1. Explain the three pathways of breakdown in living organisms
2. Describe the process of urine formation in kidneys?
3. Expand the following:
a) ATP b) ADP
4. Answer the following question:
a) Write the formula of limestone?
b) Name the element present in it?
c) Which gas do we get when limestone is heated strongly?
5. What is wrong in the following equation?
H + O H2O Correct and balance it.
6. Name the type of chemical reaction when
a) Water is subjected to electrolysis.
b) Calcium carbonate is heated
c) Silver bromide is exposed to sunlight
7. Why does aluminium not undergoes corrosion but iron does?
8. Name the substance oxidized, reduced, oxidizing agent, reducing agent in the
following: Pb(s) + 4H2O(aq)------ PbSO4(s)+4H2O(l)
b) why is double circulation of blood necessary in human beings?
10. i) Leaves of a healthy potted plant were coated with Vaseline to block the stomata. Will
this plant remain healthy for long? State three reasons for your answer.
ii) state any two differences between autotrophic and heterotrophic nutrition.
pls solve and send me help the need ful
Answers
Answer:
Explanation:
1, In the process of respiration, the first step is the breakdown of glucose, a 6-carbonmolecule breaks into 2 molecules of 3-carbon molecule called pyruvate. This process takes place in the cytoplasm. ... (ii) Anaerobic respiration It takes place in the cytoplasm in the absence of oxygen.
2, The kidneys filter unwanted substances from the blood and produce urine to excrete them. There are three main steps of urine formation: glomerular filtration, reabsorption, and secretion. These processes ensure that only waste and excess water are removed from the body
3,Adenosine triphosphate (ATP) = Adenosine diphosphate (ADP) + Inorganic phosphorus molecule. When a cell demands energy, ATP is broken down to form ADP and emit inorganic phosphorus. Was this answer helpful?
4, Hint: Limestone is a sedimentary rock which consists of Calcium carbonate whose formula is CaCO3 . Calcium carbonate is when heated at 1200∘C it decomposes and carbon dioxide gas is evolved.
5,Click here to get an answer to your question ✍️ What is wrong with the following equation? Mg + O→ MgO Identify the mistake and balance the equation.
6,