Biology: Solved 185 Biology Questions and answers section with explanation for various online exam preparation, various interviews, Logical Reasoning Category online test. Category Questions section with detailed description, explanation will help you to master the topic.
1. A group of archaebacteria is used in the production of
Archaebacteria sub-kingdom of the kingdom Prokaryote, which on the basis of both RNA and DNA. Archaebacteria have unique protein-like cell walls and cell membrane simple organic compounds such as methanol and acetate as food, combining them with carbon dioxide and hydrogen gas from the air and releasing methane as a byproduct.
3. Which of the following in biology is the energy currency of cells?
The process of releasing energy from food is called respiration. The energy is stored in the form of ATP (Adenosine tri phosphate) in the body cells which is used for various purposes like contraction of muscles, conduction of nerve impulses, synthesis of proteins and many other activities related to the functioning of cells. Therefore, ATP is known as the energy currency of cells.
Bacterial Neisseria meningitis is very serious and can be deadly. Death can occur in as little as a few hours. Most people recover from meningitis. However, permanent disabilities (such as brain damage, hearing loss, and learning disabilities) can result from the infection.
9. Deforestation is the major causal agent of _________.
Correct Ans:Both A, B, and C
The loss of trees and other vegetation can cause climate change, desertification, soil erosion, fewer crops, flooding, increased greenhouse gases in the atmosphere, and a host of problems for indigenous people.
Linseed is a food and fibre crop that is grown in cooler regions of the world. The oil is extracted from its seed, known as lineseed oil, which is a very good source of omega 3 fatty acid, which is able to prevent the deposition of fat in blood vessels.
The syrinx is the vocal organ of birds located at the base of a bird's trachea. It produces sounds without the vocal folds of mammals. The sound is produced by vibrations of some or all of the walls of the syrinx and the pessulus, caused by air flowing through the syrinx.
13. Which one of following hormones stimulates pancreas for the production of digestive juice?
Secretin is a hormone that stimulates pancreas for the production of digestive juice. Secretin also helps to regulate the pH of the duodenum by inhibiting the secretion of gastric acid from the parietal cells of the stomach. It also stimulates the contraction of the pancreas.
15. Acute lead poisoning is also known as ___________.
Lead poisoning or Plumbism is a condition which occurs when there is an accumulation of lead in the body by either swallowing a lead-containing substance or breathing it, such as dust, water, paint or food.
16. Which of the following is the main thinking part of the human brain?
Fore Brain. It is the main thinking part of the brain and controls the voluntary actions. The forebrain processes sensory information that is collected from the various sense organs such as ears, eyes, nose, tongue, skin.
17. The later (second) formed primary xylem elements are called _____________.
Itâ€™s the Metaxylem which is the second formed primary xylem. The primary part, formed before Metaxylem is called as Protoxylem. Compared to the latter, the former has wider vessels and tracheid. Moreover, xylem is one of the two types of transport tissue in vascular plants, which has a basic function of transporting water from roots to other parts of plant.
18. When a person becomes older, his blood pressure generally
The causes of high blood pressure are not known, but several factors and conditions may play a role in its development, including : Smoking, being overweight or obese, lack of physical activity, too much salt in the diet, too much alcohol consumption, Stress, older age, genetics, family history of high blood pressure, chronic kidney disease, adrenal and thyroid disorders.
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