True & False

Chromatin consist of DNA and RNA

False(Just DNA)

in osmosis, movement of water occurs toward the solution with the lower solute concentration

False(false because it says lower solute concentration and should be higher solute concentration)

The serous membrane that lines the peritoneum cavity wall is called visceral peritoneum.

False(peritoneum)

The genetic information is coded in DNA by the regular alternation of sugar and phosphate molecule

False(phosphates and amino acids)

Each daughter cell resulting from mitotic cell division has exactly as many chromosomes as the parent cell

True

Ceruminous glands are modified merocrine glands.

false

Microfilaments are thin threads of the contractile protein myosin

false

The skin is not able to receive stimuli because the cells of the epidermis are not living and therefore there are no sensory receptors in the skin.

false

The stratum corneum (outermost layer of skin) is a zone of approximately four layers of viable cells that are able to synthesize proteins that keep the outer layer of skin smooth and soft.

false

connective tissues that possess a large quantity of collagen fibers often provide the framework for organs such as the spleen and lymph nodes.

false

covalent bonds are generally less stable than ionic bonds

false

destruction of the matrix of the hair bulb would result in its inability to produce oil

false

embryology concerns the structural changes that occur in an individual from conception through the old age

false

merocrine glands produce their secretions by accumulating their secretion internally and then rupturing the cell

false

salivary glands exhibit simple tubuloalveolar glandular arrangement

false

the right hypochondriac region contains the majority of the stomach

false

DNA transcription is another word for DNA replication

false (DNA synthesis is another word for DNA replication)

in their resting state, all body cells exhibit a resting membrane potential ranging from -50 to about +50 millivolts

false (about -70mV)

The reason that the nail bed appears pink is the presence of a large number of melanocytes in the underlying dermis.

false (appears pink because it lies over a bed of tissues that is rich in blood)

a major characteristic of fibrocartilage is its unique amount of flexibility and elasticity.

false (collagen)

When an individual is exposed to extremely low air temperatures, the dermal blood vessels will dilate so that blood and heat will be dissipated.

false (constrict)

achilles was wounded by damage to the tendon connecting his calf muscles to his heel. This and all tendons are composed mainly of dense irregular connective tissues

false (dense regular connective tissue)

the basic difference between dense irregular and dense regular connective tissues is in the amount of elastic fibers and adipose cells present.

false (dense regular: parallel collagen tigers; provides strength in one direction. Dense irregular; irregular collagen fibers; provides strength against tension in many directions)

chemical properties are determines primarily by neutrons

false (electrons)

sweat glands are apocrine glands

false (endocrine)

Skin surface markings that reflect points of tight dermal attachment to underlying tissues are called epidermal ridges.

false (flexure lines)

lipids are a poor source of stored energy

false (good source)

about 60% to 80% of the volume of most living cells consists or organic compounds

false (inorganic compounds)

Nervous tissue consists mainly neurons and collagen fibers

false (just neurons)

the glycocalyx is often referred to as the "cell coat," which is somewhat fuzzy and sticky with numerous cholesterol chains sticking out from the surface of the membrane.

false (no cholesterol)

Joe just burned himself on a hot pot. A blister forms and the burn is painful. Joe's burn would best be described as a third-degree burn.

false (second degree burn)

the hyponychium is commonly called the cuticle

false (the epidermis is commonly called the cuticle)

The hypodermis is composed of adipose and dense connective tissue.

false (the hypodermis is composed of areolar and adipose connective)

hydrogen bonds are comparatively strong bonds

false (they are weak)

cartilage tissue tends to heal less rapidly than bone tissue

false(bone tissue takes a long time to heal)

intercalated discs and striations are found in skeletal muscle

false(both found in cardiac muscle)

facilitated diffusion always requires a carrier protein

false(can use a channel protein)

the elbow is proximal to the shoulder

false(it is distal)

most organelles are bounded by a membrane that is quite different in structure from the lipid bilayer of the plasma membrane

false(it is similar)

A dipeptide can be broken into two amino acids by dehydration synthesis

false(lysis)

isotopes differ from each other only in the number of electrons contained

false(neutrons)

DNA contains "dark matter" that codes for specific structural proteins

false(not dark matter. dark matter is in the brain)

endocrine glands are often called ducted glands

false(sebaceous are duct)

