Biol 102 Week 1
A protein inside cells that speeds up the rate of a chemical reaction is a(n) ____.
enzyme
A dissolved substance in water is a(n)____.
solute
Plants store large amounts of carbohydrates in the form of
starch
The structural building blocks for proteins are ____.
amino acids
Positron emission tomography (PET) utilizes ____ to yield results of a scan.
tracers
Which statement is true of electron shells?
The innermost shell can hold up to two electrons.
Which is the correct order of organization in nature, from least inclusive to most inclusive?
organism → population → community → ecosystem
Which part of the amino acid helps to determine its chemical properties?
R-group
Which of the following is composed of a 1:2:1 ratio of carbon to hydrogen to oxygen?
carbohydrate
The basic unit demonstrating all the characteristics of life is the ____.
cell
A protein combined with cholesterol in the blood is an example of a(n) ____.
lipoprotein
Isotopes of an element are different from the most common standard form due to differences in the ____.
number of neutrons in the nucleus
A nucleotide is composed of at least one sugar, one phosphate group, and ____.
one nitrogen-containing base
What fat is the building block for cell membranes?
phospholipids
The atomic number denotes the number of ____ in an atom of a particular element.
protons
The process by which the movement of internal bonds converts one type of organic compound into another is ____.
rearrangement
A systematic way of obtaining knowledge about the natural world is ____.
science
During a synthesis reaction, glucose and fructose combine to form ____.
sucrose
Homeostasis refers to ____.
the maintenance of a constant internal state
Which form of organization is classified between cell and organ?
tissue
Covalent bonds ____.
are extremely strong and stable
Populations of different species comprise a(n) ____.
community
