Question 11.

 

Consider a cell that underwent mitosis but not cytokinesis. What would the results be?

 

A. One cell with one nucleus containing twice the normal number of chromosomes

B. One cell with two nuclei, each containing a normal number of chromosomes

C. Two daughter cells that are unusually small

D. Two daughter cells with no nucleus

E. Two daughter cells with twice the number of chromosomes

 

Question 12.

 

In humans , the allele for brown eyes (B) is dominant. The allele for blue eyes (b) is recessive. if a woman with genotype BB and a man with a genotype Bb have four children will have blue eyes?

 

A. 0

B. 1

C. 2

D. 3

E. 4.

 

Question 13 a man carries a sex linked gen for Goltz Syndrome on his X chromosome. Who will he pass this on to?

 

A. All of his daughters

B. Half of his daughters

C. All of his sons

D. Half of his sons

 

Question 14

 

The information stored in genes is transferred to proteins by which two processes

 

A. Respiration and translation

B. Translation and mutation

C. Transcription and translation

D. Translation and protein synthesis

E. Respiration and protein synthesis

 

Question 15

 

If human cells were genetically modified (GM), which of the following GM cells would directly affect future generations?

 

A. Intestinal

B. Immune

C. Gamete

D. Somatic

 

Question 16

 

What is the smallest biological unit that can evolve

 

A. Population

B. Species

C. Cells

D. Individual

 

Question 17

 

What is a recessive trait

 

A. A trait that not everyone in your family share

B. A trait only visible when organisms are heterozygous for the responsible gene

C. A trait that a person carries but that does not affect the phenotype

D. A trait that appears when a person has two recessive alleles for that gene

E. The lest common variation of that trait in a population

 

Question 18

 

Biomedical scientist study species as different as worms, fruit flies, mice, zebrafish, or rhesus monkeys to understand human genes and how they lead to diseases. Why?

 

A. Because they make up an interconnected food web when bacteria are added

B. Because these species are all prokaryotes, and therefore their gens are 99.9% indentical to one another

C. Because rhesus monkeys gave us the RH+ factor when they bit our ancestors

D. Because these species have many inherited features that are very similar to our own.

 

Question 19

 

Why are most food chains limited to 3 to 5 trophic levels

 

A. The higher the trophic level, the larger the organisms; the larger the organism, the less likely it will be prey

B. The nutritional quality of existing biomass decreases with increasing trophic level

C. Most ecosystems have insufficient space to suppot the increased number of organism that more trophic levels would require

D. There is insufficient energy to support more trophic levels

 

Question 20

 

Which of the following factors is considered the greatest threat to biodiversity today?

 

A. Habitat destruction and Fragmentation

B. Invasive species

C. Over-exploitation

D. Pollution

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