CRUCIAL Bio.E/M Questions, please answer

Swiftness
Tue, 20 Dec 2011 11:26:58 +0000

*An important process that occurs during sperm formation in diploid organisms is



meiosis



*Cutting off the tails of bulldogs for show purposes doesn’t result in taillessness in the next generation. Which of the following is the best explanation for this observation?



No inheritable change is produced by cutting off tails.
OR
Inheritance of acquired characteristics is possible only for animals less complex than mammals



*The determining factor in natural selection is the no. of individuals that



Survive OR are produced OR migrate OR reproduce OR mutate



*Which of the following is most closely related to a mushroom?



Alga OR bacterium OR yeast OR oak tree OR moss



*Several human cancers are caused by mutations induced by chemical or environmental agents. Generally these mutations aren’t inherited by offspring because



Mutations aren’t induced in DNA
OR
Mutations can’t occur in gametes or gamete-producing cells
OR
Only mutations in gametes or gamete-producing cells can be inherited



*Which of the following could explain the fact that a woman whose ovulation is normal maybe infertile?
1-Her fallopian tubes are blocked
2-Large quantities of luteinizing hormone LH, are released just prior to ovulation
3-Sperm movement is inhibited by an incompatible pH in the fluids of the vagina or the uterus

*Which of the following best represents a food chain?
Seeds>mouse>snake>coyote>fleas OR seeds>fleas>mouse>coyote>snake

*Cyanobacteria (blue-green algae) lack which of the following?



mitochondria



*Which of the following is LEAST closely related to the others?



Snake OR lizard OR frog OR alligator OR turtle



*Of the following, the best indicator of the rate of photosynthesis in green plants is the rate at which?



Carbon dioxide is consumed



*If two parents are carriers of the same recessive allele and their first five children exhibit the dominant phenotype, the probability that their next child will exhibit the recessive phenotype?



1/4



*True statements about linked genes include which of the following?
1-The alleles for linked genes may be separated due to crossing-over.
2-Linked genes are on the same chromosome
3-Linked genes occur only on the sex chromosome

*The function of mitosis is to



Replicate chromosomes OR distribute one copy of each chromosome to each new cell