Biology 181 Exam 1 Practice

Which of the following has no electrical charge and is located in the nucleus of the atom?

Which nucleotide is present in DNA, but not in RNA?

Of these listed, which is the smallest organizational level within a human:

Which of the following best describes the characteristic of response to stimuli?

The reactivity of an atom arises from the existance of unpaired electrons in the valence shell

Cohesion, surface tension, and adhesion are properties of water that are a result of hydrogen bonding between molecules

Humans, dogs and birds belong to which domain?

The body temperature of humans fluctuates only slightly during the day. This describes the characteristic of evolution.

Which is NOT one of the categories of fats or lipids?

The observation that the sky was a pale blue is an example of quantitative data

Maltose, sucrose and lactose are all dimers of which class of macromolecules?

Which of the following chemical bonds occur when atoms share electrons?

Unsaturated fats have one or more double bonds in their fatty acid chains

How many covalent bonds can an atom of carbon form?

An enzyme is consumed during the reaction it catalyzes

Which of the following IS one of the four elements that makes up 96% of living matter?

Reduced leaves on cacti allow them to live in a desert environment. What is this characteristic of life?

Generally speaking, which types of reactions assemble polymers?

What is the smallest unit of matter that maintains the properties of a particular chemical?

A competitive inhibitor competes with the substrate for the enzyme's ________.