Exam 2

The ABCDE rule is used to

check for the most malignant type of skin cancer

which type is false concerning the dermis?

is avascular

A needle would pierce the epidermal layer of the forearm in which order

Corneum, Granulosum, Basale

A many-layered epithelium with cuboidal basal cells and flat cells at its surface would be classified as_____

Stratified squamous

Which is false concerning connective tissue?

the three fibers found in areolar connective tissue are keratin, collagen, and elastic

The first in tissue repair involves____

inflammation

Which type of muscle is involuntary, striated, and uninucleate?

cardiac muscle

Select the correct statement regarding epithelia

Stratified epithelia are present where protection from abrasion is important

Connective tissue matrix is:

Composed of fibers and ground substance

What is the first threat to life from a massive third-degree burn?

Catastrophic fluid loss

Which of the following is incorrect concerning the cytoskeleton?

intermediate filaments from the core of microvilli

If the nucleotide or base sequence of the DNA strand used as a template for messenger RNA synthesis is ACGTT, then what would be the sequence of bases in the corresponding mRNA?

UGCAA

What is the main function of the mitochondria?

To make ATP

Which is false concerning the smooth ER?

Is enclosed by a double-membrane and contains its own DNA

Once solid material is phagocytized and taken into a vacuole, which of the following statements best describes what happens?

A lysosome combines with the vacuole and digests the enclosed solid material

Mitosis______

Creates genetically identical cells

Which of the following describes translation?

Complementary base-pairing between a codon on the mRNA and a anticodon on a tRNA ensures that the correct amino acid is added to the growing protein/polypeptide chain

In which stage of mitosis do the sister chromatids separate from one another and move to opposite ends of cell?

Anaphase

Which of the following proteins would not be produced by the rER?

an enzyme used for anaerobic respiration in the cytoplasm

A gene can be defined as______

A segment of DNA that carries the instructions for one protein/polypeptide chain

Which type of cell junction acts as “spot weld” to provide anchoring strength to reduce the chance of tearing when the membrane is subjected to great mechanical stress?

Desmosome

Which of the following wouldn’t be a constituent of a plasma membrane?

messenger RNA

Which of the following statements is correct regarding net diffusion?

the greater the concentration gradient, the faster the rate

Passive membrane transport processes includes____

diffusion of a substance down its concentration gradient

Which membrane component is mostly responsible for the ability of immune cells to recognize “self” vs “non-self” and reject a transported tissue/organ?

Glycocalyx

If cells are placed in a hypotonic solution containing a solute to which the membrane is impermeable, what could happen?

the cells will gain water and possibly lyse

Crenation is likely to occur in blood cells immersed in _____

a hypertonic solution

In what way does the interior surface of a cell membrane of a resting (nonconducting) neuron differ from the external environment? The interior is ____

negatively charged and contains less sodium

Which of the following is a principle of the fluid mosaic model of cell membrane structure?

phospholipids form a bilayer that is largely impermeable to water-soluble molecules

Which transport process would be used by white blood cell to pull in a bacterial cell and destroy it?

Phagocytosis