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AQA A-LEVEL COMPUTER SCIENCE PAPER 1 MARK SCHEME LATEST VERSION A-level COMPUTER SCIENCE 7517/1 Paper 1 Mark scheme June 2020 Version: 1.0 Final *206A7517/1/MS* Mark schemes are prepared by the Lead Assessment Writer and considered, together with the relevant questions, by a panel of subject teachers. This mark scheme includes any amendments made at the standardisation events which all associ...

AQA A-LEVEL CHEMISTRY PAPER 3 VERSION 1 A-level CHEMISTRY Paper 3 Wednesday June 2022 Morning Time allowed: 2 hours Materials For this paper you must have: • the Periodic Table/Data Booklet, provided as an insert (enclosed) • a ruler with millimetre measurements • a scientific calculator, which you are expected to use where appropriate. Instructions • Use black ink or black ball-point pen. • Fill in the boxes at the top of the page. • Answer all...

AQA A-LEVEL CHEMISTRY PAPER 1 INORGANIC AND PHYSICAL CHEMISTRY A-level CHEMISTRY Paper 1 Inorganic and Physical Chemistry June 2022 Afternoon Time allowed: 2 hours Materials For this paper you must have: • the Periodic Table/Data Booklet, provided as an insert (enclosed) • a ruler with millimetre measurements • a calculator, which you are expected to use where appropriate. Instructions • Use black ink or black ball-point pen. • Fill in the boxes at t...

AQA A-LEVEL BUSINESS 3 PAPER 3 VERIFIED SOLUTION A-level BUSINESS Paper 3 Business 3 Morning Time allowed: 2 hours Materials For this paper you must have: • a calculator • the Insert. Instructions • Use black ink or black ball-point pen. • Fill in the boxes at the top of this page. • Answer all questions. • You must answer the questions in the spaces provided. Do not write outside the box around each page or on blank pages. • Do all rough work in...

AQA A-LEVEL BUSINESS 3 PAPER 3 MARK SCHEME A-level BUSINESS 7132/3 PAPER 3 BUSINESS 3 Mark scheme June 2022 Version: 1.0 Final Mark Scheme *206A7132/3/MS* Mark schemes are prepared by the Lead Assessment Writer and considered, together with the relevant questions, by a panel of subject teachers. This mark scheme includes any amendments made at the standardisation events which all associates par...

MARK SCHEME AQA A-LEVEL BUSINESS 2 PAPER 2 A-level BUSINESS 7132/2 PAPER 2 BUSINESS 2 Mark scheme Version 1.0 Final *196A7132/2/MS* Mark schemes are prepared by the Lead Assessment Writer and considered, together with the relevant questions, by a panel of subject teachers. This mark scheme includes any amendments made at the standardisation events which all associates participate in and ...

AQA A-LEVEL BUSINESS 1 PAPER 1 MARK SCHEME A-level BUSINESS 7132/1 PAPER 1 BUSINESS 1 Mark scheme 2022 Version: 1.0 Final *196A7132/1/MS* Mark schemes are prepared by the Lead Assessment Writer and considered, together with the relevant questions, by a panel of subject teachers. This mark scheme includes any amendments made at the standardisation events which all associates participate in an...

PORTAGE LEARNING BIOD 121 Nutrition Exam 6 The first stage of gestation, during which rapid cell division occurs is known as the blastogenic stage. 1. Development occurs from about week two through the week and is called the embryonic stage. The fetal stage occurs from week nine to the end of the pregnancy and is a period of growth. 2. All pregnancies are divided into (A) equal time periods, known as (B) , each lasting approximately 13-14 weeks. A baby born after the thirty sev...

PORTAGE LEARNING BIOD BIOD 121 Nutrition Exam 5 Determine the maximum heart rate and the target zone for a 30 year old. 1. Maximum heart rate 2. Target zone to beats/minute 1. 190 2. (220-130=190) (190 x .6 = 114), (220-130=190) (190 x .9 =171) The primary fuel used for a 100 meter sprint would be Carbohydrates In what types of activities are fats an important source of energy? Fat is an important energy source for activities lasting more than 20 minutes that are performed at a lo...

PORTAGE LEARNING BIOD 121 Nutrition Exam 4 Fat soluble vitamins have all the following characteristics except: They are inorganic Fat soluble vitamins have all the following characteristics except: Correct! All are synthesized by the body 1. Lack of this vitamin can lead to rickets in children and osteoporosis in adults. 2. Xeropthalmia is a result of a deficiency of . 1. Vitamin D 2. Vitamin A 1. is important in the formation of collagen. 2. Like Vitamin A...

