Five changes associated with aging include
1. There is progressive reduction in physical health due to loss of muscle tissue
2.There is occurrence of vision changes whereby it becomes impaired in older people
3. Skin becomes less elastic and age spots and wrinkles appear on the skin
4. Hearing also becomes impaired
5. length of sleep at night massively decreases.
Answer:
grow new cells in a laboratory to replace damaged organs or tissues
correct parts of organs that don’t work properly
research causes of genetic defects in cells
research how diseases occur or why certain cells develop into cancer cells
test new drugs for safety and effectiveness
Explanation:
Answer:
Potential targets:
1- DNA methyltransferases
2- Chromatin modifiers such as histone acetyltransferases, histone deacetylases, histone methyltransferases, etc.
3- Components of the RNA interference (RNAi) machinery such as Dicer, Argonaute, etc.
Explanation:
Epigenetics can be defined as the study of any heritable change in the phenotype that does not involve modifications in the DNA sequence. Epigenetic mechanisms can be classified into three major types: 1-DNA methylation, 2-histone modifications (e.g., acetylation, methylation, phosphorylation, etc), and 3-regulatory non-coding RNAs (e.g., miRNAs, lncRNAs, siRNAs, etc) that modulate target gene expression via the RNA interference pathway. There are different types of proteins that are involved in these complex epigenetic mechanisms, and those cited above represent only some examples that can be used as therapeutic targets.
The answer should be B may be wrong
"Many processes work together to keep Earth's water moving in a cycle. There are five processes at work in the hydrologic cycle: condensation, precipitation, infiltration, runoff, and evapotranspiration. These occur simultaneously and, except for precipitation, continuously."
"The water cycle is driven primarily by the energy from the sun. This solar energy drives the cycle by evaporating water from the oceans, lakes, rivers, and even the soil. Other water moves from plants to the atmosphere through the process of transpiration."
"The water cycle describes how water evaporates from the surface of the earth, rises into the atmosphere, cools and condenses into rain or snow in clouds, and falls again to the surface as precipitation. Also, the cycling of water in and out of the atmosphere is a significant aspect of the weather patterns on Earth."
