Recent questions tagged class11

Distance of a point $P(\overrightarrow c)$ from the the line $\overrightarrow r=\overrightarrow a+\lambda \overrightarrow b$ is ?

asked Jan 6, 2014 by rvidyagovindarajan_1

1 answer

Given an AP, if the sum of first 5 terms is 175 and the sum of first 10 terms is 700, find the sum of the first 7 terms.

asked Jan 6, 2014 by yamini.v

1 answer

Find the sum of all natural numbers between 45 and 300 that are exactly divisible by 7.

asked Jan 5, 2014 by yamini.v

1 answer

How many 3 digit numbers leave a remainder of 2 when divided by 7 ?

asked Jan 5, 2014 by yamini.v

1 answer

How many 3 digit numbers are divisible by 5?

asked Jan 5, 2014 by yamini.v

1 answer

How many two digit numbers are divisible by 4?

asked Jan 5, 2014 by yamini.v

1 answer

Which term of the sequence 130,126,122----- is the first negative term.

asked Jan 5, 2014 by yamini.v

1 answer

Find the value of $n$ such that the $n^{th}$ term of the sequences 27,24,21------- and 2,4,6----- are equal.

asked Jan 5, 2014 by yamini.v

1 answer

A line passes through the points with position vectors are $\hat i+\hat j-2\hat k$ and $\hat i-3\hat j+\hat k$. The position vector of a point on the line which is at a unit distance from the first point is ?

asked Jan 5, 2014 by rvidyagovindarajan_1

1 answer

If $\overrightarrow a,\overrightarrow b,\overrightarrow c$ are position vectors of three non collinear points $A,B,C$ respectively, then the shortest distance of $A$ from $BC$ is ?

asked Jan 5, 2014 by rvidyagovindarajan_1

1 answer

The distance of the point $(1,1,1) $ from the plane passing through the points $(2,1,1),\:(1,2,1)\:and\:(1,1,2)$ is ?

asked Jan 5, 2014 by rvidyagovindarajan_1

1 answer

The $n^{th}$ term of a progression is $2n+3$. What is the type of progression and what is its $15^{th}$ term.

asked Jan 4, 2014 by yamini.v

1 answer

Mycoplasma: Assertion (A): Mycoplasma can pass through bacterial filters Reason (R): Due to their plasticity Regarding (A) and (R):

asked Jan 3, 2014 by pady_1

1 answer

Mycoplasma is placed in

asked Jan 3, 2014 by pady_1

1 answer

In Mycoplasma the cells are bounded by :

asked Jan 3, 2014 by pady_1

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The fimbriae are :

asked Jan 3, 2014 by pady_1

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The pili are :

asked Jan 3, 2014 by pady_1

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Choose the odd one out - regarding surface structures of the bacteria and their role in motility. :

asked Jan 3, 2014 by pady_1

1 answer

Choose the odd one out - regarding surface structures of the bacteria :

asked Jan 3, 2014 by pady_1

1 answer

Bacterial flagellum is composed of –

asked Jan 3, 2014 by pady_1

1 answer

Motile bacteria, they have thin filamentous extensions from their cell wall known as :

asked Jan 3, 2014 by pady_1

2 answers

1. Bacterial cells may be motile 2. Bacterial cells may be non-motile. Regarding 1 and 2 :

asked Jan 3, 2014 by pady_1

1 answer

In some prokaryotes : 1. There are membranous extensions into the cytoplasm called chromatophores 2. Chromatophores contain pigments. Regarding 1 and 2 :

asked Jan 3, 2014 by pady_1

1 answer

Mesosome help in respiration, secretion processes, to :

asked Jan 3, 2014 by pady_1

1 answer

Mesosome help in :

asked Jan 3, 2014 by pady_1

1 answer

Mesosome help in :

asked Jan 3, 2014 by pady_1

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Mesosome is formed by extensions of plasma membrane into the cell in the form of :

asked Jan 3, 2014 by pady_1

1 answer

The plasma membrane is :

asked Jan 3, 2014 by pady_1

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The cell wall :

asked Jan 3, 2014 by pady_1

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Gram stain : 1. Those that take up the gram stain are Gram positive 2. Those that do not are called Gram negative bacteria Regarding 1 and 2 :

asked Jan 3, 2014 by pady_1

1 answer

Bacteria can be classified into two groups - Gram positive and Gram negative on the basis of :

asked Jan 3, 2014 by pady_1

1 answer

Regarding prokaryotes and eukaryotes choose the incorrect option:

asked Jan 3, 2014 by pady_1

1 answer

Regarding plasmid DNA choose the incorrect option:

asked Jan 3, 2014 by pady_1

1 answer

Membrane bound organelles are absent in

asked Jan 3, 2014 by pady_1

1 answer

Choose the odd one out :

asked Jan 3, 2014 by pady_1

1 answer

1. Cells of bacteria could be 30 to 50 μm in length. 2. The largest isolated single cell is the egg of an ostrich. Regarding 1 and 2 :

asked Jan 3, 2014 by pady_1

1 answer

$Na^+/k^+$ Pump is

asked Jan 3, 2014 by pady_1

1 answer

1. Animal and plant cells contain non-membrane bound organelle called centriole 2. Centriole helps in cell division. Regarding 1 and 2 :

asked Jan 3, 2014 by pady_1

1 answer

The prokaryotic cells have

asked Jan 3, 2014 by pady_1

1 answer

1. The eukaryotic cells have other membrane bound distinct structures called organelles. 2. The prokaryotic cells lack membrane bound organelles. Regarding 1 and 2 :

asked Jan 3, 2014 by pady_1

1 answer

1. The cytoplasm is the main arena of cellular activities in both the plant and animal cells. 2. Various chemical reactions occur in it to keep the cell in the ‘living state’. Regarding 1 and 2 :

asked Jan 3, 2014 by pady_1

1 answer

In both prokaryotic and eukaryotic cells, A semi-fluid matrix, cytoplasm occupies the volume of the cell in :

asked Jan 3, 2014 by pady_1

1 answer

1. Cells that have membrane bound nuclei are called eukaryotic 2. Cells that lack a membrane bound nucleus are called prokaryotic. Regarding 1 and 2 :

asked Jan 3, 2014 by pady_1

1 answer

Omnis cellula-e cellula means :

asked Jan 3, 2014 by pady_1

1 answer

Cell theory : 1. All living organisms are composed of cells and products of cells. 2. All cells arise from pre-existing cells.

asked Jan 3, 2014 by pady_1

1 answer

1. Schleiden and Schwann together formulated the cell theory. 2. This theory explains how new cells were formed from prexisting cells.

asked Jan 3, 2014 by pady_1

1 answer

1. Anton Von Leeuwenhoek first saw and described a live cell. 2. Robert Brown later discovered the nucleus. Regarding 1 and 2 :

asked Jan 3, 2014 by pady_1

1 answer

Regarding Cell : Assertion (A): Cell is the fundamental structural and functional unit of all living organisms. Reason (R): Anything less than a complete structure of a cell does not ensure independent living. Regarding (A) and (R) :

asked Jan 3, 2014 by pady_1

1 answer

Unicellular organisms are capable of :

asked Jan 3, 2014 by pady_1

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Regarding Reductionist Biology choose the incorrect one :

asked Jan 3, 2014 by pady_1

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