NEW
Font size
Worksheetssains f4 (2)
Total questions: 59
Worksheet time: 53mins
Which gland is located closest to the human brain?
The thyroid
The pituitary
The adrenal
The ovaries
Your body's metabolism is controlled by the thyroid gland. What's the best synonym for "metabolism?"
The rate at which your cells use energy
Sleep cycle
Sexual maturity
Body temperature
When might your body release adrenaline?
When you're waking up from a long night's sleep
When there isn't enough calcium in your bloodstream
If you were threatened by a bully
When you've had too much to eat
People with enlarged thyroid glands develop a condition called "goiter." This is often visible as:
A growth on a person's forehead
A lump on a person's neck
A swelling in a person's abdomen
Pimples on a person's back
Type 1 diabetes is related to an imbalance in which hormone?
Insulin
Adrenaline
Melatonin
Estrogen
An organ that makes chemical substances that are used or released by the body is a:
Muscle
Gland
Glands that do not have ducts are _________ glands:
endocrine
exocrine
Endocrine glands secrete _
Hormones
Neurotransmitters
A wide range of chemical substances
What is the main function of the endocrine system?
It creates chemicals, or hormones, that are sent around the body to maintain homeostasis.
It creates electrical messages that are sent around the body to maintain homeostasis.
It maintains the correct level of oxygen in the body to maintain homeostasis.
It releases waste from the body to maintain homeostasis.
The "master gland" is known as the __________________.
thyroid gland.
adrenal gland.
pancreas.
pituitary gland.
The thyroid gland needs a type of nutrient. What is the nutrient?
calcium
iodine
vitamin c
iron
Controls secondary sexual characteristics in female , which hormone?
oestrogen
progesterone
insulin
Testosterone
Which of the following is the effect of overproduction of hormone by pituitary gland?
Dwarfism
Hypoglycaemia
Diabetes mellitus
Gigantism
What is the least effective way of dealing with a mental illness?
keeping feelings inside
telling an adult how you feel
going to the hospital
meeting with a mental health professional
Which term describes when a substance is changed from a liquid to a gas?
Condensation
Evaporation
Filtration
Precipitation
Rust, pure water and carbon dioxide are all examples of what?
Compounds
Elements
Homogeneous mixtures
Plasma
The simplest particles are called
Elements
Atoms
Compounds
Mixtures
Which of the following elements is a solid
Helium
Hydrogen
Calcium
Oxygen
_______ are atoms with the same number of protons but varying numbers of neutrons.
ions
elements
allotropes
isotopes
How many neutrons are in the given atom?
92
143
235
327
An ion is:
An atom that has gained or lost electrons
An atom that has gained or lost neutrons
An atom that has gained or lost protons
An atom that is neutrally charged
Which elements are colored red?
nonmetals
metals
metalloids
How many valence electrons does a carbon atom have?
8
4
2
6
The picture refer to the
Gambar itu merujuk kepada
Modern medicine
Perubatan moden
Traditional medicine
Perubatan tradisional
Complementary medicine
Perubatan komplementari
Homeopathy
Homeopati
Penicillin is an antibiotic. But what are antibiotics?
A dose of ionised radiation used to shrink and destroy cancerous tumours
A blend of chemicals and radiation used to treat cancerous cells
A chemical cure used to treat a specific disease without damaging healthy cells
Used to kill bacteria in the body
Which of the following statements is true about free radicals?
Free radicals take electrons from human body cells and cause changes in the structure of DNA causing cell mutations
Free radicals have excess electrons
Free radicals are produced in the body only
Free radicals are substances that are not needed by the body at all to ensure that all the processes in the body work properly
How are antioxidant substances helpful in maintaining a healthy body?
Antioxidant substances have the ability to stabilise the effects of free radicals by filling empty electrons in free radicals
Antioxidant substances have the ability to ensure that the number of free radicals is regulated by the amount needed by the body
Antioxidant substances have the ability to break down excess fat in the body
Antioxidant substances have the ability to inhibit the oxidation process in food
Which of the following statements regarding free radicals is false
Free radicals carry a single, unpaired electron
Free radicals are produced as the result of homolytic cleavage of a covalent bond
A free radical can interact with a molecule to generate a new free radical species
Free radicals do not occur naturally in the body
Fruits, vegetables, and cereal are good source of:
Antioxidents
Unsaterated fat
Saturated fat
Free radicules
Do tomatoes contain Omega 3 or antioxidant?
Omega 3
Antioxidant
Both - Omega 3 and Antioxidant
Define linear motion?
Motion for a car
Motion in a straight line
Motion which is not straight
Motion of a wind
"rate of change of displacement"
This is definition for ?
Displacement
Velocity
Acceleration
Distance
How can we find distance traveled?
calculate area under v-t graph
calculate area under a-t graph
calculate area under s-t graph
In Newtonian physics, ________________ is any motion of a body where gravity is the only force acting upon it.
kinematics
free fall
mechanics
velocity
The standard acceleration due to gravity (or standard acceleration of free fall),is the nominal gravitational acceleration of an object in a vacuum near the surface of the Earth. It is defined by standard as:
9.8 m/s.
9.8 m.
9.8 m/s2.
9.8 s.
What does it mean for an object to be in free fall?
Only air resistance acting on the object.
Gravity is the only force acting on the obejct.
Any object that is in downward motion.
Two rocks with different size and mass are dropped from the same height. Which of the rock will reach the ground first?
greater rock
smaller rock
both reach the ground at the same time
Anything with ____________ also has a gravitational pull.
mass
size
depth
light
What is weight?
how much fat is on your body
how strong you are
how strongly your body is being pulled down by gravity
when you have to stand in line
Gravity is based on an object's
mass
size
roundness
brightness
"force that pulls towards a center of mass"
gravity
mass
inertia
distance
