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23351.

What are the functions of (i) methylated guanasine cap, (ii) poly-A “tail” in a mature on RNA?

Answer»

Methylated Guanine cap helps in binding of mRNA to smaller ribosomal sub-unit during initiation of translation. 

Poly– A tail provides longevity tomRNA’s life. Tail length and longevity of mRNA are positively correlated.

23352.

Define Axoneme

Answer»

Axoneme is defined as the central strand of a cilium or flagellum. It is composed of an array of microtubules, typically in nine pairs around two single central ones.

23353.

Complete the following words using ai, ea, ee, ia, ie, iu, oa, oo, ou, ua, ue, ui. 1. On the busy Bowbazaar (a) Str _ _ t in Calcutta there was an old (b) b _ _ lding. 2. A (a) y _ _ ng man named K.S. Krishnan.(b) ann _ _ nced, “Professor Compton, has won the Nobel Prize.” 3. “If this Compton Effect is (a) tr _ _ of X-rays, it must be true of light (b) t _ _ .” 4. Could light also change its nature when passed (a) thr _ _ gh a transparent (b) med _ _ m? 5. No sophisticated (a) eq _ _ pment was (b) av _ _ lable in his laboratory. 6. (a) F _ _ r months later, on March 16, 1928, Raman announced his discovery of ‘new (b) rad _ _ tion’. 7. For (a) sc _ _ ntific (b) res _ _ rch in this country, it was a red-letter day. 8. His parents were keen to send him (a) abr _ _ d for higher (b) stud _ _ s. 9. In his (a) y _ _ th, Raman was mainly interested in (b) ac _ _ sties. 10. He studied how stringed instruments like the violin (a) c _ _ ld produce” (b) harmoni _ _ s music.

Answer»

1. a) Street b) building 

2. a) young b)announced 

3. a) true b) too

4. a) through b) medium 

5. a) equipment b) available 

6. a) Four b) radiation 

7. a) scientific b) research 

8. a) abroad b) studies 

9. a) youth b) acoustics 

10. a) could b) harmonious

23354.

Match the column A, B & C Appropriately    A  B    C(a) Mitochondria CisternaeCellular secretion(b) Golgi complexPolysomePhotosynthesis(c) ChloroplastCristaeProtein synthesis(d) RibosomeGranaRespiration

Answer»
    A  B    C
(a) MitochondriaCristaeRespiration
(b) Golgi complexCisternaeCellular secretion
(c) ChloroplastGranaPhotosynthesis
(d) RibosomePolysomeProtein synthesis
23355.

While looking through the microscope Ramesh saw few organisms. Help him to distinguish these organisms into Prokaryotes and Eukaryotes.

Answer»
  • Prokaryotic organisms are single celled but without definite nucleus. 
  • Eukaryotic organisms are many celled with definite nucleus.
23356.

While studying the stages of meiosis following features observed at one stage. 1. Pairing of homologous chromosomes.2. Formation of synaptonemal complex. Identify the stage.

Answer»

1. Zygotene 

2. Pachytene

23357.

Phospholipid bilayer with peripheral and integral proteins are arranged and forms quasi fluid nature is found in almost all organisms.1. Which is the best method explains the above statement? 2. Give its function.

Answer»

1. Fluid mosaic concept 

2. Transport of molecules

23358.

Briefly give the contributions of the following scientists in formulating the cell theory. 1. Robert Virchow 2. Schielden and Schwann

Answer»

1. Omnis cellula-e-cellular means new cells arise from pre-existing cells. It is the contribution of Rudolf Virchow. 

2. They have independently formulated the concept of cell theory i.e all cells are composed of cells and their products.

Schielden and Schwann-botanist and zoologist respectively.

23359.

An organelle is called “The powerhouse of the cell” 1. Name the organelle. 2. Why is it said so?

Answer»

1. Mitochondria 

2. Here the Energy (ATP) production, storage, and distribution takes place. So it is called a powerhouse of the cell.

23360.

Since the functions of certain membranous organelles are coordinated they are considered together as endomembrane system. Name the organelles included in this group.

Answer»

Endoplasmic reticulum, Golgi apparatus, Lysosome, and vacuole.

23361.

A diagram of typical cell cycle of a higher plant is shown here. Identify each stage of the cycle and explain what happens during these stages.

