Question
How is blood glucose level maintained?
✓
Answer
The blood glucose level is maintained by the joint but antagonistic action of insulin and glucagon.
Insulin is hypoglycemic hormone while glucagon is hyper/glycemic hormone.
When there is excess sugar in the blood, more insulin is secreted by the pancreatic islets. This causes the conversion of blood glucose into glycogen. This process is known as glycogenesis. This causes decline in the level of glucose in the blood.
When there is less blood glucose level then the glucagon is secreted. It causes stored glycogen to be converted into glucose. This process is called glycogenolysis.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Explain BOD and its effects on aquatic ecosystem.
Pioneer species.
What is an incomplete ecosystem? Explain with the help of suitable example.
In pea plants, the colour of the flower is either violet or white, whereas human skin colour shows many gradations. Explain giving reasons, how it is possible.
In the following table of interspecific interactions, fill the blanks with (+) sign for beneficient interaction, (-) sign for detrimental and 0 for neutral interaction.
|
Species A
|
Species B
|
Name of Interaction
|
|
+
|
|
Mutualism
|
|
|
-
|
Competition
|
|
|
-
|
Predation
|
|
+
|
|
Parasitism
|
|
+
|
|
Commensalism
|
|
|
0
|
Amensalism
|
The cytological observations made in a number of insects led to the development of the concept of genetic/ chromosomal basis of sex-determination mechanism. Honey bee is an interesting example to study the mechanism of sex-determination. Study the schematic cross between the male and the female honey bees given below and answer the questions that follow:
- Identify the cell divisions ‘A’ and ‘B’ that lead to gamete formation in female and male honey bees respectively.
- Name the process ‘C’ that leads to the development of male honey bee (drone).
Define co-extinction and give a example.
Label the given male reproductive system you have studied.
Differentiate between:
Keystone species and endangered species.
Keystone species and endangered species.
Label parts $'A\ ’$ and $'B\ ’$ from the following diagram and answer the following questions
$(a)$ What is the partial pressure of $O_2$ in part $'B\ ’$ ?
$(b$) What is the partial pressure of $CO_2$ in part $'A\ ’$ ?
$(c)$ How many alveoli are present in the lungs?
→$(a)$ What is the partial pressure of $O_2$ in part $'B\ ’$ ?
$(b$) What is the partial pressure of $CO_2$ in part $'A\ ’$ ?
$(c)$ How many alveoli are present in the lungs?