EV HSC Biology II 8th Chapter MCQ Question Answer
EV HSC Biology II 8th Chapter MCQ Question Answer. Human Coordination and Control. The nervous system enables humans to react to their surroundings and to coordinate their behavior. It comprises millions of neurons and uses electrical impulses to communicate very quickly. Do you breathe each and every moment? Of course, you do! But are you consciously aware of it? So how does your body know to keep breathing? Why do you instantly pull your hand away, without thinking, when you touch a hot object? It’s because animals have organs that are responsible for control and coordination of their actions. Let us take a detailed look at control and coordination in plants and animals.
Visual attention may be voluntarily directed to particular locations or features (voluntary control), or it may be captured by salient stimuli, such as the abrupt appearance of a new perceptual object (stimulus-driven control). Most often, however, the deployment of attention is the result of a dynamic interplay between voluntary attentional control settings (e.g., based on prior knowledge about a target’s location or color) and the degree to which stimuli in the visual scene match these voluntary control settings. Consequently, nontarget items in the scene that share a defining feature with the target of visual search can capture attention, a phenomenon termed contingent attentional capture.
EV HSC Biology II 8th Chapter MCQ Question Answer. Human Coordination and Control
EV HSC Biology 2nd Paper MCQ Question With Answer
Biology is the natural science that studies life and living organisms, including their physical structure, chemical processes, molecular interactions, physiological mechanisms, development, and evolution. Botany, also called plant science(s), plant biology or phytology, is the science of plant life and a branch of biology.
The fields within biology are further divided based on the scale at which organisms are studied and the methods used to study them: biochemistry examines the fundamental chemistry of life; molecular biology studies the complex interactions of systems of biological molecules; cellular biology examines the basic building block of all life, the cell; physiology examines the physical and chemical functions of the tissues and organ systems of an organism, and ecology examines how various organisms interrelate.
A botanist, plant scientist or phytologist is a scientist who specializes in this field. Zoology is the scientific study of animals. This discipline can include animal anatomy, physiology, biochemistry, genetics, evolution, ecology, behavior, and conservation.
The proper function of human bodies is dependent on smaller structures, or organs, such as the heart or lungs. The tiny cells that make up these organs actually contain within them smaller structures called organelles. These organelles help the cells to perform their jobs. In cancer, changes to these organelles can cause the individual cells and ultimately the entire organism to have serious problems. To get a better understanding of how cells work, we will now spend some time examining some of these subcellular structures.
The organelles that we will discuss are involved in the information flow within cells and in energy production. In addition, we will look at a structure that gives cells their shape and allows them to reproduce themselves. All of the organelles and processes to be discussed have direct relevance to cancer because these are the cellular structures/activities that become disturbed in the disease.
The image below shows two living mouse cells. The mitochondria are colored red and the nuclei (with brightly stained chromosomes) are colored blue. The green colored region near the nuclei of the cells represents the Golgi apparatus, an organelle involved in the processing and packaging of molecules within the cell.
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