Aquaporins are believed to be present in red blood cells and kidney tubules, but very few other cells in the body

false(they are in lots of cells)

most connective tissues have regenerative capacity, while most epithelial tissues do not.

false(they do have regenerative capacity)

telomeres are the regions of chromosomes that code for the protein ubiquitin

false(ubiquitin has to do with cell degradation)

A major function of serous membranes is to decrease friction.

true

A physician is often able to detect homeostatic imbalances in the body by observing changes in the skin color.

true

A process by which large particle may be taken into the cell for food, protection of the body, or for disposing of old or dead cells is called phagocytosis

true

A tissue consists of groups of similar cells that have a common function

true

Final preparation for cell division is made during the cell life cycle sub phase called G2

true

Interstitial fluid represents one type of extracellular material

true

Nitric oxide may act as a biological messenger

true

Positive feedback mechanisms tend to increase the original stimulus

true

Regardless of race, all human beings have about the same number of melanocytes.

true

The anatomical position means the body is standing at attention with the palms facing forward and the thumbs pointing away from the body.

true

The cell (plasma) membrane normally contains substantial amounts of cholesterol

true

The dense fibrous connective tissue portion of the skin is located in the reticular region of the dermis.

true

The dermis is rich in blood vessels and nerve fibers.

true

The shock-absorbing pads between the vertebrae are formed of fibrocartilage

true

a charged particle is generally called an ion

true

a molecule consisting of one carbon atom and two oxygen atoms is correctly written as CO2

true

all organic compounds contain carbon

true

apoptosis is programmed cell suicide, but cancer cells fail to undergo apoptosis

true

blood is considered a type of connective tissue

true

brown fat is frequently deposited between the shoulder blades of infants

true

buffers resist abrupt and large changes in the pH of the body by releasing or binding ions.

true

current information theorizes that omega-3 fatty acids decrease the risk of heart disease

true

depending on function state of the bladder, transitional epithelium may resemble stratified squamous or stratified cuboidal epithelium

true

diffusion is always from areas of greater to areas of lesser concentration

true

during the resting phase of hair growth, the matrix is inactive and the follicle atrophies

true

emulsions and colloids are the same thing

true

endothelium covers and lines internal cavities such as the pleural and peritoneal cavities

true

epithelial tissues always exhibit polarity; that is, they have free surface and a basal surface

true

functions of connective tissues include binding, support, insulation, and protection

true

glucose is an example of a monosaccharide

true

goblet cells are found with pseudostrified ciliated columnar epithelium

true

imaging is useful in discovering obstructed blood supplies in organs and tissues

true

it is important for any organs to maintain its boundaries, so that its internal environment remains listing from the external environment surrounding it.

true

lungs carry out an excretory function

true

microtubules are hollow tubes made of subunits of the protein tubulin

true

mixtures are combinations of elements or compounds that are physically blended together but are not bound by chemical bonds.

true

no chemical bonding occurs between the components of a mixtures

true

only one cell type in the human body has a flagellum

true

regardless of the variable being regulated, all homeostatic control mechanisms have at least 3 interdependent components.

true

simple cuboidal epithelia are usually associated with secretion and absorption

true

smooth muscle cells possess central nuclei but lack striations

true

squamous cells are flattened and scalelike when mature.

true

the atomic weight is only an average of relative weights of an atom and its isotopes, and it may vary from the weight of a specific isotope

true

the epigastric region is located superior to the umbilical region

true

the fact that no chemical bonding occur between the components of a mixtures is the chief difference between mixtures and compounds

true

the lower the pH, the higher the hydrogen ion concentration.

true

the most dangerous skin cancer is cancer of the malanocytes

true

the orderly sequence of the phases of mitosis is prophase, metaphase, anaphase, and telophase

true

the outermost sheath of a hair follicle is the connective tissue root sheath

true

the pH of body fluids must remain fairly constant for the body to maintain homeostasis

true

the protein found in large amounts in the outermost layer of epidermal cells is collagen

true

without some sort of negative feedback mechanism, it would be impossible to keep our body chemistry in balance.

true

the apocrine sweat glands are fairly unimportant in thermoregulation

true (because they secrete oils and not sweat, endocrine are sweat)

Alpha particle, although relatively weak energy particles, are second only to smoking as a cause of lung cancer

true(alpha particles are toxic)