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Biology Interview Questions & Answers - Learning Mode

Biology Interview Questions & Answers - Learning Mode

Biology is the science of life. Biologists study the structure, function, growth, origin, evolution and distribution of living organisms. There are generally considered to be at least nine ?umbrella? fields of biology, each of which consists of multiple subfields. The word biology is derived from the greek words /bios/ meaning /life/ and /logos/ meaning /study/ and is defined as the science of life and living organisms. An organism is a living entity consisting of one cell e.g. bacteria, or several cells e.g. animals, plants and fungi.

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Biology Interview Questions & Answers - Learning Mode
Try Biology Interview Questions & Answers - Exam Mode
Question: How does the odor of flower petals help pollination?

Answer: The purpose of the perfume is to attract a pollinator - insect, bat, bird or whatever. The reward for the pollinator is a meal of nectar, which is produced by the flower. Source:
Question: What is an analogy for microtubules?

Answer: Microtubules have two main functions in cells and in doing so act like a skeleton as well as like railroad tracks. Microtubules are the main structural component of the cytoskeleton in cells, which provides the cell with structure and rigidity and determines the shape of the cell. They also serve to transport vesicles and proteins within the cytoplasm through transport proteins called kinesins and dyneins, which act much like railroad cars. Source:
Question: Why the orange trees are often sprayed with water?

Answer: Although it is grossly counter-intuitive, whenever citrus groves are in danger of experiencing below-freezing temperatures, the trees are sprayed with water. This causes frost to form on the rinds of the fruit and provides an extra layer of insulation against the low temperatures that would otherwise freeze the edible portion of the fruit and destroy the crop. Source:
Question: What is the main difference between a bird heart and a mammalian heart?

Answer: The bird heart has a single aortic arch on the right side of its body while the mammalian heart has one on the left. Source:
Question: What best describes the amoebas division?

Answer: (1) It is a Mode of asexual account in which a single parent is involved. The amoeba cell, which is unicellular, divides into two daughter cells, which are identical. First, the nucleus divides, then the cytoplasm and then plasma membranes.

(2) Sporulation when the environmental conditions are unfavorable, the amoeba cell secrets a 3 forming a cyst. This is called encystations. When are favorable the cell divides by multiple fission and form small pseudopodiospores the like totally wall b Source:
Question: How does the structure of a crab relate to its habitat?

Answer: Its hard exoskeleton protects it for most predators & keeps water off its flesh. The claws are used for mating duels & protection. The reason for so many legs is for grip on and off land. Source:
Question: What are the examples of homeostasis?

Answer: Regulation of body temperature, control of blood glucose levels, the regulation of salt and water balance Source:
Question: What is the tallness trait of a pea plant moving separately from the color trait an example of?

Answer: This is an example of Mendel's second law, the Law of Independent Assortment, which states that the appearance of one trait will not affect the appearance of another. Current understanding of genetic inheritance, however, has shown that this is not always the case because two genes, which are located close to each other on the same chromosome, will most likely be inherited together. Source:
Question: Why do leaves change color?

Answer: Leaves are the food factories of plants. During the spring and summer, leaves are actively making food and they are filled with chlorophyll, which gives green color. As summer, ends and the days get shorter and cooler, food production stops and the leaves stop producing food. The chlorophyll disappears and they begin to change into the yellows, oranges, and reds that we see in autumn. Source:
Question: Why are calcium carbonate and carbon dioxide and carbon monoxide considered inorganic compounds?

Answer: "The name "organic" is a historical name, dating back to 19th century, when it was believed that organic compounds could only be synthesized in living organisms through vis vitalis - the "life-force". The theory that organic compounds were fundamentally different from those that were "inorganic", that is, not synthesized through a life-force, was disproved with the synthesis of urea, an "organic" compound by definition of its known occurrence only in the urine of living organisms, from potassium Source:
Question: What is a recessive gene?

Answer: With the birth of a child, it gets its genes from both parents. Some genes 'override' other genes. Using hair color as example:

If one parent is blond (Pb) and one parent is black hair (Pd), blond would be the recessive gene, and dark would be the dominant gene. Meaning:

Pb x Pb = Blond Pd x Pd = Dark Pb x Pd = Dark Pd x Pb = Dark

Recessive genes occur in the genotype (inside the body, disease, disorder) or fenotype (appearance, blue eyes brown eyes). In all other ca Source:
Question: What are some examples of chemical and physical changes?

Answer: Chemical changes are irreversible changes such as combustion and frying an egg.

Physical changes are reversible changes such as ice melting and deflating a ball. Source:
Question: What is the movement of paramiciumcillia?

Answer: Paramecium: This large single-celled protist contains many, many short little "hair-like" structures called cillia that cover the entire cell. The cillia move like little oars that help the paramecium swim and gather food into its "food grove". The paramecium appears a light pink in color. It is known as a Ciliate. Source:
Question: How is a genetic trait determined by the genetic code within a DNA molecule?

Answer: A DNA molecule has 4 different bases, either CGTA. Any specific combination of these things forms a different protein (a triplet of 3 base pairs codes for an amino acid and a chain of amino acids is a protein) which is expressed. This protein allows a genetic trait to be expressed. An example could be a protein that adds color to your hair. Source:
Question: Why do preserved foods not spoil?

