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WorksheetsPage 1
Total questions: 40
Worksheet time: 20mins
Which hormone stimulates the development of female secondary sex characteristics?
Testosterone
Estrogen
Androgen
FSH
What gland is being stimulated during exercise?
Adrenal
Parathyroid
Pituitary
Thyroid
How does progesterone support pregnancy?
It stimulates egg production
It prepares and maintains the uterine lining
It causes menstruation
It produces sperm cells
Which of the following glands produce hormones that controls the heart rate and breathing in times of emergency?
Adrenal
Pancreas
Pituitary
thyroid
Which situation best demonstrates the importance of hormonal balance in reproduction?
Increased heart rate during exercise
Failure of ovulation due to lack of LH surge
Sweating on a hot day
Rapid response to pain
A male with low testosterone shows delayed development of secondary sex characteristics. Which evaluation best supports this observation?
Testosterone has no role in physical development
Testosterone influences male reproductive traits
Estrogen controls male traits
Progesterone causes muscle growth
Which system mainly regulates the menstrual cycle?
Endocrine
Respiratory
Circulatory
Skeletal
An egg may be released from the ovary through a process called
Dilation
Fertilization
Gestation
Ovulation
What is considered as the ovulation day for regular menstrual cycle?
1st day
14th day
20th day
28th day
Which hormone thickens uterine lining (endometrium) in preparation for implantation, and inhibits FSH and LH?
GRH
FSH
LH
Progesterone
If fertilization does NOT occur, what happens to progesterone levels?
They increase continuously
They remain constant
They decrease, causing menstruation
They trigger ovulation
The autonomic nervous system is associated with the involuntary control of body movements. It has two subdivisions: sympathetic and parasympathetic. The parasympathetic nervous system will be activated in which situation below?
Aries ran fast when it suddenly rained
Joel is nervous for his presentation
Maria is sleeping peacefully after a long day
Leo is being chased by a dog
Which part of the brain helps keep your balance, so you don’t just fall or stumble while walking?
Cerebellum
Medulla oblongata
Pituitary gland
Spinal cord
Instructions from the brain to the target organs are carried by ________.
Receptors
Neurons
Sense organs
Hormones
A person enters a cold room and begins to shiver. How does this demonstrate nervous system coordination?
Thermoreceptors detect cold, send signals to the brain, which triggers muscle contractions to generate heat
The muscles automatically contract without any signals
The digestive system warms the body
Hormones directly cause shivering without nervous system involvement
Cerebrum is the largest part of the brain responsible for ________.
controlling heartbeat and breathing
maintaining balance and coordination
thinking, memory, and voluntary actions
regulating hormones
What are the two process of protein synthesis?
Transcription and Translation
Transmission and Translocation
Transcribing and Translation
Transcription and Translocation
Given the DNA sequence AATGCCAAG. What is the complementary bases of this sequence?
ATCGCAAAG
TTACGGTTC
AATCCGTTTC
TTGCAATTC
Which of the following is TRUE from the following statements?
RNA and DNA consist of 6 carbon sugar.
RNA has one strand while DNA has two strands.
DNA has uracil while RNA has thymine.
DNA is located in cytoplasm while RNA is in the nucleus.
Given the DNA sequence TAC-GCA-TTA, what would be the corresponding RNA sequence?
AUG-GCU-AAU
ATG-CGT-AAT
UAC-GCA-UUA
TAG-GCA-TTA
In DNA replication, which enzyme adds new nucleotides to the existing strand?
Ligase
Primase
SSB
DNA Polymerase
Which of the following is the role of the RNA in protein synthesis?
It stores genetic information permanently in the cell
It carries genetic instructions from DNA to the ribosomes
It provides energy for the cell
It breaks down old proteins into amino acids
What is a mutation?
The normal process of cell division
A change in the DNA sequence
The production of proteins
The replication of healthy cells
Which of the following is not a mutagen?
Alcohol and drugs
Cigarette smoke
Radiation
Vitamins
The original strand of DNA looks like this ACGTCTCGA, the mutated strand looks like this TCTACGCGA. What type of mutation is this?
Deletion
Insertion
Translocation
Inversion
Down syndrome is caused by ________.
Extra copy of chromosome 18
Deletion of short arm in chromosome 21
extra copy of chromosome 21
Missing X chromosome in number 23
Normal Gene: ABCDEFG Mutated Gene: ABCDE. What type of mutation is being shown?
an insertion
an inversion
a deletion
a duplication
Where can most fossils be found?
Black soil
lava flows
Granite rock
Sedimentary rock
An adaptation promotes ________.
chance to survive
chance to reproduce
chance to survive and reproduce
None of the above
This anatomical feature or behavior that no longer seem to have purpose in the current form of an organism.
Homologous
Analogous
Vestigial
Species
Why is DNA comparison important in evolution?
It shows diet
It shows genetic relationships
It measures size
It predicts extinction.
Evolution happens due to:
Mutation and natural selection
Digestion
Respiration
Mutation and natural selection
Which organisms are favored by natural selection?
has the weakest characteristic
has the best adapted characteristic
Has the largest population size
Has the oldest ancestry
Why is variation important for evolution?
It prevents reproduction
It increases survival chances
It causes extinction
It stops adaptation
He was a private naturalist and voyager who became the father of evolution.
August Weismann
Jean Baptiste de Lamarck
Charles Darwin
Charles Jacques
Which of the following kind of adaptation techniques allows the organism to be unnoticed and to hide from its predators by blending in with the surroundings?
Camouflage
Mimicry
Hibernation
Migration
The following are harmful to biodiversity, EXCEPT:
Converting farmlands to residential communities
Using insecticide sprays to kill mosquitos
Using recyclable materials in creating decorations
Cutting trees to be used as drift woods for orchids
A person breeds guinea pigs in a cage. After a few generations, the breeder observes that the guinea pigs are more aggressive towards each other, the young are less healthy, and more guinea pigs die. What do you think will happen to the population of the guinea pigs?
The population will remain the same.
The population will increase.
The population will decrease.
The population will not be affected.
Which of the following causes a decreasing wildlife population in most of the places in our country?
Loss of limiting factor
Loss of natural disturbances
Loss of habitat
Loss of carrying capacity
A pest destroying corn infected Barangay Masagana last May. It strikes and harms hundreds of corn plants. What would happen to the corn population in the field?
The corn population would infinitely increase.
The corn population would be stable.
The corn population would increase.
The corn population would decrease.
