Biology Help 1. What type of cell releases histamine during an inflammatory resp
ID: 72828 • Letter: B
Question
Biology Help
1. What type of cell releases histamine during an inflammatory response?Select one:
a. Buccal Cell
b. Mast Cells
c. Erythrocytes
d. Leukocytes
2.What can be done with an fMRI that cannot be done with an MRI?Select one:
a. detects active brain regions
b. determines ages of fossils
c. detects brain tumors
d. detects radioactive spills
e. measures the length of chemical bonds
3. Which molecule is captured from the air by plants during the Calvin Cycle?Select one:
a. CO
b. CO2
c. N3
d. N
e. C
4.What is distinctive, and allows the formation of Biological molecules, about the way that Carbon forms chemical bonds?Select one:
a. Carbon does not form bonds with other molecules
b. Carbon forms bonds with as many as four molecules
c. Carbon forms bonds with as many as two other molecules
d. Carbon forms bonds with one other molecule, at the most
e. Carbon forms bonds with as many as three other molecules
5.If the body has a specific response to an invader, this response is known as a(an) _______ immune response. Select one:
a. pathogenic
b. facultative
c. innate
d. devicive
e. adaptive
6. Animals that eat plant material, such as grass and leaves, rely on their intestinal ________ to break down the cellulose.Select one:
a. protists
b. enzymes
c. bacteria
d. fungi
7.Which of the following would be found in the mitochondrion?
(Check all that apply) Choose all that are correct
a. ATP
b. FADH2
c. ADP
d. Glucose
e. NAD+
f. NADH
8.Which of the following is found only in Eukaryotic cells?Select one:
a. enzymes
b. a nuclear membrane
c. DNA
d. a plasma membrane
e. ribosomes
9.The molecule responsible for the green color of plants is ______Select one:
a. water
b. hemoglobin
c. rubisco
d. chlorophyll
e. green fluorescent protein
10. The following is an example of a respiratory surface:Select one:
a. nasal cavity of a lizard.
b. bat wings.
c. diaphragm of a tree frog.
d. skin of an earthworm.
e. epiglottis of a fruit fly.
11.Which of the following techniques allows separation of DNA fragments on the basis of size? Select one:
a. PCR
b. the use of DNA probes
c. gel electrophoresis
d. DNA profiles
12.Enthalpy is a measure of an increase in _________
Select one:
a. orderliness.
b. potential energy.
c. randomness.
d. high-level energy.
e. kinetic energy.
13.What is distinctive about primary vs. secondary protein structure?Select one:
a. amino acid sequence vs. protein folding
b. protein folding vs. subunit assembly
c. chemical bonding vs. protein folding
d. chemical bonding vs. subunit assembly
14.Animals that lack any type of symmetry are:Select one:
a. arthropods.
b. sponges.
c. chordates.
d. cnidarians.
e. nematodes.
15.Why is there more CO2 in the air that you breathe out, than in the air that you inhale? Select one:
a. CO2 is a by product of mitochondrial oxidative phosphorylation
b. CO2 is a product of mitochondrial oxidation
c. CO2 is a higher energy molecule than O2
d. CO2 is produced in the mitochondrial intermembrane
16. If a a woman who is NOT a carrier for colorblindness has a son with a man who DOES have X-linked colorblindness, the son will likely ______ Select one:
a. have normal sight but be a carrier for colorblindness
b. have normal sight
c. have two X chromosomes
d. be colorblind
e. have two Y chromosomes
17.Which of the following could NOT be accomplished by a catalyst? (check all that apply)
Choose all that are correct
a. changing the energy level of the reactants
b. speeding up a reaction rate
c. changing the energy level of the products
d. lowering the activation energy of a reaction
Explanation / Answer
1)Answer is b. Mast cells. Histamines which are involved in inflammatory response are produced by mast cells.
2)Answer is a. Detects active brain regions. Functional magnetic resonance imaging (fMRI) is technique which is used to measure and map the brain activity and to understand its normal functioning.
3)Answer is b. CO2. During Calvin cycle or Calvin Benson Cycle, plants capture carbon dioxide.
4)Answer is b. Carbon forms bonds with as many as four molecules. The fundamental component for all the macromolecules is carbon, and it can form covalent bonds with as many as four different atoms making it suitable to form the basic structural component.
5)Answer is Adaptive. In adaptive immune response both B and T lymphocytes are involved and is antigen specific and will react only with that antigen against which it has produced.
6)Answer is c. Bacteria. These animals rely on bacteria to digest the cellulose present in their food.
7)Answer is a,b,c,e and f.
8)Answer is b. Nuclear membrane is found only in eukaryotic cell, where as it is absent in prokaryotic cell.
9)Answer is d. Chlorophyll. It is the pigment which is responsible for the green color of the plant.
10)Answer is d. skin of an earthworm. Earthworm do not have lungs and respire using their skin, through which oxygen diffuses inside.
11)Answer is gel electrophoresis. It is one of best technique available to separate DNA fragments based on their size on gel.
12)Answer is c. Randomness. Enthalpy is measure of disorder or randomness in a system.
13)Answer if d. Chemical bonding vs subumit assembly
14)Answer is b. Sponges. The phylum Porifera have no symmetry.
15)Answer is a. CO2 is a by product of mitochondrial oxidative phosphorylation.
16)Answer is b. the son will have normal sight. He receives y chromosome from father, so he will not inherit the colorblindness
17)Answer is c. changing the energy level of the products.
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