EXAM QUESTIONS AND CORRECT ANSWERS |
GRADED A+ | VERIFIED ANSWERS | BRAND NEW
VERSION!
The nucleus _________, which is essential for function and survival of
the cell. ---------CORRECT ANSWER-----------------contains the genetic
code
Although energy is not made in mitochondria, they are known as the
"power plants" of the cell because they: ---------CORRECT ANSWER-------
----------extract energy from organic compounds
Although the basic structure of the cell plasma membrane is formed by
a lipid bilayer, most of the specific membrane functions are carried out
by ---------CORRECT ANSWER-----------------bound and transmembrane
proteins
To effectively relay signals, cell-to-cell communication utilizes chemical
messenger systems that ---------CORRECT ANSWER-----------------release
secretions into extracellular fluid
,Aerobic metabolism, also known as oxidative metabolism, provides
energy by ---------CORRECT ANSWER-----------------combining hydrogen
and oxygen to form water
Exocytosis, the reverse of endocytosis, is important in _________ into
the extracellular fluid ---------CORRECT ANSWER-----------------removing
cellular debris and releasing synthesized substances
The process responsible for generating and conducting membrane
potentials is ---------CORRECT ANSWER-----------------diffusion of current-
carrying ions
Epithelial tissues are classified according to the shape of the cells and
the number of layers. Which of the following is a correctly matched
description and type of epithelial tissue? ---------CORRECT ANSWER-------
----------Glandular epithelium: arise from surface epithelia and
underlying connective tissue
,Connective tissue contains fibroblasts that are responsible for ---------
CORRECT ANSWER-----------------synthesis of collagen, elastin, and
reticular fibers
Although all muscle tissue cells have some similarities, smooth muscle
(also known as involuntary muscle) differs by: ---------CORRECT
ANSWER-----------------having dense bodies attached to actin filaments
Which of the following aspects of the function of the nucleus is
performed by ribsosomal RNA (rRNA) ---------CORRECT ANSWER-----------
------Providing the site where protein synthesis occurs
Breakdown and removal of foreign substances and worn out cell parts
are performed by which of the following organelles? ---------CORRECT
ANSWER-----------------Lysosomes
Impairment in the function of peroxisomes would result in ---------
CORRECT ANSWER-----------------accumulation of free radicals in the
cytoplasm
, After several months of trying to conceive, a couple is undergoing
fertility testing. Semen analysis indicates that the mans sperm have
decreased motility, a finding that is thought to underlie the couples
inability to become pregnant. Which of the following cellular
components may be defective within the mans sperm? ---------CORRECT
ANSWER-----------------Microtubules
Which of the following statements is true of glycolysis ---------CORRECT
ANSWER-----------------Glycolysis occurs in cells without mitochondria
Which of the following membrane transport mechanisms requires the
greatest amount of energy? ---------CORRECT ANSWER-----------------
Vesicular transport
A male patient with a diagnosis of type 1 diabetes mellitus is
experiencing hyperglycemia because he lacks sufficient insulin to
increase the availability of glucose transporters in his cell membranes.
Consequently, his cells lack intracellular glucose and it accumulates in
his blood. Which of the following processes would best allow glucose to
cross his cell membranes? ---------CORRECT ANSWER-----------------
Facilitated diffusion