Question 1 1. How many SEX chromosomes are the human cell? Answer 2 1 23 22 4 points Question 2 1. Crossing over Answer involves recombination between non-homologous chromosomes occurs between...

Question 1
1.

How many SEX chromosomes are the human cell?
Answer
2
1
23
22
4 points

Question 2
1.

Crossing over
Answer
involves recombination between non-homologous chromosomes
occurs between adjacent tetrads
occurs only between members of a tetrad
involves recombination between sster chromatids
4 points

Question 3
1.

Mitosis results in ________ daughter cells and meiosis results in ______ daughter cells.
Answer
2, 4
4, 4
2, 2
4, 2
4 points

Question 4
1.

During what phase of meisosis does croosing over occur?
Answer
Prophase II
Metaphase I
Telophase II
Interphase I
4 points

Question 5
1.

In Mendel's particulate theory of inheritance, we now call the "particles" _____.
Answer
genes
chromosomes
mitotic figures
plants
4 points

Question 6
1.

The offspring (phenotype) of an F1 crossed with a homozygous recessive woul be
Answer
all dominant (G)
all recessive (g)
75% dominant (G), 25% recessive (g)
50% dominant (G), 50% recessive (g)
4 points

Question 7
1.

Chargraff's rule states that the amount of A, T, G, and C in DNA
Answer
is the same from species to species, but the amount of A=T and G=C
varies from species to species, but the amount of A=G and T=C
varies from species to species, but the amount of A=T and G=C
is the same from species to species, but the amount of A=G and T=C
4 points

Question 8
1.

How many nucleotide bases make up a code for a single amino acid?
Answer
2
it varies with the amino acid
3
4
4 points

Question 9
1.

What is the term given for the three nucleotide bases on a transfer RNA molecule?
Answer
mRNA
ribosome
anticodon
codon
4 points

Question 10
1.

Which of the following most increasees the changes of a spontaneous abortion?
Answer
amniocentesis
chorionic villous sampling
separating fetal cells from a maternal blood sample
karyotyping
4 points

Question 11
1.

The inactive X chromosome in females becomes a(n)
Answer
Y chromosome
Barr body
Andrus body
Polar body
4 points

Question 12
1.

If a woman who suffers from the sex-linked recessive disorder hemophilia marries a man who does not, what are the chances that her children wil suffer from the disease?
Answer
None of her sons and all of her daughters will suffer from the disorder
All of her sons and none of her daughters will suffer from the disorder
75% of her sons and 25% of her daughters will suffer from the disorder
Half of her sons and half of her daughters will suffer from the disorder
4 points

Question 13
1.

A bacteriophage is a
Answer
a virus that only infects bacteria
a virus that phagocytizes bacteria
a bacteria that causes a deadly disease in humans
a bacteria that phagocytizes other bacteria
4 points

Question 14
1.

The enzyme unique to retroviruses is
Answer
DNA polymerase
RNA polymerase
reverse transcriptase
DNA gyrase
4 points

Question 15
1.

Most prions cause disease when they effect the
Answer
nervous system
heart muscle
the liver
the intestinal tract
4 points

Question 16
1.

The primary producers at deep sea vents are
Answer
heterotrophs
symbionts
chemoautotrophs
photoautotrophs
4 points

Question 17
1.

Methanogens belong to the domain
Answer
Plantae
Bacteria
Eukarya
Archaea
4 points

Question 18
1.

A fruit is derived from
Answer
the ovule
an ovary
the corolla
the calyx
4 points

Question 19
1.

Most fungi
Answer
move by the action of cilia
are multicellular
have cell walls composed of cellulose
are in the domain Archaea
4 points

Question 20
1.

Fungi obtain nutrition by
Answer
photosynthesis
pinocytosis
absorbing food that has been digested outside of the "body" of the fungus
phagocytosis
4 points

Question 21
1.

Mycorrhizal fungi
Answer
are a type of lichen
help plants gather solar energy
all of these are correct
help plants gather inorganic nutrients
4 points

Question 22
1.

Xylem is
Answer
a polysaccharide found in the cells wall of fungi
a plant vascular tissue that transports water and minerals
a plant vascular tissue that transports organic compounds
a polysaccharide found in the cell wall of plants
4 points

Question 23
1.

The largest group of plants are
Answer
angiosperms
bryophytes
lycophytes
ferns
4 points

Question 24
1.

A mushroom is
Answer
the reproductive organ of ferns
the reproductive organ of certain fungi
the photosynthetic organ of some fungi
the body of a fungus
4 points

Question 25
1.

Bacterial endospores are
Answer
survival structures of some bacteria
the photosynthetic structure of some bacteria
the structure that houses bacterial DNA
the reproductive structures of some bacteria