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SAT Subject Biology

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Instructions: Select the one choice that is the best answer and fill in the corresponding space on the answer sheet. In order to reflect the actual level of SAT biology knowledge, if you are not sure about the answer, please try not to guess but answer (F) instead.
 
**SAT Subject Biology Placement Test (25 minutes)**
 
Press "Next" to start.
Instructions: Select the one choice that is the best answer and fill in the corresponding space on the answer sheet. In order to reflect the actual level of SAT biology knowledge, if you are not sure about the answer, please try not to guess but answer (F) instead.
 
**SAT Subject Biology Placement Test (25 minutes)**
 
Press "Next" to start.
1. All of the following are TRUE of meiosis in plants, except
(A) Crossing-over occurs during prophase
(B) There is no replication of chromosomes between meiosis I and meiosis II
(C) Spindle fibres are attached to the centriole
(D) Synapsis occurs during prophase
(E) Homologous pairs of chromosomes line up on the metaphase plate in meiosis I
(F) I really don't know
2. Which statement is NOT correct about enzymes?
(A) The model that best describes how enzymes work is the lock-and-key model
(B) Enzymes are proteins
(C) Enzymes can be denatured at high temperature
(D) Vitamins and coenzymes assist enzyme functions
(E) Enzymes are not degraded during a reaction
(F) I really don't know
3. Which of the following is produced by both cellular respiration and the light-dependent reactions of photosynthesis?
(A) Glucose
(B) ATP
(C) CO2
(D) Pyruvic acid
(E) Oxygen
(F) I really don't know
4. Which of the following is correctly matched?
(A) Proteins – Nucleotides
(B) Lipid – Glycogen
(C) Carbohydrate – Amino acids
(D) DNA – Glucose
(E) None of the above
(F) I really don't know
5. Which of the following is/are TRUE regarding DNA replication?
I.    DNA replication is semi-conservative.
II.   DNA replication occurs during Prophase.
III.  DNA synthesis occurs in a 3’-to-5’ direction.
IV.  Purines hydrogen-bond to pyrimidines
(A) I and II only
(B) I, II, and III only
(C) I, III, and IV only
(D) I, II, III, and IV
(E) I and IV only
(F) I really don't know
6. All of the following statements related to gel electrophoresis are correct EXCEPT
(A) restriction enzymes cut DNA at particular recognition sequences
(B) restriction enzyme are extracted from bacteria
(C) the farther a piece of DNA runs, the larger it is
(D) EcoRI is an example of a restriction enzyme
(E) restriction enzyme are necessary in order to insert a gene into a plasmid
(F) I really don't know
7. Which statement regarding protein synthesis is FALSE?
(A) The rRNA molecules help incorporate the correct amino acid into proteins.
(B) Proteins are formed on the ribosomes.
(C) The mRNA is not necessary for proper protein synthesis.
(D) Ribosomal RNA is needed for proper binding of the mRNA message.
(E) Ribosomes are found either in the cytoplasm or attached to the endoplasmic reticulum.
(F) I really don't know
8. Which of the following is an acceptable nitrogen base composition for double stranded DNA?
(A) 31% A; 19% T; 31% C; 19% G
(B) 36% A; 36% T; 24% C; 24% G
(C) 48% A; 48% T; 52% C; 52% G
(D) 31% A; 31% T; 19% C; 19% G
(E) 24% A; 24% T; 36% C; 36% G
(F) I really don't know
9. The gene of color blindness in X-linked. If normal parent have a color-blind son, what is the probability that he inherited the gene of color blindness from his mother?
(A) 0%
(B) 25%
(C) 50%
(D) 75%
(E) 100%
(F) I really don't know
10. A man with haemophilia marries a woman who has normal haemoglobin and is not a carrier. Which of the following is true?
(A) None of their children will have the disease nor will be carriers
(B) All the boys will have the disease
(C) All the boys will be carriers
(D) All the girls will have the disease
(E) All the girls will be carriers
(F) I really don't know
11. A pure bred red-flowering plant and a pure bred white-flowering plant cross. The offspring produce pink flowers. What pattern of inheritance is this?
