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Questions and Answers
What is the initial cell called from which the human body develops?
What is the initial cell called from which the human body develops?
- Spermatozoon
- Zygote (correct)
- Embryo
- Ovum
What is the watery fluid enclosing the organelles in a cell called?
What is the watery fluid enclosing the organelles in a cell called?
- Cytosol (correct)
- Centrosome
- Nucleus
- Chromatin
What is fundamental to cell survival as it controls the passage of substances into and out of the cell, regulating the intracellular environment?
What is fundamental to cell survival as it controls the passage of substances into and out of the cell, regulating the intracellular environment?
- Endoplasmic reticulum
- Cholesterol
- Nucleolus
- Plasma membrane (correct)
What consists of two layers of phospholipids with proteins and sugars embedded in them?
What consists of two layers of phospholipids with proteins and sugars embedded in them?
What is responsible for the production of ribosomes in a cell?
What is responsible for the production of ribosomes in a cell?
What is present in the cell contents, excluding the nucleus, and is made up of the cytosol and other organelles?
What is present in the cell contents, excluding the nucleus, and is made up of the cytosol and other organelles?
What is the initial structure formed from the fusion of the ovum and the spermatozoon?
What is the initial structure formed from the fusion of the ovum and the spermatozoon?
What is the characteristic of the head of a phospholipid molecule?
What is the characteristic of the head of a phospholipid molecule?
How are the hydrophilic heads of phospholipid molecules arranged in the membrane?
How are the hydrophilic heads of phospholipid molecules arranged in the membrane?
What do the hydrophobic tails of phospholipid molecules form in the membrane?
What do the hydrophobic tails of phospholipid molecules form in the membrane?
What do proteins that extend all the way through the membrane provide?
What do proteins that extend all the way through the membrane provide?
What is attached to the outside of the cell, giving it its immunological identity?
What is attached to the outside of the cell, giving it its immunological identity?
What do some membrane protein molecules act as for hormones and other chemical messengers?
What do some membrane protein molecules act as for hormones and other chemical messengers?
What are some membrane protein molecules according to page 34?
What are some membrane protein molecules according to page 34?
What is responsible for controlling the passage of substances into and out of the cell?
What is responsible for controlling the passage of substances into and out of the cell?
What is the name of the single cell resulting from the fusion of the ovum and the spermatozoon?
What is the name of the single cell resulting from the fusion of the ovum and the spermatozoon?
Which organelle in a cell is responsible for the production of ribosomes?
Which organelle in a cell is responsible for the production of ribosomes?
What is the characteristic of the head of a phospholipid molecule in the plasma membrane?
What is the characteristic of the head of a phospholipid molecule in the plasma membrane?
Which structure in a cell is fundamental to cell survival as it controls the passage of substances into and out of it, regulating the intracellular environment?
Which structure in a cell is fundamental to cell survival as it controls the passage of substances into and out of it, regulating the intracellular environment?
What is the watery fluid enclosing the organelles in a cell called?
What is the watery fluid enclosing the organelles in a cell called?
What type of molecules make up the phospholipid bilayer in the plasma membrane?
What type of molecules make up the phospholipid bilayer in the plasma membrane?
Which part of the phospholipid molecule is responsible for controlling the passage of substances into and out of the cell?
Which part of the phospholipid molecule is responsible for controlling the passage of substances into and out of the cell?
What do some membrane protein molecules act as for hormones and other chemical messengers?
What do some membrane protein molecules act as for hormones and other chemical messengers?
What is attached to the outside of the cell, giving it its immunological identity?
What is attached to the outside of the cell, giving it its immunological identity?
Which type of substances do membrane proteins that extend through the membrane provide channels for?
Which type of substances do membrane proteins that extend through the membrane provide channels for?
What is the primary function of the hydrophobic tails of phospholipid molecules in the membrane?
What is the primary function of the hydrophobic tails of phospholipid molecules in the membrane?
What is the arrangement of the hydrophilic heads and hydrophobic tails in the phospholipid bilayer?
What is the arrangement of the hydrophilic heads and hydrophobic tails in the phospholipid bilayer?
What influences the transfer of substances across the plasma membrane?
What influences the transfer of substances across the plasma membrane?
Which part of the phospholipid molecule provides a central water-repelling layer in the membrane?
Which part of the phospholipid molecule provides a central water-repelling layer in the membrane?
What is the primary function of the hydrophobic tails of phospholipid molecules in the membrane?
What is the primary function of the hydrophobic tails of phospholipid molecules in the membrane?
Which part of the phospholipid molecule provides a central water-repelling layer in the membrane?
Which part of the phospholipid molecule provides a central water-repelling layer in the membrane?
What is responsible for controlling the passage of substances into and out of the cell?
What is responsible for controlling the passage of substances into and out of the cell?
What do some membrane protein molecules act as for hormones and other chemical messengers?
What do some membrane protein molecules act as for hormones and other chemical messengers?
What influences the transfer of substances across the plasma membrane?
What influences the transfer of substances across the plasma membrane?
What is attached to the outside of the cell, giving it its immunological identity?
What is attached to the outside of the cell, giving it its immunological identity?
What type of molecules make up the phospholipid bilayer in the plasma membrane?
What type of molecules make up the phospholipid bilayer in the plasma membrane?
What are some functions performed by membrane proteins?
What are some functions performed by membrane proteins?
What do some membrane protein molecules have attached to the outside of the cell, giving it its immunological identity?
What do some membrane protein molecules have attached to the outside of the cell, giving it its immunological identity?
What is the initial cell from which the human body develops called?
