Answer:
The correct answer is "Retinal".
Explanation:
Retinal, also known as retinaldehyde, is a form of vitamin A that plays an important role in vision. It was formerly known as retinene, and it comes from its name from retina, the thin layer of tissue that its inside the eye. Retinal is an important element in vision, it allows the conversion of light into metabolic energy.
It could tell the weight of the individual that wore the footprint. It's especially useful in crime cases, because using the weight and shoe size, interpreters can accurately guess the height and gender of the individual.
Answer: B) energy released from exergonic reactions.
Explanation:
Cell metabolism is the set of reactions that occur in the cellular environment to synthesize or degrade biomolecules to produce energy. Synthesis metabolism of biomolecules is known as anabolic (anabolism) and catabolic degradation (catabolism).
Endergonic reaction (product has more energy than reagents) and requires energy to occur. Anabolism occurs when the cell has sufficient energy or substrate. Catabolism, in turn, occurs in situations in which the body needs energy, such as between meals and fasting.
The reactions of anabolism and catabolism are opposite but occur in an articulated manner, allowing the maximization of available energy. Thus, while catabolism occurs spontaneously, an exergonic reaction with ATP production, anabolism is non-spontaneous, or endergonic, requiring energy to occur. In other words energy that drives endergonic reactions is often obtained from B) energy released from exergonic reactions.
Answer: A. True
Explanation: Cell receptors are proteins that receive signals and trigger a signal cascade for the cell can respond. There's many types of receptors, depend of their location and their enzymatic activity, and each type can recognize certain signals. For example, tyrosine-kinase receptors can recognize growth factors, JAK associated receptors can recognize cytokines, etc. That specificity is given by the structure of the receptor and the structure of the signal.
Answer:
Approximately 4.6 billion years ago
Explanation:
