Movement in and out of cells

Potatoe in distilled water: This was the stiffest and least flexible potato because it absorbed water, therefore it swelled and became firm.

Natural potato: This potato was less stiff but more flexible than the one soaked in distilled water.

Potato in concentrated solution: This was the least stiff one of all and the most flexible.
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Enzymes

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Human Nutrition

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Diahorrea and cholera

1) Name signs/symptoms caused by cholera.

Diarrhoea, vomiting, weaknessies and getting dehydrated are the signs.

Feeling sick is the symptom.

2) State ways in which the bacterium spreads in the village.

The first way of how the bacterium spreads in the village is by the spreading of the river, through flies that transport the bacteria, throught dirty hands and throught food not washed.

3) What is diarrhoea?

Diarrhoea is when faeces are discharged from the body, usally in liquid form.

4) How does the cholera bacterium cause diarrhoea?

It produces a toxin that attaches to the wall of the small intestine and affects the villi and makes it secrete chloride. Which causes water from the blood to move into the lumen by the process of osmosis.

5) How did the boy treat his father?

The boy treated his father by filtrating and boiling water at 100ºC to kill the bacteria. Then he gave his father the pure water with half of a teaspoon of salt and 6 of sugar that contained all the minerals that he needed.

6) Name the different actions which the boy taught to the people in the village to prevent the disease.

The ways to prevent the diseaseare:

  1. Washing your hands before eating and cooking;
  2. By filtrating water;
  3. By boiling water to kill the bacteria; and
  4. By building toilets of at least 20 meters far of the river.
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Pathogens

This was a group work and I worked with Joaco Venini, Tomas Borda, Bauti Olaizola and Tomas Anania

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cellular respiration

 1 – State the uses of energy in our body.

  • It contracts the muscles, so we can move our parts of the body;
  • It is used in reactions that produce different molecules;
  • It is used to build up larger molecules from smaller ones;
  • It is used to transmit nerves impulses.

2 – Construct a mind map about respiration. You may do it on a sheet of paper or use any of the tools available such as bubble.us

You should include:

a- Definitions;

b- Types: Aerobic and anaerobic (in muscles and yeast);

c- Equation in words;

d- Amount of energy released

3 – Explain the meaning of “oxygen debt”

Anaerobic respiration produces an “Oxygen debt”. This is the amount of oxygen needed tooxidise lactic acid to carbon dioxide and water. The existence of an oxygen debt explains why we continue to breathe deeply and quickly for a while after exercise.

 4- Search in the internet a short video, which explains why the breathing rate does not return to normal immediately after vigorous exercise stops.

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Gas exchange

Inspired air Expired Air
Oxygen 21% 16% Respiration (raw materials)
Carbon Dioxide 0.04% 4% Respiration (waste products)
Water vapour (humidity) Variable  Always high (100%) Depends on the environment/atmosphere
Temperature Variable Always warm Mucus
Dust Variable Few, or no dust Ciliated cells
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Description

Task: write a description of a place you’ve been to on holidays. Focus on the natural environment and/or one person you’ve met. (220-260 words)

 

Once when I was a child my parents had the idea of visiting the cerro colorado in Córdoba.

When we arrived there it was amazing. The view was incredible. The place was enormous.  My little brother was amused. The view was incredible, the place fantastic, all was nature. We had been there for 2 weeks. We made differents tours, went to different areas from the place.

The hotel in which we stayed was very good, it had all that we need. We rest a lot so when the sun went out we could enjoy all the day. Luckily all the days were perfect. The only thing that wasn’t good was that I am scared of high places but I could do it.

We had a really good experience and we enjoyed a lot. I learnt a lot of that place. 

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Booktube

In our language class we had to red some books and do a booktube. This is mine about The Tango Birefing.

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Diahorrea and Cholera

1)Name signs/symptoms caused by cholera.
Cholera is an infectious disease that causes severe watery diarrhea, which can lead to dehydration and even death if untreated. It is caused by eating food or drinking water contaminated with a bacterium called Vibrio cholerae.

2) State ways in which the bacterium spreads in the village.
By the water, by eating without cleaning their hands, by insects and by using things with bacterias.

3)What is diarrhoea?
Diarrhoea is having more frequent, loose, watery poo, which may be referred to as ‘stools’.Diarrhoea is the second largest cause of death of young children in the world. (The greatest cause is pneumonia.)
There are many different causes of diarrhoea. One of these is infection by a bacterium, which causes the disease CHOLERA.

4) How does the cholera bacterium cause diarrhoea?
The bacterium of Cholera can be spread through water and food that has been contaminated with faces from an infected person.

5) How did the boy treated his father?
Firstly he cleaned the water, then he add salt and sugar to the water and he made his father drinked it.

6) Name the different actions which the boy taught to the people in the village to prevent the disease.
He washed people’s hands,he cleaned the water and he protecred the food from the insects

Video

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