Qualification > Sciences
CHEM AND BIO HELP AND TIPS HERE
K_M:
can someone please give me the answer to the following questions:
1. describe the passage of water from blood in the aorta to its excretion via the urethra
2. outline a treatment of sewage which would produce re-usable water
3.suggest how the build up of sticky mucus would affect a sufferer of cystic fibrosis
4. suggest how a high salt intake can be dangerous to a person's health
thankyou in advance!
nid404:
--- Quote from: K_M on May 03, 2010, 09:55:24 am ---can someone please give me the answer to the following questions:
1. describe the passage of water from blood in the aorta to its excretion via the urethra
2. outline a treatment of sewage which would produce re-usable water
3.suggest how the build up of sticky mucus would affect a sufferer of cystic fibrosis
4. suggest how a high salt intake can be dangerous to a person's health
thankyou in advance!
--- End quote ---
5 hrs
saleemsamer:
--- Quote from: K_M on May 03, 2010, 09:52:08 am ---The fermenters are used to manufacture antibiotics to provide a sterile environment and optimum conditions ie optimum temperature and pH. Microorganisms speed up the process of producing antibiotics.
Adaptations of plants:
POND: eg: canadian pondweed
- stomata present on upper surface only to absorb carbon dioxide and give out oxygen easily and transpiration is not a problem as water is in abundance.
- The upper epidermis contains chlorophyll as absorbing light energy through the water is difficult therefore it increases photosynthesis
- leaves are thing and ribbon-like in order not to get ruptured by water currents
- the stem contains air spaces to provide buoyancy and to allow diffusion of gases throughout the plant. This provide energy to absorb nutrients by active uptake as they respire aerobically
- stems are flexible and ribbon-like
- roots are virtually absent as water is in abundance hence they do not need to absorb water from the soil.
DESERT: eg: cactus
- leaves are reduced to spines to protect the plant from being eaten and to reduce water loss and in order not to get ruptured by strong desert winds
- stem contains chlorophyll to carry out photosynthesis, it is covered in cutilce to prevent water loss
- stem stores water and nutrients
- stem is short and juicy in order not to get ruptured by strong desert winds
- roots are long to provide anchorage and to reach the water table deep underground
--- End quote ---
thx :D
sarasa:
WHere in the car is a catalytic converter fitted in a vehicle?
$H00t!N& $t@r:
--- Quote ---WHere in the car is a catalytic converter fitted in a vehicle?
--- End quote ---
The Catalytic Converter is a device fitted in the exhaust system of your car that effectively reduces the harmful exhaust gases entering the atmosphere.
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version