13
Q:

How many hours does it take for a housefly's egg to hatch? 

Answer:



Q:

What is the best way to prevent pest infestation?

Answer

Pest infestation is nothing but the presence of large number of pests at a place, typically so as to cause damage or disease.


 


Climatic conditions affect a considerable number of pests. Some are more active during warmer periods than others. As these summer insects invade your home, they're likely in search of food, water, shelter, or have encountered an entrance. To pest-proof your home this summer, it's best to remove their 'WHY’ or reason for entering your home.


* Keep your place clean and dry. Make sure there is no food laying about.


* Removing food residue - food is a common attraction to a number of different pests.


* Regular disinfection of the surfaces.

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0 21
Q:

Human gametes are produced by

A) Mitosis B) Meiosis
C) Replication D) None of the above
 
Answer & Explanation Answer: B) Meiosis

Explanation:

In humans all reproduction is sexual. It involves joining together haploid gamete cells from each parent with half the normal number of chromosomes to make a new cell containing both parents' genetic material. This is a diploid zygote. The cells from each parent that combine to form the zygote are called gametes.

 

Meiosis produces haploid gametes from a diploid parental cell.

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0 16
Q:

A protein that acts as a hormone is

A) Estrogen B) Insulin
C) Both A & B D) None of the above
 
Answer & Explanation Answer: B) Insulin

Explanation:

A protein that acts as a hormone is INSULIN.

a_protein_that_acts_as_a_hormone_is1534420157.jpg image

Insulin is a peptide hormone produced by beta cells of the pancreatic islets; it is considered to be the main anabolic hormone of the body.  Insulin helps keeps your blood sugar level from getting too high or too low.  

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0 31
Q:

Select the four statements about Plasmodium that are true.

 

A)  Inside an infected mosquito, haploid gametes fuse, forming a diploid zygote that develops into an oocyst

B) Plasmodium cells infect two specific types of cells in humans.

C) Inside an infected mosquito, haploid gametes fuse, forming a haploid zygote that develops into an oocyst.

D) When a mosquito bites a human with malaria, diploid Plasmodium cells enter the mosquito.

E) Plasmodium cells are transferred to humans through mosquito saliva.

F) The life cycle of Plasmodium involves only haploid forms.

G) The complete life cycle of Plasmodium requires two hosts.

A) A, B, E, G B) A, C, F, G
C) B, C, D, F D) None of the above
 
Answer & Explanation Answer: A) A, B, E, G

Explanation:

Plasmodium is a genus of unicellular eukaryotes that are obligate parasites of vertebrates and insects. 

From the above given options, A, B, E, G are TRUE regarding Plasmodium.

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0 30
Q:

Cognitive neuroscientists can examine the brain with

A) PET & MRI B) Gama images & electrolysis
C) electrolysis & PET D) MRI & electrolysis
 
Answer & Explanation Answer: A) PET & MRI

Explanation:
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0 35
Q:

caffeine is also a what?

A) Psychoactive B) Barbiturate
C) Narcotic D) Opioid
 
Answer & Explanation Answer: A) Psychoactive

Explanation:

Caffeine is also a psychoactive drug which alters the mood and conscious in our behaviour. It is widely consumed as a psychoactive drug.

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1 61
Q:

Exercise improves memory and learning.

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

Explanation:

Exercise can boost your memory and thinking skills by improvising alertness, attention and motivation.

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0 44
Q:

What is the role of NADP+ in photosynthesis?

Answer

NADP - Nicotinamide Adenine Dinucleotide Phosphate is one of the carrier molecules that transfers high-energy electrons from chlorophyll to other molecules.


NADP+ is the molecule that accepts the electrons given by water. Its reduction by the protein FNR (Ferredoxin NADP+ reductase) gives NADPH,H+.


 


NADPH,H+ can be used in the Calvin Cycle to reduce 1,3-Biphosphoglycerate (1,3-BPG) into Glyceraldehyde-3-phosphate (G3P), a monosaccharide. It becomes NADP+ again and the cycle keeps repeating as long as the chloroplast receives sufficient and appropriate light.

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