Chapter 3 Quiz: Cell Membrane and Transport Concepts

Chapter 3 Due May 26 at 11:59pm Points 10 Questions 10 Available until May 26 at 11:59pm Time Limit None Allowed Attempts Unlimited Instructions This quiz contains 30 questions in the quiz bank and 10 are randomly chosen for each attempt. You have multiple attempts and the HIGHEST score will be kept. Take the Quiz Again Attempt History Attempt Time Score LATEST Attempt 1 14 minutes 10 out of 10 Score for this attempt: 10 out of 10 Submitted May 25 at 3:28am This attempt took 14 minutes. Question 1 171 pts Which type of membrane transport involves the cell engulfing molecules with its cell membrane? Correct! endocytosis diffusion exocytosis symport

Correctl Correct! Correctl Question 2 171 pts What is the energy currency of our cells? Glucose DNA Proteins ATP Question 3 171 pts Which of the following statements is correct regarding net diffusion? The lower the temperature, the faster the rate. The greater the concentration gradient, the faster the rate. The rate is independent of temperature. Molecular weight of a substance does not affect the rate. Question 4 171 pts A red blood cell placed in pure water would swell and burst

neither shrink nor swell shrink swell initially, then shrink as equilibrium is reached Question 5 171 pts The RNA responsible for bringing the amino acids to the ribosome for protein formation is sSRNA MRNA rRNA Correct! tRNA Question 6 171 pts Which of the following describes the plasma membrane? a double layer of protein enclosing the plasma a single-layered membrane that surrounds the nucleus of the cell Correctl a phospholipid bilayer surrounding the cell a membrane composed of tiny shelves or cristae

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Correctl Correctl Question 7 1/1 pts A cell engulfing a relatively large particle will likely utilize phagocytosis pinocytosis exocytosis receptor-mediated endocytosis Question 8 1/1 pts A gene can best be defined as a three-base triplet that specifies a particular amino acid an RNA messenger that codes for a particular polypeptide a segment of DNA that carries the instructions for one polypeptide chain noncoding segments of DNA up to 100,000 nucleotides long Question 9 1/1 pts Which organelle is responsible for processing and packaging proteins destined for export from the cell?

endoplasmic reticulum Correctl Golgi apparatus lysosomes peroxisomes Question 10 1/1 pts Beta cells in the pancreas produce and secrete the protein hormone insulin. You would expect to see a relatively large amount of which organelles in these cells? smooth endoplasmic reticulum, and lysosomes mitochondria, and cilia Correctl Golgi apparatus, rough endoplasmic reticulum cytoskeleton, and peroxisomes Quiz Score: 10 out of 10

Chapter 3 test

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