Cells
True or False
A cell is the smallest unit of living-thing
True
True of False
There are 5 major group in the vertebrate animal kingdom.
True
Briefly define diffusion.
Random movement of particles.
What is a biological molecule?
Substances of living origin
What are the enzymes made from?
Protein
The organelles that regulates the movement of substances in and out of the cells
cell membrane
What is the group of animals that has jointed legs and hard exoskeleton body.
Arthropods
Gas, Liquid and Solid, which of the states the particle diffuse the fastest?
Gas
What are the 3 major food group.
Carbohydrate, Protein and Lipids
What is a catalyst?
Substance that speeds up chemical reaction without changing itself.
Name 2 specialized cell from plant.
Root hair cell, Xylem, Phloem, Palisade cell
What is the 2 major groups of flowering plant?
Monocotyledon and Dicotyledon
What is active trasnport?
Movement of particles from a low concentration region to high concentration region against a concentration
What are the test for protein, carbohydrate and lipids?
Biuret test, Iodine test and emulsification.
Name the enzymes that digest starch.
Amylase
Name 2 adaptation of red blood cells to carry its function.
Biconcave shape
Absence of nucleus
Contains hemoglobin
List 2 observable characteristic feature to distinguish monocotyledon and dicotyledon?
Define Osmosis in detail. Include important keywords.
Movement of water form high water concentration region and to a low water concentration region through a partially permeable membrane.
Describe the procedure of benedict test until its results.
Mix sample with water and benedict solution. Place the mixture in water bath. Observe color change from blue to brick-red for positive results.
The dent found in an enzymes where substrate attach itself.
Active site
If a drawing of an insect specimen is 12cm in length that is magnify 4.8x. What is the actual length of the insect in mm? (Show working)
25mm
What are the 3 basic structure of a virus?
DNA or RNA, Envelope and Protein coat
Predict what happened when you place red blood cell into a pure water solution.
High water potential in the surrounding compare to he cell. Water moves inside the red blood cell though osmosis. Red blood cell burst because no cell wall to support the structure.
What are the 3 basic structure in a nucleotides?
Sugar group, phosphate group and amino group.
What are the effect of increasing temperature to a enzymes?
Enzyme activity increase, eventually denatured.