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WorksheetsMolecules of life & Cell Structure
Total questions: 30
Worksheet time: 19mins
The attraction that causes water and other liquids to form drops is called ________________. This is also water’s ability to be attracted to other water molecules.
adhesion
capillary action
cohesion
surface tension
Water striders can walk across the surface of calm water. Their feet push the surface of the water down slightly, but they do not break the surface. Why?
The insects are light enough so they do not break the hydrogen bonds holding the water molecules together
The insects actually use their wings to hover slightly above the water’s surface and they only skim it with their feet.
The insect’s feet are non-polar, so they are repelled by the polar water molecules and are pushed away from the water’s surface.
The insects are small enough to see the individual water molecules, so they are able to step carefully from one molecule to the next
Which property of water is responsible for cooling off the human body when sweat evaporates into water vapor?
Surface Tension
High latent heat of vaporization
Ice floats on water (solid water -ice- is less dense than liquid water
Adhesion
What is this molecule?
sucrose
α-glucose
lipid
β-glucose
What kind of molecule is represented by the diagram?
starch molecule
glucose molecule
fat molecule
monosaccharide
The bonds linking amino acids are called
Peptide bonds
Glycosidic bonds
Ester bonds
Hydrogen bonds
The phospholipid bilayer comprises which part of the cell?
cytoplasm
cell membrane
cytoskeleton
cell wall
What type of lipid is this?
steroid
cholesterol
phospholipid
triglyceride
Diagram shows a stucture of nucleotide. Name the part labeled 2?
Pentose sugar
Phosphate
Nitrogenous Base
Phosphorous
Name of the bond which holds nucleotides together.
Phosphodiester Bond
Amino Bond
Nucleic Bond
Peptide Bond
This is a system of membranous tubules and sacs in eukaryotic cells that functions as a path along which molecules move from one part of the cell to another. Can be rough or smooth.
Mitochondria
Chloroplast
Endoplasmic reticulum
Centrioles
What cells are primarily found in the mesophyll which used for photosynthesis and storage?
Collenchyma
Sclerenchyma
Parenchyma
Sieve Tube Cells
Diagram shows a structure of neuron. What does the letter "A" represent?
Axon
Dendrite
Axon Terminal
Cell Body
The picture is an example of _________________.
facilitated diffusion
simple diffusion
osmosis
active transport
The _________________ model describes the structure of the plasma membrane.
fluid mosaic
double helix
Bohr
distribution
Cells use a process called __________ to move bulky materials out of a cell using a vesicle.
exocytosis
endocytosis
phagocytosis
pinocytosis
Which type of tissue is shown in the picture?
connective
epithelial
muscle
nervous
Which type of tissue is shown in the picture?
connective
nervous
epithelial
muscle
Which type of muscle tissue is shown?
smooth
skeletal
cardiac
epithelial
What type of plant cells are pictured?
parenchyma
collenchyma
sclerenchyma
epidermis
