Life Processes

Question 1

Steps of photosynthesis

Answer 1

(i) absorption[sunlight–>chem energy] (ii) conversion [splitting H2 0 –> H2 + O; in presence of sunlight; due-protons] (iii) reduction [Co2–>H2 O]

Question 2

6CO2 + 12H2O –>

Answer 2

C6H12O6 + 6H2O + 6O2

Question 3

light rxn; where? is light needed? is sugar formed? is O2 released?

Answer 3

grana; yes; nope; yes

Question 4

dark rxn; where? is light needed? is sugar formed? is O2 released?

Answer 4

stroma; nope; yes; nope

Question 5

holozoic? examples?

Answer 5

solid food; human, algae(some)

Question 6

saprophytes? examples?

Answer 6

dead and decaying; fungi, bacteria, Mushrooms and moulds

Question 7

parasite? examples?

Answer 7

host; Leeches, fleas, ticks, and lice

Question 8

Digestion process in Amoeba

Answer 8

ingestion -> digestion -> absorption -> assimilation -> egestion

Question 8

Digestion process in Amoeba

Answer 8

ingestion -> digestion -> absorption -> assimilation -> egestion

Question 9

glands associated with digestive system?

Answer 9

salivary, liver, pancreas

Question 10

salivary amylase

Answer 10

starch (carb)

Question 11

Stomach walls secrete?

Answer 11

Gastric juice –> HCl + enzyme pepsin + mucus

Question 12

which muscle regulates food?

Answer 12

sphincter

Question 13

Small intestine-parts?

Answer 13

3 parts duodenum jejunum, ileum

Question 14

small intestine secretes?

Answer 14

intestinal juice

Question 15

Liver secretes?

Answer 15

Bile Juice

Question 16

Pancreas?

Answer 16

secretes?

Question 17

intestinal juice does what

Answer 17

breaks down starch and carbs –> simpler sugars (glucose)
proteins –> amino acids
fats –>fatty acids –> fatty acids + glycerol

Question 18

pancreatic juice contains what and it does what?

Answer 18

trpsin –> proteins

lipase –> emulsifies fats

Question 19

what does bile juice do?

Answer 19

breaks down fats into tiny droplets

Question 20

Glucose(6-carbon molecule) –>[in cytoplasm] –> Pyruvate (3-carbon molecule) + Energy –> Absence of oxygen?

Answer 20

[in yeast] Ethanol + CO2 + Energy (2-carbon molecule)

Question 21

Glucose(6-carbon molecule) –>[in cytoplasm] –> Pyruvate (3-carbon molecule) + Energy –> Lack of oxygen?

Answer 21

(in muscle cells) Lactic acid + Energy (3-carbon-molecule)

Question 22

Glucose(6-carbon molecule) –>[in cytoplasm] –> Pyruvate (3-carbon molecule) + Energy –> Presence of oxygen?

Answer 22

(in mitochondria) CO2 + H2O + Energy

Question 23

diaphram contracts during?

Answer 23

inhalation - becomes flat

Question 24

diaphram relaxes during?

Answer 24

exhalation - dome shaped again

Question 25

which wall in heart is thicker?

Answer 25

Ventricle - pump blood

Question 26

valve b/w RA and RV

Answer 26

Tricuspid valve

Question 27

valve b/w RV-Pulmonary vein

Answer 27

Pulmonary valve

Question 28

valve b/w LA-LV

Answer 28

Mittral valve

Question 29

valve b/w LV-aorta

Answer 29

Aortic valve

Question 30

shortcut of valves

Answer 30

they were shooting a MV n wanted a TV hence went to Parth Ventricle but it was there so they got it from Amazon Ventricle [clockwise from LA]

Question 31

Flow of blood in the heart

Answer 31

Lung [oxygenated] ~pul vein ~ LA - LV ~ aorta ~ body

[deoxygenated] ~vena cava~ RA - RV ~pul art~ lung

Question 32

Flow of blood in veins

Answer 32

towards the heart

Question 33

Flow of blood in arteries

Answer 33

away from heart

Question 34

structural and functional unit of excretion

Answer 34

nephron

Question 35

filtration unit

Answer 35

glomerulus

Question 36

steps of filtration

Answer 36

(i) ultra filtration [bowman’s capsule] (ii) selective re-absorption [henle’s loop] {renal tubule} (iii) tubular secretion [henle’s loop] {renal tubule}

Question 37

what is filtered in kidneys?

Answer 37

nitrogenous waste such as urea or uric acid

Question 38

what is re-absorbed in urine formation?

Answer 38

glucose,

amino acids, salts and a major amount of water

Question 39

path of urine

Answer 39

ureter –> urinary bladder –> urethra