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COLLEGE ADMISSION CHALLENGE REVIEW (BIOLOGY). MR. JAIME S. DE VERA JR. B.S. BIOLOGY, B.S.ED BIOLOGY, M.A.ED BIOLOGY Head Teacher II / College Instructor. KEY TO SUCCESS. A = 1 J = 10 B = 2 K = 11 C = 3 L = 12 D = 4 M = 13 E = 5 N = 14 F = 6 O = 15 G = 7 P = 16
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COLLEGE ADMISSION CHALLENGE REVIEW (BIOLOGY) MR. JAIME S. DE VERA JR. B.S. BIOLOGY, B.S.ED BIOLOGY, M.A.ED BIOLOGY Head Teacher II / College Instructor www.sirjamesdeverajr.weebly.com
KEY TO SUCCESS A = 1 J = 10 B = 2 K = 11 C = 3 L = 12 D = 4 M = 13 E = 5 N = 14 F = 6 O = 15 G = 7 P = 16 H = 8 Q = 17 I = 9 R = 18 S = 19 T = 20 U = 21 V =22 W = 23 X = 24 Y = 25 Z = 26 www.sirjamesdeverajr.weebly.com
SCOPE OF REVIEW 1ST DAY • CELL BIOLOGY • BIOENERGETICS • GENETICS • PROTEINSYNTHESIS • EVOLUTION • TAXONOMY • PLANT BIOLOGY • ANIMAL BIOLOGY • HUMAN BIOLOGY • ECOLOGY 2ND DAY www.sirjamesdeverajr.weebly.com
QUESTION NO. 1 Which of the following statements about mitochondria is NOT CORRECT? • They serve as sites for cellular respiration. • They are enclosed by a double membrane • They are the sites where most of the cell’s is produced • They are found in animal cells only; plant cells have chloroplast instead • They are found in eukaryotic cells but not in prokaryotic cells www.sirjamesdeverajr.weebly.com
The correct answer is (D) • Mitochondria are cellular organelles bound by double membranes. They are sites where respiration occurs, resulting in the production of ATP. Therefore, they are the main sites of energy production for the cell. Both plant and animal cells contain mitochondria, as do most eukaryotic cells. Prokaryotic cells lack membrane-bound organelles and an organized nucleus. www.sirjamesdeverajr.weebly.com
QUESTION NO. 2 Which of the following is NOT CORRECT about the cell structure? • Plant cells have cell walls, whereas animal cells do not. • Ribosomes are the main sites of energy production for the cell. • Plant cells have chloroplast, whereas animal cells do not • Lysosomes function in the digestion of cellular waste products. • Many cellular organelles are interrelated through an endomembrane system. www.sirjamesdeverajr.weebly.com
The correct answer is (B). • Ribosomes serve as sites for protein synthesis in the cell. Mitochondria are the main sites of cellular energy production. www.sirjamesdeverajr.weebly.com
QUESTION NO. 3 What would happen to a human red blood cell if it was placed in distilled water? • It would shrivel • It would plasmolyze. • It would lyse. • It would dehydrate. • It would not be affected. www.sirjamesdeverajr.weebly.com
The correct answer is (C). • The solute concentration inside a human red blood cell is greater than that of distilled water. If such a cell was placed in distilled water, the water concentration outside the cell would be greater than the water concentration inside the cell, and the cell would take up water by osmosis. Animal cells do not have cell walls to prevent unlimited expansion, thus the cell would lyse (swell until it burst). www.sirjamesdeverajr.weebly.com
QUESTION NO. 4 Which pair does NOT represent a correct relationship? • fat ; lipid • starch ; polysaccharide • starch ; carbohydrate • sugar ; carbohydrate • enzyme ; lipid www.sirjamesdeverajr.weebly.com
The correct answer is (E). • Enzymes are one type of protein. Lipids include fats, waxes, phospholipids, and steroids that are insoluble in water. Both sugar and starch are carbohydrates. Simple, single unit sugars such as glucose are monosaccharides. Starch is composed of long chains of glucose molecules and, thus forms a more complex carbohydrate known as polysaccharide. www.sirjamesdeverajr.weebly.com
QUESTION NO. 5 Which of the following statements is CORRECT? • The product of transcription is DNA. • The product of transcription is mRNA. • The product of transcription is a polypeptide. • The product of translation is mRNA. • The product of translation is DNA. www.sirjamesdeverajr.weebly.com
The correct answer is (B). • Transcription is the synthesis of RNA from a DNA template. Translation is the synthesis of a polypeptide using the genetic information encoded in an mRNA molecule. It involves the conversion of a nucleotide “language” to an amino acid “language”. www.sirjamesdeverajr.weebly.com
QUESTION NO. 6 Identify the CORRECT eukaryotic cell cycle. • G1 to S to G2 to M to cytokinesis • G1 to G2 to M to S to mitosis • G1 to G2 to S to M to karyokinesis • S to G1 to G2 to M to cytokinesis • G2 to M to S to G1 to cytokinesis www.sirjamesdeverajr.weebly.com
The correct answer is (A). • Following cytokinesis, the cell that continues in the cell cycle immediately goes through a growth phase (G1), followed by a phase that involves continued growth as well as replication of the DNA (S), followed by continued growth and preparation for mitosis (G2) after which mitosis – karyokinesis- occurs (M), often (but not always) ending with cytokinesis or dividing off of the cytoplasm between the two new daughter cells. www.sirjamesdeverajr.weebly.com
Plant cell V.S. Animal cell www.sirjamesdeverajr.weebly.com
QUESTION NO. 7 Which of the following stages of the cell cycle occurs immediately prior to mitosis? • G1 • G2 • S • M • cytokinesis www.sirjamesdeverajr.weebly.com
QUESTION NO. 8 In which phase do chromosomes replicate? • Interphase • Prophase • Metaphase • Anaphase • Telophase www.sirjamesdeverajr.weebly.com
The correct answer is (A). • During interphase, which would include phase G1 to S to G2, the cell replicates its chromosomes. Specifically, it prepares for this in G1, it follows through with the replication in S, and it prepares for mitosis in G2. Choices (B) through (E) are the phases of mitosis. By this time, the chromosomes must have already been replicated. www.sirjamesdeverajr.weebly.com
Interphase – S Stage • Synthesisstage • DNAis copied or replicated Two identical copies of DNA Original DNA www.sirjamesdeverajr.weebly.com
