Under certain condition scientist have obtained cell-like structures. These are known as

Under certain condition scientist have obtained cell-like structures. These are known as
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Under certain condition scientist have obtained cell-like structures. These are known as A. Microbes B. Protists C. Cacervates D. Prebiotic soup
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Using X-ray crystallography, this woman scientist determined the structures of large biochemical molecules, including penicillin in 1949 and vitamin B12 in 1956. In 1969 she determined the three dimensional structure of insulin. In 1964 she was awarded the Nobel Prize in chemistry "for her determination by X-ray techniques of the structures of important biochemical substances." Name this woman scientist.

Description : Using X-ray crystallography, this woman scientist determined the structures of large biochemical molecules, including penicillin in 1949 and vitamin B12 in 1956. In 1969 she determined the three ... X-ray techniques of the structures of important biochemical substances." Name this woman scientist.

Last Answer : ANSWER: (DOROTHY) CROWFOOT HODGKIN

The Manufacturer of aeration devices reports the oxygen transfer rate of the device obtained through laboratory tests carried under standard conditions. Such standard condition are : (a) Wastewater at zero DO, 25°C and 760 mm Hg (b) Tapwater at zero DO, 0°C and 700 mm Hg (c) Tapwater at zero DO, 20°C and 760 mm Hg (d) Wastewater at zero DO, 0°C and 700 mm Hg

Description : The Manufacturer of aeration devices reports the oxygen transfer rate of the device obtained through laboratory tests carried under standard conditions. Such standard condition are : (a) Wastewater at zero DO, 25°C and 760 mm ... DO, 20°C and 760 mm Hg (d) Wastewater at zero DO, 0°C and 700 mm Hg

Last Answer : (c) Tapwater at zero DO, 20°C and 760 mm Hg

What forensic scientist is trying to find out the number of adenine in the DNA sample that he obtained from a crime scene. What can he assume about the number of adenine?

Description : What forensic scientist is trying to find out the number of adenine in the DNA sample that he obtained from a crime scene. What can he assume about the number of adenine?

Last Answer : the number of adenine will be equal to the number of guanine

What forensic scientist is trying to find out the number of adenine in the DNA sample that he obtained from a crime scene. What can he assume about the number of adenine?

Description : What forensic scientist is trying to find out the number of adenine in the DNA sample that he obtained from a crime scene. What can he assume about the number of adenine?

Last Answer : the number of adenine will be equal to the number of guanine

The study of homologous structures in mature organism provides evidence for the evolutionary relationships among certain groups of organisms. Which fi

Description : The study of homologous structures in mature organism provides evidence for the evolutionary relationships among certain groups of organisms. Which fi

Last Answer : The study of homologous structures in mature organism provides evidence for the evolutionary ... Biochemistry C. Geology D. Comparative anatomy

Welded structures with to riveted structures for a certain load are a. Heavier b. Lighter c. Same weight d. None

Description : Welded structures with to riveted structures for a certain load are a. Heavier b. Lighter c. Same weight d. None

Last Answer : b. Lighter

What type of information is being presented by a scientist who has a reason for presenting information is certain way?

Description : What type of information is being presented by a scientist who has a reason for presenting information is certain way?

Last Answer : Biased

Who was the first scientist credited with pointing out that certain gases could cause a greenhouse effect? w) John Tyndall x) Charles Darwin y) Roger Tory Peterson z) Stephen Jay Gould

Description : Who was the first scientist credited with pointing out that certain gases could cause a greenhouse effect? w) John Tyndall x) Charles Darwin y) Roger Tory Peterson z) Stephen Jay Gould 

Last Answer : ANSWER: W -- JOHN TYNDALL  

An 8-year-old child presented with brownish discoloured and deformed anterior teeth. History of having received an antibiotic about 4 years earlier was obtained. Which antibiotic could be responsible for the condition ? (a) Chloramphenicol (b) Tetracycline (c) Erythromycin (d) Genetamicin

Description : An 8-year-old child presented with brownish discoloured and deformed anterior teeth. History of having received an antibiotic about 4 years earlier was obtained. Which antibiotic could be responsible for the condition ? (a) Chloramphenicol (b) Tetracycline (c) Erythromycin (d) Genetamicin

