Cell Division Day 2: Asexual Reproduction

Multiple Choice

A 2n cell of a bat has 44 chromosomes, how many chromosomes will you find in one of his gametes

• 23

• 22

• 44

• 88

Multiple Select

A haploid cell from a male camel has 35 chromosomes. What type of cell is this? Choose all that apply

• Sperm

• Egg

• Heart Cell

• Muscle Cell

Categorize

Options (12)

Somatic Cells

2n

Body Cells

Zygotes

Sex Cells

Gametes

Egg Cells

Sperm Cells

n

Pollen

Ova

Organ Cells

Sort the Terms

Diploid

Haploid

Labelling

Label the Diagram

Drag labels to their correct position on the image

Chromatin

Centromere

Chromosome

Sister Chromatids

DNA

Multiple Choice

What is the role of checkpoints in the cell cycle?

• To ensure that cells divide uncontrollably

• To prevent the division of damaged cells

• To speed up the cell cycle

• To initiate cell division

Reorder

Reorder the following

• Prophase

• Metaphase

• Anaphase

• Telephase

• cytokenises

1

2

3

4

5

• 1
• 2
• 3
• 4
• 5

Drag and Drop

Identify the cell phase to the left and the cycle which comes after it and before.

Phase Shown: ​ ​

Placeholder

Phase Before: ​ ​

Placeholder

Phase After: ​

Placeholder

Drag these tiles and drop them in the correct blank above

Anaphase

Metaphase

Telophase

Cytokinesis

Prophase

Interphase

Labelling

Correctly label each stage of the cell cycle.

Drag labels to their correct position on the image

Telophase

Metaphase

Anaphase

Prophase

Interphase

Cytokinesis

Multiple Select

What is the purpose of mitosis? Select all that apply.

• growth of multi-cellular organisms

• repair of damaged tissues

• replacement of cells

• produce energy for life

• production of reproductive cells

Does Mitosis Contribute to Homeostasis?

Of Course It Does! It provides new, identical cells to replace old, damaged, or dead cells, which is essential for tissue repair and growth.

Mitosis is ASEXUAL reproduction.

Are there types of asexual reproduction?

Of Course! Each of the following processes use mitosis.

Copy this list down and leave plenty of room for details

Binary Fission


Budding


Sporulation


Regeneration


Vegetative Propagation

What is Binary Fission?

Binary (Two) Fission (Split)

AKA: Split in Two

Binary Fission is a form of asexual reproduction in ONLY single- celled organisms (bacteria and protists).

During Binary Fission, the Cytoplasm divides equally to form two daughter cells of equal size and shape.

AGAIN: This occurs in ONLY Unicellular organisms, like Bacteria, Amoeba, and Paramecium

Multiple Choice

Based on the prior slide, what do you think budding is?

• A new individual, smaller but identical to the original, growing out of the side of the parent

• The process where an organism splits evenly into two new individuals of the same size.

• The growth of a new organism from a broken-off piece of the parent.

• When a parent produces offspring inside a protective structure, which then hatches or emerges later.

What is Budding?

Budding occurs in simple organisms as well as single celled organisms. It is when a new, smaller, individual grows out of the side of the parent. During Budding, the Cytoplasm divides unequally to form daughter cells of unequal size.

The smaller cells are called the buds and larger cells are called the parents.
Sometimes, the bud will break free to live on its own, or they will remain attached

Some organisms that do this are single celled yeasts, sponges, and hydra

What is Sporulation?

Asexually produced spores are single, specialized cells that are formed by mitosis and released by certain organisms. When spores land in favorable conditions, they germinate (sprout) and grow into offspring that are identical to the parent. Many spores are surrounded by a thick, hard shell; other lack such a wall and may be flagellated. Some organisms that do this are Fungi, Algae, and Protozoa.

Germination under a microscope

Multiple Choice

^{This diagram BEST demonstrates which of the following?}

• Mitosis

• Sporulation

• Binary Fission
• Budding

What is Regeneration?

Regeneration is the ability of animals to re-grow lost body parts (by mitosis). In simple animals, pieces can grow into complete new animals that are identical to the parent.

The power of regeneration decreases as the animals become more complex

Process of limb regeneration in Ambystoma mexicanum

What is Vegetative Propagation?

Vegetative propagation is asexual reproduction involving the plant organs of roots, stems, and leaves (vegetative structures).

There's two big umbrella terms we need to understand here: Differentiated and Undifferentiated cells.

Differentiated Cells are cells that already have a pre-determined role in an organism.

Undifferentiated Cells are cells that don't have a role yet.

Undifferentiated Cells in a plant can be cambium, meristem, and epidermal cells. They can all divide by mitosis. They can then differentiate to give rise to an independent plant that is identical to the parent. Vegetative propagation occurs naturally and can also be brought about artificially by humans.

Multiple Choice

The vertebrate forelimb initially develops in the embryo as a solid mass of tissue. As development progresses, the solid mass near the end of the forelimb is remodeled into individual digits. Which of the following best explains the role of apoptosis in remodeling of the forelimb?

• Apoptosis replaces old cells with new ones that are less likely to contain mutations.

• Apoptosis involves the regulated activation of proteins in specific cells of the developing forelimb that leads to the death of those cells.

• Apoptosis involves the destruction of extra cells in the developing forelimb, which provides nutrients for phagocytic cells.

• Apoptosis in the developing forelimb triggers the differentiation of cells whose fate was not already determined.