WorksheetsMidterm Biology l
Total questions: 26
Worksheet time: 13mins
1. --------------- accounts for more than half of the total membrane in many eukaryotic cells
Plasma membrane
Endoplasmic reticulum
Golgi apparatus '
Nuclear envelope
Flattened membranous sacs inside the chloroplast
grana
Chromoplasts
Stroma
Thylakoid
Example of prokaryotic cells
Protists
fungi
animals
Bacteria
Which of the following contains hydrolytic enzymes
vacuole
lysosome
mitochondrion
Golgi apparatus
The nuclear lamina stabilizes cell shape
T
F
Phagocytosis is a process by which some types of cell can engulf another cell
T
F
All of the following serve an important role in determining or maintaining the structure of plant cells. Which of the following are distinct from the others in their composition?
microtubules
microfilaments
plant cell walls
intermediate filaments
The kind of vacuoles that is found in many mature plant cells, hold organic compounds and water
Central vacuoles
food vacuoles
Cytosol vacuoles
nuclear vacuoles
Are not parts of the endomembrane system
Smooth ER
Golgi Apparatus
Rough ER
Mitochondria
Hollow rods that support cells and help in guiding the movement of organelles
Microtubules
Microfilaments
actin filaments
Intermediate filaments
Ions can travel directly from the cytoplasm of one animal cell to the cytoplasm of an adjacent cell through
plasmodesmata
intermediate filaments
tight junctions
gap junctions
Sperm cells move by means of _____.
cilia
flagella
mitochondria
microtubules
The ______ helps to maintain the cell's shape, anchors the organelles, and allows the cell and its organelles to move.
nucleus
rough endoplasmic reticulum
cytoskeleton
nucleolus
Different atomic forms of an element that contain the same number of protons but a different number of neutron are called
Neutronics atoms
Isotopes
Neutronics atoms
Isozymes
Which of the following bond or interaction would require more energy and would be difficult to disrupt
covalent bond
Hydrogen bond
Van der Waals interaction
Ionic bond
What does the nucleus of an atom contain
protons and neutrons
electrons
protons
protons and electrons
Which type of organic macromolecule is used primarily for energy and structure?
NaCl
nucleic acids
carbohydrates
proteins
When nucleotide monomers join together, the ______ polymer is formed.
carbohydrate
protein
nucleic acid
cholesterol
If a protein is exposed to physical/chemical agents, it may lose its native conformation. This change is called….
Maturation
Denaturation
Replication
Transcription
Molecular that assist the folding of other proteins are called
Hemoglobin
Chaperonin
collagen
Silk protein
What is the number of neutrons of an atom with an atomic mass of 32 and 15 protons
15
3/
17
31
The following types of bonds/interactions can be found in the tertiary structure of proteins
S-S bridges
Van der Waals interaction
Hydrogen bonds
All above
Which type of lipid has four fused carbon rings?
cholesterol
triglyceride
maltose
DNA
Which of the following is true of cellulose?
It is a polymer composed of sucrose monomers.
It is a storage polysaccharide for energy in plant cells
It is a storage polysaccharide for energy in animal cells
It is a major structural component of plant cell walls
The α helix and the β pleated sheet are both common polypeptide forms found in which level of protein structure?
primary
secondary
tertiary
all of protein structure
The bonding of two amino acid molecules to form a larger molecule requires
the release of a carbon dioxide molecule
the addition of a nitrogen atom.
the addition of a water molecule
the release of a water molecule