Last Answer : Ans: B

An 8-year-old child presented with brownish discoloured and deformed anterior teeth. History of having received an antibiotic about 4 years earlier was obtained. Which antibiotic could be responsible for the condition: A. Chloramphenicol B. Tetracycline C. Erythromycin D. Gentamicin

Description : An 8-year-old child presented with brownish discoloured and deformed anterior teeth. History of having received an antibiotic about 4 years earlier was obtained. Which antibiotic could be responsible for the condition: A. Chloramphenicol B. Tetracycline C. Erythromycin D. Gentamicin

Last Answer : Tetracycline

A certain hypohalite on treating with hot and conc. NaOH forms anions P and Q. More stable anion among P and Q can be obtained by neutralizing Its con

Description : A certain hypohalite on treating with hot and conc. NaOH forms anions P and Q. More stable anion among P and Q can be obtained by neutralizing Its con

Last Answer : A certain hypohalite on treating with hot and conc. NaOH forms anions P and Q. More stable ... produces a gas which Is used in fire extinguisher.

The Average of marks obtained by 120 candidates in a certain examination is 35. If the average marks of passed candidates is 39 and that of failed candidates is 15, what is the number of candidates who passed the examination? A.90 B.100 C.108 D.115 E.None of these

Description : The Average of marks obtained by 120 candidates in a certain examination is 35. If the average marks of passed candidates is 39 and that of failed candidates is 15, what is the number of candidates who passed the examination? A.90 B.100 C.108 D.115 E.None of these

Last Answer : Answer – B (100) Explanation – Let the number of passed candidates be a Then total marks =>120 x 35 = 39 a + (120 – a) x 15 4200 = 39 a + 1800 – 15 a a = 100

A sum was invested for 4 yr at a certain rate of simple interest. If it had been invested at 2% more annual rate of interest, then Rs. 64 more would have been obtained. What is the sum? (a) Rs.600 (b) Rs.700 (c) Rs.800 (d) Rs.900

Description : A sum was invested for 4 yr at a certain rate of simple interest. If it had been invested at 2% more annual rate of interest, then Rs. 64 more would have been obtained. What is the sum? (a) Rs.600 (b) Rs.700 (c) Rs.800 (d) Rs.900

Last Answer : (c) Rs.800

If you needed to execute some code repeatedly based on a certain condition, which of the following would you use: a) Compiler b) Loop c) Variable d) None of These

Description : If you needed to execute some code repeatedly based on a certain condition, which of the following would you use: a) Compiler b) Loop c) Variable d) None of These

Last Answer : b) Loop

Which of the following is not a condition for drafts to be negotiable? A. must be in writing, signed by the drawer B. must contain a promise to pay a certain sum if goods are received C. must contain an order to pay D. must be payable on sight or at a specified date E. must be made out to order or bearer

Description : Which of the following is not a condition for drafts to be negotiable? A. must be in writing, signed by the drawer B. must contain a promise to pay a certain sum if goods are received C. must contain an ... D. must be payable on sight or at a specified date E. must be made out to order or bearer

Last Answer : B. must contain a promise to pay a certain sum if goods are received

Benefit afforded by certain H1 antihistaminics in the following condition is not based on antagonism of histamine: A. Dermographism B. Insect bite C. Common cold D. Seasonal hay fever

Description : Benefit afforded by certain H1 antihistaminics in the following condition is not based on antagonism of histamine: A. Dermographism B. Insect bite C. Common cold D. Seasonal hay fever

Last Answer : C. Common cold

Name the green dot like structures in some cells observed by a student when a leaf peel was viewed under a microscope. What is this green colour due to? -Biology

Description : Name the green dot like structures in some cells observed by a student when a leaf peel was viewed under a microscope. What is this green colour due to? -Biology

Last Answer : The green dot-like structures in some cells observed by a student when a leaf peel is viewed under a microscope are chloroplasts. The green colour is due to the presence of green pigment, chlorophyll.

