A&P Learning Catalytics Test 2

All of the following can affect enzyme activity. temperature pH enzyme concentration cofactors All of these are correct

All of these are correct

Which of the following is true about epithelia? Simple epithelia are commonly found in areas of high abrasion. Stratified epithelia are associated with filtration. Endothelium provides a slick surface lining all hollow cardiovascular organs. Pseudostratified epithelia are commonly keratinized.

Endothelium provides a slick surface lining all hollow cardiovascular organs.

________ attach skeletal muscles to bones, and ________ connect one bone to another. Ligaments; tendons Ligaments; aponeuroses Tendons; ligaments Aponeuroses; tendons Reticular tissues; tendons

Tendons; ligaments

How would the lack of a cofactor for an enzyme affect that enzyme's function? The enzyme's function would not be altered. The enzyme would function more slowly. The enzyme would function more quickly. The enzyme would not be able to function. The enzyme would cease to function after reaching a maximum rate.

The enzyme would not be able to function.

The mRNA sequence that is complementary to the sequence ATC on DNA is ATC. TAG. UAG. AUG. AUC.

UAG

Substrate molecules bind to enzymes at the ________ sites. amino active carboxyl reactant neutral

active

Generally speaking, connective tissues are largely non-living extracellular matrix. Which of the following is an EXCEPTION? adipose blood bone areolar

adipose

Intercalated discs and pacemaker cells are characteristic of smooth muscle tissue. cardiac muscle tissue. skeletal muscle tissue. all types of muscle tissue. nerve tissue.

cardiac muscle tissue

Choose which tissue would line the uterine (fallopian) tubes and function as a "conveyer belt" to help move a fertilized egg towards the uterus. stratified squamous epithelium simple cuboidal epithelium ciliated simple columnar epithelium smooth muscle pseudostratified columnar epithelium

ciliated simple columnar epithelium

A needle would pierce the epidermal layers of the forearm in which order? basale, spinosum, granulosum, corneum basale, spinosum, granulosum, lucidum, corneum granulosum, basale, spinosum, corneum corneum, granulosum, spinosum, basale

corneum, granulosum, spinosum, basale

The two components of the integumentary system are the epidermis and dermis. cutaneous membrane and hypodermis. cutaneous membrane and accessory structures. integument and hypodermis epidermis and superficial fascia.

cutaneous membrane and accessory structures

Tissues that provide strength and support for areas subjected to stresses from many directions are tendons. ligaments. dense irregular connective tissues. reticular tissues. areolar tissue.

dense irregular connective tissues.

In a penetrating wound, ________ divide to produce mobile cells that repair the dermis. granulation cells dendritic cells macrophages fibroblasts muscle cells

fibroblasts

Which cell produces the protein fibers in areolar connective tissue? squamous cell adipocyte fibroblast chondroblast chondrocyte

fibroblasts

The triplet codes needed to specify a specific polypeptide chain are found in the: cytoplasm. gene. codon. anticodon. polypeptide itself

gene

Which type of connective tissue is found in the trachea and between the ribs and sternum? areolar hyaline cartilage elastic cartilage fibrous dense regular

hyaline cartilage

Water loss due to evaporation of fluid that has penetrated directly through the skin is termed ________ perspiration. sensible insensible latent active inactive variable

insensible

Variations in hair color reflect differences in the pigment produced by keratinocytes. melanocytes. dermal papillae. soft keratin. carotene cells chlorophyll cells

melanocytes

The nail body covers the nail root. nail bed. lunula. free edge. hyponychium.

nail bed

Inability to absorb digested nutrients and secrete mucus might indicate a disorder in which epithelial tissue? simple squamous transitional simple columnar stratified squamous

simple columnar

The term ________ means each enzyme catalyzes only one type of reaction. saturation specificity inertia activation monoreactive

specificity

Large quantities of keratin are found in the epidermal layer called the stratum corneum. stratum lucidum. stratum germinativum. stratum granulosum. stratum spinosum.

stratum corneum

Each of the following is a function of the integumentary system, except protection of underlying tissue. excretion of salts and wastes. maintenance of body temperature. synthesis of vitamin C. provision of sensation.

synthesis of vitamin C

As each codon arrives at the active site of a ribosome, it attracts another molecule containing the anticodon. This molecule is called: DNA. mRNA. rRNA. tRNA. RER.

tRNA