Answer:
the answer is d, nucleic acids arranged in a double helix
A thin, moist, selectively, permeable membrane.
Answer: C. The number of foxes will grow, and owls will have to fight harder for mice
Explanation: Since there is no one hunting the foxes, the population will grow creating more competition for the owls.
Answer:
Answer is D . Those that degraded to acetyl=CoA.
Explanation:
An amino acid is glucogenic when it can be converted to glucose through gluconeogenesis, while the amino acids that can be converted to ketone bodies are said to be ketogenic.
They can be degraded into acetyl CoA.
Answer:
None of these.
Explanation:
Cancer mutations affect cell cycle regulators.
Cell cycle is a highly regulated process by the regulators that can promote cell cycle or inhibit the cycle. Genes that encode for those regulators are classified into two groups:
- proto-oncogenes-encode for positive regulators such as growth factor receptor. If a cancer mutation occurs in the proto-oncogene it becomes oncogene and its product is overactivated. The increased avtivity of positive regulators leads to abnormal cell division.
- tumor suppresor-the products of such genes blocks the cell cycle, but after the mutation they become inactive, which leads to uncontrolled cell cycle.
