent the oldest known member of a clade. O e. They are often based on worms, jellyfish and other soft-bodied animals. Cleas

Which of the following statements is correct about index fossils? O a. They are a group of vertebrates that have four limbs, and include mammals, amphibians, and some reptiles. b. They are the fossil remains of an organism that lived in a particular geologic age, used to determine the age o rocks in which they are found. O c. They are the first discovered fossils of groups that are still alive today (e.g. Archaeopteryx for birds). O d. They are fossils that represent the oldest known member of a clade. O e. They are often based on worms, jellyfish and other soft-bodied animals. Cleas

Curren'S Math For Meds: Dosages & Sol

11th Edition

ISBN:9781305143531

Author:CURREN

Publisher:CURREN

Chapter10: Reconstitution Of Powdered Drugs

Section: Chapter Questions

Problem 1.5P

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DRAW IT A bacterial culture was in log phase in the following figure. At time x, an antibacterial compound was added to the culture. Draw the lines indicating addition of a bactericidal compound and a bacteriostatic compound. Explain why the viable count does not immediately drop to zero at x. Time Log10 of number of cells
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