During a discussion on cellular components and their function, a student asked the instructor the purpose of messenger RNA (mRNA). Of the following, which is the most accurate answer?
A)
Transports amino acids to the site of protein synthesis
B)
Acts as an inner nuclear support membrane for a rigid network of protein filaments that bind DNA to the nucleus
C)
Performs an active role of protein synthesis, where mRNA molecules direct the assembly of proteins on ribosomes to the cytoplasm
D)
Assists cells in forming neoplastic progression by altering the response of chromatin in the nuclear matrix
Question 2
A community health nurse is working with an 81-year-old female client who states that she has made a concerted effort throughout her life to protect her skin from the sun and regularly applies topical moisturizers.
The client is lamenting the fact that her skin's appearance has nonetheless deteriorated in recent years. Which of the following statements best captures a fact that the nurse should take into consideration when crafting a response to the client?
A)
The epidermal layer of the skin inevitably thins as part of the normal aging process, lending a transparent appearance to the skin.
B)
Skin becomes weaker and less elastic in older adults because of the rearrangement of fibrin and keratin.
C)
Skin becomes more fragile and prone to hematomas because of impaired vascularity.
D)
Output of sebaceous glands declines, with accompanying reductions in sweat production.
Brain mass as a function of body mass in mammals.
Components of a computer system.
Testing motor function of cranial nerve VII - Raise eyebrows
Periodic Function
Derivative of Reciprocal Trig Function
Posterior pituitary function