Answer»
  • G1 pre mitotic gap -synthesis of RNA &Proteins
  • S – phase of synthesis – DNA replication 
  • G2 Post mitotic Gap phase synthesis of RNA &Proteins continues 
  • M – Mitotic phase 
  • G0 Inactive phase
23362.

Identify the stages of Mitosis in which the following events take place: 1. Synapsis 2. Terminalisation of chiasmata.

Answer»

1. Zygotene 

2. Diakinesis

23363.

Cytokinesis differs in plant and animal cell. Substantiate this statement.

Answer»

Plant cell – formation of cell plate. 

Animal cell – Invagination of cell membrane.

23364.

A word processor would be used best to_________A. paint a pictureB. draw a diagramC. type a storyD. work out income and expenses

Answer» Correct Answer - C
23365.

The cell wall of Bacterium is made up of (a) Cellulose (b) Hemi cellulose (c) Lignin (d) Peptidoglycan

Answer»

(d) Peptidoglycan

23366.

Observe the relationship between the first two terms and fill up the blanks. 1. Mitochondria: Cristae Chloroplast: ………. 2. Moss: Capsule Fern: ……

Answer»

1. Grana 

2. Sporangium

23367.

Name the protein associated with chromosomes.

Answer»

Histones the protein associated with chromosomes.

23368.

Mitochondria are the centres of production, storage, and distribution of energy for various metabolic activities of cell.Types of Organism ......  ........ Nuclear envelope Absent PresentDNA ...(b) ....Combined with proteinsNucleolus ...(d) ....PresentMitochondria ...(e) .... ...(f) ....Ribosomes Present ...(g) ....

Answer»
Types of Organism Prokaryote Eukaryote
Nuclear envelope Absent Present
DNA PresentCombined with proteins
Nucleolus AbsentPresent
Mitochondria Absent Present
Ribosomes Present Present
23369.

Expand ESRD.

Answer»

End Stage Renal Disease.

23370.

Can you name the response shown by tendrils in the below figure ?

Answer»

Thigmotropism.

23371.

Choose the appropriate answers for the following questions.I am not going to be a doctor. A) Neither do I B) Neither did I C) Neither am I D) So am I E) Neither will I

Answer»

Correct option is C) Neither am I

23372.

Choose the appropriate answers for the following questions.Tom: My parents want to speak to you. A) So is she. B) So do my parents. C) So they do. D) My parents do.E) Neither they do

Answer»

Correct option is B) So do my parents

23373.

He has just said, “I want to speak to you”. He has just said ___ . A) he wants to speak to me B) he wanted to speak to me C) I want to speak to her D) he had wanted to speak to me E) he will want to speak to me

Answer»

Correct option is B) he wanted to speak to me

23374.

I look _____ him as a friend. A) about B) at C) over D) on

Answer»

Correct option is D) on

23375.

Explain gravitational force

Answer»

The gravitational force is a force that attracts any two objects with mass. We call the gravitational force attractive because it always tries to pull masses together, it never pushes them apart. In fact, every object, including you, is pulling on every other object in the entire universe.

23376.

The canteen provides the workers _____ meals. A) for B) in C) on D) with

Answer»

Correct option is D) with

23377.

“_____ dictionary is this?” “It’s _____.” A) Whose / him B) Who’s / his C) Whose / his D) Who’s / him

Answer»

Correct option is C) Whose / his

23378.

A man in prison longs _____ freedom. A) at B) for C) on D) about

Answer»

Correct option is B) for

23379.

Mike’s completely cured _____ smoking now. A) from B) of C) with D) without

Answer»

Correct option is B) of

23380.

My mother told me ___ . A) did not go there. B) that I can go there. C) not to go there. D) not going there. E) let not go there.

Answer»

Correct option is C) not to go there.

23381.

Look _____ this word in the dictionary. A) at B) for C) up D) into

Answer»

Correct option is C) up

23382.

How To Write a Proverb Expansion or Expansion of an idea?

Answer»

The expansion of an idea or expansion of a proverb is simple and straightforward. It involves 5 easy steps.

They are:

Step 1: Understand the symbol of the words in the proverb.

Step 2: Substitute the meaning in the idea or the proverb.

Step 3: Look for a story or anecdote or example or illustration.

Step 4: Look for similar proverbs or ideas.

Step 5: Sum up the paragraph.

23383.

_____ the first sign of illness, see your doctor. A) With B) On C) In D) At

Answer»

Correct option is D) At

23384.

She had been looking forward _____ leaving the hospital wards for a holiday in Turkey. A) to B) at C) on D) over

Answer»

Correct option is A) to

23385.

