🧪 SAT MCQ Quiz Hub

1. Which of the following is true about the blood?
Arteries carry oxygen-rich blood
Arteries carry oxygen-poor blood
Veins carry oxygen-rich blood
None of the above is true

2. Chemical digestion begins in the
mouth
esophagus
stomach
gall bladder

3. In a heterozygous monohybrid cross, the dominant trait can be expressed in the phenotype of the F1 ________ of the time.
0 percent
25 percent
33 percent
75 percent

4. Which of the following would be the result of a true dihybrid cross?
AABB
AABb
AaBb
AaBB

5. Tissue that lines the outer and inner surfaces of the body in protective sheets of tightly packed cells is known as
nervous tissue
adipose tissue
connective tissue
epithelial tissue

6. The organ system that functions in exchanging gases with the environment is known as the
digestive system
respiratory system
circulatory system
endocrine system

7. Which of the following statements is NOT part of Darwins theory of natural selection?
Individuals that are best adapted to their environment tend to pass on heritable advantageous characteristics to their offspring
Genetic variation exists among individuals in a population
The size of most populations remains relatively constant, despite the fact that more offspring are produced than are needed to maintain it
Early settlers saved seed only from the most productive crop plants to plant the following year

8. A tetraploid individual would have
four copies of each chromosome
two copies of each chromosome
one copy of each chromosome
four copies of a single chromosome

9. Which of the following best describes the relationship between a population and a species?
A species is one type of population
A species is a local subset of a population
A population is a group of organisms occupying a specific area
The terms population and species are interchangeable

10. The number of individuals in a population that the environment can just maintain with no net increase or decrease from generation to generation is known as
the dispersion pattern
the habitat cap
the exponential growth curve
the carrying capacity

11. Which of the following pairs of figures would you need to know to determine the population density of elk living in Rocky Mountain National Park?
the number of elk living in the park and the area of land encompassed by the park
the birth rate of the elk population and whether population growth is logistic or exponential
the birth rate of the elk population and the area of land encompassed by the park
the number of elk living in the park and the dispersion pattern of the elk population

12. A small isolated population found on a remote island is more likely to undergo speciation than a large widespread population because a small isolated population
inherently contains much greater genetic diversity
is more susceptible to genetic drift
is more readily adaptable to extreme environmental changes
is more likely to migrate to other islands or the nearest mainland

13. Two snails in the same class must also be in the same
genus
order
area
phylum

14. Which of the following represents the correct order of eras, from most ancient to most recent, along the geological time scale?
paleozoic-precambrian-mesozoic-cenozoic
precambrian-paleozoic-mesozoic-cenozoic
precambrian-mesozoic-paleozoic-cenozoic
cenozoic-mesozoic-paleozoic-precambrian

15. Monocotyledons and dicotyledons are the two subdivisions of flowering plants. Monocotyledons are distinguished from dicotyledons because monocots possess
floral structures in multiples of fours and fives
long taproots and parallel venation in their leaves
netted leaf venation and floral structures in multiples of three
parallel leaf venation and fibrous roots

16. Which of the following statements is true concerning plants that utilize C4 photosynthesis?
They only open their stomates at night
They use bundle sheath cells to separate the Calvin cycle from the atmosphere
They use rubisco (ribulose bisphosphate carboxylase oxygenase) to capture carbon dioxide from the atmosphere
They use lenticels exclusively for gaseous exchange in order to conserve water

17. Neurotransmitters have as their effectors cells such as
nerves
muscles
glands
all of the above

18. Neurotransmitters cross the synapse after being released from the
dendrites
axons
cell bodies
all of the above

19. Which of the following biomes is correctly paired with its description?
tundra coniferous trees in a cold, dry climate
taiga cold areas with low, mat-like vegetation
tropical deciduous forests-the biome with the most precipitation
savanna-grassland with three distinct climates, based mainly on rain

20. Mimicry always involves a model and a mimic as well as a dupe or signal receiver (the organism the mimic is trying to fool). Which of the following depicts Batesian mimicry?
a walking stick (a herbivore) sitting on a branch of a tree
a rat snake (nonpoisonous) that looks like a poisonous species
an oppossum playing possum
a spider that looks like an ant

21. Two organisms that occupy many of the same niches are most likely
competitors
predator-prey
host-parasite
mutualistic partners

