Love your videos! Please could you make a video on A-Level differentiation and classification and biodiversity? I noticed you started classification so thank you for that :)
the relationship between the metabolic rate and SA:V doesnt appear to have been covered in your videos. I don't understand how larger organisms apear to have higher metabolic rates due to size, however smaller organims are also said to have a high metabolic rate due to high SA:V ratio leading to rapid heat loss. So the relationship between size and metabolic rate is unclear. Any clarification would be much apreciated.
Metabolic rate and SA:vol ratio is not on the A level specs. As you say though, smaller organisms that are endothermic have a problem with heat loss. They have a very large SA:vol ratio, so they lose heat to the environment at a rapid rate. In order to compensate for this, they need to have a high metabolic rate, generating the heat needed to maintain a constant body temperature despite the high rate of heat loss.
It is the ratio simplified, the original ratio was 24:8 but when simplified, the answer 3:1 because 24 divided by 8=3 and 8 divided by 8=1 giving us the simplified ratio of 3:1
Love your videos! Please could you make a video on A-Level differentiation and classification and biodiversity? I noticed you started classification so thank you for that :)
W helping with mocks 🙏👍😎
hi sir thank u so much for these videos, I was wondering if you could do module 6 on gene sequencing before this years exams please? thank you again!
hey sir! i have exams on monday,,,i need help on these topic
the relationship between the metabolic rate and SA:V doesnt appear to have been covered in your videos. I don't understand how larger organisms apear to have higher metabolic rates due to size, however smaller organims are also said to have a high metabolic rate due to high SA:V ratio leading to rapid heat loss. So the relationship between size and metabolic rate is unclear. Any clarification would be much apreciated.
Metabolic rate and SA:vol ratio is not on the A level specs. As you say though, smaller organisms that are endothermic have a problem with heat loss. They have a very large SA:vol ratio, so they lose heat to the environment at a rapid rate. In order to compensate for this, they need to have a high metabolic rate, generating the heat needed to maintain a constant body temperature despite the high rate of heat loss.
@@Freesciencelessons Thank you for your help
can somome tell me why its 3:1??? im not good with math so idk where the one came from
The surface area is 24 and the volume is 8. The surface area to volume ratio is the surface area divided by the volume. 24 divided by 8 = 3
It is the ratio simplified, the original ratio was 24:8 but when simplified, the answer 3:1 because 24 divided by 8=3 and 8 divided by 8=1 giving us the simplified ratio of 3:1
I love you
can you help