Types of cells are prokaryotes and eukaryotes

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Reference no: EM133520805

Assignment:

1. Which of the following is an example of a community?

A) The rocks,birds, trees, mountains, canyons,rivers,insects,elk, and wolves in Yellowstone National Park

B) The bears, deer, trees, birds, and other species living near Lake Tahoe

C) All monarch butterflies in Yosemite

D) All environments on Earth that have life

2. All of the coyotes living in Joshua Tree National Park represent which level of the hierarchy of life?

3. What is the smallest functional unit that can perform all of life's tasks?

4. The two basic types of cells are prokaryotes and eukaryotes. Identify which type of cell (or both) has each of the following:

Cell type
DNA
Organelles with their own membranes
Cell membrane
Simple and small cells
Nucleus
Larger and more complex cells

5. The number of black pepper moths in England increased after factories started burning coal, which covered tree bark, making it look black. In this situation, black moths were better camouflaged and less likely to be eaten by birds. Many countries including England are transitioning to renewable energy, which will not make tree bark look black. What do you think will happen to the number of black and white moths in the future?

6. Sulfur has an atomic number of 16 and has many isotopes. The most abundant isotopes are have? Neutrons? Electrons?

7. Which column of the periodic table contains elements that all have a complete outer shell?

Would you expect them to be likely to form bonds with other elements?

8. Magnesium reacts with two chlorides to make MgCl2. Magnesium has 2 electrons in it's outer shell- it donates one electron to each of the chlorides. The positive charge on magnesium is attracted to the negative charges of the chlorides. What type of bond is this?

9. Circle all of the following statements that are true:

A) Water is a polar compound where the oxygen atom pulls the electrons toward it and becomes more negative

B) Hydrogen bonds make water cohesive and give it surface tension

C) Hydrogen bonds allow water to resist changes in temperature

Frozen water is more dense than liquid water and sinks to the bottom of lakes and oceans

10) What is the pH of water? If you add lemon juice (acidic) to your water, would you expect pH lemon juice?

Reference no: EM133520805

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