Match the form of RNA with its function: rRNA
A)Carries genetic instructions from the nucleus to the site of protein synthesis
B)Can control, or inhibit, certain genes by interfering or suppressing certain mRNAs
C)Combines in a complex with proteins to make the large and small subunits of a ribosome
C)Combines in a complex with proteins to make the large and small subunits of a ribosome
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Vitamin B12 is poorly absorbed in the absence of
A. intrinsic factor. B. erythropoietin. C. extrinsic factor. D. folic acid.
A thickened area of scar tissue that is covered by a shiny, smooth epidermal surface is called a(n)
A) granulation tissue. B) scab. C) keloid. D) callus. E) abrasion.
Answer the following statements true (T) or false (F)
1. Solutes, regardless of size, are able to move freely between compartments because water carries them along the osmotic gradients. 2. The thirst center in the brain is located in the hypothalamus. 3. Dehydration can be caused by endocrine disturbances such as diabetes mellitus or diabetes insipidus. 4. It is impossible to overhydrate because people need as much water as they can drink to carry out ordinary body functions. 5. Water imbalance, in which output exceeds intake, causing an imbalance in body fluids, is termed dehydration.
When precapillary sphincters are contracted and closed, blood flows through the shunts and bypasses the tissue cells in that region
Indicate whether the statement is true or false