Cells

Question 1

Function of flagella in human body

Answer 1

Movement of sperm

Question 2

Nonmembrane bounded structure in cytoplasm

Answer 2

Proteasomes

Question 3

Organelles present in cells that produce and secrete hormones

Answer 3

Golgi apparatus,rough ER

Question 4

A process not limited by low ATP levels

Answer 4

Osmosis

Question 5

Site of storage of calcium in muscle cells

Answer 5

Smooth ER

Question 6

Which organelle is present in cells that produce a large amount of energy

Answer 6

Smooth er

Question 7

Structures involved in production of histones

Answer 7

Free ribosomes

Question 8

Structures that increase surface area in small intestine

Answer 8

Microvilli

Question 9

Function of mRNA

Answer 9

Acts as a template for the protein synthesis that takes place on ribosomes

Question 10

If cells placed in hypotonic solution (more water than solute )

Answer 10

Cells swell and burst

Question 11

What happens if amount of cholesterol in plasma membrane increases

Answer 11

Becomes more stiff and rigid but less permeable

Question 12

Function of cillia

Answer 12

Propels substances

Question 13

Which cell speacializations are Leak proof

Answer 13

Tight junctions

Question 14

How is oxygen transported to cells

Answer 14

By passive diffusion

Question 15

What forms part of the subunits for the protein synthesizing organelle

Answer 15

Ribosomal RNA

Question 16

A molecule that binds to a specific codon and specific amino acid simultaneously

Answer 16

Transfer RNA

Question 17

Function of synthetase enzymes

Answer 17

Attaches correct amino acid to its transfer rna

Question 18

What provides the energy needed for synthesis reactions

Answer 18

ATP

Question 19

mRNA

Answer 19

Produced in the nucleus,specifies the exact sequence of amino acids of the protein to be made

Question 20

Location of ribosomal RNA

Answer 20

Attached to ER or scattered in cytoplasm

Question 21

Telophase

Answer 21

Choromosomes uncoil to form chromatin

Question 22

Anaphase

Answer 22

Chromosomal centromeres split and chromosomals migrate to opposite ends of the cell

Question 23

When do nuclear membrane and nucleolus disintegrate l

Answer 23

Late prophase

Question 24

When do chromosomes align on spindle equator

Answer 24

Metaphase

Question 25

When do centrioles move to opposite ends of the cell

Answer 25

Early prophase

Question 26

Smooth ER

Answer 26

Plays a role in steroid production

Question 27

The organ that facilitates formation of peptide bonds

Answer 27

Ribosomes

Question 28

Microtubules

Answer 28

Plays a role in forming spindle fibers for cell division, organize, move organelles, give shape to the cell

Question 29

Synthesis site for ribosomal RNA

Answer 29

Nucleoli

Question 30

Location of genetic material of cell

Answer 30

Nucleus

Question 31

Prevents molecules from passing the extra cellular space

Answer 31

Tight junctions

Question 32

Desmosomes

Answer 32

Type of anchoring junction

Question 33

Allows ions and small molecules to pass through

Answer 33

Gap junction

Question 34

Present in electrically excitable tissue

Answer 34

Gap junctions

Question 35

Where are desmosemes present

Answer 35

Tissues subjected to great mechanical stress

Question 36

Result of mitosis

Answer 36

Daughter cells with identical genetic material as parent

Question 37

Apoptosis

Answer 37

Programmed cell suicide. (Cancer cells do not undergo this

Question 38

Introns

Answer 38

Represent a genome scrap yard that provides DNA segments for genome evolution

Question 39

When do enzymes needed for cell division synthesize

Answer 39

During G2 phase

Question 40

Where are lipid rafts found

Answer 40

Cell outer membrane surface

Question 41

What are microfilaments composed of

Answer 41

Actin subunits

Question 42

Components of extracrllular fluid

Answer 42

Blood plasma,interstitial fluid,transcellular fluid

Question 43

What does the speed of diffusion of particles depend on

Answer 43

Temperature and particle size, not concentration

Question 44

What does concentration difference cause

Answer 44

Ionic imbalance and hence cell membrane polarization and active transport processes