Please help! I’ve tried hard to find the answers but I’m struggling.
1.A firefly relies on a protein called luciferase to produce light. Luciferase is an enzyme that catalyzes a light-producing reaction in a special organ in the insect's abdomen. Name three organelles that you expect to be abundant in the firefly cells based on the organelle function AND why?
2.Two eggs are soaked in vinegar to remove the shell and expose the thin semipermeable membrane that surrounds an egg. One egg is placed in a hypotonic solution (distilled water) and the other is placed in a hypertonic solution (highly concentrated salt water). (1) What passive transport process will occur? (2) Describe the movement of molecules that will occur with each of these eggs.
3.Sensors on a spider's legs feel the vibrations of a trapped insect and relay the information to the spider's brain through nerve electrical signals. For nerve cells to maintain these electrical potentials, sodium must be removed from the cell and potassium must be moved into the cell. Describe why this process is a form of active transport and what is required for active transport to occur?
4.Using specific substances used and released by photosynthesis and cellular respiration, explain how they are both related and chemically opposite from one another.
5.While cutting potatoes to increase their surface size before you cook them, you accidentally cut your finger. Once the bleeding stops, underlying cells begin to divide to repair the damage through the cell cycle. During interphase, how does a cell prepare for division? Describe cell division, including the processes of mitosis and cytokinesis. Be sure to describe the mitotic steps.
6.The diagram below shows a cellular process that occurs in organisms. How can you determine if it is Mitosis or meiosis? Explain how mitosis and meiosis are alike and how they are different. Provide at least two similarities and three differences.
Answers: 1
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How does a lytic infection differ from a lysogenic infection?
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Female luna moths (actias luna) attract males by emitting chemical signals that spread through the air. a male hundreds of meters away can detect these molecules and fly toward their source. the sensory organs responsible for this behavior are the comblike antennae visible in the photograph shown here. each filament of an antenna is equipped with thousands of receptor cells that detect the sex attractant. based on what you learned in this chapter, propose a hypothesis to account for the ability of the male moth to detect a specific molecule in the presence of many other molecules in the air. what predictions does your hypothesis make? design an experiment to test one of these predictions.
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Biology, 22.06.2019 16:00
Darwin’s hypothesis about how life changes over time is now called?
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Please help! I’ve tried hard to find the answers but I’m struggling.
1.A firefly relies on a protei...
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