(A) complete dominance
(B) polygenic inheritance
(C) incomplete dominance
(D) multiple alleles
(E) codominance
(F) I really don't know
12. A farmer planted 1000 seeds of corn. The offspring were 544 tall with yellow seeds, 188 tall with green seeds, 183 short with yellow seeds and 64 short with green seeds. What were the genotypes of the parents?
(A) TTYY x ttyy
(B) TtYy x ttyy
(C) ttyy x ttyy
(D) ttyy x TtYy
(E) TtYy x TtYy
(F) I really don't know
13. Which one of the following statement is CORRECT about the heart?
(A) The right ventricle pumps blood to the aorta.
(B) The left ventricle pumps blood to entire body.
(C) The right atrium receives oxygenated blood from the lungs.
(D) The right ventricle pumps blood to the right atrium.
(E) The right ventricle has the thickest wall of all the chambers.
(F) I really don't know
14. All of the following are correct about gas exchange in humans EXCEPT
(A) hemoglobin carries oxygen and carbon dioxide in fairly equal amounts
(B) breathing rate is regulated by the medulla of the brain
(C) the purpose of the nose is to filter, warm, and moisten air
(D) gas exchange occurs in alveoli
(E) when carbon dioxide builds up in the blood, the pH lowers
(F) I really don't know
15. Which is an example of passive immunity?
(A) Lifelong immunity.
(B) Babies who are nursing receive antibodies from their mothers.
(C) You become resistance to a viral infection once you have recovered from it.
(D) You become resistance to mumps after receiving the mumps vaccine.
(E) People who have AIDS have antibodies against the virus but are still gravely ill.
(F) I really don't know
16. Which is the correct order of the stages of the menstrual cycle?
(A) Follicular phase‒ovulation‒menstruation‒luteal phase
(B) Ovulation‒luteal phase‒menstruation‒follicular phase
(C) Follicular phase‒ovulation‒luteal phase‒menstruation
(D) Luteal phase‒ovulation‒menstruation‒follicle phase
(E) Luteal phase‒follicular phase‒ovulation‒menstruation
(F) I really don't know
17. A gene pool in a population of jackrabbits in a field remained constant for many generations. The most probable reason for this stable gene pool is that
(A) no migration occurred in a large population with random mating and no mutations
(B) no migration occurred in a small population with random mating and no mutations
(C) no migration occurred in a large population with nonrandom mating and no mutations
(D) there was much migration into and out of large population, but mating was random and there were few mutations
(E) the population was small with no mutations, no migrations, and nonrandom mating
(F) I really don't know
18. All of the following are correct about plants, except
(A) gymnosperms have cones
(B) tracheophytes have xylem and phloem
(C) moss is a bryophyte
(D) bryophytes must live in a moist environment
(E) some plants have cell walls made of chitin instead of cellulose
(F) I really don't know
19. If two animals mate and produce viable, fertile offspring under natural conditions, we can conclude that
(A) they both have diploid somatic cells.
(B) they are both from the same species.
(C) for any given genes, they both have the same allele.
(D) Their blood types are compatible.
(E) None of the above
(F) I really don't know
20. After taking a one-week course of an antibiotic for an ear infection, a woman was told by the doctor that she still had the infection and that she would have to take a course of a different antibiotic. What is the best explanation for the fact that the first antibiotic did not work?
(A) The woman became immune to the antibiotic.
(B) The bacteria that caused the infection became immune to the antibiotic.
(C) Taking the first antibiotic killed off all the bacteria that were susceptible to it, leaving only those that were resistant.
(D) The woman contracted another infection because there are no bacteria that are resistant to antibiotics.
(E) The woman’s hormones probably interfered with the functioning of the antibiotic.
(F) I really don't know
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