Answer:
Crust
Explanation:
Answer:
Platelets, also called thrombocytes, are membrane-bound cell fragments that are essential for clot formation during wound healing.
Explanation:
When she plays football, she uses more energy than usual.
Some of her body systems work faster than normal.
Task:
Describe what happens to her circulation system and her breathing
system when she plays football. Explain why these changes happen.
Draw diagrams to help explain your ideas.
Keywords to include: respiration, heart, lungs, oxygen, carbon dioxide,
alveoli, inhalation, exhalation, diffusion, red blood cells (13 marks)
Answer:
Firstly, when we exercise, or do some activity (in this case football), we use more energy than usual...
The reason some of her body systems work faster than normal, is to keep the body working and in the equilibrium, so that she won’t get tired too fast.
Related to circulation, her blood flow increases, since she needs more oxygen to reach the muscles faster, due to the exercise/activity (Lactic acid builds up, so more oxygen is required.)
Her breathing increases to take in more oxygen(O2), and give out more carbon dioxide(CO2).
Her body respires more(respiration), both aerobically(with oxygen), and anaerobically(without oxygen), lactic acid builds up due to anaerobic respiration.
(Here, energy is released from glucose to generate a substance called lactic acid. ... Therefore anaerobic respiration cannot be used for a prolonged period of time without having damaging effects on a cell.)
When she inhales (Oxygen), it goes to the lungs, to the alveoli ( Alveoli are tiny air sacs in your lungs that take up the oxygen you breathe in and keep your body going)
In the Alveoli, diffusion takes place, this is where oxygen is diffused into the blood, and carbon dioxide is diffused (taken into) into the lungs.
Then we exhale, which gives out the carbon dioxide(CO2), this happens really fast, we also breathe so fast, this process happens within seconds.
Red blood cells contain something called haemoglobin, this combines with oxygen To form oxyhaemoglobin, then when the red blood cell reaches the muscle, it gives the oxygen, converting oxyhaemoglobin back to haemoglobin.
Heart: pumps blood faster (as I said before), to ensure oxygen gets distributed faster to where it’s needed
Answer:
do u know
Explanation:
Sometimes the cuttings wouldn't grow because of infertile soil or because the plant is unhealthy and cant attach itself to gather nutrients.
Hope this helps!
96
19
152
Answer:
19.
Explanation:
Meiosis is a type of cell division in which the sexual producing organisms uses gametes, eggs and sperm to produce four daughter cells. In meiosis the parent produce four daughter cells that are haploid. Each daughter cells carry half the number of the chromosome. Since penguin with 38 number of chromosomes undergo meiosis, each cells produce with have 19 number of chromosomes.
17. Describe both the Earth's rotation and it's revolution. How do they differ???
Can whoever is answering do AT LEAST 2 SENTENCES plzzz
If u do thx so much :D cx