bio #3 test

Question 1

Cells divide for all of the following reasons EXECCPT_____
[ Growth, Repair, Adaptation or Reproduction ]

Answer 1

`Adaptation

Question 2

Timeline representing the lifespans for different types of cell of the human body

Answer 2

White blood cells -> hours
Gut epithelial -> 3 days
Skin Cells -> 2 weeks
Red blood cells -> 4 months
Liver cells -> 1 year
Fat cells -> 8 years
Bone cells -> 10 years
Muscles cells and neurons -> Lifetime

Question 3

Which of the following is NOT true of eukaryotic genomes?
[ Made of double-stranded DNA, Located in the nucleus, Circular, ALL ]

Answer 3

Circular

Question 4

Human somatic cells have how many chromosomes?

Answer 4

46

Question 5

A diploid cell has ______ the number of chromosomes as a haploid cell
[ 1/4, 1/2, twice, fourtimes ]

Answer 5

Twice

Question 6

An organism’s traits are determined by the specific combination of inherited ______

Answer 6

Genes

Question 7

Which of the following is NOT a phase of mitosis?
[ Interphase, Prophase, Anaphase, Telophase ]

Answer 7

Interphase

Question 7

Which of the following is NOT a phase of mitosis?
[ Interphase, Prophase, Anaphase, Telophase ]

Answer 7

Interphase

Question 8

Chromosomes are duplicated during what portion of the cells cycle?

Answer 8

S phase

Question 9

Separation of the sister chromatids is a characteristic of which stage of mitosis?

Answer 9

Anaphase

Question 10

Describe the number of chromosomes in the parent cell compared to the daughters cell after mitosis?
[ More, Less, Same ]

Answer 10

Same

Question 11

Mitosis produces daughter cells which are_____

Answer 11

Diploid (2n)

Question 12

_____ are changes to the nucleotides in a segment of DNA that codes for a protein.

Answer 12

Gene mutations

Question 13

A gene that codes for a positive cell cycle regulator is called _____

Answer 13

a proto-oncogene

Question 14

Homologous chromosomes are similar but not identical? [ T or F ]

Answer 14

True

Question 15

Sister chromosomes are identical ? [ T or F ]

Answer 15

True

Question 16

Describe the number of chromosomes in a cell before mitosis compared to after mitosis. [ More, Less, Same ]

Answer 16

Same

Question 17

Describe the number of chromosomes in a haploid cell compared to a diploid cell. [ More, Less, Same ]

Answer 17

Less

Question 18

Select all of the following which are diploid cells. Note: more than one answer may be correct:

Gamete
Somatic cell
Neuron
Sperm
Hepatocyte (liver cell)
Pancreatic cells

Answer 18

Somatic cell
Neuron
Hepatocyte (liver cell)

Question 19

Meiosis produce ____ daughter cells.

Answer 19

4 haploid

Question 20

Which of the following are identical to each other
[ Sister chromatids, Non-Sister chromatid’s, Homologous chromosomes, non-homologous chromosomes ]

Answer 20

Sister Chromatids

Question 21

At which stage of meiosis are sister chromatids separated from each other?

Answer 21

Anaphase II

Question 22

Which part of meiosis is most similar to mitosis?

Answer 22

Meiosis II

Question 23

If a muscle cell of a typical organism has 32 chromosomes, how many chromosomes will be in a gamete of that same organism ?

Answer 23

16

Question 24

Nondisjunction during meiosis I would lead to the failure of separation of ____________

Answer 24

Homologous chromosomes

Question 25

How many autosomes does a human somatic cell have?

Answer 25

44

Question 26

The genotype XXY corresponds to _____

Answer 26

Klinefelter syndrome

Question 27

Mitosis of a cell with the genotype Cc will produce daughter cells with the genotype ___

Answer 27

Cc and Cc

Question 28

Which of the following genotypes is homozygous recessive ?

Answer 28

bb

Question 29

Which genotype will produce the domaint phenotype?

Answer 29

BB and Bb

Question 30

Which of the following genotypes will not produced by a cross between Ff and ff ?
[ FF, Ff, ff ]

Answer 30

FF

Question 31

What will be the genotypic ratio among offspring for a cross between Nn and NN ?

Answer 31

1 : 1

Question 32

What is the phenotypical ratio for a dihybrid cross ?

Answer 32

9 : 3 : 3 : 1