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Life Processes Test - 62

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Life Processes Test - 62
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  • Question 1
    1 / -0
    When the right ventricle of heart contracts, the blood goes to:
    Solution
    Blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the heart's right atrium. As the atrium contracts, blood flows from your right atrium into your right ventricle through the open tricuspid valve. When the ventricle is full, the tricuspid valve shuts. This prevents blood from flowing backward into the atria while the ventricle contracts. As the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery, and to the lungs where it is oxygenated. 
    So, the correct answer is option D.
  • Question 2
    1 / -0
    Fat is digested in the
    Solution
    Bile is alkaline in nature produced by liver, stores and secretes by the gallbladder. When the chyme enters into the first part of small intestine i.e., duodenum, bile and pancreatic juice mixed with chyme. Bile salt combines with phospholipids in chyme and emulsified the hydrophobic end with lipid and hydrophilic end with water, and break down the insoluble lipid globule into the simple form by enzymatic activity. Thus, the correct answer ios option D.
  • Question 3
    1 / -0
    Heterotrophs may be
    Solution
    Any organism that cannot produce their own food is called as heterotrophs. They obtain its food and energy from plant or another animal. All animals, protozoans, fungi, and most bacteria are heterotrophs. Holozoic modes of nutrition is a method of heterotrophic nutrition that involves the ingestion of liquid or solid organic material, digestion, absorption and assimilation of it to utilize it. For example, Amoeba. Saprophytes are the animals which feed on dead and decaying animals. For example, moulds, mushroom etc. Parasitic mode of nutrition is that in which organism feeds on a living organism (host). For example, leach, flatworm, plain worms etc. 
    Therefore, the correct answer is option D.
  • Question 4
    1 / -0
    Systole causes
    Solution
    Systole is the period of contraction of the ventricles of the heart that occurs between the first and second heart sounds of the cardiac cycle (the sequence of events in a single heart beat). Systole causes the ejection of blood into the aorta and pulmonary trunk.
    So, the correct answer is option D.
  • Question 5
    1 / -0
    Dialysis is meant for which of the following organ?
    Solution
    Kidney dialysis is a life-support treatment that uses a special machine to filter harmful wastes, salt, and excess fluid from your blood. This restores the blood to a normal, healthy balance. Dialysis replaces many of the kidney's important functions. There are different types of kidney dialysis, including hemodialysis- blood is filtered using a dialyzer and dialysis machine and peritoneal dialysis- blood is filtered inside the body after the abdomen is filled with a special cleaning solution.
    Therefore, the correct answer is option A.
  • Question 6
    1 / -0
    Breathing is affected by
    Solution
    Breathing involves expansion and contraction off lungs to adjust the partial pressure of relative gases for exchange. The process of inhalation occurs due to an increase in the lung volume (diaphragm contraction and chest wall expansion) which results in a decrease in lung pressure in comparison to the atmosphere. Thus, air rushes in the airway. The process of exhalation occurs due to an elastic recoil of the lung tissue which causes a decrease in volume, resulting in increased pressure in comparison to the atmosphere. Thus, air rushes out of the airway. 
    Therefore, the correct answer is option C.
  • Question 7
    1 / -0
    Respiration is the mechanism for
    Solution
    In physiology, respiration is defined as the transport of oxygen from the outside air to the cells within tissues and the transport of carbon dioxide in the opposite direction also called as breathing.
    Biochemical definition of respiration - the metabolic process by which an organism obtains energy by reacting oxygen with glucose to give water, carbon dioxide and 38 ATP (energy).
    Therefore, the correct answer is option C.

  • Question 8
    1 / -0
    .......... is not a part of excretory system in human being.
    Solution
    The uterus or womb is a major female hormone-responsive reproductive sex organ of most mammals, including humans. 
    Ureter, urethra, and urinary bladder are parts of the human excretory system.
    So, the correct answer is option C.
  • Question 9
    1 / -0
    Normal blood pressure of human being must be
    Solution
    • Blood pressure is the pressure applied to the wall of the arteries.
    • The systolic phase applies greater pressure than the diastolic phase. 
    • The normal blood pressure of a human being must be 120/80mmHg.
    So, the correct answer is option C.
  • Question 10
    1 / -0
    Which of the following processes keeps the plant cool?
    Solution
    Evaporative loss of excess water by evaporation in the form of water vapour is known as transpiration. It has two main functions: cooling the plant and pumping water and minerals to the leaves for photosynthesis. Photosynthesis, respiration and translocation can not keep the plant cool. Therefore, the correct answer is option B.
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