Answer:
Yes.
Explanation:
Cystic Fibrosis is a recessive disease. It could most likely skip several generations. If the two people have the disease then were to have children, each child has a 25% chance of being born with the disease.
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:
v
Explanation:
2. Carbohydrates, lipids and proteins.
- Carbohydrates after digestion produce: glucose
- Lipids after digestion produce: fatty acids and glycerol
- Protein after digestion produce: amino acids
3. Photosynthesis helps by converting carbon dioxide into oxygen and glucose. The glucose is used as food for the plant and oxygen is a by-product. Cellular respiration converts the oxygen and glucose into water and carbon dioxide. Carbon dioxide and water are both by-products and ATP is the energy that is produced from this process. They both work hand-in-hand to make ATP.
Answer;
C. a scanning electron microscope
Explanation;
-Electron microscopy is a technique for obtaining high resolution images of biological and non-biological specimens. There are two main types of electron microscope; the transmission EM and the scanning EM.
-Scanning electron microscopes allow scientists to find the shape and surface texture of extremely small objects, including a paperclip, a bedbug, or even an atom.
-These microscopes slide a beam of electrons across the surface of a specimen, producing detailed maps of the surface of objects.