Answer: Plant and animal cells must stay in an isotonic, or neutral, solution to survive. When salt or sugar is added, many of the cells wither and die, and the bacteria cannot live on dead cells.

Sometimes they have agents added that do not allow bacteria and other microbes to colonize and grow on the food. Microbes like bacteria and fungus break down the food causing the spoilage.

There are bacteria and other microorganisms, which live in all sorts of environments. Some tolerate oxygen a Source:
Question: What is monera?

Answer: One of the 5 main kingdoms includes bacteria and blue/green algae. Does NOT have a cell membrane, or in other words, is made of prokaryotic cells.

Actually, Monera encompasses eubacteria and archbacteria. In addition, prokaryotes DO have a cell membrane. What they do not have is a membrane bound nucleus. Source:
Question: What is the difference between an acid and a base?

Answer: Base is any thing, which has a capability to abstract a proton.

Using the simplest definition, an acid is something when added to water releases hydrogen ions (H+), also called protons. A base, or an alkali, is something that when added to water releases hydroxide (OH-) ions.

The strength of a basic (or alkaline) or acidic solution is measured using the pH scale. A pH of 7 is perfectly pure neutral water (neither acidic nor basic), and pH below 7 is acidic, and a pH above 7 is basi Source:
Question: What is the movement of paramiciumcillia?

Answer: Paramecium: This large single-celled protist contains many, many short little "hair-like" structures called cillia that cover the entire cell. The cillia move like little oars that help the paramecium swim and gather food into its "food grove". The paramecium appears a light pink in color. It is known as a Ciliate. Source:
Question: Why do organisms live in certain places?

Answer: Think of that, the temperature difference in the desert is huge. So in order to survive, the cactus plant reduces heat gain and heat loss as well as water loss. (E.g. narrow pin shaped leaves, long extensive roots) Source:
Question: What are the names and uses of the various laboratory tools?

Answer: Tools include beakers, microscopes, tweezers, hot plates, lasers, voltmeters, test tubes, Erlenmeyer flasks, thermometers, test tube racks, Bunsen burners, crucibles, tripods and more. They are used to measure, observe and gather data for experiments, as well as to perform reactions and to heat things. More advanced laboratory equipment includes items such as spectrometers, centrifuges and chromatographs.

Safety Tools

1. Eye Wash: In case materials get into your eyes, use this to r Source:

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Latest 20 Questions
Payment of time- barred debt is: (a) Valid (b) Void (c) Illegal (d) Voidable
Consideration is defined in the Indian Contract Act,1872 in: (a) Section 2(f) (b) Section 2(e) (c) Section 2(g) (d) Section 2(d)
Which of the following is not an exception to the rule, "No consideration, No contract": (a) Natural love and affection (b) Compensation for involuntary services (c) Completed gift (d) Agency
Consideration must move at the desire of: (a) The promisor (b) The promisee (c) The promisor or any other party (d) Both the promisor and the promisee
An offer which is open for acceptance over a period of time is: (a) Cross Offer (b) Counter Offer (c) Standing Offer (d) Implied Offer
Specific offer can be communicated to__________ (a) All the parties of contract (b) General public in universe (c) Specific person (d) None of the above
_________ amounts to rejection of the original offer. (a) Cross offer (b) Special offer (c) Standing offer (d) Counter offer
A advertises to sell his old car by advertising in a newspaper. This offer is caleed: (a) General Offer (b) Special Offer (c) Continuing Offer (d) None of the above
In case a counter offer is made, the original offer stands: (a) Rejected (b) Accepted automatically (c) Accepted subject to certain modifications and variations (d) None of the above
In case of unenforceable contract having some technical defect, parties (a) Can sue upon it (b) Cannot sue upon it (c) Should consider it to be illegal (d) None of the above
If entire specified goods is perished before entering into contract of sale, the contract is (a) Valid (b) Void (c) Voidable (d) Cancelled
______________ contracts are also caled contracts with executed consideration. (a) Unilateral (b) Completed (c) Bilateral (d) Executory
A offers B to supply books @ Rs 100 each but B accepts the same with condition of 10% discount. This is a case of (a) Counter Offer (b) Cross Offer (c) Specific Offer (d) General Offer
_____________ is a game of chance. (a) Conditional Contract (b) Contingent Contract (c) Wagering Contract (d) Quasi Contract
There is no binding contract in case of _______ as one's offer cannot be constructed as acceptance (a) Cross Offer (b) Standing Offer (c) Counter Offer (d) Special Offer
An offer is made with an intention to have negotiation from other party. This type of offer is: (a) Invitation to offer (b) Valid offer (c) Voidable (d) None of the above
When an offer is made to the world at large, it is ____________ offer. (a) Counter (b) Special (c) General (d) None of the above
Implied contract even if not in writing or express words is perfectly _______________ if all the conditions are satisfied:- (a) Void (b) Voidable (c) Valid (d) Illegal
A specific offer can be accepted by ___________. (a) Any person (b) Any friend to offeror (c) The person to whom it is made (d) Any friend of offeree
An agreement toput a fire on a person's car is a ______: (a) Legal (b) Voidable (c) Valid (d) Illegal
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