Biology 1 - Mitosis And Meiosis | Attempts: 716

2.

A nucleic base with its attached phosphate and sugar is referred to as a ___________________.

Explanation
A nucleic base with its attached phosphate and sugar is referred to as a nucleotide or nucleotides. Nucleotides are the building blocks of nucleic acids, such as DNA and RNA. They consist of a nitrogenous base (adenine, guanine, cytosine, thymine/uracil), a phosphate group, and a sugar molecule (deoxyribose in DNA and ribose in RNA). Nucleotides are essential for the storage and transmission of genetic information and play a crucial role in various cellular processes.

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3.

DNA, RNA, and ATP are all examples of _______________________.

Explanation
DNA, RNA, and ATP are all examples of nucleic acids. Nucleic acids are macromolecules that are essential for storing and transmitting genetic information in living organisms. DNA and RNA are nucleic acids that play a crucial role in the synthesis of proteins and the transmission of genetic traits. ATP, on the other hand, is a nucleotide that serves as the main energy carrier in cells. Therefore, all three molecules are classified as nucleic acids due to their similar chemical structure and biological functions.

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4.

The thin objects that attach to the center of each chromosome and help pull them apart are _____________.

Explanation
The thin objects that attach to the center of each chromosome and help pull them apart are called spindle fibers. These fibers play a crucial role in cell division by ensuring that each daughter cell receives the correct number of chromosomes. They attach to the centromere region of the chromosomes and exert forces to separate them during mitosis or meiosis. The term "spindle fibers" is used to refer to these structures, and it can also be shortened to "fibers" or "spindle fiber" without changing the meaning.

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0

5.

Check all that apply to haploid cells.

Have 23 chromosomes
Have 46 chromosomes
Are primarily somatic cells
Are primarily gametes
Always have an X and a Y chromosome
Identical to parent cells
Not identical to parent cells

Correct Answer(s)

A. Have 23 chromosomes
A. Are primarily gametes
A. Not identical to parent cells

Explanation

Haploid cells have 23 chromosomes because they only contain one set of chromosomes, whereas diploid cells have 46 chromosomes because they contain two sets of chromosomes. Haploid cells are primarily gametes because they are the reproductive cells involved in sexual reproduction. They are not identical to parent cells because they undergo meiosis, a process that results in genetic variation through the shuffling and recombination of genetic material.

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1

6.

The special organelle that helps with mitosis is the _______________________.

Correct Answer(s)
centrosome
centrosomes

Explanation
The correct answer is "centrosome" or "centrosomes". The centrosome is a specialized organelle found in animal cells that plays a crucial role in cell division, specifically in mitosis. It helps to organize and separate the chromosomes during the process of cell division. The centrosome contains a pair of centrioles, which are involved in the formation of the spindle fibers that pull the chromosomes apart. Therefore, the centrosome is essential for the proper progression of mitosis.

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7.

Check which of the following are part of the cell cycle

Meiosis 1
Interphase
Cytokinesis
Meiosis 2

Correct Answer(s)

A. Meiosis 1
A. Interphase
A. Cytokinesis
A. Meiosis 2

Explanation

These are ALL parts of the cell cycle for a gamete!

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8.

Check which of the following are part of mitosis:

Anaphase
Interphase
Metaphase
Prophase
G1 Phase
S Phase
Telophase
Cytokinesis

Correct Answer(s)

A. Anaphase
A. Metaphase
A. Prophase
A. Telophase

Explanation

Interphase, G1, S, and G2 phases are not actively dividing so they are not part of mitosis. Cytokinesis does not involve diving DNA so it is also not part of mitosis!

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9.

Check all that apply to DNA

Contains Adenine
Contains Uracil
Contains Thymine
Has a deoxyribose sugar
Has a ribose sugar
Contains phospholipids
Contains phosphates
Single Stranded
Double Stranded
Contains Hydrogen Bonds
Consists of nucleotides
Is an original set of instructions
Is a copy of the original instructions
Resides in the nucleus

Correct Answer(s)

A. Contains Adenine
A. Contains Thymine
A. Has a deoxyribose sugar
A. Contains phosphates
A. Double Stranded
A. Contains Hydrogen Bonds
A. Consists of nucleotides
A. Is an original set of instructions
A. Resides in the nucleus

Explanation

DNA contains Adenine and Thymine as its nitrogenous bases. It has a deoxyribose sugar and contains phosphates. DNA is double-stranded and the two strands are held together by hydrogen bonds. It consists of nucleotides, which are the building blocks of DNA. DNA carries the original set of instructions for the functioning and development of an organism. It resides in the nucleus of the cell.

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10.

Adenine, Cytosine, Guanine, Thymine and Uracil are all examples of _______________________.

Correct Answer(s)
Nucleic Bases
Nucleic Base

Explanation
Adenine, Cytosine, Guanine, Thymine, and Uracil are all examples of nucleic bases. Nucleic bases are the building blocks of nucleic acids, which include DNA and RNA. These bases pair up with each other in specific combinations (Adenine with Thymine in DNA, Adenine with Uracil in RNA, and Guanine with Cytosine in both DNA and RNA) to form the genetic code. Therefore, all the given options are correct as they refer to the same concept of nucleic bases.

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11.

Select all that apply to mitosis:

Produce cells with 23 chromosomes
Produce cells with 46 chromosomes
Produce cells with sex chromosomes
Undergo 1 round of division
Undergo 2 rounds of division
Require replicated (duplicated) DNA
Does not require replicated (duplicated) DNA
Produces Germ Cells
Produces Somatic Cells
Crossing Over Occurs
Sister Chromatids Form

Correct Answer(s)

A. Produce cells with 46 chromosomes
A. Produce cells with sex chromosomes
A. Undergo 1 round of division
A. Require replicated (duplicated) DNA
A. Produces Somatic Cells
A. Sister Chromatids Form

Explanation

Mitosis is a type of cell division that results in the production of cells with the same number of chromosomes as the parent cell. Therefore, it produces cells with 46 chromosomes. Additionally, mitosis can also produce cells with sex chromosomes, as these are also replicated and distributed during the process. Mitosis undergoes 1 round of division, where the parent cell divides into two identical daughter cells. Replicated DNA is required for mitosis to occur, as the chromosomes need to be duplicated and separated during division. Mitosis primarily produces somatic cells, which are non-reproductive cells of the body. Finally, sister chromatids form during mitosis, as the replicated chromosomes consist of two identical chromatids held together by a centromere.

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12.

Describe why meiosis in necessary in the first place. In other words, why can't we just use mitosis to create gametes?

13.

Describe why telophase and cytokinesis are different.

14.

Name and explain the three major forms of RNA.

15.

Biology 1 - Mitosis And Meiosis

After Prophase 1, the sister chromatids are no longer identical because they have undergone ____________________.

Quiz Preview

A nucleic base with its attached phosphate and sugar is referred to as a ___________________.

DNA, RNA, and ATP are all examples of _______________________.

The thin objects that attach to the center of each chromosome and help pull them apart are _____________.

Check all that apply to haploid cells.

The special organelle that helps with mitosis is the _______________________.

Check which of the following are part of the cell cycle

Check which of the following are part of mitosis:

Check all that apply to DNA

Adenine, Cytosine, Guanine, Thymine and Uracil are all examples of _______________________.

Select all that apply to mitosis:

Describe why meiosis in necessary in the first place. In other words, why can't we just use mitosis to create gametes?

Describe why telophase and cytokinesis are different.

Name and explain the three major forms of RNA.

What is a checkpoint? Where is the most important checkpoint found in the cell cycle?