Answer:
A,B and E
Explanation:
- I+: I refers to the lac repressor, the + indicates that the repressor is functional
- P+: P refers to the promoter region and the + indicates that the promoter is functional
- Oc: O refers to the operator region, but the Oc indicates that the operator is constitutive ie. that it is always on/ can't be turned off.
- Z-: Z refers to the LacZ gene which produces β-galactosidase. Z- indicates that this gene is non-functional
- Y+: Y refers to the LacY gene which produces the permease protein. Y+ indicates that this gene is functional
So based on the breakdown above:
- C is not true because the lac operon is an inducible system. The operator needs to be able to be repressed. In this case the operator is constitutive (always on) which is not the correct form.
- D is not true because Z-, no β-galactosidase is produced.
Only A, B and E apply.
Answer:
destruction of biodiversity.
contamination of food chain.
lack of potable water.
mortality
diseases
Answer:
a) higher, lower
Explanation:
The correct answer will be higher and lower. that is option a is correct. At higher intensity workouts more glucosed are used up than amino acids because more amount of energy is required, whereas at low or medium intensity workout amino acids are used up more than glucose.
Answer: Somatic Nervous system
Explanation:
The instruction to the muscles to avoid the oncoming bicyclist is voluntary and controlled by the SOMATIC NERVOUS SYSTEM, which is known to
- control the speed of impulses from the brain to the effectors (muscles)
- affects skeletal muscles and
- control activities that are mainly voluntary like swerving to avoid hitting a bicyclist
