REVIEW

Which of the following statements best describe the term photosynthesis?

• The process by which plants make their own food in the presence of sunlight.

• When plants absorb the energy from the sun

• The process by which animals make their own food.

• How plants reproduce.

  Oxygen is created from visible sunlight during

• Kreb Cycle

• Light dependent cycle

• glycolysis

• dark cycle

Water is a polar molecule because _______

• It has charge

• It does not have a charge

• it contains two hydrogen atoms

• different parts of the molecule have slightly different charge

What is the key role of Nucleic acids?

• Instant energy

• Store and transmit Heredity information to the next generation

• Hormone buoyancy, forms cell membranes insulation energy storage

• Transport hemoglobin, immunity, chemical reactions

Which of the following is true about protein molecules ?

• The shape and folded structure of protein molecule are important in determining its functions

• The sequence of amino acids that make up a protein molecule do not affect its function.

• Protein molecules store genetic information.

• Protein molecules are made up of strands of DNA joined together by amino acid sequences

Which of the following is a source of genetic variation in sexually-reproducing organisms?

• Meiosis

• Translation

• Mitosis

• All of these

What happens during S phase of cell cycle?

• The cell's chromosomes separate.

• A.     The cell's DNA is replicated.

• The cell prepares for mitosis.

• The contents of the cell divide.

Which choice below correctly shows the base pairing rule in DNA?

• A-T , C-G

• A-C,G-T

• A-G,C-T

• A-U,C-G

  Which one of these is not true for structure of DNA & RNA

• They make us obese

• They have phosphate

• They have five carbon sugar

• They make us obese

Amino acids join together to form

• sugar

• nucleic acid

• proteins

• lipids