biology 🧬

Question 1

chemical equation of photosynthesis

Answer 1

6CO2 + 6H2O -> C6H12O6 + 6O2

Question 2

chemical equation of cellular respiration

Answer 2

C6H12O6 + 6O2 -> 6CO2 + 6H2O

Question 3

what is ph

Answer 3

logarithmic scale which tells you the acidity of a material

Question 4

7 pH

Answer 4

neutral

Question 5

< 7 pH

Answer 5

acidic

Question 6

> 7 pH

Answer 6

basic

Question 7

glucose chem formula

Answer 7

C6H12O6

Question 8

nitrogen dioxide chem formula

Answer 8

NO2

Question 9

water chem formula

Answer 9

H2O

Question 10

carbon dioxide formula

Answer 10

CO2

Question 11

oxygen chemical formula

Answer 11

O2

Question 12

what do ecosystems show

Answer 12

the flow of energy

Question 13

producers meaning

Answer 13

organisms that create their own foods (aka autotroph) - these are always at the start of a food chain/web

Question 14

consumer meaning

Answer 14

an organism that receives energy by consumption

Question 15

decomposer meaning

Answer 15

organism that breaks down dead organic material

Question 16

sequence of events in disease progression

Answer 16

infection → symptoms → treatment

Question 17

pathogen meaning

Answer 17

an organism causing disease to its host

Question 18

host meaning

Answer 18

an organism harboring another organism, in a symbiotic relationship

Question 19

1m = ?mircometre

Answer 19

1,000

Question 20

body systems are…

Answer 20

groups of organs that work together to perform essential functions

Question 21

nervous system main function

Answer 21

Controls body activities, transmits signals

Question 22

nervous system key organs/structures

Answer 22

brain, spinal cord, nerves

Question 23

circulatory system function

Answer 23

Transports oxygen, nutrients, and waste

Question 24

circulatory system’s key organs/structures

Answer 24

heart, blood vessels, blood

Question 25

respiratory system function

Answer 25

Exchanges gases (oxygen in, CO₂ out)

Question 26

respiratory System's key organs/structures

Answer 26

lungs, trachea, bronchi

Question 27

digestive system function

Answer 27

break down food & absorb nutrients

Question 28

digestive system key Organs/Structures

Answer 28

Mouth, stomach, intestines

Question 29

Excretory System main function

Answer 29

removes waste from body

Question 30

Excretory System key organs/structures

Answer 30

kidneys, bladder, liver

Question 31

Skeletal System main function

Answer 31

provides structure, support and protection

Question 32

Skeletal System key organs/structures

Answer 32

bones, cartilage, joints

Question 33

muscular system's main function

Answer 33

enables movement and maintains posture

Question 34

muscular system's key organs/structures

Answer 34

muscles/tendons

Question 35

Endocrine System's main function

Answer 35

Produces hormones for regulation

Question 36

Endocrine System's key organs/structures

Answer 36

Glands (pituitary, thyroid, pancreas)

Question 37

Immune System's main function

Answer 37

defends against infections

Question 38

Immune System's key organs/structures

Answer 38

White blood cells, lymph nodes, spleen

Question 39

Reproductive System's main function

Answer 39

produce offspring

Question 40

Reproductive System's key organs/structures

Answer 40

ovaries, testes, uterus

Question 41

Integumentary System's main function

Answer 41

protects the body (skin,hair,nails)

Question 42

Integumentary System's key organs/structures

Answer 42

skin, sweat glands

Question 43

steps in DNA replication

Answer 43

1. helicase unzips the double helix by breaking hydrogen bonds 2. the enzyme DNA polymerase adds nucleotides to each strand 3. A pairs with T, C pairs with G 3. now 2 new dna molecules are formed, each w one og strand and one new strand

Question 44

what is a Punnett square used for

Answer 44

predicting the probability of traits being inherited

Question 45

gene definition

Answer 45

A section of DNA that codes for a specific trait (eg: gene for eye colour)

Question 46

allele

Answer 46

Different versions of a gene (eg: blue eyes vs brown eyes)

Question 47

trait definition

Answer 47

a characteristic determined by genes (eye colour, height, hair type)