The parts of a protein that change when it denatures are

the secondary and tertiary structures

Which of the following substances account for more than 95% of the human body?

Carbon, Hydrogen, Oxygen, Nitrogen

A simple carbohydrate..

has a molecular formula of C6 H12 O6

organic molecules ____, wheras inorganic molecules ____.

COntain carbon; do not contain carbon

the three dimensional shape of a molecule, such as a protein

composed of building block called nucleotides

the informational content of DNA and RNA is in the nitrogenous bases because

bases are several types and therefore can form a sequence

saturated fats ____ than unsaturated fats.

have more single carbon-carbon bonds

An atom that has 3 electrons in its second shell and a filled first shell will

lose 3 electrons from its second shell

DNA and RNA differ in that

DNA,holds gentic info;RNA uses info to synthesize protein

Protein:speeds up chemical React w/out changing/depleting

In the body, oxygen..

Releases energy from glucose during cellular respiration

A complete atom is electrically neutral because the number of

Negative electrons and positive protons are equal

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Anatomy and Physiology Chapter 2 test

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Anatomy and physiology chapter 2 test, about chemistry being apart of anatomy

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Questions 35

Answers

1
The parts of a protein that change when it denatures are
the tertiary and quarternary structures
the amino acid and carboxyl groups exchange locations
primary and secondary structures
the secondary and tertiary structures
2
In a Covalent bond
Atoms share pairs of electrons
all of the above
one atom shares and another atom gains electrons
opppositely charged atoms attract
3
Bases reacting with acids form ____ and water
lipids
Salts
Buffers
proteins
4
Which of the following substances account for more than 95% of the human body?
Calcium, Hydrogen, oxygen, nitrogen
Carbon, Hydrogen, Oxygen, Nitrogen
Calcium, Carbon, Nitrogen, Hydrogen
Carbon, Phosphorus, Oxygen, Hydrogen
5
a person has alkalosis if the blood pH
drops below 7.4
rises above 7.4
rises above 7.0
drops below 7
6
A simple carbohydrate..
Consists of several joined chains
is a building block of protein
has only one nucleotide
has a molecular formula of C6 H12 O6
7
organic molecules ____, wheras inorganic molecules ____.
COntain carbon; do not contain carbon
Contain carbon; do not dissolve in water
do not contain carbon; do contain carbon
are small; are very large
8
The difference in hydrogen ion concentration between solutions with PH 4 & PH 5 is
Tenfold
Twentyfold
twofold
fivefold
9
A solution that contains equal numbers of hyrdogen and hydroxyl ions is..
Basic
Acidic
Neutral
Alkaline
10
The four most abundant elements in the human body are..
Na, Mg, P, and K
N, H, Mg, and K
O, C, H, and N
Ca, C, O, and Na
11
the unique, three dimensional structure of a protein molecule is determined largely by
Covalent Bonds
Oxygen Bonds
Hydrogen bonds
Ionic bonds
12
Conformation is...
the ability of RNA to copy itself
the three dimensional shape of a molecule, such as a protein
a religious service
energy held in bonds of an organic molecule such as proteins
13
A chemical reaction in which pairs of different molecules trade positions is a
synthesis reaction
reversible reaction
decomposition reaction
exchange reaction
14
Nucleic acids are...
all of the below
composed of building block called nucleotides
very small, simple molecules
sources of cellular energy
15
The ____ uses the element iodide.
liver
Thyroid
spleen
thymus
16
An acid reacting with a base is
decomposition reaction
synthesis reaction
hydrolysis
Exchange reaction
17
atoms of the isotopes of a particular element vary in the number of
electrons
neutrons
nuclei
protons
18
Which of the following compounds is not hydrophilic?
water
Lipids
Proteins
Carbohydrates
19
the informational content of DNA and RNA is in the nitrogenous bases because
bases are also parts of amino acids
contain nitrogen
bases are several types and therefore can form a sequence
sugars and phosphates vary too much
20
Synthesis reactions are particularly important in the body for
clearance of toxins
Release of energy
Growth of body parts
digestion of food products
21
matter is composed of____, which are composed of ____
Elements; atoms
Atoms; Molecules
Molecules; elements
Chemicals; molecules
22
A protein can denature when...
Hydrogen bonds form
Peptide bonds break
bonds between carbon and oxygen break
week hydrogen bonds break
23
DNA..
provides cellular energy
stores genetic information
is important in building carbohydrates
helps synthesize nucleic acids
24
saturated fats ____ than unsaturated fats.
taste better
are heavier
have more single carbon-carbon bonds
have fewer hydrogen atoms bonded to carbon atoms
25
An atom that has 3 electrons in its second shell and a filled first shell will
gain 5 electrons in its second shell
lose 3 electrons from its second shell
gain 2 electrons in its second shell
lose all electrons from first shell
26
The type of Organic molecule that can replicate is a
protein
lipid
Nucleic acid
Salt
27
DNA and RNA differ in that
RNA deoxyribose and DNA has ribose
DNA is found in males, RNA is found in females
RNA is double stranded and DNA is single stranded
DNA,holds gentic info;RNA uses info to synthesize protein
28
An enzyme is a ___.
all of the below
protein that functions as a hormone
Protein:speeds up chemical React w/out changing/depleting
fiborous protein that is part of certain tissues in the body
29
Chemistry is important to the study of physiology because
drugs are chemicals
all of the baove
Body fnc reflect cellular func that reflect chemical changes
we eat chemicals
30
A triglyceride consists of...
3 glucose molecules
3 amino acids
1 glycerol and 3 fatty acids
1 amino group and 1 carboxyl group
31
In the body, oxygen..
Exchanges with carbon dioxide
reacts with water to form carbonic acid
Releases energy from glucose during cellular respiration
Helps regulate body temperature
32
Which of the following is the abundant inorganic substance in cells?
lipid
Water
protein
bone
33
Which of the following is not organic?
cholesterol
nucleic acids
Lipids
Oxygen
34
Table sugar breaking down into glucose and fructose is a ___ reaction.
hydroxlysis
exchange reaction
metabolic
decomposition
35
A complete atom is electrically neutral because the number of
Negative electrons and positive protons are equal
positively charged protons and neutral neutrons are equal
None of the below
electrons greater than number of protons & neutrons combined

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