Tag: science & technology

The shortcut ALT + = (holding Alt and pressing the equals key) inserts a SUM AutoSum formula in Excel. This automatically selects the range of cells above or to the left of the current cell and inserts the SUM function, making it quick to add up columns or rows of numbers.

The shortcut CTRL + SHIFT + " (double quote) copies the value (not the formula) from the cell directly above into the current cell. This is different from copying the formula - it copies only the resulting value, which is useful when you want to preserve a calculated result.

The shortcut CTRL + ' (apostrophe/single quote) copies the formula from the cell directly above into the current cell. This is different from copying just the value - it copies the entire formula so that the current cell will calculate using the same logic, adjusting relative references if needed.

Pressing F9 in Excel forces a recalculation of all formulas in all open workbooks. This is useful when calculation is set to manual mode, or when you want to ensure all values are updated after changing data. It calculates every sheet across every currently open workbook.

SHIFT+F9 is the correct Excel keyboard shortcut to recalculate only the current worksheet. F9 recalculates all open workbooks, which is different. SHIFT+F3 inserts a function, and CTRL+F6 switches to the next workbook window.

ESC is the correct keyboard shortcut to cancel an entry in Excel without committing it to the cell. This works both in the cell itself and in the formula bar. SHIFT+HOME and SHIFT+END are for text selection within the entry, and CTRL+3 is not a standard Excel shortcut for this purpose.

Hematological malignancies (blood cancers) affect the blood, bone marrow, and lymphatic system including lymph nodes. These cancers include leukemias, lymphomas, and myelomas which originate in these tissues and disrupt normal blood cell production. Blood, bone marrow, and lymph nodes are all integral parts of the hematopoietic system.

Hematological malignancies are cancers of the blood-forming tissues, primarily blood and bone marrow. Blood (A) and bone marrow (B) are correct as they are the sites of blood cell production and maturation. Liver (C) is not a hematological organ, and D (All the above) would only be correct if C were also correct.

Both Chronic Lymphocytic Leukemia (CLL) and Chronic Myelogenous Leukemia (CML) are cancers of white blood cells. CLL affects the lymphoid lineage while CML affects the myeloid lineage, but both involve malignant proliferation of white blood cells.

Acute leukemia is characterized by rapid proliferation of immature blast cells in the bone marrow. While white blood cell count may be elevated, the defining feature is the accumulation of immature, non-functional cells (blasts) rather than just an increase in normal WBCs or RBCs.