What are some common science questions found on the TEAS?
Answer
1. Which of the following is responsible for carrying amino acids to ribosomes during protein synthesis?
a. mRNA
b. rRNA
c. DNA
d. tRNA
2. What is the primary role of the Na+/K+ pump in animal cells?
a. To generate ATP
b. To maintain the cell's osmotic balance
c. To allow molecules to enter the cell
d. To transport carbon dioxide out of the cell.
3. What is the difference between a monosaccharide and a disaccharide?
a. Monosaccharides are composed of two simple sugars, while disaccharides are composed of more than two simple sugars.
b. Monosaccharides are simple sugars that are made from amino acids, while disaccharides are made from fatty acids.
c. Disaccharides are composed of two simple sugars, and monosaccharides are simple sugars that cannot be broken down into simpler sugars.
d. Monosaccharides contain more carbon atoms than disaccharides.
4. Which of the following statements best describes the process of meiosis?
a. It results in the formation of two genetically identical diploid cells.
b. It is responsible for reducing the chromosome number in gametes.
c. It occurs in somatic cells to produce identical daughter cells.
d. It involves the division of the nucleus followed by cytoplasmic division.
5. What is the name of the genetic disorder caused by the presence of an extra chromosome 21?
a. Down Syndrome
b. Cystic Fibrosis
c. Huntington's Disease
d. Sickle Cell Anemia
6. Which of the following describes an individual with the genotype AaBb, where A and a represent alleles for one gene, and B and b represent alleles for another gene?
a. Homozygous for both traits
b. Heterozygous for both traits
c. Homozygous for one trait and heterozygous for the other
d. Heterozygous for one trait and homozygous for the other
7. Which of the following microorganisms lack their own metabolic pathways and can only reproduce inside of a host cell?
a. Bacteria
b. Fungi
c. Virus
d. Protozoa
8. Which of the following best represents Mendel's Law of Independent Assortment?
a. Alleles for a gene are inherited together because they are located on the same chromosome.
b. The inheritance of one gene does not affect the inheritance of another gene located on a different chromosome
c. A dominant allele will always be inherited over a recessive allele.
d. Both alleles for a gene will be passed on to the offspring.
9. Which of the following is used to determine a person's DNA sequence?
a. Genes
b. Ribosomes
c. Enzymes
d. Chromosomes
10. What is the phenotypic ratio of offspring in a monohybrid cross between two heterozygous individuals (Aa X Aa) for a single gene with complete dominance?
a. 3:1
b. 1:2:1
c. 1:1
d. 2:2
1. D 2. B 3. C 4. B 5. A 6. B 7. C 8. B 9. A 10. A