cell 2

Question 1

the part of the cell that interacts with the outer world

Answer 1

plasma membrane

Question 2

structures helping bacteria to attach to rocks in streams and also to host tissue

Answer 2

frimbriae

Question 3

size of ribosomes

Answer 3

15 nm by 20 nm

Question 4

typical shape of mitochondria

Answer 4

sausage shape or cylindrical

Question 5

dimensions of a mitochondria

Answer 5

length - 1-4.1 micrometer
diameter- 0.2-1 micrometer

Question 6

what’s present in the matrix of mitochondria

Answer 6

single circular DNA molecule
few RNA molecule
70S ribosomes
components for protein synthesis

Question 7

mitochondria divide by

Answer 7

fission

Question 8

chromoplast contain

Answer 8

fat soluble carotenoid pigments like carotene and xanthophyll

Question 9

flat membranous tubules that connect the thylakoids of different granas are called

Answer 9

stroma lamellae

Question 10

components of stroma of chloroplast

Answer 10

small double stranded circular DNA
ribosomes 70S

Question 11

cholorophyll pigments are present in the

Answer 11

thylakoids

Question 12

ribosomes of chloroplast are smaller the cytoplasmic ribosomes,, true or false

Answer 12

TRUE AS FUCK

Question 13

size of eukaryo ribosomes and prokaryo ribosomes

Answer 13

80S and 70 S both can be found
70S

Question 14

both centrioles and flagella emerge from

Answer 14

centriole like bodies called basal bodies

Question 15

cartwheel organization can be seen in

Answer 15

centrioles in a centrosome

Question 16

material of the nucleus stained with _ dyes was given the name _ by _

Answer 16

basic dyes
chromatin
flemming

Question 17

width of perinuclear space

Answer 17

10-50 nm

Question 18

site of active ribosomal RNA synthesis

Answer 18

nucleolus

Question 19

primary constriction

Answer 19

centromere

Question 20

sometimes a few chromosomes have a (i) _ secondary constriction at (ii) _ positions. this gives the appearance of a fragment called (iii)_

(i) a. staining (ii) a. constant
b. non-staining b. variable

Answer 20

non-staining
constant
satellite

Question 21

microbodies

Answer 21

membrane bound minute vesicles
contain various enzymes
present in both plants and animals

Question 22

plastids are found only in plant cells?

Answer 22

false,, they are also present in euglenoids

Question 23

what part of the chloroplast contain enzymes required for the synthesis of carbohydrates and proteins

Answer 23

stroma

Question 24

plastids are _ observed under the microscope because they are _ in size

Answer 24

easily observable
large in size

Question 25

length and width of chloroplast

Answer 25

5-10 micrometer
2-4 micrometer

Question 26

prokarytoic plasma membrane is _ permeable

Answer 26

semi

Question 27

prokaryotic plasma membrane is similar structurally to that of eukaryotic plasma membrane, true or false

Answer 27

true true true

Question 28

mesosome extensions are in the form of

Answer 28

tubules, lamellae and vesicles

Question 29

which organelle, unless specifically stained is not easily visible under the microscope

Answer 29

mitochondria

Question 30

what, in chloroplast, is responsible for trapping light energy essential for photosynthesis

Answer 30

chlorophyll and carotenoid pigments

Question 31

stroma of the thylakoid contain enzymes required for the synthesis of

Answer 31

carbs and proteins

Question 32

space enclosed by a thylakoid

Answer 32

lumen