Exam questions Flashcards
Which of the following allows implantation of the blastocyst
Hatching
Describe what is Cardiac muscle tissue?
Branched and has intercalated disks
The interaction between RANK and RANKL activates the differentiation of which cell and promotes what outcome?
Osteoclasts, bone resorption
Which of the following is true concerning human skeletal muscle
Triads
An entire skeletal muscle is invested by a connective tissue element known as?
Epimysium
The urinary bladder needs to distend and then return to its original shape. Which of the following epithelia is associated with that organ?
Transitional
Which type of Glial cell makes myelin in the PNS
Schwann cell
Which of the following is best described as apocrine gland?
Mammary gland
Which of the following occurs during embryogenesis week 2
Formation of bilaminar disc (epiblast and hypoblast)
Which cell in fibrous connective tissue is primarily responsible for making extracellular matrix?
Fibroblasts
On the distal ends of the epiphysis is lined by articular cartilage, what type of cartilage is this classified as?
Hyaline cartilage
Which part of a neuron typically collects the most information from other neurons?
Dendrite
Influx of ——– into the sarcoplasm promotes muscle contraction
Ca2+
In a healthy patient, the most populous leukocytes are?
Neutrophils
Cells placed in an isotonic solution will
Remain the same size
Enzymes work by
Decreasing the activation energy
Which of the following base pairing events results in the formation of the strongest bond?
Cytosine bound to Guanine
Are lipids hydrophobic and phosphates
Yes
Which organelle is essential for cells to be able to replicate
Nucleus
Homeostasis can be described as?
The maintenance of relatively stable internal environment
True or false? In Na+/ Glucose transport, Na+ moves into the cell along its concentration gradient and glucose moves into the cell against its concentration gradient
Correct
The protein coding region of gene begins with
The first AUG or start codon encountered by the ribosome
In cell death involving pyknosis, chromatin condensation and fragmentation as well as engulfment by resident phagocytes
Apoptosis
How many chromosomes are found in a healthy human occyte
23
For fatty acid synthesis to occur
Pyruvate dehydrogenase must be inactivated
The demand for nucleotide biosynthesis is high during which stage of the cell cycle?
S-phase
Which enzyme is responsible for the synthesis of mRNA during transcripition?
RNA polymerase
Proteins are made up of
Amino acids
In an allergic reaction response to pollen which proinflammatory medicators are released?
Basophils and mast cells
What is the primary function of Gap junctions in epithelial tissue
allowing direct communication between adjacent cells
Do all muscle types use actin and myosin for contraction
Yes
Which of the following represent a difference in the matrix of bone and cartilage
The matrix of bone is penetated by blood vessles and the of cartilage is not
Which cell type is derived from lymphoid stem cells?
B cells
Which cell is most abundant in blood
Erythrocytes
What will happen to a RBC into a hypertonic solution
Crenate (shrink)
If 2 molecules of glucose underwent glycolysis anaerobic environment, how many molecules of pryuvate woulf then be converted to acetyl coA and enter the Krebs/ TCA cycle
0
Due to the anaerobic conditions, no pyruvate will enter the TCA cycle
