The atomic weight is an average of the relative weights (mass numbers) of all the isotopes of an element.
Indicate whether the statement is true or false
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Question 2) Matching
A) A
B) B
C) C
D) D
E) E
6) Simple cuboidal epithelium.
7) Cardiac muscle.
8) Simple squamous epithelium.
9) Stratified squamous epithelium.
10) Skeletal muscle.
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Question 3) Matching
A) E
B) A
C) D
D) B
E) C
1) Supports and protects; stores calcium.
2) Forms tendons and ligaments.
3) Supports and protects; insulates against heat loss; reserve source of fuel.
4) Provides tensile strength with the ability to absorb compressive shock.
5) Composed of cells in a fluid matrix.
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Question 4) Matching
A) Tight junctions
B) Gap junctions
C) Desmosomes
31) Help prevent molecules from passing through the extracellular space between adjacent cells.
32) Type of anchoring junction.
33) Allows ions and small molecules to pass through from one cell to another.
34) Present in electrically excitable tissues.
35) Abundant in tissues subjected to great mechanical stress.
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Question 5) Matching
A) Anaphase
B) Late prophase
C) Telophase
D) Early prophase
E) Metaphase
21) Chromosomes uncoil to form chromatin.
22) Chromosomal centromeres split and chromosomes migrate to opposite ends of the cell.
23) Nuclear membrane and nucleolus disintegrate.
24) Chromosomes align on the spindle equator.
25) Centrioles move to opposite ends of the cell.
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Question 6) Matching
A) Microtubules
B) Nucleoli
C) Ribosomes
D) Endoplasmic reticulum
E) Nucleus
26) Plays a role in the synthesis of steroid-based hormones and proteins.
27) The organelle that facilitates peptic bond formation between amino acids.
28) Play a critical role in forming spindle fibers for cell division, organize and move organelles as well as giving shape to the cell.
29) Dense spherical bodies in the nucleus that are the synthesis site for ribosomal RNA.
30) The vast majority of the cell's genetic material is housed here.
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Question 7) Matching
A) Transfer RNA
B) Messenger RNA
C) Ribosomal RNA
D) ATP
E) Synthetase enzymes
15) Forms part of the subunits for the protein synthesizing organelle.
16) A molecule that binds to a specific codon and specific amino acid simultaneously.
17) Attaches the correct amino acid to its transfer RNA.
18) Provides the energy needed for synthesis reactions.
19) Produced in the nucleus, this molecule specifies the exact sequence of amino acids of the
20) May be attached to the ER or scattered in the cytoplasm.
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Question 8) Matching
A) A
B) E
C) C
D) D
E) B
8) Nonpolar region of phospholipid.
9) Glycocalyx.
10) Polar region of phospholipid.
11) Peripheral protein.
12) Integral protein.
13) Unique glycoproteins and glycolipids involved in cell recognition.
14) Hydrophilic portion of phospholipid.
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Question 9) Matching
A) C
B) E
C) D
D) A
E) B
1) Produces ATP aerobically.
2) Site of enzymatic breakdown of phagocytized material.
3) Packages proteins for insertion in the cell membrane or for exocytosis.
4) Site of synthesis of lipid and steroid molecules.
5) Forms the mitotic spindle.
6) Replicate for cell division.
7) When ruptured it releases the enzymes responsible for autolysis.
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Question 10) Matching
A) Atomic symbol
B) Mass number of an element
C) Atomic number
37) Usually, the first one or two letters of an element's name.
38) Number of protons in an atom.
39) Combined number of protons and neutrons in an atom.
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