29 Jul WHAT WOULD HAPPEN IF A MARINE ORGANISM WERE PLACED IN FRESHWATER?
Answer the following questions:
List four cell structures that are common to both
plant and animal cells. (4 points)
What structures are unique to plant cells? (2 points)
What structures are unique to animal cells? (2 points)
List five structures observed in the cell images and
provide the function of each structure. (5 points)
Structure 1 and function
Structure 2 and function
Structure 3 and function
Structure 4 and function
Structure 5 and function
William is observing a single-celled organism under a
microscope and notices that it has a nucleus and is covered in small,
hair-like structures.
Provide a probable name for this organism (1 point)
Explain why William came to this conclusion. (2
points)
Where in the cell are the chloroplasts located? (5
points)
In osmosis, which direction does water move with
respect to solute concentration? (2 points)
Answer the following questions:
Explain what would happen to a freshwater unicellular
organism if it were suddenly released into a saltwater environment. Use
the terms isotonic, hypotonic and hypertonic in the
answer. (3 points)
What would happen if a marine organism were placed in
freshwater? (3 points)
A student purchases and weighs 5 pounds of carrots from
a local grocery store. She notices that the grocery store constantly
sprays its produce with distilled water. After returning home, she weighs
the carrots again and discovers that they weigh only 4.2 lbs. They also no
longer seem as crisp and taut. Provide a possible explanation for why the
carrots weighed more at the store, based on the information learned in
this lab. (5 points)
One night, Hans decides to cook a hamburger and
spaghetti with meatballs. To test ideas of surface-to-volume ratios, he
makes a quarter pound hamburger and a quarter pound meatball and cooks
them at the same temperature. Which food item will cook the fastest and
why? (5 points)
While watching a special on animals, Brianna discovers
that hares tend to lose heat through their ears. Based on this and what is
known about surface-to-volume ratios, propose an explanation as to why
hares that live in hot climates (such as the desert) have large, extended
ears. (5 points)
(Application)
How might the information gained from this lab pertaining to cell structures
and diffusion be useful to a student employed in a healthcare related
profession? (20 points)
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