SAT MCQ Quiz Hub

1. The pattern of DNA fragments resulting from restriction enzyme digestion of genomic DNA from two species of skunk with EcoRI show extensive similarities. This suggests that
most of the restrictions sites recognized by EcoRI are found at approximately the same distances apart in the DNA from both skunk species
the two skunks must be the same species, not different species
restriction enzyme digestion with EcoRI produces the same pattern of DNA fragments in all organisms
the genetic makeup of the two skunk species is identical

2. Restriction enzyme digestion with HindIII of genomic DNA from three toad species (A, B, and C) revealed that species A and B each produced unique fragment patterns, whereas species C shared fragments with both species A and species B. These results suggest that
species C is a hybrid between species A and species B
the DNA sample from species C must have been contaminated
species C is the most recent living ancestor of both species A and species B
species C served as an outgroup for the study

3. One of the earliest theories pertaining to the origin of life on earth suggested that life began in shallow pools. Recent studies have led to extensive debate regarding the origin of life, with some researchers suggesting that life may have originated
as viral particles
in volcanoes
in mudflats
near deep sea vents

4. The number of base pairs in a typical bacterium is about __________, while the number in human cells is around __________.
3,000, 3 million
1 million, 1 billion
3 million, 3 billion
1 billion, 12 trillion

5. The proteins around which human DNA is wound are
cyclins
heat shock proteins
G-proteins
histones

6. The proteins that come together to form maturation promoting factors, or M phase factors, are
cyclins and cyclin-dependent kinases
cyclin-dependent kinases and G proteins
cyclins
G-proteins

7. Restriction enzymes were originally isolated from
viruses, which use them to cut bacterial DNA
bacteria, which use them to cut viral DNA
viruses, which use them to turn off their host bacterial DNA
protists, which use them to organize themselves into colonial life-forms

8. If a restriction enzyme has as its recognition sequence ATCCTA, how many restriction sites would appear in the lambda genome, which is approximately 54,000 bp?
2,250
9000
13
7

9. Which enzyme(s) should be used to insert the human sequence into the plasmid?
ERA I
CRO I
MEM II
CRO I and ERA I

10. Insulin is an important hormone that serves to decrease ones blood sugar. Glucagon has the opposite effect through
the conversion of glycogen to glucose
the secretion of glucose by cells
causing gluconeogenesis
all of the above

11. In humans, the structure that receives blood from the lungs is the
aorta
pulmonary artery
pulmonary vein
renal vein

12. Which of the following statements about antibodies is false?
Antibodies are produced by different combinations of soluble proteins in the blood called complement
When antibodies bind to a bacterial cell, it may keep that cell from adhering to host cells
The specific receptors on T cells that would interact with a specific antigen are the same shape as antibodies that will interact with that antigen
By binding to antigens, antibodies mark those antigens for destruction by macrophages

13. Which of the following statements about muscle contraction is (are) true?
Calcium ions combine with troponin to cause a conformational change in tropomyosin
Myosin and actin slide together because of the binding and contraction of actin filaments
Tropomyosin wraps around myosin and blocks the binding sites between actin and myosin
Both (A) and (B) are true

14. Viruses are an exception to the cell theory because they
normally reproduce by binary fission
normally reproduce by forming spores
lack either DNA or RNA
normally reproduce only in host cells

15. The hydrogen bonds in water are a result of
the hydrogen of one molecule bonding to the hydrogen of another molecule
the oxygen of one molecule bonding to one of the hydrogens of that molecule
the hydrogen of a water molecule bonding to the nitrogen of another
the hydrogen of one molecule bonding to the oxygen of another molecule

16. Which of the following DNA sequences would code for the polypeptide glutamine, lysine, histidine?
CAG AAA CAU
ACT CCC ACG
GUC UUU GUA
GTC TTT GTA

17. If a DNA strand contained the sequence ATG AGT CGT, what one base substitution could keep the translation from being completed?
A to G
T to A
G to C
C to G

18. Which element acts as a hydrogen acceptor during aerobic respiration?
carbon
oxygen
hydrogen
nitrogen

19. Which of the following statements about the menstrual cycle is false?
Luteinizing hormone is produced by the pituitary in response to GNRH from the hypothalamus
Luteinizing hormone acts on the follicle, causing ovulation
Birth control pills that contain estrogen and progesterone would inhibit the secretion of FSH by the pituitary
The endometrium builds up to its maximum thickness soon after the release of FSH

20. Which of the following substances would NOT be present in a typical procedure for separating proteins by gel electrophoresis?
water
bromophenol blue
Tris buffer
agarose

