Here are the answers to your questions:
Question 1
An example of selective breeding would be
a breeding a cow with a bull who produces large muscular baby bulls
Question 2
Which direction and traits would a scientist who studies the genetic engineering of crops, and is working to create GMOs- most likely try to do to and find for the studied crop?
b How to create a crop with a higher yield and greater nutritional value?
Question 3
Select all of the results of biotechnology.
a the cloning of an identical species by the isolation of a cell's genes
c the use of gene therapy in humans and animals
e the creation and improvement of vaccines
f development of new plant species
Question 4
Select ALL of the parts of adenosine triphosphate:
a Ribose
b 3 Phosphates
c Adenine
Question 5
A substance that moves across a cell membrane without using the cell’s energy tends to move___________.
a toward the area where it is more concentrated
Question 6
What is the term for the cell's ability to maintain a stable internal balance?
d homeostasis
Question 7
Lipids are group of chemicals that include oils, waxes, phospholipids, and steroids.
True
Question 8
Genetic variation in bacterial populations does NOT result from
d meiosis.
Question 9
According to your Genetic Code Sheet, which of the following amino acid sequences corresponds to this mRNA strand?
CUC AAG UGC UUC
d leu- lys - cys - phe
Question 10
Assume that two strands of DNA have been separated and that the base sequence on one strand is TTGC. What is the sequence of bases on the complimentary strand?
a AACG
Question 11
Which of the following is the BEST explanation of the role of DNA and RNA in making proteins?
d DNA unwinds into two separate strands, and a complementary copy of each is produced during replication. During transcription, a DNA strand is used to produce a complementary strand of mRNA, with uracil taking the place of thymine. During translation, each set of three bases in the mRNA results in an amino acid being added to a chain, and a protein is formed.
Question 12
What would MOST LIKELY happen if the process in the nucleus is interrupted?
c DNA would not be decoded into an RNA molecule.
Question 13
One side strand of a DNA molecule read 3' ATC GAC CAT 5'. What would the complementary strand read?
c 5' TAG CCG GTA 3'
Question 14
Assume that two strands of DNA have been separated and that the base sequence on one strand is TTGC. What is the sequence of bases on the complimentary strand?
a AACG (this question is the same as Question 10)
Question 15
Why is tRNA called "transfer" RNA?
b It carries/transfers a specific amino acid to the ribosome during protein synthesis.
Question 16
A DNA strand that has the bases CTA GGT, has a complimentary strand with the bases ________.
c GAT CCA
Question 17
If a mutation changes a complete piece of DNA so that its sequence reads CGACCTCAA instead of CGACCTGAA, which would occur?
a a point mutation substitution resulting in a different protein
Question 18
What is regulated gene expression?
c the cell's ability to turn on and off genes at particular times
Question 19
Eukaryotic DNA is packed in a chromatin structure, making it harder than prokaryotic DNA to be transcribed. Which proteins are directly involved in the structure of eukaryotic DNA?
c histones
Question 20
In the chart, which amino acid is specified by the mRNA code CCC?
d proline
Question 21
Which question most likely led the scientists to choose bacterial cells for this process?
d Which organisms reproduce very quickly?
Question 22
A single bacterium divides through the process of ______________ and begins a new population. All the offspring bacteria have identical DNA. (which means no genetic diversity)
d binary fission
Question 23
Mustard gas removes guanine from DNA. For developing embryos, exposure to mustard gas can cause serious deformities because guanine
b is one of the four nitrogenous bases in DNA.
Question 24
Is the trait in the pedigree below dominant or recessive?
(Without seeing the pedigree, I can’t accurately answer this, but typically:)
c not enough information to tell
Question 25
Do you have a viral or bacterial or fungal infection? How do you know?
b You have a bacterial infection, as bacteria are simple prokaryotic cells - and you are not.