Draw a sketch to show the adaptations if you were to do the design.
Assessment of DESIGN
Were you able to DRAW a meaningful DESIGN with logical adaptations?
[LO 1.3]
Animals:
With animals, in contrast to plants, both structural modifications and behavioural adaptations are used to survive drought. Most of the adaptations are intended to limit loss of water so that the animal needs to ingest less water to survive. In some cases the animal has developed a mechanism for storing water.
Examples of structural adaptations
Skin cover
Insects and spiders have a plastic or leathery skin cover (external skeleton) that permits no water to penetrate. This limits their need for water to such a degree that the moisture that they ingest with their food is sufficient.
Reptiles’ skin has also been adapted to limit loss of water to the minimum. In the case of other animals where the skin needs to be moist for other reasons, there are mechanisms that prevent unnecessary loss of water. In the case of frogs, for example, mucous is secreted.
Birds have a sebaceous gland at the base of the tail. This gland secretes oil that spreads all over the body and makes the feathers relatively waterproof. (You may have seen your mother removing the little gland from the chicken before cooking it.)
In the case of mammals the skin could be adapted to limit water loss to a minimum. For instance, dogs perspire through their tongue and not through their skin. That is why they pant when they are hot.
Internal adaptations
Animals’ digestive systems and excretory systems have also been adapted to regulate water loss. In the colon, for example, much of the water that is still present in food residues in the body, is absorbed before defecation takes place. The kidneys determine how much water should be allowed to pass to the bladder before it is excreted.
Camels have been specially adapted to survive for long periods without ingesting water: water is stored in the hump in the form of a chemical compound and can be released when necessary.
Examples of behavioural patterns
The evaporation of water is a common cooling mechanism in animals. Humans, for example, must be able to perspire so that the evaporating perspiration can prevent rapid rising of body temperature, whether it be as a result of heat or of heavy exercise. Animals often demonstrate behavioural patterns through which the body is kept cool so that cooling down through other mechanisms, e.g. perspiring, is not necessary. For instance, they might seek out a shady area, dig tunnels, lie under the sand, be inactive during the day or even migrate or hibernate in summer.
Assignment:
Read up more on this subject and describe FIVE more ways in which plants prevent water loss and FIVE ways in which animals prevent water loss.
Assessment
LO 1: Scientific investigations:
The learner will be able to act confidently on curiosity about natural phenomena, and to investigate relationships and solve problems in scientific, technological and environmental contexts.
Bacteria doesn't produce energy they are dependent upon their substrate in case of lack of nutrients they are able to make spores which helps them to sustain in harsh environments
_Adnan
But not all bacteria make spores, l mean Eukaryotic cells have Mitochondria which acts as powerhouse for them, since bacteria don't have it, what is the substitution for it?
Assimilatory nitrate reduction is a process that occurs in some microorganisms, such as bacteria and archaea, in which nitrate (NO3-) is reduced to nitrite (NO2-), and then further reduced to ammonia (NH3).
Elkana
This process is called assimilatory nitrate reduction because the nitrogen that is produced is incorporated in the cells of microorganisms where it can be used in the synthesis of amino acids and other nitrogen products
There are nothing like emergency disease but there are some common medical emergency which can occur simultaneously like Bleeding,heart attack,Breathing difficulties,severe pain heart stock.Hope you will get my point .Have a nice day ❣️
_Adnan
define infection ,prevention and control
Innocent
I think infection prevention and control is the avoidance of all things we do that gives out break of infections and promotion of health practices that promote life
