MIDTERM ASSESSMENT
GRADE 10 - SCIENCE
Instructions: Read each question carefully and shade the correct answer in the answer sheet
provided to you. Do not write anything on this test questionnaire.
1.
Which part of the nervous system is associated with the involuntary control of body
movements?
A. Central Nervous System
2.
B. Peripheral Nervous System
D. Autonomic Nervous System
It plays an essential part in the female reproductive system because it is the site of egg
implantation.
A. Oviduct
3.
C. Somatic Nervous System
C. Uterus
B. Ovary
D. Vagina
How does the sensory neuron functions after the sensory organ perceives a stimulus? A.
It carries impulse from sensory organs to the brain.
B. It carries impulse to the specific effector.
C. It processes the information perceived by the sensory organ.
4.
D. It commands an effector to react or response.
What do you call a hormone that stimulates the ovaries to release estrogen?
A. Follicle Stimulating Hormone
5.
B. Gonadotropin-releasing Hormone
D. Progesterone
These hormones are needed in order to produce milk by sucking of an infant at the breast
of the mother.
A. Prolactin and Estradiol
6.
C. Luteinizing Hormone
C. Prolactin and Oxytocin
B. Oxytocin and Progesterone
D. Estradiol and Estrogen
Which of the following is the correct order of events during the menstrual cycle?
A. Thickening of lining of the uterus → Menstrual blood discharge → Egg develops →
Ovulation occurs.
B. Ovulation occurs → Menstrual blood discharge → Egg develops → Thickening of
lining of the uterus.
C. Menstrual blood discharge → Egg develops → Ovulation occurs → Thickening of
lining of the uterus.
7.
D. Menstrual blood discharge → Egg develops → Thickening of lining of the uterus →
Ovulation occurs.
Which is the correct sequence of the male reproductive organs when the sperms move from
the testis to the outside of the body?
I. Epididymis
II. Urethra
A. I, III, IV, II
8.
III. Vas deferens
IV. Seminal vesicle
C. IV, I, II, III
B. II, III, I, IV
D. III, I, IV, II
What might happen to the condition of the sperm cells in the absence of bulbourethral
gland?
A. The sperm cells will die since bulbourethral gland is responsible in the secretion of
fluid where sperms can swim actively.
B. The sperm cells locomotion becomes more active because the semen reduces thick
mucus that comes from bulbourethral gland.
C. The sperms will die since bulbourethral gland secretes a thick and clear mucus that
neutralizes traces of acidic urine in the urethra.
9.
D. The sperm becomes less active because bulbourethral gland secretes slightly
alkaline fluid that helps sperm cells to swim faster.
How does the pituitary gland control the function of the testes?
A. The brain sends signals to the pituitary gland to release gonadotropic substances
such as follicle stimulating hormone and luteinizing hormones for the production
of sperm cells and testosterone.
B. The brain receives signals from the pituitary gland after producing androgen and
testosterone hormones.
C. The pituitary gland is regulated by cerebrum to release gonadotropic substances
such as luteinizing hormones and follicle stimulating hormones in order to produce
semen.
D. The brain and pituitary glands directly controls the prostate gland and
bulbourethral gland to produce sperms and semen.
10. It is the monthly changes that takes place in a female reproductive system discharging
blood and other materials from the lining of the uterus.
A. Amenorrhea
C. Menstruation
B. Menopausal
D. Pregnancy
11. Which of the following hormones is responsible in initiating the maturation of the follicles,
converts ruptured follicles into corpus luteum and causes the secretion of progesterone.
A. Follicle Stimulating Hormone
C. Progesterone
B. Luteinizing Hormone
D. Gonadotropin-releasing Hormone
12. Menstrual cramps are the results of a strong contraction of uterine wall that occur before
and during menstruation. What could possibly be the cause of these cramps?
A. Excessive secretion of prostaglandins.
B. Absence secretion of estradiol.
C. Insufficient secretion of oxytocin.
D. Abnormal secretion of estrogen.
13. During the first 14 days of the cycle, the young egg in the ovary begins to mature. Assume
that there is no sperm is presents in the process, what would happen to the matured egg?
A. The ovary itself releases estrogen through follicle stimulating hormone.
B. The egg moves through the oviduct and enters the uterus.
C. The egg will attach to the uterus.
D. The egg is lost breaking the uterine lining and leave the vagina.
14. What can you infer about a 53 years old woman who’s experiencing mood swings,
wrinkling of skin, few and irregular periods and has low estrogen level?
A. She is suffering a dysmenorrhea.
B. She is having an ectopic pregnancy.
C. She is showing symptoms of menopausal stage.
D. She is having a cervical cancer.
15. It is the state reached when each part of the body functions equilibrium with other parts.
A. Balance
C. Hormonal Change
B. Homeostasis
D. Feedback Mechanism
16. To achieve homeostasis, the nervous and endocrine systems maintain a normal range of
the following variables except one:
A. Amount of metabolic wastes in the cell.
B. Production of stem cells.
C. Hormones in the blood.
D. Blood calcium level.
17. Select the correct event showing the coordination of nervous, endocrine and reproductive
systems during copulation.
