Unit Two Exam: Chapters 8-11 Flashcards
(40 cards)
What statement about carbohydrates is true?
A- All carbohydrates are easily digestible
B- They transport substances into and out of cells
C- They are the building blocks of proteins
D- They are the most important energy source for the body
D- They are the most important energy source for the body
What best describes hemoglobin?
A- A structural protein
B- A transport protein
C- A hormone
D- A regulatory protein
B- A transport protein
In circulating blood, cholesterol is attached to _________ in order to form ________.
A- lipids; triglycerides
B- sugars; steroids
C- proteins; lipoproteins
D- proteins; ketones
C- proteins; lipoproteins
Which of the following is a type of fiber?
A- Cellulose
B- Lipase
C- Trypsin
D- Isoflavone
A- Cellulose
Which of the following is NOT a dietary macromineral?
A- Sulfur
B- Potassium
C- Magnesium
D- Copper
D- Copper
Which of the following vitamins is water soluble?
A- Vitamin A
B- Vitamin B
C- Vitamin K
D- Vitamin E
B- Vitamin B
In diabetes mellitus, there is an overproduction of what substance?
A- Ketones
B- Glycogen
C- Vitamin D
D- Lipoproteins
A- Ketones
Insufficient dietary fiber can cause which condition?
A- Diarrhea
B- Constipation
C- Decreased mineral absorption
D- All of the above
D- All of the above
In eukaryotes, the cell’s genetic information is contained in which of the following structures?
A- The ribosomes
B- The lysosomes
C- The chromosomes
D- The nuclear membrane
C- The chromosomes
Which of the following statements apply to haploid cells?
A- They are found in the gonads
B- They are the cells that make up most of the tissues of the body
C- They contain no nucleus
D- They have two copies of each chromosome
A- They are found in the gonads
What can be observed most readily during the gross examination of an animal?
A- Its chromosomal number
B- Its genotype
C- Its heredity
D- Its phenotype
D- Its phenotype
The four bases found in RNA are adenine, guanine, cytosine, and ___________.
A- Phosphate
B- Ribosine
C- Uracil
D- Guanidine
C- Uracil
Which of the following is a type of RNA found in eukaryotic cells?
A- mRNA
B- rRNA
C- tRNA
D- None of the above
E- All of the above
E- All of the above
What is the purpose of mitosis?
A- To clone the DNA fragments
B- To provide for growth and replace worn out cells
C- To provide the chemicals necessary to construct the ribosomes
D- To isolate genes
B- To provide for growth and replace worn out cells
Which of following base pairs are found in DNA?
A- Guanine-Adenine
B- Guanine-Cytosine
C- Guanine-Thymine
D- Guanine-Guanine
B- Guanine-Cytosine
What biomolecule carries the cell’s genetic information across the nuclear membrane?
A- DNA
B- mRNA
C- rRNA
D- tRNA
B- mRNA
Which of the following processes does NOT occur in the nucleus?
A- Replication
B- Transcription
C- Mutation
D- Translation
D- Translation
Transfer RNA is involved in which step of protein synthesis?
A- Mitosis
B- Transcription
C- Translocation
D- Translation
D- Translation
Restriction enzymes are used to __________the DNA fragments.
A- Separate
B- Detect
C- Clone
D- Cut
D- Cut
What is the product of transcription?
A- RNA
B- DNA
C- Protein
D- Enzyme
A- RNA
What are restriction enzymes used for in molecular biology?
A- They allow scientists to cut the DNA into shorter fragments
B- They chemically modify the bases present in the DNA
C- They separate the DNA into single strands
D- They introduce some pieces of foreign DNA into a gene
A- They allow scientists to cut the DNA into shorter fragments
The polymerase chain reaction (PCR) is used to:
A- cut the DNA into fragments
B- Clone the DNA fragments
C- Isolate genes
D- Separate the DNA fragments
B- Clone the DNA fragments
What best describes transgenesis?
A- The introduction of foreign DNA in the genome of an animal
B- The crossing of animals from different strains
C- The introduction of RNA to replace DNA in the nucleus
D- The removal of some of the normal genes in an animal cell
A- The introduction of foreign DNA in the genome of an animal
For producing gene-targeted animals, the dosage and timing of the hormone injections to produce superovulation must take into consideration which of the following factors?
A- The staff schedule
B- The strain of the stud
C- The biosafety level in use at the facility
D- The strain of the donor female
D- The strain of the donor female