Cell Theory & Types
Which statement is part of the cell theory?
a) all cells form by free-cell formation
b)all orgnaisms are made of cells
c) all cells are eukaryotic
b) all organisms are made of cells
Which organelle produces energy for the cell?
A) Ribosome
B) Mitochondrion
C) Nucleus
B) Mitochondrion
The diffusion of water across a membrane is called:
A) Osmosis
B) Active transport
C) Endocytosis
A) Osmosis
The cell membrane is made mostly of:
A) Carbohydrates
B) Proteins
C) Phospholipids
C) Phospholipids
Which organelle supplies energy to the cell through cellular respiration?
A) Nucleus
B) Mitochondrion
C) Ribosome
B) Mitochondrion
Which type of cell lacks a nucleus?
A) Eukaryotic
B) Prokaryotic
C) Plant
B) Prokaryotic
Which organelle contains digestive enzymes?
A) Lysosome
B) Golgi apparatus
C) Vacuole
A) Lysosome
Which process does not require energy?
A) Active transport
B) Endocytosis
C) Facilitated diffusion
C) Facilitated diffusion
A phospholipid is composed of:
A) A polar head and a nonpolar tail
B) Two polar heads
C) Two nonpolar tails
A) A polar head and a nonpolar tail
Which process occurs in chloroplasts?
A) Respiration
B) Photosynthesis
C) Protein synthesis
Photosynthesis
What structure contains the genetic material in eukaryotic cells?
A) Ribosome
B) Cytoplasm
C) Nucleus
C) Nucleus
What is the function of the Golgi apparatus?
A) Photosynthesis
B) Protein packaging and modification
C) Protein synthesis
B) Protein packaging and modification
Which process requires energy to move molecules against the concentration gradient?
A) Active transport
B) Passive transport
C) Diffusion
A) Active transport
The model that describes the cell membrane’s structure is the:
A) Fluid Mosaic Model
B) Dynamic Model
C) Phospholipid Model
A) Fluid Mosaic Model
Which process moves substances into the cell using vesicles?
A) Exocytosis
B) Endocytosis
C) Osmosis
B) Endocytosis
Which organelle is found only in plant cells?
A) Lysosome
B) Chloroplast
C) Centriole
B) Chloroplast
Which organelle is responsible for photosynthesis?
A) Mitochondrion
B) Chloroplast
C) Ribosome
B) Chloroplast
A membrane-bound sac used to move materials in and out of the cell is a:
A) Vesicle
B) Lysosome
C) Centriole
A) Vesicle
Which part of the phospholipid is hydrophilic?
A) The fatty acid tail
B) The phosphate head
C) The lipid bilayer
B) The phosphate head
The concentration difference of molecules across a space is called a:
A) Dynamic balance
B) Concentration gradient
C) Chemical barrier
B) Concentration gradient
Which of the following is a major principle upon which cell theory is based?
a. All cells form by free-cell formation.
b. All cells have DNA.
c. All organisms are made of cells.
c. All organisms are made of cells.
Which organelle forms a framework that gives the cell its shape?
A) Vesicle
B) Cytoskeleton
C) Nucleus
B) Cytoskeleton
What happens during exocytosis?
A) A vesicle fuses with the membrane and releases contents outside the cell
B) A vesicle brings substances into the cell
C) Molecules move down a gradient
A vesicle fuses with the membrane and releases contents outside the cell
What does it mean that the cell membrane is “selectively permeable”?
It allows some substances to pass through while blocking others.
What provides the energy required for active transport?
ATP (adenosine triphosphate)