Yew Tree

How can we obtain cells for a cell culture? a) We culture stable cell lines b) All of these options are possible c) We use stem cells d) We take them from the animal or plant, making a primary culture

We are going to need a lot of cells for our experiments! How do we produce new cells? a) Destroy existing cells b) Magnify existing cells c) Duplicate existing cells d) Measure existing cells

Cell division is essential for any living organism. For which of these processes is it NOT essential? a) Growth and development b) Reproduction c) Preservation d) Tissue renewal

What does each duplicated chromosome have two of? a) Different chromatids, one from the father and the other from the mother b) Identical chromatids c) RNA molecules d) Copies of the entire DNA

Most of your cells contain 46 chromosomes. You inherited 23 from your mother and 23 from your father. Before the cells divide, each of them condenses into an x-shaped duplicated chromosome, which can be seen with a light microscope. At this stage, what does of these chromosomes NOT contain? a) Exactly four histones b) Exactly two chromatids c) Exactly two DNA helices d) Chromatin

DNA wound around histones forms a structure that looks like beaded string. What is this structure called? a) Histone b) Chromatin c) Chromosome d) DNA

Which phase of the cell cycle is represented by number 1 in the diagram? a) Mitotic phase b) S phase c) G1 phase d) G2 phase

Which phase of the cell cycle is represented by number 3? a) Mitotic phase b) S phase c) G2 phase d) G1 phase

Which phase of the cell cycle is represented by number 2 in the diagram? a) Mitotic phase b) G2 phase c) S phase d) G1 phase

What is the total magnification if the magnification of the eyepiece is 10x and the magnification of the objective lens is 40x? a) 30x b) 400x c) 4x d) 50x

What is stained in red? a) Membranes b) Proteins c) Cellulose d) Chromatin

In some of the cells you can see clear chromosomes while others only contain a red sphere. How can you explain these red spheres? a) The cells are dead b) The HCI broke down chromatin c) They indicate RNA production of active cells d) Due to uncondensed chromosomes

How many cells can you find in prophase? a) 2 b) 3 c) 5 d) 7

Which types of cells undergo meiosis? a) Nerve cells b) Sperm cells c) Muscle cells d) Blood cells

meiosis and mitosis. How many daughter cells are produced by each of these processes? a) 2 for mitosis; 2 for meiosis b) 46 for mitosis; 4 for meiosis c) 2 for mitosis; 4 for meiosis d) 4 for mitosis; 2 for meiosis

What is the correct description of the daughter cells after meiosis? a) Cannot be determined b) Нaploid c) Triploid d) Diploid

Fluorescent microscopy can be used to visualize cellular structures in very high contrast. What do the fluorescent dyes stain to make this possible? a) Mitotic structures b) Specific molecules c) Replicating DNA d) All cells in G1

The cell contains two sets of chromosomes (2n). What is the correct name for such cells? a) Diploid b) Gamete c) Reproductive d) Haploid

We used different fluorescent dyes to color specific parts of the cell and combined the resulting images. Which part is colored in blue? a) Chromosomes b) Microtubules c) Intermediate filaments d) Nucleus

At this stage, the two identical copies of single of the cell. What is the correct term for these copies of single chromosomes? chromosomes are aligned at the midline a) Microtubule b) Kinetochore c) Centrosome d) Sister chromatids

Which phase are the cells currently in? a) G zero phase b) Interphase c) Mitosis phase d) Cytokinesis

Which proteins does the cell need for cell cycle progression? a) Both cyclins and cyclin-dependent kinases b) Cells don't need any kind of regulatory proteins for cell cycle progression c) Only cyclin-dependent kinase (CDKS) d) Only cyclins

attached to the microtubules (via the Mitosis can proceed from metaphase to anaphase if all sister chromatids are properly kinetochore). Which checkpoint is responsible for checking this? a) G2 checkpoint b) G1 checkpoint c) M checkpoint d) S checkpoint

cycle. How many A checkpoint in the cell cycle is a control point where stop checkpoints are there in the cell cycle? and go signals regulate the a) 2 b) 3 c) 4 d) 1

Which checkpoint checks for DNA damage after replication? a) M checkpoint b) S checkpoint c) G1 checkpoint d) G2 checkpoint

Based on your examination, what is your conclusion? a) The poison has no effect on the cells b) The poison accelerates cell division c) The effect of the poison cannot be determined d) The poison inhibits cell division

we used different fluorescent dyes to color specific parts of the cell and combined the resulting images. which part is colored blue?