Mother told me “Don’t stay out long’’. Mother told me ___ . A) did not stay out long B) not to stay out long C) that I mustn’t stay out long D) I shouldn’t stay out long E) stay out long

Answer»

Correct option is B) not to stay out long

23386.

The meal _____ you cooked was delicious. A) which B) whose C) who D) where

Answer»

Correct option is A) which

23387.

Spot the errors in the following sentences and correct them:1. Gopi is one of the tallest boy.2. He did not listen to his father’s advices .3. He is a M.Sc student.4. He made an universal appeal to all.5. He wears a HMT watch presented by his uncle.

Answer»

1. Gopi is one of the tallest boys .

2. He did not listen to his father’s advice.

3. He is an M.Sc student.

4. He made a universal appeal to all.

5. He wears an HMT watch presented by his uncle.

23388.

Rewrite using reported speech1. The mother told her son, “Don’t pluck the leaves from the decorative plants”.2. Minister said to the security officer, “Send away the contractor from here right now.”3. Trevor said, “Is he an amazing model”?4. Ramesh said to his mother, “How can I study if you are quarrelling with dad all the time?”5. Prabu said to Soundar, “Can you please lend me your Math note book for copying?” 

Answer»

1. The mother advised her son not to pluck the leaves from the decorative.

2. Minister ordered the security officer to send away the contractor from there right then.

3. Trevor asked whether he was an amazing model.

4. Ramesh asked his mother how he could study if she was quarrelling with dad all the time

5. Prabu requested Soundar if he could lend his Math note book for copying.

23389.

Spot the errors in the following sentences and correct them:1. I regard Ram my friend2. It is her who came to see us.3. The mobile phone neither went dead or worked properly .4. One must finish his work in time.5. He absented from the class.6. Whom do you think won the prize?7. What book do you read?8. When learning how to dance, technique is of utmost importance.9. Unless you do not work hard, you will not excel in the examination.10. She is seventy but her hairs are not grey.

Answer»

1. I regard Ram as my friend.

2. It is she who came to see us

3. The mobile phone neither went dead nor worked properly.

4. One must finish one’s work in time.

5. He absented himself from the class.

6. Who do you think won the prize?

7. Which book do you read?

8. While learning how to dance, technique is of utmost importance.

9. Unless you work hard, you will not excel in the examination.

10. She is seventy but her hairs is not grey.

23390.

Observe the diagram1. Name the above connective tissue. Where they found in our body? 2. Name any two principle cell found in it.

Answer»

1. Areolar connective tissue, present beneath the skin. 

2. Fibroblast and macrophage

23391.

Write the scientific name of the source organism for citric acid.

Answer»

Aspergillus niger.

23392.

Adaptive radiation is Australian marsupials are example of(a) Divergent evolution(b) Convergent evolution(c) Saltation(d) None of these

Answer»

Answer (a) Divergent evolution

23393.

Apart from those three very cold weeks in January, it has been a very ________ winter. A) plain B) soft C) pale D) mild E) calm

Answer»

Correct option is D) mild

23394.

Copy the diagram and label the numbered parts.

Answer»

1. Pharynx 

2. Gizzard 

3. Intestinal caecum 

4. Typhlosole

23395.

Give an example for an inter-specific hybrid animal.

Answer»

Example for an inter-specific hybrid animal: Mule.

23396.

Sickle cell anaemia shows(a) Epistrasis(b) Co-dominance(c) Pleiotropy(d) Incomplete dominance

Answer»

Answer (a) Epistrasis

23397.

Write the infectious forms of Plasmodium which enter human body through mosquito bite.

Answer»

Sporozoites.

23398.

The human chromosome with highest and least number of genes are(a) Chromosome 21 and Y(b) Chromosome 1 and X(c) Chromosome 1 and Y(d) Chromosome X and Y

Answer»

Answer (b) Chromosome 1 and X

23399.

Recent studies have indicated that one of the possible reasons behind male infertility is certain mutations in the mitochondrial DNA of the sperms that affect the way mitochondria in the sperms function. What could be a possible effect of such a mutation on the sperm? A. It lowers the sperm count. B. It lowers the sperm motility. C. It lowers the ability to penetrate the egg. D. It lowers the ability to produce hormones.

Answer»

B. It lowers the sperm motility. 

23400.

Which chromosome of man has the least number of genes?

Answer»

Y chromosome.