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- 1. Multiple Choice
The illustration below represents two specialized cells called gametes. Gametes are produced by the human male reproductive system.
Which of the following statements is correct?
Gametes are produced by mitosis.
Gametes are not sex cells.
Gametes are involved in transporting only RNA.
Gametes are involved in transporting DNA
- 2. Multiple Choice
Cell differentiation is critical during embryonic development. The process of cell differentiation results in the production of many types of cells, including germ, somatic, and stem cells. Cell differentiation is most directly regulated by —
ATP
DNA
lipids
sugars
- 3. Multiple Choice
Which description best explains the role of DNA in the differentiation of the cells within an organism?
Each cell has a different set of DNA that determines the traits of the cell and causes differentiation.
Each cell has the same DNA, so DNA does not play a role in differentiation.
Cells do not use the same sections of DNA in the same proportions, at the same time in development, which leads to differentiation.
DNA mutates differently in each cell depending on the environment causing each cell to differentiate over time.
- 4. Multiple Choice
What molecule is responsible for providing information to the ribosomes where proteins are built?
DNA, since it contains the genetic information to build proteins
mRNA, since it carries information from the nucleus to the ribosome
Amino acids, since they are bonded together to form a protein
tRNA, since it is responsible for transporting amino acids to the ribosome
- 5. Multiple Choice
During reproduction, a sperm cell fertilizes an egg cell. The newly formed embryo then undergoes mitosis as it develops. The cells of the organism differentiate in order to perform different functions for the organism.
The reason different cells perform different functions is that they ―
contain different types of DNA
have different genes activated
utilize different RNA to make protein
need different kinds of energy to function
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