True scientists - Study guides, Class notes & Summaries

AAMC MCAT Practice Exam 1 Questions and Answers 2024 In the chromatography of the reaction mixture, water absorbed on cellulose functioned as the stationary phase. What was the principal factor determining the migration of individual components in the sample? A) Hydrogen bonding B) Solute concentration C) Stationary phase concentration D) Thickness of paper -Answer-A) Hydrogen bonding The answer to this question is A because the relative amount of hydrogen bonding to the stationary phas...

Animal Diversity, 8e (Hickman) Chapter 1 Science of Zoology and Evolution of Animal Diversity 1) A characteristic of science is that A) it is not explained by natural laws. B) its hypotheses are testable. C) its conclusions are final. D) it is not falsifiable. E) it seeks to define the vitalistic forces of life. Answer: B Section: 01.01 Topic: Principles of Science Learning Objective: 01.01 Explain that science consists in testing, possibly rejecting, and improving our simplest and be...

CHAPTER 3—ECOSYSTEMS: WHAT ARE THEY AND HOW DO THEY WORK? MULTIPLE CHOICE 1. Scientists estimate that tropical rain forests contain up to half of the earth’s land plants and animal species. What percentage of the world’s land surface do tropical rain forests cover? a. 2 b. 4 c. 8 d. 10 e. 12 ANS: A PTS: 1 TOP: 3-0 Core Case Study: Tropical Rain Forests Are Disappearing KEY: Bloom's: Remember NOT: New 2. The disappearance of the tropical rain forests is an import...

CHEM 210 Biochemistry Exams 1-8 and Final Exam. Question 1 3 / 3 pts True or False: According to the Module, a compound with a molecular mass of 1,000 g/mol is considered a macromolecule. True Correct! False Question 2 3 / 3 pts True or False: Biomolecules can have only two functional groups. True Correct! False Question 3 3 / 3 pts True or False: The following functional group is an alcohol. True Correct! False Question 4 3 / 3 pts True or False: In a eukaryot...

Test Bank for Essential Cell Biology 5th Edition Alberts Hopkin ESSENTIAL CELL BIOLOGY, 5th EDITION CHAPTER 1: CELLS: THE FUNDAMENTAL UNITS OF LIFE Unity and Diversity of Cells 1-1 Living systems are incredibly diverse in size, shape, environment, and behavior. It is estimated that there are between 10 million and 100 million different species. Despite this wide variety of organisms, it remains difficult to define what it means to say something is alive. Which of the following can be desc...

True or false: observations allow scientists to draw tentative explanations called hypotheses. -false -true - ANSWER true The negatively charged components of atoms are referred to as: -anions -electrons -neutrons -protons -cations - ANSWER electrons Which one of the following contributes to the measurement referred to as atomic mass? -protons and electrons -protons and neutrons -neutrons only -electrons and neutrons -protons, electrons, and neutrons - ANSWER protons a...

Biochemistry Final Exam - Portage Learning questions and answers graded+. True or False: According to the Module, a compound with a molecular mass of 1,000 g/mol is considered a macromolecule. - correct answers.False True or False: Biomolecules can have two or more different functional groups. - correct answers.True True or False: The following functional group is an amine. C2H5NH2 - correct answers.True True or False: In a eukaryotic cell, the organelles called per...

Stern's Introductory Plant Biology, 14e (Bidlack) Chapter 1 What Is Plant Biology? 1) The early scientist who first demonstrated experimentally that plants do not have the same modes of nutrition as animals was A) Nehemiah Grew. B) Carl Willdenow. C) Alexander von Humboldt. D) Sir J. D. Hooker. E) J. B. van Helmont. Answer: E Topic: Diversification of Plant Study Bloom's: 1. Remember Learning Outcome: 01.04 List the aspects of botany with which each of the major botanical disciplines ...

 -1.5 magnitude Sirius appears 25x brighter than 2 magnitude Polaris.  “All neutron stars are pulsars, but not all pulsars are neutron stars” FALSE  “Spectroscopic Binary” is the term given to a pair of stars that we can determine are orbiting each other only by measuring their periodic Doppler shifts.  A 6.8 solar mass neutron star does NOT exist.  A loop of gas and charged particles following the magnetic field lines between sunspot’s poles is a Prominence/...

Test Bank For Essentials of the Living World 6Th Edition By George B. Johnson Complete All Chapters . The simplest organisms do not have nuclei. In the list below, which group has the simplest organisms? A) Bacteria B) Fungi C) Plantae D) Animalia E) Protista Answer: A Explanation: The Bacteria and the Archaea lack even the nuclear membrane which defines a true nucleus. Please see section 1.1. Section: 01.01 Topic: Levels of Biological Organization Bloom's: 2. Understand Learning O...