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biology

jmorgant's picture

Animal behavior & gender/sexuality norms

The video “Nature: What Females Want…and What Males Will Do” featured clichéd, even asinine commentary about animals’ reproductive behavior. The DVD showed heterosexual animal interactions punctuated with quotes from biologists and the narrator such as “Males will do anything they can do copulate with a female – we know that!” In a look a male geladas, whose ability to withstand sub-0 nighttime temperatures is demonstrated by the deep red of their chest patches, were described as “Pretty tough!” Female fireflies that mocked another species’ light patterns in order to eat the males were described as “true femme fatales.” In reference to jumping spiders, a biologist explained,  “Females are looking for complex things; they want more and more, so males have evolved these dances.” Red-sided garter snakes that were forcibly inseminated would in a day or so “have another chance at love.” This constant commentary, while meant to be entertaining, was not only distracting but often times offensive because of the way it demonstrated stereotypes about gender and sexuality.

jmorgant's picture

Is rape biological?

I was fascinated by the concept of “cryptic choice” introduced in the video “Nature: What Females Want…and What Males Will Do.” Female red-sided garter snakes are rendered immobile by males competing to inseminate her. They have, however, evolved a means of defense against forced copulation: they can choose which of the snake’s sperm will fertilize their eggs. Another example of “cryptic choice” is seen in ducks’ reproductive systems: they twist opposite ways to make reproduction more difficult. A third of ducks’ copulations are forced, but they produce only 3% of the young. Explained the narrator, “Evolution has given females the edge.” Last week, my psychology-major roommate sent me an article called “Women’s Avoidance of Rape” which, like the video, acknowledged that “Sexual coercion and rape have been documented in many different species.”

Katie Randall's picture

Medical Authority in the Discourses of Disability and Transsexuality

Medical Authority in the Discourses of Disability and Transsexuality

 

Exile and Pride: Disability, Queerness and Liberation is an impossibly far-ranging book. Its author Eli Clare covers many topics that are entangled within his own life: tensions of class, sexuality, gender, abuse, disability, environmentalism and exile. Here I want to use his discussion of the medicalization of disability as a springboard to approach Rachel Ann Heath’s description of the pathologization of transsexuality in The Praeger Handbook of Transsexuality: Changing Gender to Match Mindset. Medicalization and pathologization are not precisely equivalent terms, but to me both represent a process of delegitimizing their subjects and placing this lost authority into the hands of medical professionals. Both produce negative or limiting effects that are not widely acknowledged. In addition, both are oriented towards “curing” or “normalizing” difference.

 

Exile and Pride: disability history

Kaye's picture

Sex and Gender Differences in Cognition and Neurobiology

I just received an announcement about this very relevant conference that is being held at Drexel University College of Medicine on Thursday, October 27, 2011 from 9 am - 4 pm.  Regisration is free.  Please see the website for more information. 

lissiem's picture

Education levels the playing field

The playing field in America is definitely not level, but I believe that education is not at fault.  Education is something everyone should acquire because it allows people to further themselves in life.  For instance, in Shorris' study where he gave lower class a basic education, it allowed them to continue on to college and hold their own.  However, even though many people are becoming education, those who "make it" or find the level where they can compete with others in life, have certain characteristics that allow them to reach this place, and its not their level of education.  It is money and connections.  Shorris' students, although they did not have money, found the connections through his program that allowed them to continue onto college and make a name for themselves.  Other students have money. The ability to pay for college automatically puts that person ahead of one who cannot afford an education. And even on a smaller scale with kids in the same school district, some parents may be able to afford to send them on community service trips or pay for music lessons.  The ability to pay for these things is basically the ability to buy yourself into college, because it is these things, the extra circulars, that make a difference in the college application. Basically, the playing field really can't be leveled when personal finances come into play. 

Cell Structure and Function – Major Concepts and Learning Activities

These Teacher Notes present key concepts and suggest learning activities that engage students in active learning and counteract some common student misconceptions. Students often think of a cell as a static structure consisting of multiple independent parts. They often do not understand how the parts of the cell work together to accomplish the multiple functions of a dynamic living cell. All of the suggested learning activities will help students to meet the Next Generation Science Standards (NGSS).

Section I presents key concepts and learning activities concerning cell structure and function, including differences between prokaryotic and eukaryotic cells and different types of eukaryotic cells. Section II presents key concepts and learning activities concerning the structure and function of cell membranes. The cell membrane is a particularly clear example of how the structure and function of a cell part can be understood in terms of the types and organization of its component molecules. The structure and function of mitochondria and chloroplasts are discussed further in the overview of cellular respiration and photosynthesis (https://serendipstudio.org/exchange/bioactivities#energy). Nucleus and ribosome function is discussed further in the overview of molecular biology (https://serendipstudio.org/exchange/bioactivities#molecbio).

Diffusion and Cell Size and Shape

This analysis and discussion activity helps students understand that cell size is limited by the very slow rate of diffusion over any substantial distance and the insufficient surface-area-to-volume ratio for larger cells.  In addition, students calculate why these problems do not apply to long slender cells or parts of cells (e.g. the axons of neurons that extend from your spinal cord to your foot).

The first attached file has the Student Handout and the second attached file has the Teacher Notes.

Cell Vocabulary Review Game

This game helps students to enjoy reviewing vocabulary related to cells, organelles, and the plasma membrane.  Each card in the deck has a target vocabulary word and two related taboo words that the student may not use as he/she gives clues so the other students in his/her small group can guess the target word.  Many students have trouble learning the substantial new vocabulary required for biology, and this game lets students have fun while reinforcing their understanding of key terms. 

The first file below provides the master copy for creating the card decks for this game, and the second file below provides the teacher notes, including instructions for playing the game.

How do organisms use energy?

Enzymes convert substrates to productThis analysis and discussion activity introduces students to the basic principles of how organisms use energy.

The focus is on understanding the roles of ATP, cellular respiration, and hydrolysis of ATP.

In addition, students apply the principles of conservation of energy and conservation of matter to avoid common errors and correct common misconceptions. 

Gavia's picture

Transects Evolit Final Paper

Final Project: Comparison


      I noticed partway through this course that the concept of storytelling has actually been use in a number of the courses I have taken so for, though it has been presented in different ways and for different purposes.  I have had the experience of three separate professors in three different disciplines give me a very similar assignment.  I found that, when I looked at these pieces in conjunction with this course that they seemed much more connected than I thought they were, I was able to trace some of my own academic development through them, and the styles I used to present them clearly showed how each class biased my presentation.

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