What is the initial cell from which the human body develops called?
What is the name of the watery fluid enclosing the organelles in a cell?
What is the name of the watery fluid enclosing the organelles in a cell?
Which organelle in a cell is responsible for the production of ribosomes?
Which organelle in a cell is responsible for the production of ribosomes?
What consists of two layers of phospholipids with proteins and sugars embedded in them?
What consists of two layers of phospholipids with proteins and sugars embedded in them?
What is responsible for controlling the passage of substances into and out of the cell, regulating the intracellular environment?
What is responsible for controlling the passage of substances into and out of the cell, regulating the intracellular environment?
What influences the transfer of substances across the plasma membrane?
What influences the transfer of substances across the plasma membrane?
What provides a central water-repelling layer in the membrane?
What provides a central water-repelling layer in the membrane?
What are some membrane protein molecules according to page 34?
What are some membrane protein molecules according to page 34?
What do some membrane protein molecules act as for hormones and other chemical messengers?
What do some membrane protein molecules act as for hormones and other chemical messengers?
What is the primary function of the hydrophobic tails of phospholipid molecules in the membrane?
What is the primary function of the hydrophobic tails of phospholipid molecules in the membrane?
Which type of substances do membrane proteins that extend through the membrane provide channels for?
Which type of substances do membrane proteins that extend through the membrane provide channels for?
What is the characteristic of the head of a phospholipid molecule in the plasma membrane?
What is the characteristic of the head of a phospholipid molecule in the plasma membrane?
What influences the transfer of substances across the plasma membrane?
What influences the transfer of substances across the plasma membrane?
Which part of the phospholipid molecule provides a central water-repelling layer in the membrane?
Which part of the phospholipid molecule provides a central water-repelling layer in the membrane?
What do some membrane protein molecules act as for hormones and other chemical messengers?
What do some membrane protein molecules act as for hormones and other chemical messengers?
What are some functions performed by membrane proteins?
What are some functions performed by membrane proteins?
What is responsible for controlling the passage of substances into and out of the cell, regulating the intracellular environment?
What is responsible for controlling the passage of substances into and out of the cell, regulating the intracellular environment?
What do the hydrophobic tails of phospholipid molecules form in the membrane?
What do the hydrophobic tails of phospholipid molecules form in the membrane?
What is the function of the plasma membrane?
What is the function of the plasma membrane?
What is the primary characteristic of the plasma membrane's structure?
What is the primary characteristic of the plasma membrane's structure?
What makes up the cell contents, excluding the nucleus?
What makes up the cell contents, excluding the nucleus?
Which organelle is responsible for the production of ribosomes in a cell?
Which organelle is responsible for the production of ribosomes in a cell?
What is the initial cell called from which the human body develops?
What is the initial cell called from which the human body develops?
What gives the plasma membrane its immunological identity?
What gives the plasma membrane its immunological identity?
What provides a central water-repelling layer in the plasma membrane?
What provides a central water-repelling layer in the plasma membrane?
What is the watery fluid enclosing the organelles in a cell called?
What is the watery fluid enclosing the organelles in a cell called?
What is the primary characteristic of the head of a phospholipid molecule in the plasma membrane?
What is the primary characteristic of the head of a phospholipid molecule in the plasma membrane?
What arrangement does the phospholipid bilayer have in the plasma membrane?
What arrangement does the phospholipid bilayer have in the plasma membrane?
What do some membrane protein molecules act as for hormones and other chemical messengers?
What do some membrane protein molecules act as for hormones and other chemical messengers?
What is the function of the hydrophobic tails of phospholipid molecules in the membrane?
What is the function of the hydrophobic tails of phospholipid molecules in the membrane?
What provides a central water-repelling layer in the plasma membrane?
What provides a central water-repelling layer in the plasma membrane?
Which type of substances do membrane proteins that extend through the membrane provide channels for?
Which type of substances do membrane proteins that extend through the membrane provide channels for?
'Self' markers on the outside of the cell, giving it its immunological identity, are attached to which molecules?
'Self' markers on the outside of the cell, giving it its immunological identity, are attached to which molecules?
What is the arrangement of the hydrophilic heads and hydrophobic tails in the phospholipid bilayer?
What is the arrangement of the hydrophilic heads and hydrophobic tails in the phospholipid bilayer?
'Specific recognition sites' for hormones and other chemical messengers are found on which type of molecules?
'Specific recognition sites' for hormones and other chemical messengers are found on which type of molecules?
What is the primary function of the hydrophobic tails of phospholipid molecules in the membrane?
What is the primary function of the hydrophobic tails of phospholipid molecules in the membrane?
What is the watery fluid enclosing the organelles in a cell called?
What is the watery fluid enclosing the organelles in a cell called?
Which organelle in a cell is responsible for the production of ribosomes?
Which organelle in a cell is responsible for the production of ribosomes?
What do some membrane protein molecules act as for hormones and other chemical messengers?
What do some membrane protein molecules act as for hormones and other chemical messengers?
What is attached to the outside of the cell, giving it its immunological identity?
What is attached to the outside of the cell, giving it its immunological identity?
What type of substances do membrane proteins that extend through the membrane provide channels for?
What type of substances do membrane proteins that extend through the membrane provide channels for?
What provides a central water-repelling layer in the plasma membrane?
What provides a central water-repelling layer in the plasma membrane?
What is responsible for controlling the passage of substances into and out of the cell?
What is responsible for controlling the passage of substances into and out of the cell?
What consists of two layers of phospholipids with proteins and sugars embedded in them?
What consists of two layers of phospholipids with proteins and sugars embedded in them?
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