Maintaining Internal Environment of a Cell
Answer the question according to the situation given.
Question 1
What happens to the cheek cells when sugar is added?
The cheek cells shrank.
Question 2
How will this affect the cheek cell?
The internal environment of the cell must be maintained so that it is always optimum for the organism to be active in and to be less dependent on the external environment.
Question 3
How do penguins and polar bears survive in such low temperatures?
Animal in cold climate have thick fur and a thick layer of fat under the skin to maintain their body temperature.
Question 4
How do other animals live in deserts where the climate is hot and dry or in the saline waters of the mangrove swamps?
Animal in the hot desert such as camel stores the fat in the hump, whereas the fennec fox has large ears and wrinkled skin to increase area for heat loss. The proboscis monkey feeds on fruits and plants of the mangrove swamp. It has a unique adaptation by having several stomach, each filled with potent digestive bacteria.
Question 5
Answer the following question into the space provided. Explain why.
I. We sweat more on hot day?
On a hot day, our body tends to absorb heat from the surroundings. This increases the body temperature. Our body responds by sweating. When the sweat evaporates, it helps to cool down the body.
II. We produce more urine on cold days?
On cold days we sweat less. Excess water in the body is removed through urination.
III. Dog pant after running?
After running, the body temperature of the dog increase. When the dog pants, evaporation of saliva on the tongue’s surface helps to reduce the body temperature.
IV. Elephants have big ears?
The elephants have wrinkled skin and big ears to increase their total body surface area. This in turn will increase the rate of heat lost and maintain their body temperature.
Answer the question according to the situation given.
Question 1
What happens to the cheek cells when sugar is added?
The cheek cells shrank.
Question 2
How will this affect the cheek cell?
The internal environment of the cell must be maintained so that it is always optimum for the organism to be active in and to be less dependent on the external environment.
Question 3
How do penguins and polar bears survive in such low temperatures?
Animal in cold climate have thick fur and a thick layer of fat under the skin to maintain their body temperature.
Question 4
How do other animals live in deserts where the climate is hot and dry or in the saline waters of the mangrove swamps?
Animal in the hot desert such as camel stores the fat in the hump, whereas the fennec fox has large ears and wrinkled skin to increase area for heat loss. The proboscis monkey feeds on fruits and plants of the mangrove swamp. It has a unique adaptation by having several stomach, each filled with potent digestive bacteria.
Question 5
Answer the following question into the space provided. Explain why.
I. We sweat more on hot day?
On a hot day, our body tends to absorb heat from the surroundings. This increases the body temperature. Our body responds by sweating. When the sweat evaporates, it helps to cool down the body.
II. We produce more urine on cold days?
On cold days we sweat less. Excess water in the body is removed through urination.
III. Dog pant after running?
After running, the body temperature of the dog increase. When the dog pants, evaporation of saliva on the tongue’s surface helps to reduce the body temperature.
IV. Elephants have big ears?
The elephants have wrinkled skin and big ears to increase their total body surface area. This in turn will increase the rate of heat lost and maintain their body temperature.
