Exam 650 Questions with 100% Verified Correct
Answers Guaranteed A+ Verified by Professor
_____ refers to a reaction that occurs when a biomacromolecule is degraded into two or
more monomers and, as a part of the reaction, a molecule of water is gained. -
CORRECT ANSWER: Hydrolysis
______ is characterized by a ligand traveling a short distance to the target cell. This
type of signaling is important in development and for the secretion of growth factors. -
CORRECT ANSWER: Paracrine signaling
_______ is the process of an antibody binding to the antigen of a pathogen and
preventing it from binding to host cells, while _________ is the process of 'tagging" a
pathogen for removal by a phagocytic cell. - CORRECT ANSWER: Neutralization;
opsonization
________ involves the transmission of neurotransmitters, released from a pre-synaptic
cell, across a synaptic cleft where they bind to the post synaptic cells . - CORRECT
ANSWER: Synaptic signaling
________ is a metabolic pathway that occurs in both fermentation and aerobic
respiration - CORRECT ANSWER: Glycolysis
________ is the catabolic process of breaking down glucose for energy and can be
divided into two main forms. - CORRECT ANSWER: Fermentation
________ occurs when an input of energy is required to move substances through the
membrane. - CORRECT ANSWER: Active transport
,A _____ is synthesized during G2 which is a region of the cell that is composed of
filament and microtubule fibers that function to organize microtubules for cell division. -
CORRECT ANSWER: Centrosome
A baby is born and the doctor pronounces the weight as 7 pounds 0 ounces. Using the
metric system, how will this value appear in the infant's medical chart? - CORRECT
ANSWER: 1 lbs = 2.2kg
7/2.2 = 3.18kg
A cell and it's extracellular environment are in _____ and ______ equilibrium. -
CORRECT ANSWER: 1. Electrical
2. chemical
A cell containing 22 autosomes and 1 sex cell is what kind of cell? - CORRECT
ANSWER: Gamete, or sex cell
A cell containing 44 autosomes and 2 sex cells is what kind of cell? - CORRECT
ANSWER: Somatic cell
A H+ (protons) move down its gradient, the only place the proton can cross through the
membrane is at _______ sites. - CORRECT ANSWER: ATP synthase
A ligand: (choose all that apply) - CORRECT ANSWER: 1. Can be a variety of different
molecules
2. Show specificity for target receptors
3. Acts as a "message" for the target cell
A light microscope has an eye piece magnification of 10X, and the objective lens is set
to 30X. What is the total magnification? - CORRECT ANSWER: 300X
,A phosphorylation cascade is characterized by _______ phosphorylation - CORRECT
ANSWER: Sequential
a. Carbohydrates contain what three elements?
b. What is the ratio of hydrogen to oxygen in a carbohydrate? c. What is the difference
between a carbohydrate and a hydrocarbon? - CORRECT ANSWER: a. CHO
b. 2:1
c. A hydrocarbon has only H and C and carbs have HCO. Hydrocarbons are not
functional groups.
a. explain how facilitated diffusion is the same as active transport and
b. how it is different in regard to the concentration gradient, cell membrane proteins and
energy. - CORRECT ANSWER: a. facilitated diffusion and active transport both utilize
carrier and channel proteins to move molecules across the gradient
b. The key difference between active transport and facilitated diffusion is that the active
transport occurs against the concentration gradient hence, utilizes energy to transport
molecules across the membrane while the facilitated diffusion occurs along the
concentration gradient hence, does not utilize energy to transport molecules across the
membrane.
a. Name the three parts of a nucleic acid nucleotide.
b. What are the particular types of each of these that are found in DNA and what are the
corresponding types that are found in RNA? - CORRECT ANSWER: a. sugar,
phosphate group, nitrogenous base
b. DNA- deoxyribose- phosphate group- adenine, guanine, cytosine, thymine
RNA- ribose -phosphate group- adenine, guanine, cytosine, uracil
, abdominal cavity - CORRECT ANSWER: contains primarily the major organs of
digestion
Active transport is vital for moving _______ (sugars, lipids, and amino acids) into the
cell, as most _______ into the cell. - CORRECT ANSWER: 1. Essential nutrients
2. Cannot diffuse
Adding stains or dyes to specimens increases: - CORRECT ANSWER: Contrast
After fertilization a ______ is formed. - CORRECT ANSWER: Zygote
All G proteins share the role of _______ _____ to _____ - CORRECT ANSWER:
hydrolyzing (breaking down), GTP, GDP
All of the following are electron carriers within the electron transport chain EXCEPT: -
CORRECT ANSWER: Water
All organisms of Animalia share what characteristics? Name at least three. - CORRECT
ANSWER: Multicellular, heterotrophic, and lack a cell wall
An example of simple diffusion in the human body is: - CORRECT ANSWER: Movement
of gases (o2 and CO2) across the cell membrane
Animalia can be classified in terms of development after fertilization and may be ______
or _______. - CORRECT ANSWER: 1. Protostomes
2. Deuterostomes
Animals are often grouped by ______ which may be spherical, radial, or bilateral. -
CORRECT ANSWER: Body plans