Intro to Human Body
The chin is_________ to the mouth, and the knee is_________ to the ankle.
anterior; distal
inferior; distal
superior; proximal
inferior; proximal
inferior; proximal
Anything that has weight and occupies space can be described as_________.
an atom
matter
a compound
a molecule
matter
Which of the following is NOT an example of a lipid?
Fats
Amino acids
Steroids
Phospholipids
Amino acids
Which organelle is produced with assistance from the nucleolus?
Mitochondrion
Nucleus
Ribosome
Lysosome
Ribosome
In_________, the sequence of bases in DNA determines the sequence of bases in mRNA. The process occurs in the_________.
mitosis; nucleus
cytokinesis; cytoplasm
translation; cytoplasm
transcription; nucleus
transcription; nucleus
The brain is comprised of _________.
epithelial tissue
connective tissue
muscle tissue
nerve tissue
nerve tissue
The integumentary system is made up of the_________.
bones, ligaments, and cartilage
hormone-producing glands
brain, spinal cord, and nerves
skin, hair, nails, and associated glands
skin, hair, nails, and associated glands
A chemical formula expresses_________.
the chemical composition of a molecule
the number of atoms for each element in the molecule
the atoms involved in chemical bonding
All of the choices are correct.
All of the choices are correct.
A saturated fat will have _________.
significant numbers of carbon-carbon double bonds
very few hydrogen atoms
no carbon to carbon double bonds
excessive nutrients
no carbon to carbon double bonds
The structure that controls the movement of materials into and out of cells is the_________.
nucleus
cytoplasm
plasma membrane
endoplasmic reticulum
plasma membrane
After being produced,_________ provides the blueprint for assembling proteins.
mRNA
rRNA
mtRNA
tRNA
mRNA
The tissue type that contracts to provide force is _________ tissue.
epithelial
connective
muscle
nerve
muscle
A tissue is_________.
an organ with specific functions
organs grouped together
the structural and functional units of the body
a group of cells that perform similar functions
a group of cells that perform similar functions
If an atom has 8 protons and 8 neutrons in its nucleus, and 8 orbiting electrons, its atomic number would be_________.
24
16
8
12
8
Lactose, the sugar contained in milk, is an example of a_________.
simple sugar
monosaccharide
disaccharide
None of the choices are correct.
disaccharide
Materials are packaged in vesicles for transport by the_________.
mitochondrion
Golgi complex
lysosome
endoplasmic reticulum
Golgi complex
A solution which contains a high concentration of salts relative to the cytosol of a cell is a(n)_________.
hypotonic solution
isotonic solution
hypertonic solution
hypo-osmotic solution
hypertonic solution
The connective tissue with a matrix of calcium salts and some collagen fibers is _________.
bone tissue
fibrocartilage
hyaline cartilage
elastic cartilage
bone tissue
The lowest level of organization in the body is the_________ level.
organ
tissue
chemical
cellular
chemical
To form an ion, an atom must either donate or receive a(n) _________.
electron
proton
neutron
electrons and neutron
electron
The ionization of a/an_________ releases hydrogen ions and increases the concentration of hydrogen ions in a solution.
acid
base
salt
solvent
acid
The_________ are the folds of the inner membrane within a mitochondrion that contain the enzymes for aerobic respiration.
mitochondrial centrioles
mitchondrial reticulum
mitochondrial cristae
mitochondrial complexes
mitochondrial cristae
Substances can enter a cell against the concentration gradient by_________ transport, which is powered by_________.
passive; electrolytes
passive; ATP
active; electrolytes
active; ATP
active; ATP
The membranes that line the tubes or cavities that have openings to the external environment are referred to as _________.
serous membranes
cutaneous membranes
mucous membranes
synovial membranes
mucous membranes
A negative feedback mechanism contains what three components?
A reflex, an effect, and a chemical signal
A receptor, a reflex, and a chemical signal
A receptor, an integration center, and an effector
A chemical signal, an integration center, and a reflex
A receptor, an integration center, and an effector
An atom that has 6 electrons in its valence shell will be most likely to _________.
donate 2 electrons
donate 6 electrons
receive 2 electrons
receive 6 electrons
receive 2 electrons
The genetic code of _________ is formed by the sequence of nitrogenous _________ in its nucleotides.
RNA; acids
RNA; sugars
DNA; bases
DNA; sugars
DNA; bases
During what phase of mitosis does the nuclear envelope disappear and the chromosomes condense?
Anaphase
Telophase
Metaphase
Prophase
Prophase
If a 5% glucose solution (A) is separated from a 10% glucose solution (B) by a semipermeable membrane that is permeable to both glucose and water, glucose will diffuse from _________, and water will move via osmosis from _________.
A to B; A to B
B to A; A to B
B to A; B to A
A to B; B to A
B to A; A to B
What tissue is comprised of a single layer of square-like cells?
simple squamous epithelium
simple cuboidal epithelium
pseudostratified columnar epithelium
simple columnar epithelium
simple cuboidal epithelium