Question

Can someone help me with a review please?

Answer 1

Which of the following is not a property required to be a living organisms? *
Evolution
Homeostatis
Growth
Metabolism
Responsiveness
Photosynthesis.
The combination of chemical reactions through which an organism builds up or breaks down materials as it carries out its life processes is called . *
Evolution
Metabolism
Homeostasis
Evolution
A person is vigorously exercising. As a response the body begins to sweat in an attempt to lower the temperature. This is an example of: *
Evolution
Metabolism
Homeostasis
Adaptation
A covalent bond is formed as the result of *
transferring electrons
sharing electrons
transferring protons
sharing protons
The difference between Carbon -13 and Carbon – 14 is the number of *
protons
electrons
neutrons
nuclei
A neutral atom becomes a negatively charged ion by _____________ electrons. *
gaining
maintaining
losing
donating
These attractive forces hold ionic bonds together. *
sharing electrons
transferring protons
sharing protons
opposite charges
The polarity of water describes the unequal sharing of electrons. This results in *
partial positive and negative charges.
ionic bonds.
positive charges only.
negative charges only.
Water’s high heat capacity protects organisms in the ocean from *
sharks.
drastic changes in temperature.
floating to the surface.
strong ocean currents.
Which statement best describes an effect of the low density of frozen water in a lake? *
When water freezes, it contracts, decreasing the water level in a lake.
Water in a lake freezes from the bottom up, killing most aquatic organisms.
When water in a lake freezes, it floats, providing insulation for organisms below.
Water removes thermal energy from the land around a lake, causing the lake to freeze.
The _________ of water allows some insects to walk on a pond’s surface. *
cohesion
density
adhesion
acidity
An acidic solution has a high concentration of H+ ions, with a pH value *
of 7.
between 8 and 14.
between 0 and 14.
between 0 and 6.
Which statement correctly describes how carbon’sability to form four bonds makes it uniquely suited to form macromolecules? *
It forms short, simple carbon atoms
It forms large, complex, diverse molecules.
It forms covalent bonds with other carbon atoms.
It forms covalent bonds that exist in a single plane.
Captionless Image
The diagram above shows a reaction that forms a polymer from two monomers. What is this type of reaction called? *
(take note of what is occuring between your reactants in the 1st line and your products in the bottom line)
glycolysis
dehydration synthesis
hydrolysis
photosynthesis
Nucleic acids are used to store and transmit *
simple sugars.
fatty acids.
genetic information.
energy.
Proteins differ from carbohydrates in that they *
provide a hydrophobic membrane.
consist of nucleotides.
are used as the main energy source.
regulate cell processes.