classifying organisms - prokaryotes

Question 1

prokaryotes means

Answer 1

they don’t have a proper nucleus

Question 2

the genetic material inside a prokaryote is

Answer 2

in the cytoplasm in the form of a single circular chromosome

Question 3

some bacteria p… others are d….

Answer 3

photosynthesise others are decomposers

Question 4

(bacteria) _____________ breaks down milk sugars and is used in ______ production

Answer 4

lactobacillus is used in yoghurt production

Question 5

(bacteria) pneumococcus is pathogenic and one of the causes of

Answer 5

pneumonia

Question 6

bacteria are s___ and s_____

Answer 6

small and single-celled organisms

Question 7

bacterial cells have a

Answer 7

cell membrane
controls what enters and leaves the cell

Question 8

bacterial cell wall is made of

Answer 8

peptidoglycan
which maintains shape and protects the cell

Question 9

bacterial cells have a cytoplasm that

Answer 9

contains the circular chromosome where chemical reactions occur

Question 10

many bacteria also have a _____ capsule

Answer 10

slime
outside the cell wall providing more protection

Question 11

many bacteria also have pl______

Answer 11

plasmids
(small circled of DNA containing extra genes)

Question 12

many bacteria also have a fl_______

Answer 12

flagellum
which allows the bacteria to move

Question 13

pathogens are microorganisms that

Answer 13

cause infectious disease

Question 14

pathogens harm the host by

Answer 14

releasing toxins damaging cells

Question 15

all viruses are

Answer 15

pathogens

Question 16

b_______ f____ and p__________ can also be pathogens

Answer 16

bacteria, fungi and protoctista

Question 17

viruses are a … surrounded by

Answer 17

strand of genetic material
surrounded by a protein coat

Question 18

viruses are NOT

Answer 18

cells and not alive

Question 19

to reproduce viruses,

Answer 19

enter a host cell
take over ribosomes and enzymes
make new virus particles
the cell dies
the viruses are released to infect new cells

Question 20

viruses can affect

Answer 20

ALL other organisms

(tobacco mosaic virus in leaves)
(influenza infects humans - cough&temp)

Question 21

decomposers (fungi&SOMEbacteria) feed by s… nutrition

Answer 21

saprotrophic nutrition

Question 22

how does saprotrophic nutrition work

Answer 22

they secrete digestive enzymes out their cells onto the
dead organism,
the dead organism is broken down into small soluble molecules
that are then absorbed by the decomposer