Archivo por meses: mayo 2016

Homeostasis: Controlling the Blood Sugar Levels

Our Biology teacher, Magdalena Ravagnan, asked us to work in groups in order to answer a set of questions. I worked with Luna, Nico and Juan.

Last lesson we studied how we control the body temperature.

Another factor that should be kept constant is the levels of glucose in the blood.

Which are they?

Study this web-page for revision.

b) Level of glucose increases »» Brain sends message to the pancreas through neurones »» Pancreas releases insulin »»  Insulin allows glucose to be taken into cells where is used in respiration. Glucose is also converted to glycogen by liver and muscle which is stored in the liver and muscles  »» Levels of blood sugar lowers  »» Blood sugar levels return to normal

Level of glucose decreases  »»  Brain sends message to the pancreas through neurones »» Pancreas releases glucagon  »» liver starts to break down stored glycogen and convert it back into glucose which can be used by cells »» Blood sugar levels raise »» Blood sugar levels return to normal

  c) Negative feedback is when there is a change in the normal behaviour of the body (a change in blood sugar levels in this case) and the body reverses these changes and make them return back to its set levels.
a) Diabetes type1
Causes: Body does not produce the right amount of insulin or, in some cases, does not produce any at all.
Treatment: Daily injections of insulin, managed diet, planned exercise to balance energy needs with food and insulin intakes.
Diabetes type 2
Causes: Pancreas does produce insulin but cells stop responding properly to the insulin.
Treatment: lose weight and eat a carefully balanced diet can often control or even reverse the illness. However for some people oral drugs and even injections of insulin may be needed.
c)  Genetic engineering involves the extraction of genes from one organism, or the synthesis of genes, in order to place them in another organism (of the same or another species) such that the receiving organism expresses the gene product.

Fakebook: Honore Gabriel Riquetti, Conte de Mirabeau

Our History teacher, Lenny Ambrosini, asked us to work in pairs and prepare a fakebook of a significant character/person in the French Revolution. I worked with Delfina Nicora and we had to do our presentation on Honore Gabriel Riquetti, a moderatenobleman that defended the Third Estate.This is so that we expand more on our knowledge on the French revolution (which is a topic that we are currently studying in History) and can have a first hand look on the «influencers» of this revolution.

This is our fakebook.

Video de Literatura: Martin Fierro

Nuestra profesora de Literatura, Camila Aliberti, nos pidió de trabajar en grupos para recrear una escena del Martin Fierro. Al mismo tiempo, nos concedió tener libertad para adaptarla y usar nuestra creatividad. Esto es porque estuvimos estudiando la literatura gauchesca y el Martin Fierro principalmente. Mi grupo (que incluye a Luz, Juani, Tomas A., Epi y a mi) decidimos basarnos en la escena donde Moreno y Martin Fierro forman parte de una payada contrapunto. Tambien la adaptamos a hoy en dia y en vez de ser Moreno  buscando venganza porque Martin Fierro mato a su hermano, es Moreno buscando venganza porque Martina Fierro le fue infiel a su hermano. Aun asi, queriamos mantener el contraste del presente y el pasado, tambien el espiritu gauchesco, entonces lo esribimos en una payada.

Este es nuestro video.

Este es nuestro guion.

Endocrine System Activity

Our Biology teacher, Magdalena Ravagnan, asked us to answer the following questions which have to do with the topic we are now studying in class, Endocrine system.

1)Define Hormone
2)Search a picture which shows the glands which secrete hormones in the human body
3)a)State the effects of adrenaline
b)Choose a picture which shows a situation in which adrenaline is secreted. Explain

1)Hormones are chemical substances that help to regulate processes in the body

3) Effects:

  • It triggers the body’s fight-or-flight response
  • It prepares your body for a vigorous action.
  • Gives you more energy, your heart beats faster.
  • triggers the blood vessels to contract to re-direct blood toward major muscle groups, including the heart and lungs
  • The body’s ability to feel pain also decreases as a result of adrenaline,
  • noticeable increase in strength and performance, as well as heightened awareness, in stressful times.
  • adrenaline’s effect can last for up to an hour.