Question

Yellow seeds on a pea plant are an example of a/an ______.

Question 40 options:

1)

element.

2)	phenotype.

3)	environmental factor.

4)

genotype.

5)

allele.

A plant that produces white flowers is crossed to a plant that produces orange flowers. All of the offspring produced white flowers. What can you conclude?

Question 41 options:

1)	Orange flower color is the dominant phenotype.

2)	White flower color is the dominant phenotype.

3)	The genes for flower color do not assort independently.

4)	The genes for flower color are on separate chromosomes.

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Question 42 (1 point)

What units are bonded together to make a strand of DNA?

Question 42 options:

1)

Proteins

2)

Enzymes

3)

Cells

4)	Nucleotides

5)	Chromatids

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Question 43 (1 point)

Many modern-day trees are tall because ______.

Question 43 options:

1)	it is easier for tall tress to obtain water.

2)	tall tress obtain more sunlight, so they produce more offspring than short trees.

3)	tall trees offer less wind resistance.

4)	tall trees are less affected by disease.

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Question 44 (1 point)

An organism’s phenotype includes ______.

Question 44 options:

1)	its physical characteristics.

2)	its behavior.

3)	none of the above.

4)	both A and B.

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Question 45 (1 point)

Which of these is a correct order of taxonomic categories from less specific to more specific?

Question 45 options:

1)	Kingdom domain phylum order class family genus

2)	Domain phylum kingdom order class family genus

3)	Domain kingdom phylum class order family genus

4)	Domain kingdom class phylum order family genus

5)	Kingdom domain phylum class family order genus

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Question 46 (1 point)

In the scientific name of humans, Homo sapiens, the name “sapiens” is the ______.

Question 46 options:

1)

class.

2)

species.

3)

genus.

4)

order.

5)

family.

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Question 47 (1 point)

Cells occur singly and have a nucleus and other organelles, including chloroplasts. These cells move with flagella. They are ______.

Question 47 options:

1)

bacteria.

2)

protists.

3)

archaea.

4)

fungi.

5)	two of these are possible.

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Question 48 (1 point)

Cilia are ______.

Question 48 options:

1)	the cytoplasmic extensions or false feet used by some cell types for locomotion.

2)	different kinds of cells each designed to perform a different function.

3)	the circular chromosomes of bacteria.

4)	many short hair-like cellular extensions found on the surface of some protists.

5)	a few long whip-like extensions, used by protists for locomotion.

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Question 49 (1 point)

The state of having more than two full sets of chromosomes is called ______.

Question 49 options:

1)	autosomal.

2)

dominant.

3)	polyploidy.

4)	aneuploidy.

5)	nondisjunction.

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Question 50 (1 point)

Which of the following occurs in mitosis but NOT in meiosis?

Question 50 options:

1)	Cells genetically identical to parents are made.

2)	Crossing over.

3)	Independent assortment of chromosomes.

4)	Pairing up of similar chromosomes during prophase.

Yellow seeds on a pea plant are an example of a/an ______.

Question 40 options:

1)

element.

2)	phenotype.

3)	environmental factor.

4)

genotype.

5)

allele.