Biology

What concentration of salt is isotonic to animal cells Osmosis – The Movement of Water across a Membrane   Before starting, let’s see what you know about the terms hypotonic, isotonic and hypertonic. Examine the diagrams below. Note that the small green circles represent dissolved solutes like salt, glucose, and amino acids. You can assume that the additional space surrounding the […]

Define each term below in terms of solute concentration outside compared to the inside of the cell Osmosis – The Movement of Water across a Membrane   Before starting, let’s see what you know about the terms hypotonic, isotonic and hypertonic. Examine the diagrams below. Note that the small green circles represent dissolved solutes like salt, glucose, and amino acids. You can

Osmosis – The Movement of Water across a Membrane   Before starting, let’s see what you know about the terms hypotonic, isotonic and hypertonic. Examine the diagrams below. Note that the small green circles represent dissolved solutes like salt, glucose, and amino acids. You can assume that the additional space surrounding the solutes is water and that the tan area is INSIDE the

Briefly explain what active transport is and how it differs from passive transport, especially in terms of concentration gradients Diffusion – Movement of Solutes across a Membrane We will be using dialysis tubing to simulate a semipermeable membrane. This tubing allows small molecules (e.g., water, ions, glucose) to pass while preventing large molecules (e.g., macromolecules

What factors affect the movement of molecules across a semipermeable membrane? Which factor plays the greatest role in biological systems Diffusion – Movement of Solutes across a Membrane We will be using dialysis tubing to simulate a semipermeable membrane. This tubing allows small molecules (e.g., water, ions, glucose) to pass while preventing large molecules (e.g.,

Which solution, that in the bag or that in the beaker, is hypotonic compared with the protein solution Diffusion – Movement of Solutes across a Membrane We will be using dialysis tubing to simulate a semipermeable membrane. This tubing allows small molecules (e.g., water, ions, glucose) to pass while preventing large molecules (e.g., macromolecules like

Explain the movement or lack of movement of protein and glucose across the dialysis bag membrane Diffusion – Movement of Solutes across a Membrane We will be using dialysis tubing to simulate a semipermeable membrane. This tubing allows small molecules (e.g., water, ions, glucose) to pass while preventing large molecules (e.g., macromolecules like proteins, starch,

Summarize the results regarding the presence (+) or absence (-) of glucose and protein in the dialysis bag and beaker in Table 2 below Diffusion – Movement of Solutes across a Membrane We will be using dialysis tubing to simulate a semipermeable membrane. This tubing allows small molecules (e.g., water, ions, glucose) to pass while

Diffusion – Movement of Solutes across a Membrane We will be using dialysis tubing to simulate a semipermeable membrane. This tubing allows small molecules (e.g., water, ions, glucose) to pass while preventing large molecules (e.g., macromolecules like proteins, starch, glycogen) from moving across. Be sure you have read over the suggested material before starting this

MDC and LDC Populations Worksheet   Demography is the statistical study of human populations, especially with reference to size, density, distribution, and vital statistics (relating to births, deaths, marriages, health and disease, etc). In making population projections for different countries, demographers look at the profile of the countries’ residents. They ask: What are the ages