Home » LET Reviewer: Biological Science Part 4
Are you looking for something?


LET Reviewer: Biological Science Part 4

Majorship LET Reviewer
Download File
Download is available until [expire_date]
  • Version
  • Download 5603
  • File Size 64kb
  • File Count 1
  • Create Date April 14 2020
  • Last Updated April 14 2020

LET Reviewer: Biological Science Part 4

Youtube

LET Reviewer Biology Part 4
51. Which hormone is insufficient in cretinism?
A. Glucagon
B. Adrenalin
C. Insulin
D. Thyroxine


52. Which of the following is both endocrine and an exocrine gland?
A. Gastric glands
B. Thyroid glands
C. Pituitary glands
D. Pancreas

53. What organ is controlled by the automatic nervous system?
A. Skeletal
B. Muscles
C. Heart
D. Both A and B

54. What do you call food in a semi-liquid form, partially digested and mixed with hydrochloric acid?
A. Gastric secretion
B. Gastric fluid
C. Mucosa
D. Chime

More from Teach Pinas:
RPMS-PPST Downloadable Materials for SY 2022-2023 (New Normal)
DepED to give action to “Loaded” teachers
Gatchalian: Raise entry-level teachers’ salaries to P30,000
President Duterte orders the grant of P10k SRI to gov’t employees

55. Which is considered the master gland due to its influence on the activity of all the other glands?
A. Thyroid
B. Adrenal
C. Pituitary
D. Parathyroid

56. Which part of the brain is responsible for intelligence, memory and learned behavior?
A. Cerebellum
B. Cerebrum
C. Medulla
D. Thalamus

57. Which of these materials is not a major component of the plasma membrane?
A. Phospholipids
B. Glycoprotein

C. Proteins
D. DNA

58. Which form of RNA delivers information from DNA to be used in making protein?
A. Messenger RNA
B. Ribosomal RNA
C. Transfer RNA
D. All of the above



59. Which of the following is not a type of cell?
A. Bacterium
B. Amoeba
C. Sperm
D. Virus

60. Which property of water is probably MOST important for the functioning of organisms at the molecular level?
A. Cohesion and high surface tension
B. High specific heat
C. High heat of vaporization
D. Versatility as a solvent

61. Which of the following statements is true of diffusion?
A. It requires an expenditure of energy by the cell
B. It is a passive process
C. It occurs when molecules move from a region of lower concentration to one of higher concentration
D. It requires a membrane

62. Which of the following is FALSE in comparing prophase I of meiosis and prophase of mitosis?
A. The chromosomes condense in both
B. Tetrads form in both
C. The nuclear envelope disassembles in both
D. A spindle forms in both



63. Which are small, irregularly-shaped cells without nuclei but are rich in ATP?
A. Leukocytes
B. Thrombocytes
C. Lymphocytes
D. Erythrocytes

64. What branch of Biology is involved when one is studying the characteristic structure and functions of all kinds of cells?



A. Cytology
B. Morphology
C. Physiology
D. Histology

65. Which part of seed appears as a scar which marks the entry of the pollen tube during fertilization?
A. Seed leaf
B. Cotyledon
C. Testa
D. Hilum

66. Which type of tissue is responsible for the secondary growth in stems and roots of vascular plants?
A. Meristematic cells
B. Cambium
C. Palisade layer
D. Epidermis

67. Which biome grows tropical grassland with scattered individual trees and larger herbivores?
A. Tundra
B. Rain forest
C. Grassland
D. Savanna



68. What do you call that process in birds wherein they shed off features at least once a year?
A. Skinning
B. Molting
C. Furrowing
D. Migrating

69. What chemical controls metamorphosis among insects?
A. Enzymes
B. Estradol
C. Pheromones
D. Ethylene

70. Which of the following makes up the plant cell wall?
A. Nucleic acid
B. Cellulose
C. Protein
D. Lipids

71. Which of the following is not true of fungi?
A. Some are pathogenic
B. Some are photosynthetic
C. Some are edible
D. Form symbiotic relation with algae

72. Which of the following is not true of plants?
A. Some are pathogenic
B. Some are photosynthetic
C. Some are edible
D. Form symbiotic relation with algae

73. Which of the following is considered multi-cellular?
A. Embryo
B. Fertilized egg
C. Egg cell
D. Sperm cell

74. What hormone promotes the growth of the uterine lining for the implantation of the embryo?
A. Lactogenic hormone
B. Progesterone
C. Testosterone
D. Oxytocen

75. Which of the following pair of organisms are closely related?
A. Spider and mosquito
B. Frog and crocodile
C. Man and monkey
D. Ants and aphids

