31
Q:

When a gas is turned into a liquid, the process is called

A) condensation B) evaporation
C) deposition D) sublimation

Answer:   A) condensation



Explanation:
Subject: General Science
Q:

A calorie is another term for carbohydrate.

A) TRUE B) FALSE
Answer & Explanation Answer: B) FALSE

Explanation:

The given statement that a calorie is another term for carbohydrate is False.


 


Carbohydrates are one of the main types of nutrients, and are most important source of energy.


 


Where as Calorie is a measurement of how much heat energy is generated by the body processing food.


 


Your digestive system changes carbohydrates into glucose(blood sugar). Your body uses this sugar for energy. 


 

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Subject: General Science
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2 12
Q:

Genetic alteration probably refers to altering what

A) Genes found on ribosomes B) Genes found on chromosomes
C) Genes found on cytoplasm D) All of the above
 
Answer & Explanation Answer: B) Genes found on chromosomes

Explanation:

Genetic alteration probably refers to altering Genes found on chromosomes.

Genes_on_chromosomes1531904619.jpg image

 

Genetic alteration refers to altering DNA sequence. Gene alteration forms genetically modified products that modifies the gene sequence.

 

Genetic engineering, also called genetic modification or genetic manipulation, is the direct manipulation of an organism's genes using biotechnology.

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0 45
Q:

Vision can be affected by drugs and alcohol making, especially difficult to distinguish

A) Light B) Colors
C) Distance D) Shapes
 
Answer & Explanation Answer: B) Colors

Explanation:

Drinking alcohol can cause many damages to your body. Your vision can be affected as you will face blurred and double vision and even you can't identify colors.

alcohol_drinking_effects1531827596.jpg image

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2 53
Q:

The closest algal relatives of land plants are

A) charophytes B) chrysophytes
C) rhodophytes D) bacillariophytes
 
Answer & Explanation Answer: A) charophytes

Explanation:

The charophytes are the extant group of green algae that are most closely related to modern land plants.

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1 47
Q:

How do cancer cells differ from normal cells?

Answer

There are many differences between cancer cells and normal cells. Some of the differences are well known, whereas others have only been recently discovered and are less well understood.


cancer_cells_vs_normal_cells1531806964.jpg image


Cancer Cells vs. Normal Cells ::



Below are some of the major differences between normal cells and cancer cells, which in turn account for how malignant tumors grow and respond differently to their surroundings than benign tumors.



Growth :—


Normal cells stop growing (reproducing) when enough cells are present. For example, if cells are being produced to repair a cut in the skin, new cells are no longer produced when there are enough cells present to fill the hole; when the repair work is done. In contrast, cancer cells don’t stop growing when there are enough cells present. This continued growth often results in a tumor (a cluster of cancer cells) being formed. 



Communication :—


Cancer cells don’t interact with other cells as normal cells do. Normal cells respond to signals sent from other nearby cells that say, essentially, “you’ve reached your boundary.” When normal cells “hear” these signals they stop growing. Cancer cells do not respond to these signals.



Stickiness :—


Normal cells secrete substances that make them stick together in a group. Cancer cells fail to make these substances, and can “float away” to locations nearby, or through the bloodstream or system of lymph channels to distant regions in the body.


 


Ability to Metastasize (Spread) :—


Normal cells stay in the area of the body where they belong. For example, lung cells remain in the lungs. Cancer cells, because they lack the adhesion molecules that cause stickiness, are able to travel via the bloodstream and lymphatic system to other regions of the body—they have the ability to metastasize. 


 


Appearance :—


Under a microscope, normal cells and cancer cells may look quite different. In contrast to normal cells, cancer cells often exhibit much more variability in cell size—some are larger than normal and some are smaller than normal. In addition, cancer cells often have an abnormal shape, both of the cell, and of the nucleus (the “brain” of the cell.) 



The rate of growth :—


Normal cells reproduce themselves and then stop when enough cells are present. Cancer cells reproduce rapidly before the cells have had a chance to mature.


 


Maturation :—


Normal cells mature. Cancer cells, because they grow rapidly and divide before cells are fully mature, remain immature. Doctors use the term undifferentiated to describe immature cells (in contrast to differentiated to describe more mature cells.) 


 


Evading the immune system  :—


When normal cells become damaged, the immune system (via cells called lymphocytes) identifies and removes them. Cancer cells are able to evade (trick) the immune system long enough to grow into a tumor by either by escaping detection or by secreting chemicals that inactivate immune cells that come to the scene.


 


Functioning :—


Normal cells perform the function they are meant to perform, whereas cancer cells may not be functional. For example, normal white blood cells help fight off infections. In leukemia, the number of white blood cells may be very high, but since the cancerous white blood cells are not functioning as they should, people can be more at risk for infection even with an elevated white blood cell count.

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1 59
Q:

Blood group compatibility for marriage?

Answer

Matching blood group before marriage is important. This is to prevent Rh incompatibility. Rh incompatibility can lead to erythroblastosis fetalis (Hemolytic disease of the newborn-HDN). Fetal RBC gets destroyed & newborn may get severe anaemia, jaundice. This jaundice is more severe than Physiological jaundice ( which is the most common and will usually resolve on its own).


 


In very severe form, a fetus may die due to heart failure. This is mediated by the antigen-antibodies reaction. Transfer of maternal antibodies across the placenta occurs. This happens when Rh +ve man marries Rh-ve lady.


  


So Rh +ve man should try to avoid marrying Rh-ve lady.


 


Matching blood groups for marriage ::


Boy : A = Girl : A & AB 


Boy : B = Girl : B & AB 


Boy : O = Girl : O, A, B & AB 


Boy : AB = Girl : AB 


Boy : Rh+ve = Girl : Rh+ve 


Boy : Rh-ve = Girl : Rh+ve & Rh-ve.


  


Blood groups that do not match for marriage ::


Boy : A = Girl : O & B 


Boy : B = Girl : O & A 


Boy : AB = Girl : O, A & B 


Boy : Rh+ve = Girl : Rh-ve.

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0 68
Q:

Which of these is a starting point for primary succession?

A) a surface exposed by a retreating glacier B) a neglected yard
C) abandoned farmland D) an abandoned city
 
Answer & Explanation Answer: A) a surface exposed by a retreating glacier

Explanation:

Primary succession is the orderly and predictable series of events through which a stable ecosystem forms in a previously uninhabited region. Primary succession occurs in regions characterized by the absence of soil and living organisms.

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1 134
Q:

What is the primary form of fat in the diet?

A) Lipids B) Fattyacids
C) Triglycerides D) All of the above
 
Answer & Explanation Answer: C) Triglycerides

Explanation:

Triglycerides are the primary form of dietary fat found in the body, and may contain a combination of three fatty acids:

saturated fatty acids (SFAs),

polyunsaturated fatty acids (PUFAs), or

monounsaturated fatty acids (MUFAs).

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0 79