HW Questions
One characteristic of all living organisms is that they ___
(1) Make food
(2) Live on land
(3) Maintain homeostasis
(4) Move from place to place
Answer: (3) Maintain Homeostasis
Which statement about cells is not true?
(1) One or more cells make up all living organisms
(2) Cells carry on basic life functions of living organisms
(3) Cells contain structures that carry on life functions
(4) Most cells cannot reproduce
Answer: (4) Most cells cannot reproduce
Current evidence indicates that ribosomes are most closely associated with ___
(1) Contraction of the cytoplasm
(2) Production of DNA
(3) Synthesis of protein
(4) Regulation of mitosis
Answer: (3) Synthesis of protein
Which word equation represents the process of photosynthesis?
(1) glucose ---> alcohol + carbon dioxide
(2) carbon dioxide + water ---> glucose + alcohol
(3) chlorophyll + water ---> glucose + alcohol
(4) glucose + oxygen ---> carbon dioxide + water
Answer: (4) glucose + oxygen ---> carbon dioxide + water
Energy for use in cells is stored in the form of ___
(1) Chemical bond energy
(2) Physical energy
(3) Heat energy
(4) Mechanical energy
Answer: (1) Chemical bond energy
Which sequence is listed in order from simplest to most complex?
(1) tissue ---> cell ---> organ system ---> organ
(2) cell ---> tissue ---> organ ---> organ system
(3) cell ---> tissue ---> organism ---> organ
(4) organism ---> tissue ---> organ ---> organ system
Answer: (2) cell ---> tissue ---> organ ---> organ system
Living things are made mostly of these four main elements:
(1) hydrogen, oxygen, nitrogen, and protein
(2) water, protein, carbohydrate, fat
(3) carbon, hydrogen, oxygen, and nitrogen
(4) glucose, salt, mineral, and base
Answer: (3) carbon, hydrogen, oxygen, and nitrogen
Mitochondria are organelles that ___
(1) Store digestive enzymes
(2) Package cell products
(3) Release energy from nutrients
(4) Manufacture cell protein
Answer: (3) Release energy from nutrients
Which factor least influences the rate of photosynthesis?
(1) atmospheric concentration of carbon dioxide
(2) time of day
(3) number of chloroplasts
(4) concentration of nitrogen in the air
Answer: (4) Concentration of nitrogen in the air
In which process do organisms transfer the chemical bond energy in organic molecules to ATP molecules?
(1) Excretion
(2) Cellular Respiration
(3) Autrotrophic Nutrition
(4) Photosynthesis
Answer: (2) Cellular Respiration
A biologist would most likely study all of the chemical activities of an organism to obtain information about the organism's ____
(1) Number of mutations
(2) Reproductive cycle
(3) Development
(4) Metabolism
Answer: (4) Metabolism
Which structure is the boundary between a living cell and its environment?
(1) Cell membrane
(2) Cytoplasm
(3) Vacuole
(4) Ribosome
Answer: (1) Cell Membrane
Which cell organelles are most closely associated with energy changes in a plant?
(1) Mitochondria and chromosomes
(2) Chloroplasts and mitochondria
(3) Chromosomes and nucleus
(4) Chloroplasts and and nucleus
Answer: (2) Chloroplasts and mitochondria
The basic raw materials of photosynthesis are ___
(1) Sugar and carbon dioxide
(2) Oxygen and water
(3) Water and carbon dioxide
(4) Oxygen and sugar
Answer: (3) Water and carbon dioxide
Energy released from cellular respiration of glucose is ___
(1) First stored within ATP
(2) Stored in the liver as fat
(3) Turned into fat
(4) Used directly for body activity
Answer: (1) First stored within ATP
Cells are to tissues as organs are to ___
(1) Organ systems
(2) Cells
(3) Genes
(4) Organelles
Answer: (1) Organ Systems
The cell nucleus functions ____
(1) In obtaining energy for the cell
(2) In the storage of digestive enzymes
(3) As the center of control for cell metabolism and reproduction
(4) In the transport of materials throughout the cell
Answer: (3) As the center of control for cell metabolism and reproduction
Which is the most accurate statement concerning protein synthesis in cells?
(1) Proteins are synthesized by mitochondria in all living cells
(2) Proteins are synthesized at the ribosomes in all living cells
(3) Proteins are synthesized at the ribosomes in plant cells only
(4) Proteins are synthesized by nuclei in animal cells only
Answer: (2) Proteins are synthesized at the ribosomes in all living cells
Which compound is formed as a common product of the process of photosynthesis?
(1) DNA
(2) Chlorophyll
(3) Sugar
(4) Carbon dioxide
Answer: (3) Sugar
The process during which energy is released from digested foods is called
(1) Cellular Respiration
(2) Chemical digestion
(3) Photosynthesis
(4) Excretion
Answer: Cellular Respiration
The ability of an organism to maintain internal stability is known as ___
(1) Metabolism
(2) Homeostasis
(3) Circulation
(4) Excretion
Answer: (2) Homeostasis
The genetic material of an animal cell is found in the ___
(1) Nucleus
(2) Cytoplasm
(3) Ribosomes
(4) Vacuoles
Answer: (1) Nucleus
In a plant cell, the synthesis of sugar compounds from inorganic raw materials occurs in the ___
(1) Cell membrane
(2) Mitochondria
(3) Nucleus
(4) Chloroplasts
Answer: (4) Chloroplasts
Which activity occurs during the process of photosynthesis?
(1) Chemical energy from organic molecules is converted into light energy
(2) Organic molecules are absorbed from the environment
(3) Organic molecules are converted into inorganic food molecules
(4) Light energy is stored as chemical energy in organic molecules
Answer: (4) Light energy is stored as chemical energy in organic molecules
What are the three essential parts of a microscope?
Answer: Head, Arm, and Base