76. What does it mean if the blood pressure of human is 110/70?
A. The systolic pressure is 70
B. The diastolic pressure is 70
C. The pulse rate is 110 beats per minute
D. Both B and C

77. Which of the following happens when man exhale?
A. The residual volume of the lungs decreases
B. The diaphragm contracts
C. The volume of the thoracic cavity decreases
D. The lung contracts

78. Which of the following regulate breathing?

A. RBC concentration
B. Number of haemoglobin
C. Hormone level in blood
D. CO2 and O2 concentration and pH level sensors

79. Which of the following has the lowest velocity of blood flow
A. Veins
B. Arteries
C. Capillaries
D. Arterioles

80. How many carbon atoms can each pyruvic acid supply into the Kirb’s cycle?
A. 8
B. 6
C. 4
D. 2

81. .How many oxygen is required each time to a molecule of glucose is completely oxidized through aerobic respiration?
A. 3
B. 6
C. 12
D. 24
82. Which of the following will not be accepted by glycolysis for catabolism?
A. Starch
B. Glycerol
C. Fatty acid
D. Sucrose

83. Which of the following characteristic is common between echinoderms and cnidarians?
A. They are both radically symmetrical
B. They have segmented bodies
C. Both have stinging cells
D. They have three embryonic tissue layers

84. Which of the following is true of Phylum Chordata? 1-Presence of notochord that provides skeletal support
2- Pharyngeal slits that have become modified for gas exchange
3- Dorsal hallow nerve cord that develops into the central nervous system
A. 2 and 3
B. 1 and 2
C. 1 and 3

D. 1, 2 and 3

85. Which of the following cannot be associated with fungi?
A. Absorptive nutrition
B. Decomposers
C. Autotrophs
D. Spore production

90. What is most likely happen when a species cannot adapt to the changes in the environment?
A. It will be transform to another form
B. It will become extinct
C. It will be isolated
D. It will grow old

91. What term is used to describe the released of matured egg cell from the ovary?

A. Fertilization
B. Copulation
C. Ovulation
D. Germination

92. Which of the following blood cells is responsible for blood clotting?
A. Erythrocytes
B. Leukocytes
C. Thrombocytes
D. Neutrophils

93. Where does ectopic pregnancy occur?
A. Uterus
B. Ovary
C. Cervix
D. Fallopian tube

94. Why is cell membrane semi permeability important?
A. It is important in determining the size of the cell
B. It controls the kind of substances that enters and leaves the cell
C. It controls the pressure and energy gradient
D. It allows the molecules to diffuse freely in and out of the cell

95. What theory of evolution accounts for snake’s disappearance of legs and development of giraffe’s long neck?
A. Theory of use and disuse
B. Theory of natural selection
C. Theory of chromosomal change
D. Theory of action and interaction

96. Which of the following is an exocrine gland?
A. Plastids and pigments
B. Asters and centrioles
C. Chloroplasts and vacuoles
D. Cell wall and cell membrane

97. Which of the following is an exocrine gland?
A. Thyroid gland
B. Salivary gland
C. Pituitary gland
D. Adrenal gland

98. Which of the following is not an accessory organ of digestion?

A. Liver
B. Pancreas
C. Salivary gland
D. Adrenal gland

99. What hormone stimulates the development of male secondary sex characteristics?
A. Estrogen
B. Prolactin
C. Testosterone
D. Progesteron

100. Which of the following parts performs both as reproductive and urinary functions in males?
A. Ureter
B. Testes
C. Urethra
D. Scrotum

Download this LET Reviewer as well as the answer keys from the button above. If the download button is not working, please leave a comment below and we will fix it as soon as possible.

For the complete list of LET Reviewers, you may follow this link: Downloadable LET Reviewers


Disclaimer:
TEACH PINAS is not affiliated, associated, endorsed by, or in any way officially connected to any government organization. All the information on this website is published in good faith and for general information purpose only. We, the admins/staff, do not claim any ownership of some content posted here unless otherwise stated. If you own rights to those and do not wish them to appear on this site, please contact us via e-mail: [email protected] and we will take necessary actions ASAP. TEACH PINAS does not make any warranties about the completeness, reliability, and accuracy of this information. Any action you take upon the information you find on this website (www.teachpinas.com), is strictly at your own risk. TEACH PINAS will not be liable for any losses and/or damages in connection with the use of our website. Read more...
Enter your email address below to get updates via email:
Loading

Add Comment

Click here to post a comment

error: Sorry, content is protected!