Shown below is a list of molecules that function in fruit fly development and a list of distribution patterns. Match the molecules to their normal distribution in fruit fly embryos.
|
|
(Put each letter to each Answer)
Two-dimensional gel electrophoresis is used to characterize the physical characteristics and expression levels of:
| A. |
proteins |
|
| B. |
lipids |
|
| C. |
microtubules |
|
| D. |
DNA polymorphisms |
|
| E. |
mRNA |
The end product of a multistep process that includes 1) digestion of genomic DNA by restriction enzymes, 2) ligation of this DNA into vectors, 3) transformation of bacteria with the recombinant DNA molecules, and 4) isolation of individual bacterial clones that carry this recombinant DNA.
| A. |
Genomic library |
|
| B. |
CD library |
|
| C. |
cDNA library |
|
| D. |
Gene expression |
|
| E. |
RNA library |
Long stretches of uninterrupted codons in genomic DNA are known as:
| A. |
open reading frames |
|
| B. |
amino acids |
|
| C. |
stop codons |
|
| D. |
translocations |
|
| E. |
point mutations |
In: Biology
|
A. |
beads-on-a-string structure |
|
B. |
pyrimidine |
|
C. |
proof for the semi-conservative model of DNA replication |
|
D. |
number of base pairs per turn of the double helix |
|
E. |
biochemical evidence of complementarity |
|
F. |
number of nanometers between stacked bases |
|
G. |
positive supercoiling |
|
H. |
transduction |
|
I. |
percentage of adenine in a DNA molecule if the percentage of thymine is 18% |
|
J. |
direction of new strand synthesis |
|
K. |
involves two hydrogen bonds |
|
L. |
site of chemical difference between DNA and RNA |
|
M. |
negative supercoiling |
|
N. |
radioisotope for labeling DNA |
|
O. |
revealed by X-ray crystalography |
|
P. |
test for dynamic changes in chromatin structure |
|
Q. |
site of actively transcribed genes |
|
R. |
double-ring base |
|
S. |
'attacks' phosphate group of incoming dNTP |
|
T. |
direction of polymerase movement in terms of the template orientation |
|
U. |
B-form secondary structure |
|
V. |
radioisotope for labeling proteins |
|
W. |
involves three hydrogen bonds |
|
X. |
transformation |
|
Y. |
formed by loops on a protein scaffold |
|
Z. |
site of DNA's acidic property |
|
AA. |
Barr body |
|
AB. |
DNA monomer |
|
AC. |
substrate of DNA polymerase |
|
AD. |
formed by attractive interactions between chromatosomes |
|
AE. |
differential enzymatic digestion of cell lysate |
|
AF. |
differential radioisotope labeling of proteins and DNA |
|
AG. |
percentage of adenine in a DNA molecule if the percentage of guanine is 18% |
Choices-
|
phosphate group |
2'-OH group, deoxyribonucleoside triphosphate, deoxyribonucleotide, adenine, guanine, Chargaff's rules, Avery, McLeod, McCarty experiment, Hershey-Chase experiment, 5'-to-3', 3'-to-5', N-15, S-35, G-C complementarity, change in phenotype due to uptake of foreign DNA, 10, 32, 45 complete helical turns in a 600 bp DNA molecule ,
|
causes compaction of DNA and promotes strand separation |
, 30 nm fiber, 300 nm fiber, euchromatin, heterochromatin ,
|
DNase I sensitivity, cytosine |
In: Biology
Describe one beneficial and one harmful way in which microorganisms interact with agricultural crops
In: Biology
All the living things in one area combined with the non-living parts of that environment is a/an:
Question 15 options:
|
|||
|
|||
|
|||
|
In: Biology
Describe the evidence for descent with modification (evolution) that Darwin presented in his book “The Origin of Species” in 1859. How well was the book received by scientists and the general public?
In: Biology
Describe how changes in the environment can alter expression?
In: Biology
We have discussed three methods of horizontal gene transfer. Correctly match the method with its name.
|
|
In: Biology
How does crossing 2 true-breeding individuals show which version of the trait is dominant?
In: Biology
In: Biology
6. Can a genetic mutation sometimes cause someone to grow an
extra arm?
__ true
__ false
7. Mutations are the changes to the nucleotide sequence of the
genetic material of an organism?
__ true
__ false
8. Mutations can not be caused by copying errors in the genetic
material during cell division?
__ true
__ false
9. Which of these factor(s) are associated with DNA damage?
A. Alkylating agents
B. UV
C. All of these
D. Free Radicals
In: Biology
Which tissues and organs are involved in the immune response, and how does each function.
In: Biology
Discuss at least 3 of the causes that have led to all the sea turtles being listed as endangered species. Your discussion should include the reasons why sea turtles are in decline, as well as steps being taken to help sea turtles recover from the cause
In: Biology
In: Biology
The choices describe possible scenarios and outcomes from Gram staining with standard stains (e.g., crystal violet and safranin). Match the scenario with the most likely outcome and explain why this occurs.
|
A. A gram-negative cell is stained, but the ethanol step is skipped. |
i. The cell will probably appear pink, which will not correctly indicate its cell wall structure. |
|
B. A gram-positive cell with a severely damaged cell wall is stained. |
ii. The cell will appear pink. |
|
C. A healthy gram-negative cell is stained. |
iii. The cell will appear purple/violet. |
|
D. A healthy gram-positive cell is stained. |
iv. The cell will probably appear purple/violet, which will not correctly indicate its cell wall structure. |
In: Biology
Describe how a temperate/lysogenic phage can contribute to disease, and give one example
In: Biology