PLMAT

Question 1

cells

Answer 1

smallest living organism and basic unit of life on earth

Question 2

3 parts of cell

Answer 2

membrane, the nucleus, and the cytoplasm

Question 3

what’s nucleus?

Answer 3

contains of the cell’s DNA, sends messages to tell the cell to grow

Question 4

membrane

Answer 4

ensure cell remains separate

Question 5

cytoplasm

Answer 5

interiorof cell that surrounds the nucleus.

Question 6

Cytoskeleton 💀

Answer 6

forms/ helps cell maintain correct shape.

Question 7

endoplasmic reticulum (ER) 🤛

Answer 7

synthesizes, folds, and transports proteins.

Question 8

Golgi apparatus 📦

Answer 8

post office of cell, where items go through packaging

Question 9

mitochondria 🏠

Answer 9

powerhouses of cells.
help turn food into energy that cell can use

Question 10

Ribosomes

Answer 10

Ribonucleic acid (RNA)

Read RNA and translate it into proteins by sticking together amino acids

Question 11

two typesof cell division

mm

Answer 11

@ mitosis
most of cells in the body divide. The “parent” cell splits into two “daughter” cells.

@ meiosis
body produces sperm cells and egg cells.

Question 12

Cell types? SBBMSEN

Answer 12

stem cells
bone cells
blood cells
muscle cells
sperm cell
egg cell
nerve cell

Question 13

what is blood cell 🩸🩸💉

Answer 13

red blood cells - carry oxygen around body

white blood cells - part of immune system

platelets - help blood clot to prevent blood loss

Question 14

Isaac Newton

Answer 14

The Father of Modern Physics

Question 15

Heat and Thermodynamics

Answer 15

Heat- form of energy that produces hotness.

Thermodynamics- deals with the energy relationships involving heat

Question 16

Methods of heat transfer
CCR

Answer 16

Conduction: transfer of heat from hotter body to colder body

Convection: transmission of heat due to movement of medium

Radiation: heat gets transmitted without the action

Question 17

Types of equilibrium

TMC

Answer 17

Thermal equilibrium: temperature of every part of the system is the same as surroundings

Mechanical equilibrium: no unbalanced force

Chemical equilibrium: chemical composition is same throughout system.

Question 18

Internal Energy ⚡🔌

Answer 18

sum total of the kinetic energy

Question 19

kinetic energy.

Answer 19

energy possessed by atoms by virtue of their motion

Question 20

Work

Answer 20

energy spent to overcome an external force.

Question 21

electromagnetism 🔌

Answer 21

produced when electrical flows through conductor

Question 22

DNA?

Answer 22

Deoxyribonucleic acid - carries genetic information

Question 23

Molecule?

Answer 23

group of atoms together

Question 24

Isaac Newton 2nd Law

Answer 24

Law of acceleration

f = ma

Question 25

Ohms Law

Answer 25

current is voltage

Question 26

NPN BODIES? 🦭

Answer 26

Negative have excess electrons Positive deficiency of electron. Neutral the same number of protons and electrons.

Question 27

Law of inertia Isaac Newton - Law of motions

Answer 27

a body at rest will remain at rest a body in motion will move unless force acts on

Question 28

Transmutation ➡️⬅️⬆️⬇️

Answer 28

changing of one element to another

Question 29

2 types of nuclear reactions 🐠🐋🐟

Answer 29

Nuclear fission splitting of atom Nuclear fusion combining nuclei atom

Question 30

Sound

Answer 30

a longitudinal wave and mechanical wave.

Question 31

Sound can be transmitted in

Answer 31

solid, liquid or gas.

Question 32

Sound is slower than

Answer 32

light.

Question 33

Radioactive atoms - ABG

Answer 33

alpha particle beta particle gamma ray

Question 34

High frequency sound

Answer 34

high pitch

Question 35

Low frequency sound

Answer 35

low pitch.

Question 36

Sound can exhibit the following properties: RRID

Answer 36

reflection (echo and reverberation), refraction, interference diffraction.

Question 37

Doppler Effect 🌊 👋

Answer 37

waves is moving with respect

Question 38

laws of reflection state that:

Answer 38

a. incident ray, reflected ray, normal lie in the same plane. b. angle of incidence is equal to the angle of reflection.

Question 39

🤍 Refraction 🤍

Answer 39

bending light rays pass an angle from medium to another

Question 40

Lenses form 📹📷

Answer 40

images by refraction.

Question 41

Dispersion 🌈

Answer 41

separating white light into a band of colors.

Question 42

Diffraction 👀

Answer 42

bending light passes through small opening.

Question 43

Interference

Answer 43

two beams of light superimposed with one another.

Question 44

Temperature

Answer 44

measure of hotness or coldness of body

Question 45

Heat

Answer 45

energy in transit from body of higher temperature to lower temperature.

Question 46

Thermal energy 🔥

Answer 46

resulting from heat flow

Question 47

Internal energy =

Answer 47

total of all energies in a substance

Question 48

wave

Answer 48

a disturbance, travels through a medium

Question 49

2 types of waves T & L

Answer 49

Transverse waves move up and down perpendicular Longitudinal waves move back and forth parallel

Question 50

Highest points of waves are called 🗻

Answer 50

crests

Question 51

Low points are called

Answer 51

troughs.

Question 52

Amplitude

Answer 52

maximum displacement

Question 53

Wavelength

Answer 53

distance between two successive crests or successive troughs. ----- ------

Question 54

Frequency

Answer 54

number of crests or troughs that pass a point per second. (Hz).

Question 55

Work

Answer 55

force is causing body to move. In equation, W = F x d SI unit of work is Nm or joule.

Question 56

Energy

Answer 56

ability to do work.

Question 57

Kinetic energy

Answer 57

energy due to motion. use the equation KE = 1⁄2 mv2

Question 58

Potential energy

Answer 58

energy due to position. use the equation PE = mgd. unit is joule.

Question 59

The kinetic energy of free falling body .

Answer 59

increases while its potential energy decreases.

Question 60

The total mechanical energy of a free falling body

Answer 60

remains the same

Question 61

The loss in potential energy

Answer 61

equals increase in kinetic energy

Question 62

Power

Answer 62

rate of doing work. In SI it is expressed in watts. 

Question 63

atom

Answer 63

smallest particle of an element.

Question 64

nucleus

Answer 64

small dense core

Question 65

diffusion 🤝

Answer 65

intermingling of the molecules

Question 66

The atomic number is also equal to

Answer 66

number of electrons.

Question 67

atomic mass or mass number is S

Answer 67

sum of an atom's protons and neutrons

Question 68

reactants

Answer 68

substances that combine

Question 69

mass of the reactants is

Answer 69

equal to the mass of the products.