Intro to Human Body
Chemistry
Biochemistry
Cell Structure
Cell Function
Tissues & Membranes
100

The chin is_________ to the mouth, and the knee is_________ to the ankle.

anterior; distal

inferior; distal

superior; proximal

inferior; proximal

inferior; proximal

100

Anything that has weight and occupies space can be described as_________.

an atom

matter

a compound

a molecule

matter

100

Which of the following is NOT an example of a lipid?

Fats

Amino acids

Steroids

Phospholipids

Amino acids

100

Which organelle is produced with assistance from the nucleolus?

Mitochondrion

Nucleus

Ribosome

Lysosome

Ribosome

100

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

100

The brain is comprised of _________.

epithelial tissue

connective tissue

muscle tissue

nerve tissue

nerve tissue

200

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

200

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.

200

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

200

The structure that controls the movement of materials into and out of cells is the_________.

nucleus

cytoplasm

plasma membrane

endoplasmic reticulum

plasma membrane

200

After being produced,_________ provides the blueprint for assembling proteins.

mRNA

rRNA

mtRNA

tRNA

mRNA

200

The tissue type that contracts to provide force is _________ tissue.

epithelial

connective

muscle

nerve

muscle

300

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

300

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

300

Lactose, the sugar contained in milk, is an example of a_________.

simple sugar

monosaccharide

disaccharide

None of the choices are correct.

disaccharide

300

Materials are packaged in vesicles for transport by the_________.

mitochondrion

Golgi complex

lysosome

endoplasmic reticulum

Golgi complex

300

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

300

The connective tissue with a matrix of calcium salts and some collagen fibers is _________.

bone tissue

fibrocartilage

hyaline cartilage

elastic cartilage

bone tissue

400

The lowest level of organization in the body is the_________ level.

organ

tissue

chemical

cellular

chemical

400

To form an ion, an atom must either donate or receive a(n) _________.

electron

proton

neutron

electrons and neutron

electron

400

The ionization of a/an_________ releases hydrogen ions and increases the concentration of hydrogen ions in a solution.

acid

base

salt

solvent

acid

400

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

400

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

400

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

500

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

500

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

500

The genetic code of _________ is formed by the sequence of nitrogenous _________ in its nucleotides.

RNA; acids

RNA; sugars

DNA; bases

DNA; sugars

DNA; bases

500

During what phase of mitosis does the nuclear envelope disappear and the chromosomes condense?

Anaphase

Telophase

Metaphase

Prophase

Prophase

500

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

500


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

M
e
n
u