1201 - Study guides, Revision notes & Summaries

An element has 8 protons, 9 neutrons, and 8 electrons. What are its atomic number and mass? - 8 and 17 How many and what type of bonds does sulfur usually form in biology? - 2 covalent A molecule that has all non polar covalent bonds would be________. - hydrophobic What substance makes up the interior of a potato tuber? - starch What is an example of a lipid? - triglyceride One characteristic shared by sucrose, lactose, and maltose is that __________. -they are all dissacharides The over...

AQA AS BIOLOGY 7401/2 Paper 2 Version: 1.0 Final *JUN* IB/M/Jun23/E9 7401/2 For Examiner’s Use Question Mark 1 2 3 4 5 6 7 8 9 10 TOTAL Thursday 25 May 2023 Morning Time allowed: 1 hour 30 minutes Materials For this paper you must have: • a ruler with millimetre measurements • a scientific calculator. 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 question...

An element has three stable isotopes with masses of 27.977 amu, 28.976 amu, and 29.973 amu. The heavier two isotopes have an abundance of 4.68% and 3.09%, respectively. What is the mass of the element? A) 27.684 amu B) 29.251 amu C) 28.085 amu D) 30.107 amu E) 28.991 amu - Answer 28.085 amu All of the following will lead to a homogeneous mixture EXCEPT A) sugar and coffee. B) mud and water. C) salt and water. D) ice tea and lemonade. E) vinegar and water. - Answer mud and water. Ho...

Nutrition CORRECT ANSWER-the scientific study of food and how it nourishes the body and influences health Goals of Healthy People 2020 CORRECT ANSWER-Attain high-quality lives free of preventable diseases, achieve health equity, create social and physical environment that promote good health, and promote quality of life. Dietary Reference Intakes (DRI) CORRECT ANSWER-a set of nutritional references values for the United States and Canada that applies to healthy people Recommended Dietar...

Of the following functions, which is most important for the glycoproteins and glycolipids of animal cell membranes? A)facilitated diffusion of molecules down their concentration gradients B)active transport of molecules against their concentration gradients C)maintaining the integrity of fluid mosaic membrane D)maintaining membrane at low temperatures E)a cell's ability to distinguish one type of neighboring cell from another - Answer-E)a cell's ability to distinguish one type of neighb...

AQA AS PSYCHOLOGY 7181/2 Paper 2 Psychology in context Question Paper + Mark scheme [MERGED] June 2022 *JUN* IB/G/Jun22/E8 7181/2 For Examiner’s Use Section Mark A B C TOTAL Time allowed: 1 hour 30 minutes Materials For this paper you may use: • a calculator. 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...

LSU BIOL 1201 Exam 1 Steven Pomarico written exam questions and answers

Biology 1201 Final Exam Moroney LSU Questions With 100% Correct Solutions.

Which four elements make up 90% of life? - C, H, N, O Does DNA have uracil or thymine? - Thymine What is a macromolecule? - Molecule made up of polymers What are the complementary base pairs in DNA - A-T, G-C Which of the following are not pyrimidines? T, C, U, A, G - A, G What causes an element to become an isotope? - Change in # of neutrons What is an enantiomer? - Two molecules that are mirror images of each other What characteristic is specific of tertiary structure? - Interactions w...

AQA AS PSYCHOLOGY 7181/2 Paper 2 Psychology in context Version: 1.0 Final *JUN* IB/G/Jun23/E10 7181/2 For Examiner’s Use Section Mark A B C TOTAL Monday 22 May 2023 Afternoon Time allowed: 1 hour 30 minutes Materials For this paper you may use: • a calculator. 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 t...