Grade 10 Elite EOT 2 Exam

which of the following statements about the human genome is false?

• the human genome contains long stretches of DNA with no known function

• the human genome contains approximately 3 billion base pairs

• the human genome was sequenced by scientists from around the world

• the human genome contains nucleotide sequences that all code for proteins

Answer explanation

remember some regions of the genome are uncoded

The graph below shows biochemical differences in different organisms. Which statement is true based on the graph?

• the cytochrome C in ducks is unrelated to the cytochrome C in humans

• moths are more closely related to yeast than turtles are to fish

• fish do not share any amino acid sequences with humans

• monkeys share more amino acid sequences with humans than fish share with humans

The image below represents an experiment where a gene from an ocean jellyfish that creates a bioluminescent light has been inserted into a mosquito. The mosquito with the jellyfish gene gives off a green light. which of the following explains what scientists have accomplished?

• DNA fingerprinting was employed to identify a key jellyfish gene

• a new form of life was created through the process of gene cloning

• natural selection processes were altered to change the mosquito's DNA

• the genes of the mosquito were manipulated using genetics

which process is applied to identify mutations or errors in the DNA molecules?

• genetic engineering

• recombinant DNA technology

• polymerase chain reaction

• DNA sequencing

some snakes have structures called pelvic spurs as shown in the image below. Pelvic spurs are reduced forms of the leg bones of these snakes' ancient ancestors. which term best describes pelvic spurs?

• analogous structure

• derived trait

• homologous structures

• vestigial structure

In most Gene Therapy studies, target cells in the patient are infected with a viral vector. What is the benefit of Gene Therapy?

• determining more accurate and safer dosing of drugs

• identifying suspects and determining parents

• helping researchers find genes that cause disease

• correcting mutated genes that cause human diseases

what is the process that scientists use to produce large numbers of recombinant DNA molecules as shown below?

• transformation

• polymerase chain reaction

• gel electrophoresis

• DNA cloning

which of the following enzymes cuts the DNA and creates fragments as shown below?

• RNA polymerase

• DNA ligase

• reverse transcriptase

• EcoRI Enzyme

when a species evolves into a new species without a physical barrier (the ancestral species and new species live side by side during the speciation process), this is called ______

• allopatric speciation

• adaptive radiation

• disruptive selection

• sympatric speciation

Transgenic bacteria can be used to do all the following except ....

• produce insulin

• clean up oil spills

• decompose garbage

• study diseases