Which is correct about cell theory in view of current status of our knowledge about cell structure? (a) It needs modification due to discovery of subcellular structures like chloroplasts and mitochondria. (b) Modified cell theory means that all living being are composed of cells capable of reproducing. (c) Cell theory does not hold good because all living beings (e.g., viruses) do not have cellular organisation. (d) Cell theory means that all living objects consists of cells whether or not capable of reproducing

Description : Which is correct about cell theory in view of current status of our knowledge about cell structure? (a) It needs modification due to discovery of subcellular structures like chloroplasts and ... Cell theory means that all living objects consists of cells whether or not capable of reproducing

Last Answer : (c) Cell theory does not hold good because all living beings (e.g., viruses) do not have cellular organisation.

What are the structures called that give an appearance as ‘beads-on-string’ in the chromosomes when viewed under electron microscope? (a) Genes (b) Nucleotides (c) Nucleosomes (d) Base pairs

Description : What are the structures called that give an appearance as ‘beads-on-string’ in the chromosomes when viewed under electron microscope? (a) Genes (b) Nucleotides (c) Nucleosomes (d) Base pairs

Last Answer : Nucleosomes

Which of the following statements is not correct? (a) Lysosomes are formed by the process of packaging in the endoplasmic reticulum. (b) Lysosomes have numerous hydrolytic enzymes. (c) The hydrolytic enzymes of lysosomes are active under acidic pH. (d) Lysosomes are membrane-bound structures.

Description : Which of the following statements is not correct? (a) Lysosomes are formed by the process of packaging in the endoplasmic reticulum. (b) Lysosomes have numerous hydrolytic enzymes. (c) The hydrolytic enzymes of lysosomes are active under acidic pH. (d) Lysosomes are membrane-bound structures.

Last Answer : (a) Lysosomes are formed by the process of packaging in the endoplasmic reticulum.

The Castigliano's second theorem can be used to compute deflections (A) In statically determinate structures only (B) For any type of structure (C) At the point under the load only (D) For beams and frames only

Description : The Castigliano's second theorem can be used to compute deflections (A) In statically determinate structures only (B) For any type of structure (C) At the point under the load only (D) For beams and frames only

Last Answer : (B) For any type of structure

For construction of structures under water, the type of lime used, is (A) Hydraulic lime (B) Fat lime (C) Quick lime (D) Pure lime

Description : For construction of structures under water, the type of lime used, is (A) Hydraulic lime (B) Fat lime (C) Quick lime (D) Pure lime

Last Answer : Answer: Option A

Pick up the correct statement from the following: (A) For thin structures subjected to wetting and drying, the water cement ratio should be 0.45 (B) For mass concrete structures subjected to wetting and drying, the water ratio should be 0.55 (C) For thin structures which remain continuously under water, the water-cement ratio by weight should be 0.55 (D) All the above

Description : Pick up the correct statement from the following: (A) For thin structures subjected to wetting and drying, the water cement ratio should be 0.45 (B) For mass concrete structures subjected to wetting and ... under water, the water-cement ratio by weight should be 0.55 (D) All the above

Last Answer : Answer: Option D

Pick up the correct statement from the following: (A) Inclined borings are made for taking samples under existing structures (B) Inclined borings are occasionally used instead of vertical holes (C) The spacing of inclined borings is kept such that one bore hole is vertically above the bottom of an adjacent bore hole (D) All the above

Description : Pick up the correct statement from the following: (A) Inclined borings are made for taking samples under existing structures (B) Inclined borings are occasionally used instead of vertical holes (C) The ... bore hole is vertically above the bottom of an adjacent bore hole (D) All the above

Last Answer : Answer: Option D

Under reamed piles are generally used for (A) Machine foundations (B) Factory building (C) Tall structures (D) All the abo

Description : Under reamed piles are generally used for (A) Machine foundations (B) Factory building (C) Tall structures (D) All the above

Last Answer : Answer: Option D

Select the incorrect statement [ A ] R.C.C has better fire resistance than steel [ B ] R.C.C. structure is economical than steel structure [ C ] Strength of concrete decreases as age increases [ D ] R.C.C can be used for under water and marine structures

Description : Select the incorrect statement [ A ] R.C.C has better fire resistance than steel [ B ] R.C.C. structure is economical than steel structure [ C ] Strength of concrete decreases as age increases [ D ] R.C.C can be used for under water and marine structures

Last Answer : [ C ] Strength of concrete decreases as age increases

Numerous thread like structures which forms the skeleton of the nucleus; is known as?

