Nucleic acids Study guides, Revision notes & Summaries

The structure of a strand of DNA. - Answer-it is a double helix, like a twisted ladder. the ladder rings are nucleotide subunits and they have a covalent bond to the sugar phosphate backbone (made of deoxyribose and a phosphate group) What are the nucleotide subunits? - Answer-adenine, guanine, cytosine, and thymine How are the subunits held together? - Answer-through a hydrogen bond What are the nucleotide subunits compliments? - Answer-Adenine and thymine cytosine and guanine How does D...

What is homeostasis - the process whereby living organisms regulate their cells and bodies to maintain relatively stable internal conditions What are the characteristics of living things - 1. Cells and Organization 2. Energy use and metabolism 3. Response to environmental changes 4. Regulation and homeostasis 5. Growth and Development 6. Reproduction 7. Biological Evolution atom - the smallest component of an element having the chemical properties of the element molecule - Two or more ...

BIOL 111 FINAL TAMU – FLETCHER QUESTIONS AND ANSWERS 100% SOLVED The element present in all organic molecules is Carbon Cell membranes have distinct inside and outside faces. Which of the following statements is the most likely explanation for the membrane's asymmetrical nature? The two sides of a cell membrane face different environments and carry out different functions Which of the following statements is true about buffer solutions? They maintain a relatively constant pH when either aci...

ATI TEAS 7 Biology Review. a. TEMPERATURE HOMEOSTASIS ¾ skin is involved in temperature homeostasis through sweat glands a. Controlled by negative feedback system a. Receptor i. Sensory cells in dermis of skin b. Control center i. Hypothalamus c. Effector i. Sweat glands, blood vessels, and muscles (shivering) ii. Evaporation of sweat cools body iii. Vasodilation of blood vessels release heat into environment to lower body temperature SEBACEOUS VS SWEAT GLANDS a. Both exocrine gl...

Essential Biochemistry 3rd Edition By Charlotte W. Pratt – Kathleen Cornely – Test Bank Question type: Multiple Choice 1) Which of the following is a characteristic of Chargaff’s rules? 1. A) A + T = C + G 2. B) A + G = C + T 3. C) A + G = C + U 4. D) all organisms have identical amounts of all four nucleotides 5. E) none of the above Answer: B Difficulty: Medium Section Reference: 3-1 Learning Objective: Describe the structural features of DNA and RNA 2) A base found exclusive...

BIOD 171 Essential Microbiology Portage Learning Module 1 Exam Questions and Answers 2023 BIOD 171 M1: Module 1 Exam - Requires Respondus LockDown Browser + Webcam Question 1 3 / 3 pts True/False. A virus is classified as a microbe. Correct! True Although viruses are not living and as such are not considered microorganisms, they can, however, be classified as microbes, a more general term that includes microorganisms and viruses. False Question 2 3 / 3 pts True or False: The...

Microbiology for the Healthcare Professional 2nd Edition VanMeter Test Bank UPDATED & VERIFIED VERSION 2023 CHAPTER{01-25} Chapter 01: Scope of Microbiology VanMeter: Microbiology for the Healthcare Professional, 2nd Edition MULTIPLE CHOICE 1. In the sixteenth century a father-and-son team, by the name of , produced a compound microscope consisting of a simple tube with lenses at each end. a. van Leeuwenhoek b. Semmelweis c. Janssen d. Hooke ANS: C REF: p. 3 2. “Animalcules” were first descr...

Test Bank For Lehninger Principles of Biochemistry 6th Edition By Favid L. Nelson, Micheal M. Cox| All Chapters| Complete Questions and Answers (LATEST VERSION). Chapter Chapter 1 1 The Foundations Foundations of of Biochemistry Biochemistry Multiple Choice Questions 1. Cellular foundations Cellular foundations Pages: 33-4 DDiffffiicculttyy: 11 Anns: : CC In a bacterial cell, the DNA is in the: A) cell envelope. B) cell membrane. cell membrane. C) nucleoid. D) nucleus. E) ribosomes. ri...

Version 1 1 CHAPTER 1 1) Which technique creates a three-dimensional dynamic image of blood vessels? A) Digital subtraction angiography B) Magnetic resonance imaging C) Dynamic spatial reconstruction D) Positron emission tomography 2) Magnetic resonance imaging is based on the movement of A) electrons in a magnetic field. B) carbons in a magnetic field. C) protons in a magnetic field. D) cells in a magnetic field. 3) The delivery of a radioactive compound to the body to study the met...

Test Bank General, Organic, and Biological Chemistry 5th Edition by Janice Smith. Isbn:9781260732023. General, Organic, and Biological Chemistry 5e test bank. smith 5e test bank for General, Organic Biological Chemistry. TOC-=Chapter 1: Matter and Measurement Chapter 2: Atoms and the Periodic Table Chapter 3: Ionic Compounds Chapter 4: Covalent Compounds Chapter 5: Chemical Reactions Chapter 6: Energy Changes, Reaction Rates, and Equilibrium Chapter 7: Gases, Liquids, and Solids Chap...