Hi everyone,
I’m studying for my Biology Paper 2 exam and could really use some help with a couple of topics. Can anyone explain the following concepts to me?
What do mitochondria do in our cells?
Can someone break down the stages of cellular respiration for me (glycolysis, Krebs cycle, and oxidative phosphorylation)?
I have some data showing how much oxygen cells are using over time. The data indicates that without glucose, the oxygen consumption starts at 0 µmol and increases slowly to 25 µmol in 10 minutes. When glucose is present, the consumption starts increasing more rapidly, reaching 120 µmol in 25 minutes. How should I interpret this to understand how cellular respiration changes with and without glucose?
| Time (minutes) | Oxygen Consumption (µmol) | Condition |
|----------------|----------------------------|-----------|
| 0 | 0 | - Glucose |
| 5 | 10 | - Glucose |
| 10 | 25 | - Glucose |
| 15 | 50 | + Glucose |
| 20 | 100 | + Glucose |
| 25 | 120 | + Glucose |
- Genetics:
How does DNA replication happen in our cells? What are the main enzymes involved?
Can someone explain the basics of Mendelian inheritance and how it works for single-gene (monohybrid) and two-gene (dihybrid) traits?
I have a family tree chart for a certain trait. How can I figure out how this trait is inherited?
Thanks a lot for your help!!!