PORTAGE LEARNING BIOD 121 Nutrition Exam 3 Which of the following questions is NOT true of the basal metabolic rate (BMR)? Physical activity is a component of the BMR Define the term hyperplasia. Hyperplasia is an increase the number of fat cells in our body Using the guidelines for Body Mass Index someone with a body mass index of 18.5 to 24.9 would be considered . at a healthy weight estimates a person’s body fat by measuring the degree of resistance to an electrical flow. Bioele...

PORTAGE LEARNING BIOD 121 Nutrition Exam 2 Specific parts of the GI tract include the mouth, esophagus, (A) , small intestine, (B) and (C) . Other organs such as the liver, gallbladder and pancreas aid in digestion but are not considered part of the GI tract. A. stomach B. large intestine C. rectum Explain the cause and symptoms of heartburn. Heartburn is a burning sensation in the esophagus due to an improper closing of a sphincter that allows stomach acids to enter into the esophagu...

PORTAGE LEARNING BIOD 121 Nutrition Exam 1 List the two key hormones that are responsible for increasing and decreasing hunger and explain the role of each. Gherlin – hormone produced in the stomach that increases hunger. Leptin – hormone produced by fat cells that decrease hunger. List two examples of Environmental external forces that can influence eating habits and comment on your personal experience with each of them. Economics, Lifestyle, Cultural/Religious Beliefs, Local Environmen...

Portage Learning Chem 210 - Module 7 Problem Set A scientist uses the term flux regarding a biochemical pathway. What does flux mean? Flux is the rate of flow through a biochemical pathway. A particular pathway breaks down proteins into amino acids. Is this an anabolic or a catabolic pathway? Catabolic. This is degradation of a molecule. The acetyl group is connected to CoA to make Acetyl-CoA. A) What specific atom of CoA connects to the carbon atom on the...

Portage Learning Chem 210 - Module 6 Problem Set What is the difference between a nucleoside and nucleotide? A nucleoside is formed from the covalent bonding of a base, purine or pyrimidine, to either ribose or 2-deoxyribose. Nucleotides are built from a nitrogen-containing organic base, a monosaccharide, and phosphate. What characteristic makes purines and pyrimidine heterocyclic? Each has a ring with nitrogen in the ring instead of all carbon atoms in the ring. ...

Portage Learning Chem 210 - Module 4 Problem Set Is the following molecule an aldose or ketose? Briefly explain. ketose. There is a C=O on the third carbon from the top. Which carbon in erythrose would tell you if the monosaccharide is D or L? Give the carbon’s number in your answer. On carbon number 3, which is the penultimate carbon. Glucose and mannose are epimers. Name another epimer of glucose besides mannose. Galactose. ...

Portage Learning Chem 210 - Module 3 exam True or False: The amino acids serine and threonine both contain sulfur atoms. FALSE True or False: The following secondary structure shown below is an example of a beta- turn. FALSE True or False. The side chain of phenylalanine is bonded to the backbone nitrogen atom. FALSE True or False: The name of the molecule that binds to an enzyme is called the holoenzyme. FALSE True or False: An inhibitor ...

Portage Learning Chem 210 - Module 3 exam True or False: The amino acids serine and threonine both contain sulfur atoms. FALSE True or False: The following secondary structure shown below is an example of a beta- turn. FALSE True or False. The side chain of phenylalanine is bonded to the backbone nitrogen atom. FALSE True or False: The name of the molecule that binds to an enzyme is called the holoenzyme. FALSE True or False: An inhibitor ...

Portage Learning BIOD 171 Microbiology Lecture Exam Key 1-6 Exam 1. True or False: A virus is considered a microorganism. False. Viruses are not living and as such are not considered microorganisms. Viruses can, however, be classified as microbes, a more general term that includes microorganisms and viruses. 2. What is the smallest biological unit of life? A cell. 3. At a generalized level, all cells are comprised of what? Macromolecules* *A student may also answer: Proteins,...

PORTAGE LEARNING BIOD 171 LAB EXAM 1-9 LAB 1 Answer the following questions 1. What three elements are used in an autoclave to sterilize equipment? heat, pressure, and steam 2. What is the minimum temperature an autoclave must be set at to achieve sterile condition? 125°C 3. If you are working in a lab in which an autoclave is not available, and you are pressed for time, which would you chose to best sterilize your equipment? Hot steam or hot air? Explain why you chose your...