Description : Numerous thread like structures which  forms the skeleton of the nucleus; is known as?

Last Answer : Chromatin network

If you are interested to perceive yourself as a 'Scientist' then what sort of changes will you prefer in yourself? Options: A) Registration for Ph.D. Degree B) Training under the guidance of a scientist C) Full of scientific excitement D) Development of scientific attitude

Description : If you are interested to perceive yourself as a 'Scientist' then what sort of changes will you prefer in yourself? Options: A) Registration for Ph.D. Degree B) Training under the guidance of a scientist C) Full of scientific excitement D) Development of scientific attitude

Last Answer : D) Development of scientific attitude

Put the following structures in order from smallest to biggest, Chromosome, Genome, Nucleotide Base, Codon, Gene, Cell Nucleus?

Description : Put the following structures in order from smallest to biggest, Chromosome, Genome, Nucleotide Base, Codon, Gene, Cell Nucleus?

Last Answer : The order is nitrogenous base, nucleotide, codon, gene, chromosome, nucleus, and cell. :)

Which type of microscope is used to study extremely small things, such as cell structures by passing a beam of electrons through an object?

Description : Which type of microscope is used to study extremely small things, such as cell structures by passing a beam of electrons through an object?

Last Answer : optical microscope

Which of the following structures is not found in a prokaryotic cell?

Description : Which of the following structures is not found in a prokaryotic cell?

Last Answer : Which of the following structures is not found in a prokaryotic cell? A. Plasma membrane B. Nuclear evelope C. Ribosome D. Mesosome

Which one of the following structures is an organelle within an organelle " " Or Which of the following cell organelle lacks DNA and bounding membrane

Description : Which one of the following structures is an organelle within an organelle " " Or Which of the following cell organelle lacks DNA and bounding membrane

Last Answer : Which one of the following structures is an organelle within an organelle " " Or Which of the following ... . ER B. Mesosome C. Ribosome D. Peroxisome

An elaborate network of filamentous proteinaceous structures present in the cytoplasm which helps in the maintenacne of cell shape is called

Description : An elaborate network of filamentous proteinaceous structures present in the cytoplasm which helps in the maintenacne of cell shape is called

Last Answer : An elaborate network of filamentous proteinaceous structures present in the cytoplasm which helps in ... B. Plasmalemma C. Cytoskeleton D. Thylakoid

In the diagrams of the animal cell label the structures indicated by the lines?

Description : In the diagrams of the animal cell label the structures indicated by the lines?

Last Answer : Need answer

What are The cell stores waste in structures called?

Description : What are The cell stores waste in structures called?

Last Answer : Need answer

What cell structures are seen only in cells that absorb sunlight and carry out photosynthesis?

Description : What cell structures are seen only in cells that absorb sunlight and carry out photosynthesis?

Last Answer : What is the answer ?

What Structures responsible for cell transport?

Description : What Structures responsible for cell transport?

Last Answer : The structure or organelle is tRNA also known as transportproteins

structures surrounds the cytoplasm in a bacterial cell?

Description : structures surrounds the cytoplasm in a bacterial cell?

Last Answer : a cell wall or nueclues not sure

Which of these are tiny structures within the cell that have specific jobs to do within the cell?

Description : Which of these are tiny structures within the cell that have specific jobs to do within the cell?

Last Answer : organelles

Which of these are tiny structures within the cell that have specific jobs to do within the cell?

Description : Which of these are tiny structures within the cell that have specific jobs to do within the cell?

Last Answer : organelles

What are the main structures within the cell nucleus ?

Description : What are the main structures within the cell nucleus ?

Last Answer : Within the cell nucleus the main structures are: the nucleolus, an optically dense region, spherical shaped, where there are concentrated ribosomal RNA (rRNA) associated to proteins (there may be ... cell interphase; the karyotecha, or nuclear membrane, the membrane that delimits the nucleus.

