Sat Past Questions And Answers
With respect to DNA, the terms 3' and 5' (pronounced 3-prime and 5-prime, respectively) are used in order to refer to one strand or the other. What do these two terms signify?
- A. 3' refers to the unbound hydroxyl group and 5' refers to the unbound carboxyl group at the end of each DNA strand. .
- B. 3' refers to the unbound hydroxyl group and 5' refers to the unbound phosphate group at the end of each DNA strand.
- C. 3' refers to the unbound methyl group and 5' refers to the unbound hydroxyl group at the end of each DNA strand.
- D. 3' refers to the unbound sulfhydral group and 5' refers to the unbound phosphate group at the end of each DNA strand
There is a certain type of chemical bonding between the paired nucleotides on each strand of DNA which helps maintain the double-helix structure of DNA by attracting each strand to the other. What type of bonding is responsible for this?
- A. Ionic
- B. Covalent
- C. Phosphodiester
- D. Hydrogen
Your neighbor has a flower garden in which there are red flowers and white flowers. These flowers are diploid organisms, and flower color is an autosomal trait. The gene for red flowers (R) is dominant, while the gene for white flowers (r) is recessive. Which of the following is the genotype of a white flower?
- A. RR
- B. Rr
- C. rr
- D. R
Which of the following macromolecules are composed of long chains of amino acids?
- A. Nucleic acids
- B. Proteins
- C. Fats
- D. Carbohydrates
According to a US tax policy expert, state taxes are ______ other factors when considering an interstate move. Even significant differences in state taxation have almost no effect on most people’s decisions, while differences in employment opportunities, housing availability, and climate are strong influences. Which choice completes the text with the most logical and precise word or phrase?
- A) consistent with
- B) representative of
- C) overshadowed by
- D) irrelevant to
Consider the following test scores from a typical high school class with 15 students: 81,83,91,99,100,89,92,96,89,94,83,90,98,89,97 The mean of this data set is_________, and the mode of this data set is _______.
- A. 81, 100
- B. 91.4, 100
- C. 91, 91.4
- D. 91.4, 89
A petri dish contains a population of cells. One of these cells acquires a DNA mutation which enables it to grow and divide much more rapidly than the other cells around it. Which of the following statements best characterizes the mutation?
- A. The mutation will allow the cells that have the mutation to produce more daughter cells, so the mutation will become more prevalent in the population over time
- B. There will be no change in prevalence of the mutated cells over time.
- C. The cells with the mutation will produce just as many daughter cells as those without the mutation, so the mutation will become less prevalent in the population over time.
- D. The mutation will allow the cells that have the mutation to produce more daughter cells, so the mutation will become less prevalent in the population over time.
While researching a topic, a student has taken the following notes: • Abdulrazak Gurnah was awarded the 2021 Nobel Prize in Literature. • Gurnah was born in Zanzibar in East Africa and currently lives in the United Kingdom. • Many readers have singled out Gurnah’s 1994 book Paradise for praise. • Paradise is a historical novel about events that occurred in colonial East Africa. The student wants to introduce Paradise to an audience unfamiliar with the novel and its author. Which choice most effectively uses relevant information from the notes to accomplish this goal?
- A) Abdulrazak Gurnah, who wrote Paradise and later was awarded the Nobel Prize in Literature, was born in Zanzibar in East Africa and currently lives in the United Kingdom.
- B) Many readers have singled out Abdulrazak Gurnah
- C) A much-praised historical novel about colonial East Africa, Paradise (1994) was written by Abdulrazak Gurnah, winner of the 2021 Nobel Prize in Literature.
- D) Paradise is a historical novel about events that occurred in colonial East Africa, Abdulrazak Gurnah
If a structural gene in an organism's genome is comprised of 29% guanine nucleotides, what percentage of the gene is comprised of cytosine nucleotides?
- A. 42%
- B. 29%
- C. It cannot be determined from the given information.
- D. 19%