Plant absorb nitrogen gas from bacteria in the soil
The source of the sugar metabolized by the seed is photosynthesis.
The procedure used by plants to transform light energy into a chemical form of energy is known as photosynthesis. The chemical energy can afterward be discharged to fuel the plants to perform their activities.
During photosynthesis, carbon dioxide and water can be combined in the existence of chlorophyll and sunlight to generate oxygen and glucose (carbohydrates). However, the prime component generated in the procedure is glucose (sugar) that is the molecule, which generates energy to mediate the activities of the cell.
Answer:
A. True
The sympathetic division of the autonomic nervous system prepares the body for stressful situations that require energy expenditure, such as by increasing heartbeat and respiratory rate to flee from a threatening situation
Explanation:
The autonomic nervous system has two kinds of nerve system, the parasympathetic nervous system and the sympathetic nervous system. The sympathetic nervous system is connected to the internal organs of an organism which is automatic and regulates and control these organs even without consciousness of the organism. Under stressful situations, the sympathetic nervous system is stimulated and prepares the organism in a fight or flight response by increasing the heart rate and increasing flow of blood to the muscles while decreasing the flow of blood to the skin. The overall result is to make the organism ready for an imminent danger.
Answer:
by mutation of genes encoding histone modification enzymes that lead to loss of gene repression by the alteration of the chromatin structure
Explanation:
Histone methylation is an important epigenetic modification involved in regulation of gene expression. Histone methyltransferases and histone demethylases are enzymes capable of modifying the chromatin structure by adding or removing methyl groups of the N-terminal of the core histones, respectively. There are suppressor of variegation (Su-var) enzymes capable of removing activating chromatin marks such as, for example, histone H3 lysine methylation, thereby mutations in these epigenetic modifiers may result in a loss of gene silencing by directly opening the chromatin structure. For example, Su(var)3–9 is a histone lysine methyltransferase enzyme that controls the formation of heterochromatin.
Can interbreed, are genetically similar, and fall under the same genus.