Genetics is the branch of science that deals with the study of (a) Relations between plants and the environment (b) Inheritance and variation (c) Cell structure (d) Thermal structures

Description : Genetics is the branch of science that deals with the study of (a) Relations between plants and the environment (b) Inheritance and variation (c) Cell structure (d) Thermal structures

Last Answer : Ans:(b)

Which of the following pair have haploid structures? (a) Nucellus and antipodal cells (b) Antipodal cells and egg cell (c) Antipodal cells and megaspore mother cell (d) Nucellus and primary endosperm nucleus

Description : Which of the following pair have haploid structures? (a) Nucellus and antipodal cells (b) Antipodal cells and egg cell (c) Antipodal cells and megaspore mother cell (d) Nucellus and primary endosperm nucleus

Last Answer : (b) Antipodal cells and egg cell

Which one of the following pairs of plant structures has haploid number of chromosomes? (a) Nucellus and antipodal cells (b) Egg nucleus and secondary nucleus (c) Megaspore mother cell and antipodal cells (d) Egg cell and antipodal cells

Description : Which one of the following pairs of plant structures has haploid number of chromosomes? (a) Nucellus and antipodal cells (b) Egg nucleus and secondary nucleus (c) Megaspore mother cell and antipodal cells (d) Egg cell and antipodal cells

Last Answer : d) Egg cell and antipodal cells

Which of the following structures will not be common to mitotic cell of a higher plant?(a) Centriole (b) Spindle fibre (c) Cell plate (d) Centromere

Description : Which of the following structures will not be common to mitotic cell of a higher plant? (a) Centriole (b) Spindle fibre (c) Cell plate (d) Centromere

Last Answer : (a) Centriole

An elaborate network of filamentous proteinaceous structures present in the cytoplasm which helps in the maintenance of cell shape is called (a) thylakoid (b) endoplasmic reticulum (c) plasmalemma (d) cytoskeleton.

Description : An elaborate network of filamentous proteinaceous structures present in the cytoplasm which helps in the maintenance of cell shape is called (a) thylakoid (b) endoplasmic reticulum (c) plasmalemma (d) cytoskeleton.

Last Answer : (b) endoplasmic reticulum

Which structures perform the function of mitochondria in bacteria? (a) Nucleoid (b) Ribosomes (c) Cell wall (d) Mesosomes

Description : Which structures perform the function of mitochondria in bacteria? (a) Nucleoid (b) Ribosomes (c) Cell wall (d) Mesosomes

Last Answer : ) Mesosomes

Which of the following structures is not found in a prokaryotic cell? (a) Mesosome (b) Plasma membrane (c) Nuclear envelope (d) Ribosome

Description : Which of the following structures is not found in a prokaryotic cell? (a) Mesosome (b) Plasma membrane (c) Nuclear envelope (d) Ribosome

Last Answer : (c) Nuclear envelope

Which one of the following pairs of structures distinguishes a nerve cell from other types of cell? (a) Vacuoles and fibres (b) Flagellum and medullary sheath (c) Nucleus and mitochondria (d) Perikaryon and dendrites

Description : Which one of the following pairs of structures distinguishes a nerve cell from other types of cell? (a) Vacuoles and fibres (b) Flagellum and medullary sheath (c) Nucleus and mitochondria (d) Perikaryon and dendrites

Last Answer : d) Perikaryon and dendrites

Select the wrong statement. (a) Cell wall is present in members of fungi and plantae. (b) Mushrooms belong to basidiomycetes. (c) Pseudopodia are locomotory and feeding structures in sporozoans. (d) Mitochondria are the powerhouse of the cell in all kingdoms except monera

Description : Select the wrong statement. (a) Cell wall is present in members of fungi and plantae. (b) Mushrooms belong to basidiomycetes. (c) Pseudopodia are locomotory and feeding structures in sporozoans. (d) Mitochondria are the powerhouse of the cell in all kingdoms except monera

Last Answer : (c) Pseudopodia are locomotory and feeding structures in sporozoans.