I. The brain processes physical stimulation.
II. The message is transmitted to endocrine system allowing sex glands to function.
III. The sex organs perform their corresponding biological functions.
IV. Sex glands in the endocrine system produce secretions that are necessary for
reproduction.
A. I, II, III, IV B. I,
III, II, IV
C. I, IV, III, II
D. I, III, IV, II
18. What will happen to the mature egg if fertilization would take place?
A. The egg and the blood will both be lost together with the thickened uterine linings.
B. Pregnancy will take place, and the egg will attach to the uterus, and continues to
grow inside the womb.
C. The egg will travel back to the ovary through the oviduct.
D. The egg will attach to the thickened uterine lining for another fertilization process.
19. Andrea was tasked to clean their garden at ten o’clock in the morning where the heat of
the sun strikes her a lot. How do the nervous and endocrine systems respond to an
increase in environmental temperature to achieve homeostasis?
A. Her body will release sweat to lower the temperature of the internal organs and to
cool her body down.
B. Her nervous and endocrine systems will let her sneeze to release the heat inside her
body
C. Her muscles will contract as a response to the high level of temperature.
D. Her body will become weak and tired due to too much heat of the sun.
20. The DNA and RNA are made up of three components except one:
A. Nitrogen base
C. Proteins
B. Phosphate group
D. Sugar
21. During replication, which nitrogen bases can fit together to make base pairs?
A. Adenine and Thymine fit together, and Guanine and Cytosine fit together
B. Adenine and Cytosine fit together, and Guanine and Thymine fit together
C. Thymine and Uracil fit together, and Guanine and Cytosine fit together
D. Adenine and Uracil fit together, and Cytosine and Guanine fit together
22. Which of the following statements is false about the structural difference between DNA
and RNA?
A. DNA is doubles-stranded, while RNA is single-stranded.
B. The nitrogen bases in DNA are Adenine (A), Guanine (G), Thymine (T), and Cytosine
(C), while in RNA are Adenine, Guanine, Cytosine and Uracil (U).
C. The sugar in DNA is deoxyribose while in RNA is ribose
D. The nitrogenous bases in DNA are Adenine, Uracil, Cytosine, and Guanine and in
RNA are Adenine, Thymine, Cytosine, and Guanine.
23. For item 23, refer to Amino Acid Chart.
Which of the following order of bases shows the correct sets of codes?
A. TGA - UGU - ACG - Leucine
B. CAG - GUC - CAG - Valine
C. GGT - UCU - GGA - Proline
D. ATG- UAC - AAG - Methionine
24. Which of the following sequences of DNA bases is complementary to the sequence: ATCGTG-CCC
a. TAG-CAC-GGG
c. AUG-CAC-GGG
b. TAG-TAT-GGG
d. AUG-TAT-GGG
25. What are the types of RNA?
A. messenger RNA and ribosomal RNA only
B. messenger RNA and transfer RNA only
C. messenger RNA, ribosomal RNA, and transfer RNA
D. ribosomal RNA and transfer RNA only
26. Most genes DNA hold instructions for the cell to make a specific _____.
a. carbohydrate
c. lipid
b. chromosome
d. protein
27. The codes for the production of proteins need to leave the nucleus of the cell. This can be
accomplished by using _______to take messages out of the nucleus.
a. DNA
c. amino acids
b. RNA
d. lipids
For item 28 – 31, fill in the correct mRNA bases by transcribing the bottom DNA strand.
Translate the mRNA codons.
28.
29.
30.
31.
32. The codon for tryptophan is
.
33. For leucine, there are
different codons.
34. The codon GAU is for
.
35. In a stop codon, if the second base is G, the first and third bases are ____ and ___.
Instruction: Given the list of amino acids, determine the sequence of bases in the codon of the
mRNA that codes for these amino acids. Use the table for the Genetic Code.
36. Serine
37. Isoleucine
38. Tryptophan
39. Valine
40. Glycine
Instructions: Complete the paragraph below by writing the correct word. Choose your answer
from the box provided.
The 41.
system is the major control system to maintain
42.
of
provides monitoring, response, and 43.
all systems in the human body and other organisms. It functions from the tiny level of individual
cells to affecting the whole body.
Constantly monitoring conditions and watching for changes are done by the
44.
inside and outside of the body. When a body system leaves a set point
and falls outside its 45.
range, signals are sent through the nervous
system which trigger 46.
to bring the system back into the normal
range of functioning. This process maintains homeostasis. For example, thermoreceptors and
mechanoreceptors in the skin sense changes in 47.
and
pressure,
respectively. Then, signals sent from them to the 48.
make it possible to
detect situations that could cause injury or death. Furthermore, nerves make muscles contract
which moves the 49.
of the skeleton, making it possible to evade
predators. This ability to perceive the environment and reacting to it is critical
homeostasis in the 50.
to maintain
.
Options:
Nervous
Endocrine
Body
Regulation
Receptors
Responses
Homeostasis
Normal
Brain
Temperature
Bones