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Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
Computer Science
8 followers study24x7 18 Mar 2026 12:35 PM study24x7 study24x7

Which of the following may account for the small size of the cells?

A

The rate of diffusion

B

The surface area/volume ratio

C

The number of mRNAs that can be produced by the nucleus

D

All of the above

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Computer Science
8 followers study24x7 18 Mar 2026 12:34 PM study24x7 study24x7

Which of the following structures is the smallest?

A

Viriod

B

Hydrogen atom

C

Bacterium

D

Mitochondrion

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Computer Science
8 followers study24x7 18 Mar 2026 12:33 PM study24x7 study24x7

All of the following are features of prokaryotes except

A

nitrogen fixation

B

photosynthesis

C

sexual reproduction

D

locomotion

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Computer Science
8 followers study24x7 17 Mar 2026 10:48 AM study24x7 study24x7

Primary differences between cilia and flagella are

A

arrangement of microtubules

B

length and location of basal bodies

C

how the microtubules are fused to each other

D

number, length and direction of force

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Computer Science
8 followers study24x7 17 Mar 2026 10:48 AM study24x7 study24x7

The membranes of which domains are chemically the most similar?

A

Archaea and Bacteria

B

Bacteria and Eukarya

C

Eukarya and Archaea

D

membranes of all three domains are chemically identical

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Computer Science
8 followers study24x7 17 Mar 2026 10:47 AM study24x7 study24x7

The five-kingdom system of classification was set up by

A

Louis Pasteur

B

Robert Whittaker

C

Robert Koch

D

Masaki Ogata

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Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
Computer Science
8 followers study24x7 16 Mar 2026 12:20 PM study24x7 study24x7

Cell theory includes all of the following except

A

all organisms are composed of one or more cells

B

the cell is the most primitive form of life

C

the cell is the structural unit of life

D

cells arise by division of preexisting cells

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Computer Science
8 followers study24x7 16 Mar 2026 12:19 PM study24x7 study24x7

A characteristic of protein synthesis in both the archaea and eukarya is

A

transcription and translation are coupled

B

translation is inhibited by diphtheria toxin

C

proteins are synthesized from D-, rather than L-, isomers of amino acids

D

the initiator tRNA is charged with N-formyl-methionine

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Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
Computer Science
8 followers study24x7 16 Mar 2026 12:18 PM study24x7 study24x7

Which one is not studied in microbiology?

A

Bacteria

B

Animal behaviour

C

Fungi

D

Algae

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Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
Computer Science
8 followers study24x7 13 Mar 2026 03:48 PM study24x7 study24x7

Which of the following structure is absent in eukaryotic cells?

A

Mitochondria

B

Chloroplasts

C

Golgi structure

D

Mesosome

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Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
Computer Science
8 followers study24x7 13 Mar 2026 03:47 PM study24x7 study24x7

Mycoplasmas, rickettsiae, and chlamydiae are

A

types of fungi

B

small bacteria

C

species of protozoa

D

forms of viruses

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Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
Computer Science
8 followers study24x7 13 Mar 2026 03:47 PM study24x7 study24x7

Living organisms have many complex characteristics. Which one of the following is shared by non-living matter as well?

A

Homeostasis

B

Tissues

C

Reproduction

D

Molecules

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Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
Computer Science
8 followers study24x7 12 Mar 2026 01:14 PM study24x7 study24x7

Various bacterial species can be subdivided into

A

subspecies

B

biovarieties

C

serovarieties

D

all of these

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Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
Computer Science
8 followers study24x7 12 Mar 2026 01:13 PM study24x7 study24x7

Gram staining was introduced by

A

Christian gram

B

Alfred Gram

C

Robertcook

D

Louis Pasteur

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Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
Computer Science
8 followers study24x7 12 Mar 2026 01:11 PM study24x7 study24x7

Evolutionary relationships between groups of organisms are determined using which of the following type of information?

A

Comparisons of nucleotide sequences

B

Comparisons of biochemical pathways

C

Comparisons of structural features

D

All of the above

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Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
Computer Science
8 followers study24x7 11 Mar 2026 12:43 PM study24x7 study24x7

Mycoplasmas are different from the other prokaryotes by

A

presence of chitin in cell walls

B

presence of murrain in cell walls

C

presence of proteins in cell walls

D

absence of cell wall itself

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Computer Science
8 followers study24x7 11 Mar 2026 12:41 PM study24x7 study24x7

The unifying feature of the archaea that distinguishes them from the bacteria is

A

habitats which are extreme environments with regard to acidity

B

absence of a nuclear membrane temperature

C

presence of a cell wall containing a characteristic outer membrane

D

cytoplasmic ribosomes that are 70S

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Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
Computer Science
8 followers study24x7 11 Mar 2026 12:37 PM study24x7 study24x7

Which were the investigators lived at the same time?

A

Koch and Pasteur

B

Darwin and Woese

C

Van Leeuenhoek and Ricketts

D

Berg and Hooke

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Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
Computer Science
8 followers study24x7 09 Mar 2026 12:06 PM study24x7 study24x7

Using the wardrobe structure within the ShopList structure is an example of a good programming principle, known as _____

A

reusability

B

polymorphism

C

redundancy

D

recursion

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Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
Computer Science
8 followers study24x7 09 Mar 2026 12:05 PM study24x7 study24x7

The _____ mode tells C++ to open a file for input

A

add::ios

B

in::file

C

ios::app

D

ios::in

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