<span><span>
Jellyfish are found in every
ocean of the world. They are even found in some freshwater lakes and
ponds.[6]
</span><span>
Jellyfish range from the size of
a thimble or the eraser tip of pencil to approximately eight feet in
diameter with tentacles that reach 200 feet. That is as long as two blue
whales.[1]
</span><span>
Each jellyfish tentacle is armed
with thousands of cells called cnidoblasts. Inside the cnidoblasts are
nematocysts, each of which contains a coiled stinging thread. When a
fish or other object becomes tangled in the tentacles, the pressure
inside the nematocysts causes the venomous threads to uncoil like a
spring-loaded harpoon</span></span>
Answer:
Water, carbon dioxide, and oxygen are among the few simple molecules that can cross the cell membrane by diffusion (or a type of diffusion known as osmosis ). Diffusion is one principle method of movement of substances within cells, as well as the method for essential small molecules to cross the cell membrane.
When the crime rate of a location is high, the appeal of that location decreases. This decrease in appeal causes lesser tourists to want to come visit, therefore negatively impacting tourism.
Answer:
2) a feedback mechanism that regulates blood glucose level
Answer:
The correct answer is - Benedict's solution for the test for glucose in food.
Explanation:
Benedict's solution is a test that is used to check if there is a presence of glucose in a food sample or not. It is possible due to the oxidation of the aldehyde present in the glucose turns to carboxylic acid in presence of the clear blue solution of sodium and copper salts or benedict's solution.
In presence of Benedict's solution the color of the sample turns yellow to orange with an increase in heat, however, the initial color of the solution is aqua blue.
Thus, the correct answer is - Benedict's solution for the test for glucose in food.