HESI A2 BIOLOGY QUESTIONS AND ANSWERS
In the hierarchic system of classification which is the least inclusive?
Species
After observing an event, you develop an explanation this is:
Hypothesis
A molecule of water is bonded with another molecule of water by what type of bond?
Hydrogen
...
HESI A2 BIOLOGY QUESTIONS AND ANSWERS
In the hierarchic system of classification which is the least inclusive?
Species
After observing an event, you develop an explanation this is:
Hypothesis
A molecule of water is bonded with another molecule of water by what type of bond?
Hydrogen
Which is a benefit of the intermolecular hydrogen bonding of water:
1- Water has a relatively high specific heat value.
2- Water has strong cohesive and adhesive properties.
3- Polarity of water allows it to act as a versatile solvent.
Of all molecules that are significant to biology which are considered important:
nucleic acids
Lipids are better known as fats but what are they specifically?
Fatty acids, phospholipids, steroids
What are the 2 categories of fatty acids?
saturated fats and unsaturated fats
How do phospholipids function in cells?
They are integral components of plasma membrane
Which of the biologic molecules are considered the most significant contributor to cellular function?
Proteins
Proteins are polymers of which?
Amino Acids
Which of the following proteins catalyze different reactions or processes?
Enzyme
Which of the biologic molecules are components of the molecules of inheritance?
Nucleic Acids
What is the sum of all chemical reactions that occur in an organism?
Metabolism
In a cell, reactions take place in a series of steps called:
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