BIOS 251 Midterm Actual Exam Latest Update

BIOS 251 Midterm Actual Exam Latest Update

• 110 Questions and 100% Verified

Correct Answers Guaranteed A+

• major elements that make up the majority of molecules in the body - CORRECT

ANSWER: Oxygen, carbon, hydrogen, nitrogen

4 tissue types - CORRECT ANSWER: epithelial, connective, muscular, nervous

Abdominal cavity - CORRECT ANSWER: -contains stomach, spleen, liver, gallbladder, small intestine, and most of large intestine -the serous membrane of the abdominal cavity is the peritoneum

Abdominopelvic cavity - CORRECT ANSWER: subdivided into abdominal and pelvic

cavities

Acid - CORRECT ANSWER: dissociates into one or more hydrogen ions, donates a

proton (H+ )

Adenosine Triphosphate (ATP) - CORRECT ANSWER: -the principal energy-storing

molecule in the body, "energy currency"

Adherens junctions - CORRECT ANSWER: -provide strong mechanical attachments

between adjacent cells -hold cardiac muscle cells tightly together as the heart expands and contracts.-hold epithelial cells together.

Anabolism - CORRECT ANSWER: building up, making a new molecule, use energy

Anaphase (mitosis) - CORRECT ANSWER: centromeres of chromosomes split and

sister chromatids move toward opposite poles of the cell

Anatomy - CORRECT ANSWER: "cutting things up"

• structure of the body and how the parts relate to each other in space
• uses medical terminology where roots, prefixes and suffixes are derived from Greek or

Latin

Anterior (ventral) - CORRECT ANSWER: Close to front of the body

Apocrine - CORRECT ANSWER: -secretory product released apical cytoplasm and

apical plasma membrane with it

-ex: lipids from mammary glands

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Atoms - CORRECT ANSWER: -the smallest units of matter that retain the properties and characteristics of an element -composed of protons, neutrons, and electrons

Base - CORRECT ANSWER: dissociate into hydroxide ions and cations, remove H+

from solution (OH- + H + = H2O)

Catabolism - CORRECT ANSWER: breaking apart molecules, release energy

Cell junctions - CORRECT ANSWER: Cells can be held together in a number of ways.These points of contact between cells are called cell junctions

Centrosome (centrioles) - CORRECT ANSWER: -one centrosome is located near the

nucleus -contains a pair of centrioles at right angles to each other -surrounded by pericetriolar material (mitotic spindle origin) -replicate during cell division

Chemical reaction - CORRECT ANSWER: occurs when new bonds are formed or old

bonds are broken

Chromatin - CORRECT ANSWER: unwound DNA, actively producing mRNA

Cilia - CORRECT ANSWER: move fluid across the surface of the tissue in one

direction

Composition of DNA - CORRECT ANSWER: Nitrogenous base, pentose sugar,

phosphate group (= nucleotide)

Concentration gradient - CORRECT ANSWER: the difference in the concentration of a chemical between one side of the plasma membrane and the other

Contralateral - CORRECT ANSWER: On opposites sides of the body

Covalent bonds - CORRECT ANSWER: -two or more atoms of same or different

element share electrons -most common bond in body, very strong; single, double, and triple bonds

Cranial cavity - CORRECT ANSWER: -Formed by cranial bones

-contains brain

Cytokinesis - CORRECT ANSWER: cleavage furrow forms and eventually the

cytoplasm of the parent cell fully splits -when this is complete, interphase begins

Deep - CORRECT ANSWER: Farther from the surface of the body

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