Testosterone is an example of a steroid. Its physiological functions include:
1. Determines the the gender of a developing embryo.
2. Development of reproductive organs and the prostrate gland in males.
3. Responsible for secondary sexual characteristics in males such as deeper pitch, increased muscle bulk, hair on the upper lip.
4. Regulates normal sperm development.
Another steroid is cholesterol. Physiological functions include:
1. Helps maintain the structure of cells and vessels improving overall health and function in the body.
2. Precursor to important sex hormones such as testosterone and estrogen.
3. Used as an insulator around nerves and is absolutely essential for brain function.
4. Precursor to Vitamin D, which supports a healthy immune and nervous system
Answer:
Transport vesicles, containing partially processed proteins, fuse with the folds of the <u>Golgi apparatus (cisternae)</u> on the cis face and bud from the cisternae on the more distal side (trans face).
Explanation:
Some of the matrix proteins form long, filamentous tethers that are thought to help retain Golgi transport vesicles close to the organelle. When the cell prepares to divide, mitotic protein kinases phosphorylate the Golgi matrix proteins, causing the Golgi apparatus to fragment and disperse throughout the cytosol.
<span>When an overwhelming body of observations and measurements supports a scientific hypothesis or group of related hypotheses, it becomes a scientific theory. A scientific theory is defined as an explanation of an facet of the natural world that one can test repeatedly using defined protocols of observation and experimentation.</span>
Answer:
A energia térmica não pode ser criada nem destruída, apenas convertida em outras formas de energia.
Explicação:
Os princípios da termodinâmica nos levam a concluir que a energia térmica não pode ser criada nem destruída apenas convertida em outras formas de energia. Essa energia térmica pode ser convertida em energia mecânica, elétrica e outras formas de energia. A energia térmica também é liberada quando o alimento ingerido pelos herbívoros, apenas 10% da energia é transferida de um nível trófico para outro, enquanto 90% da energia é liberada para a atmosfera.
Answer;
DNA or protein sequences of shared genes
The MOST accurate way to determine the evolutionary relationship between two animals is through the examination of DNA or protein sequences of shared genes.
Explanation;
DNA or protein sequences of shared genes. Biochemical evidence is extremely accurate in determining the relationship between two organisms. Many animals have been re-classified, due to DNA evidence.