21. You are trying to measure mRNA synthesis with animal cells growing in a tissue culture. Which radioactive nucleotide should you provide to the cells to measure RNA synthesis?
adenine
cytosine
guanine
uracil

22. Splicing of hnRNA is done in the nucleus by snurps.Of what are these snurps composed?
RNA
DNA
proteins
RNA and proteins

23. Peter Mitchell was able to demonstrate chemiosmosis by getting ______________ to go down their concentration gradient by using two different ___________.
potassium ions, light frequencies
hydrogen ions, light frequencies
potassium ions, pH solutions
hydrogen ions, pH solutions

24. Blood entering the dorsal aorta has most recently been in the
right atria
right ventricle
left ventricle
left atria

25. Carbohydrate digestion begins in the __________ with the action of the enzyme __________.
mouth, amylase
stomach, pepsin
stomach, chymotrypsin
small intestine, amylase

26. The function of ATP in voluntary muscle movement is to supply the energy for
myosin to bind to actin
myosin to become separated from actin
tropomyosin to bind to troponin
tropomyosin to become separated from troponin

27. The undershoot during an action potential is the result of
the sodium gates being closed and the potassium gate open
the sodium gates being closed and the potassium gate closed
the sodium gates being open and the potassium gate closed
the sodium gates being open and the potassium gate open

28. Which of the bonding examples below is NOT possible?
a DNA adenine to a DNA thymine
a DNA adenine to an RNA thymine
a DNA guanine to an RNA cytosine
a DNA adenine to an RNA uracil

29. Which of the following replaces guanine in RNA?
adenine
thymine
cytosine
none of the above

30. Which of the following statements is true about mutations?
Rates tend to be very high in most populations
generally lethal
irreversible
Only certain gene locations are affected

31. Which of the following have a visceral mass and a muscular foot?
Medusoids
Annelida
Aschelminthes
Mollusca

32. Which of the following is radially symmetrical and possesses nematocysts?
Porifera
Coelenterates
Mollusca
Amphibians

33. Which of the following is NOT indicated by Mendels experiments?
incomplete dominance
segregation
recessive
dominant

34. A ratio of 3:1 in the phenotype of an organism occurs when
the alleles are incompletely dominant
only recessive traits are involved
only dominant traits are involved
alleles segregate during meiosis

35. Colorblindness in humans is
caused by a recessive allele
in equal proportion in both sexes
caused in females by a heterozygous genotype
inherited by males from their male parent

36. Trisomy 21 in humans is the result of
pleiotropy
polygenic inheritance
epistasis
nondisjunction

37. Homologous chromosomes line up in pairs in
metaphase of mitosis
metaphase I
metaphase II
interphase

38. Which of the following terms does NOT refer to an example of a weak force of interaction between two molecules?
covalent bond
Van der Waals bond
hydrophobic bond
electrostatic bond

39. The element found in all amino acids that is NOT found in carbohydrates is
sulfur
carbon
oxygen
nitrogen

40. Which of the following would NOT have hydrophilic properties?
OH
molecules in aqueous solution
long hydrocarbon chains
ionized molecules

41. Which of the following is NOT found in DNA?
uracil
thymine
phosphate
adenine

42. Elements used for making molecules found in living systems must
contain nitrogen and sulfur
be hydrophilic
be covalent
be suitable and available

43. Which of the following is NOT a property of water?
hydrophilic properties
hydrophobic properties
very good solvent
density as a solid is less than that as a liquid

44. Which of the following are weak forces usually associated with biological molecules?
hydrogen bonds
electrostatic interactions
covalent bonds
both (A) and (B)

45. Which of the following procedures would NOT be likely to lead to the production of recombinant DNA?
transformation of bacterial cells with plasmid DNA from another strain of bacteria
transformation of bacterial cells with naked DNA from human cells
transduction of bacteria using phage particles (bacterial viruses)
the removal of a single somatic cell from a carrot and regenerating an entire plant from the cell through tissue culture

46. The human skin contains all of the following receptors EXCEPT
pain receptors
pressure receptors
thermoreceptors
chemoreceptors

47. Darwins Natural Selection includes all of the following EXCEPT
Variation can be due to mutations
The difference in survivability between organisms may be due to variation
Not all organisms may survive, due to competition
Organisms produce more offspring than can survive

48. While UK has earned record revenue this year, __________ well behind in exports.
it still lag
it still lags
it lag still
it lags still

49. Anna and Tania went shopping, but __________ couldnt find anything __________ liked.
they, those
they, them
those, they
they, they

50. Nuclear energy is __________ dangerous to be used widely.
so
such
too
that