Lifesci - Study guides, Class notes & Summaries

LifeSci 2A03 Test 1 Questions and Answers 100% Pass What is the primary function of the mitochondria in eukaryotic cells? They produce ATP through cellular respiration, providing energy for various cellular processes. How do lysosomes contribute to cellular homeostasis? They break down and recycle cellular waste, damaged organelles, and macromolecules to maintain cellular balance. What role does the endoplasmic reticulum play in protein synthesis? The rough endoplasmic reticu...

LIFESCI 2G03 Test 1 Questions and Answers Already Passed Question: What is the main function of enzymes in biological systems? Answer: Enzymes act as catalysts that speed up chemical reactions by lowering the activation energy required for the reaction to proceed. Question: How does the structure of DNA enable it to carry genetic information? Answer: DNA's double-helix structure, composed of nucleotide pairs (adenine with thymine and cytosine with guanine), allows it to store and...

LIFESCI 2A03 Test 2 Questions and Answers Graded A+ What is the primary role of the mitochondria in cellular respiration? The mitochondria generate ATP through oxidative phosphorylation, serving as the powerhouse of the cell. Which phase of the cell cycle is responsible for DNA replication? The S phase is where DNA replication occurs, ensuring each daughter cell has an identical set of chromosomes. How do enzymes function as biological catalysts? Enzymes lower the activation ...

LifeSci 2L03 Poll Questions and Answers Already Passed Which of the following is a key characteristic of prokaryotic cells? - They have a nucleus enclosed by a membrane. - They have mitochondria for energy production. - They lack membrane-bound organelles. What is the primary function of ribosomes in a cell? - Transporting proteins within the cell - Storing genetic material - Synthesizing proteins from amino acids Which macromolecule serves as the main structural component of t...

LIFESCI 2G03 Term Test 1 Questions and Answers Fall 2024 with complete Solution; McMaster University Multiple Choice Questions Choose the one alternative that best completes the statement or answers the question. 1. Assume that a wild-type sequence is 5' AGCCTAC 3'. Which sequence could be produced by a transversion? A. 5' ATCCTAC 3' B. 5' AGCCCAC 3' C. 5' AGCCGCCGCCGCCTAC 3' D. 5' AGCCTGC 3' 2. In an organism DNA, an (A) base is changed to a (C) and the error is ...

LIFESCI 2G03 Test 1 ACTUAL Questions and CORRECT Answers mutation - CORRECT ANSWER- a change in the DNA sequence germline mutation - CORRECT ANSWER- heritable, occurs in germ-line cells, and is passed on/present in all cells of the progeny

LIFESCI 4U03 Quiz Questions With Complete Solutions

MODULE 3 LECTURE 1: Define diffusion Which 4 factors does it depend on? What are the 2 components of random motion? - correct answer diffusion: random/non-directed motion of molecules and small particles in a liquid factors: 1) driving force (i.e. gradient, temp.) 2) mechanical resistance of the surrounding medium 3) structural properties of the molecule 4) active forces causing non-thermal fluctuations (i.e. contraction/relaxation o...

LIFESCI 2G03 Test 1 UPDATED Questions and CORRECT Answers Huntington's disease is also known as Huntington's chorea - CORRECT ANSWER- Huntington's chorea When does the disease begin to appear? - CORRECT ANSWER- 40's and 50's What are the early symptoms TRANSITIONAL PHASE - CORRECT ANSWER- - loss of fine motor control - Slurring speech

LIFESCI 2G03 Term Test 1 Questions and Answers Fall 2024 with complete Solution; McMaster University