1. The circulatory system of a whale is considered an organ system because nis composed of different A. cells. B. tissues. C. organs. E. heart. 2. Which of the following lists the terms from simplest to most complex? A. cells, organs, tissues, organ systems, organism B, organs, organ system, organism, cells, tissues C. tissues, organs, organ systems, organism, cells D, cells, tissues, organs, organ systems, organism 3, The smallest unit of life is aln) A tissue. B. organ. C. cell. D. species. transforms solar energy into chemical energy 4. The process of B, homeostasis C. respiration D. photosynthesis 5. Which of the following is matched incorrectly? A. brain organ B. neuron cell C skin organ D. gene organelle living things? 6. Which of the following is not one of the most common elements in A, carbon B. oxygen C, hydrogen D. iron 7 Glucose, CHizo. is best described as A) an element B) an a compound DJan ion isotope Solution Answer: (1) C The circulatory system of a whale is considered an organ system because it is composed of different organs. (2) D Cells, tissues, organs, organ system, organism (Simplest to more complex). (3) C The smallest unit of life is cell. (4) D The process of photosynthesis transforms solar energy into chemical energy. (5) D Gene is not an organelle but is a short portion of DNA which encodes a particular protein. (6) A Carbon is the most abundant element in living organisms. (7) C Glucose is an organic compound composed of carbon, hydrogen and oxygen. (8) A An element that has electrical charge is called ion. (9) B Ionic bonds are formed by transfer of electrons between atoms. (10) B Oxygen is an element. (11) C Deoxyribose is a component of DNA. (12) A Digestion of sucrose results in 2 monomers. (13) B A fat is formed when three fatty acids join a glycerol by a dehydration reaction. (14) B Parts W and Z are hydrophilic since they lie outside the plasma membrane. (15) B Cell wall helps in maintaining cell shape. (16) D It represents cell wall (As evident from the image and its not very clear) (17) B Prokaryotic cell does not have a membrane bound nucleus. (18) B Mitochondria is the site of cellular respiration and produces ATP. (19) A Both chloroplast and mitochondria have their own DNA. (20) C Stack of thylakoids are called grana. (21) A Isotonic solutions have the same concentration. (22) C ATP releases energy when phosphate is removed. (23) C The cell wall protects the cell from bursting in a hypotonic solution. (24) C Solar energy is captured by chloroplasts for photosynthesis. So, solar energy, chloroplast, mitochondria. (25) B The part of the enzyme into which the substrate fits is the active site..

1. 1. The circulatory system of a whale is considered an organ system because nis composed of
different A. cells. B. tissues. C. organs. E. heart. 2. Which of the following lists the terms from
simplest to most complex? A. cells, organs, tissues, organ systems, organism B, organs, organ
system, organism, cells, tissues C. tissues, organs, organ systems, organism, cells D, cells,
tissues, organs, organ systems, organism 3, The smallest unit of life is aln) A tissue. B. organ. C.
cell. D. species. transforms solar energy into chemical energy 4. The process of B, homeostasis
C. respiration D. photosynthesis 5. Which of the following is matched incorrectly? A. brain
organ B. neuron cell C skin organ D. gene organelle living things? 6. Which of the following is
not one of the most common elements in A, carbon B. oxygen C, hydrogen D. iron 7 Glucose,
CHizo. is best described as A) an element B) an a compound DJan ion isotope
Solution
Answer:
(1) C
The circulatory system of a whale is considered an organ system because it is composed of
different organs.
(2) D
Cells, tissues, organs, organ system, organism (Simplest to more complex).
(3) C
The smallest unit of life is cell.
(4) D
The process of photosynthesis transforms solar energy into chemical energy.
(5) D
Gene is not an organelle but is a short portion of DNA which encodes a particular protein.
(6) A
Carbon is the most abundant element in living organisms.
(7) C
Glucose is an organic compound composed of carbon, hydrogen and oxygen.
(8) A
An element that has electrical charge is called ion.
(9) B
Ionic bonds are formed by transfer of electrons between atoms.
(10) B
Oxygen is an element.
(11) C

2. Deoxyribose is a component of DNA.
(12) A
Digestion of sucrose results in 2 monomers.
(13) B
A fat is formed when three fatty acids join a glycerol by a dehydration reaction.
(14) B
Parts W and Z are hydrophilic since they lie outside the plasma membrane.
(15) B
Cell wall helps in maintaining cell shape.
(16) D
It represents cell wall (As evident from the image and its not very clear)
(17) B
Prokaryotic cell does not have a membrane bound nucleus.
(18) B
Mitochondria is the site of cellular respiration and produces ATP.
(19) A
Both chloroplast and mitochondria have their own DNA.
(20) C
Stack of thylakoids are called grana.
(21) A
Isotonic solutions have the same concentration.
(22) C
ATP releases energy when phosphate is removed.
(23) C
The cell wall protects the cell from bursting in a hypotonic solution.
(24) C
Solar energy is captured by chloroplasts for photosynthesis. So, solar energy, chloroplast,
mitochondria.
(25) B
The part of the enzyme into which the substrate fits is the active site.