Involuntary muscles are not striated. Even among the striated muscles that are voluntary, the heart which is also a muscle, is involuntary. These muscles that are not striated are very smooth to the sight which is why they are also called Smooth muscles.
On the other hand the striated muscles, which are voluntary are highly fibrous and their primary function is to move the body voluntarily, and producing heat as a result of this muscle action.
Answer:
Explanation:Often their most distinguishing feature is their reproductive organs, commonly called flowers. Sexual reproduction in flowering plants involves the production of male and female gametes, the transfer of the male gametes to the female ovules in a process called pollination.
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The existence of land bridges was used to dispute continental drift
<h3><u>Answer;</u></h3>
Tissues
In vascular plants, cells coordinate to form specialized tissues that deliver food and water to the entire plant structure.
<h3><u>Explanation</u>;</h3>
- Vascular plants are plants that contain specialized vascular tissue.
- Vascular tissues in vascular plants are specialized tissue that transports or carries water and nutrients. Vascular tissue is divided into xylem and phloem.
- Xylem is the vascular tissue that carries water upward from the roots to every part of a plant while phloem is the vascular tissue that transports solutions of nutrients carbohydrates produced by photosynthesis through out the plant
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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.
