This document contains questions about cell structures, biological molecules, and the cell cycle. It asks the learner to: 1) Label structures in animal and plant cells and explain their functions, as well as why some structures differ between cell types. 2) Discuss whether viruses are considered living organisms and justify their answer. 3) Research the endosymbiont theory and the historical context in which it was proposed. It also asks the learner to analyze nutrition labels of foods to identify biological molecules and recommend products for different groups, consider claims about vegetarianism compromising intake of a molecule group, identify cell cycle stages in a photograph and explain nuclear events, and explain the biological significance of the cell cycle order

1. QUESTIONNAIRE – FIRST TERM - 2016
THE CELL
1) In the Internet or other sources of your choice, find at least three different animal cells and
three plant cells.
a. Print the image, and label each of the structures you can recognize.
b. Explain the function of each of the structures.
c. Try to explain why some of the structures present in a plant cell are not present in an
animal cell, and viceversa. Find concrete examples of structures.
d. Even between animal cells, not all the types show the same development of their
organelles. Explain why. Look for examples.
2) Discuss: are virus living organisms? Justify your answers.
3) The endosymbiont theory was first propose in the 1960´s. Find out the scientific and historical
context in which this theory was proposed, and relate it with its acceptance (or not).
BIOLOGICAL MOLECULES
1) Pick at least five different packaged food products, and search for the nutrition facts label.
Then, for each of the products, answer the following questions.
a. Which biological molecules can be found in the product? Are they all represented in the same
proportion?
b. Taking in consideration what you know about biological molecules and the composition of each
product: would you recommend it for any particular group of people or age? Why?
2) Many people claim that vegetarianism may not be a healthy choice, because the amount of a
certain group of biological molecules that the body receives is highly compromised. Which is this
group? Do you agree with this opinión? Justify clearly.

2. MYTOTIC CELL CYCLE
1) While dividing, some cells can be observed under a microscope. Take a look at this photograph,
and identify the different stages of the cell cycle. Then explain what happens in the nucleus of the
cell in each of the stages.
2) The cell cycle is the complex sequence of events by which cells grow and divide. Explain which
the biological sense of its particular order is.
3) Explain which is the link between cancer and mitosis.