22. Lynn Marguliss endosymbiotant theory is supported by the fact(s) that
mitochondrial DNA is more like that of bacteria than the nuclear DNA in human cells
chloroplasts replicate on their own time schedule, not under nuclear control
mitochondria and chloroplasts are about the same size as prokaryotes
all of the above

23. People who suffer from meningitis are having an inflammation around their
coronary arteries
pleural cavities
membranes of the spinal cord
kidneys

24. Which is the correct sequence of events during embryonic development?
cleavage-differentiation-fertilization-gastrulation
fertilization-differentiation-cleavage-gastrulation
differentiation-fertilization-gastrulation-cleavage
fertilization-cleavage-gastrulation-differentiation

25. In the development of a frog embryo, Spemans primary organizer was found to be the
dorsal ectoderm
dorsal lip of the blastopore
archenteron
neural tube

26. Choose the one statement that is true from among the following.
FSH is produced in the ovaries and causes maturation of the follicle
LH is produced in the pituitary gland and causes ovulation
Estrogen is produced in the anterior pituitary gland and causes the endometrium to thicken
Progesterone is produced in the posterior pituitary gland and causes the endometrium to thicken

27. If 9 percent of all cicadas exhibit the homozygous recessive condition known as flippant wings, what is the gene frequency for that gene in the general population?
cannot be determined
91 percent
0.9
0.3

28. The wings of a bird and those of an insect are a good example of
adaptive radiation
coevolution
convergent evolution
all of the above

29. Which one of the following lists contains an organism that does NOT belong in that phylum?
jellyfish, coral, anemone, starfish
tunicates, birds, sharks, man
bats, dogs, cats, sloths
liver fluke, planaria, tapeworm, flatworms

30. Choose the most Darwinian reason to describe how camels came to have flat, broad hooves.
The camels that ventured further into the desert acquired broader feet, which were passed along to their offspring
Those animals that had the broadest hooves were the most attractive to the opposite sex
The animals that had the broadest hooves were able to travel farther and find water more easily than those that could not and subsequently perished
In the game of life, random events will move evolution toward the most successful adaptations possible

31. The age of the Earth is about __________ years, and life has existed on the Earth for __________ years.
3.5 billion, 2.5 billion
3.5 billion, 1.5 billion
15 billion, 3.5 billion
4.5 billion, 3.5 billion

32. Which of the following could be used to study evolution?
DNA hybridization
RFLPs
structural homologies
all of the above

33. Which of the following organisms lacks a coelom?
roundworms
segmented worms
clams
grasshoppers

34. Which of the following biomes is characterized by the driest conditions?
tundra
taiga
temperate deciduous forest
grasslands

35. All of the following are associated with mating behavior EXCEPT
aggressive behavior
releaser pheromones
search image
territoriality

36. Which of the following organisms in the food chain has the largest biomass?
plants
grasshopper
mouse
owl

37. Which of the following is an instinct?
habituation
caring for offspring
operant conditioning
associative behavior

38. Which of the following is the specialized absorptive structure in the intestine?
alveoli
villi
Bowmans capsule
salivary glands

39. Which of the following tissues contains the highest number of mitochondria?
nervous
skin
connective
muscle

40. Endocrine glands
secrete vitamins
cease functioning after adolescence
begin functioning in adolescence
have no ducts

41. In flowering plants, sperm are produced by the
ovary
anther
microsporangium
sporophyte

42. Which of the following is not a type of plant stem?
node
corn
rhizome
tendril

43. Which of the following is a product of cyclic photophosphorylation?
carbon dioxide
oxygen
ATP
NAD+

44. The role of oxygen in aerobic respiration is
to couple with C to form CO2 in chemiosmosis
to form ATP
to contribute H+ to the Krebs cycle
to accept electrons from the Electron Support Chain

45. Photosynthesis is
Light driven
photo driven
anabolic
all of the above

46. Identify the correct eukaryotic cell cycle.
G1 to S to G2 to M to cytokinesis
G1 to G2 to M to S to mitosis
G1 to G2 to S to M to karyokinesis
S to G1 to G2 to M to cytokinesis

47. Which of the following is NOT involved in the synthesis of proteins?
rough ER
smooth ER
Golgi body
ribosomes

48. Which of the following stages of the cell cycle occurs immediately prior to mitosis?
G1
G2
S
M

49. Which of the following produces ATP during aerobic respiration?
chloroplast
nucleus
ER
mitochondrion