What is happening at each indicated time on this graph? Log₁ number viable cells A B C D E A B C سنينا D Time [Choose ] [Choose ] [Choose ] + + E Choose ] Cells are competing for limited resources and mutations help some cells outcompete others Cells are dying faster than they can be replaced Cells are devoted to growing as quickly as possible given the conditions Cells are changing their gene regulation patterns to prepare for growth Dying cells are being replaced by newly divided cells

What is happening at each indicated time on this graph? Log₁ number viable cells A B C D E A B C سنينا D Time [Choose ] [Choose ] [Choose ] + + E Choose ] Cells are competing for limited resources and mutations help some cells outcompete others Cells are dying faster than they can be replaced Cells are devoted to growing as quickly as possible given the conditions Cells are changing their gene regulation patterns to prepare for growth Dying cells are being replaced by newly divided cells

Biology: The Unity and Diversity of Life (MindTap Course List)

14th Edition

ISBN:9781305073951

Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Chapter1: Invitation To Biology

Section: Chapter Questions

Problem 5CT: In 2005, researcher Woo-suk Hwang reported that he had made immortal stem cells from human patients....

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Which event occurs in S-phase? prastrca Mitotic spindle is created. O Normal growth and cell function Energy stores are replenished Karyokinesis None of the above
Which of the following is not a characteristic of cancer cells? an increase in density dependent inhibition an increase in telomere length a decrease in DNA repair a decrease in cell adhesion molecules an increase in chromosome abnormalities
Ultraviolet light may cause DNA damage. Any change to DNA is known as a "mutation". How might such damage affect Synthesis? the cell won't be able to copy its DNA the cell will not be able to go through G2 without going through S first the cell will copy the mutated DNA and pass it onto the newly created cells the cell will enter G0
Classify the following characteristics according to whether they describe typical cells or cancer cells. Labels Differentiated and specialized Immortal Nuclei take up most of the cell Attach to substrate and respond to inhibitorv signals Reset All Cancer Cells (1/2) Typical Cell (2/2)
The following image below shows an overview of a entire cellular process. Figure 1 DNA RNA alymesase RWA Which statement explains the result of the process shown in Figure 17 This process generates RNA molecules that can then be translated into proteins that express specific genes. This process creates mutations in a cell's DNA sequence that leads to an increased variation in the gene pool. This process uses RNA as a template to assemble different proteins forgene expression for traits for cellular functions. This process leads to DNA nucleotides being matched with their complementary base pairs to conserve genetic information.
Match each of the changes that can contribute to cancer with its correct description. Loss of function of regulators that send old or damaged cells into apoptosis Hyperactivation of signalling pathways that tell the cell to grow and divide 1. Sustaining proliferative signalling Loss of function of structural proteins that anchor cells to surrounding tissue and/or activation of cell migration 2. Evading growth suppressors 3. Activating invasion and metastasis Loss of function of 4. Enabling replicative immortality regulators that stop inappropriate growth and cell division 5. Inducing angiogenesis 6. Resisting cell death Loss of function of regulators that force aging cells to exit the cell cycle and enter GO or replicative senescence 00
Which of the following statements best describes scaffolding proteins? Microtubule arrays that allow lipid-soluble hormones to get from the cell membrane to the nuclear pores Large molecules to which several relay proteins attach to facilitate cascade effects Relay proteins that orient receptors and their ligands in appropriate directions to facilitate complex formation Proteins that enter the nucleus of a cell to regulate transcription
the light micrograph shows dividing cells near the tip of an onion root. identify and encircle a cell in each of the following stages: phrophase , prometaphase, metaphase ,anaphase and telophase. describe the major events occuring at each stage.
What's the primary difference betweenadult stem cells and embryonic stem cells?O A. Adult stem cells can become a limitednumber of cell types, and embryonic stemcells are more flexible and can generate manydifferent cell types.O B. Embryonic stem cells can become alimited number of cell types, and adult stemcells are more flexible and can generate manydifferent cell types.O C. Adult stem cells can generate manydifferent cell types, and embryonic stem cellscan't differentiate.O D. Embryonic stem cells can generatemany different cell types, and adult stem cellscan't differentiate
In this picture what is happening during step 1 to create the cell in the middle. You can answer with the specific name of the process or by describing what is happening. e99 Step 1 Step 2 Fully grown multicellular organism sperm (level 2) stv 6 MacВook Air 888 F7 FS F3 & 2# 2$ 8 3 4 Y E R G H J K F C V command option .. .- | '
Describe how Ras and p53 can alter the simplified genetic pathway controlling cell division shown below. For each of the two genes, would uncontrolled cell division result from a loss-of-function or a gain-of-function mutation? growth factors - receptors - cyclins - cyclin-dependent kinases - cell division
Consider the estrogen receptor (ER), a cell-cell signaling molecule which can be mutated to caus3 cancer. ER has a very short half life of 30 minutes. Consider a cell that starts out with 20,000 molecules of estrogen receptor at the start of your experiemnt. Ar t=0 you treat the cell. At t=0 you treat the cell with two drugs. 1)alpha-amanitin, a poisonous chemical from mushrooms that inhibits the enzymatic activity of RNA polymerase (this is why you should know your mushrooms) and 2) cycloheximide, a drug that inhibits translation by the ribosome. Under these conditions, how many molecules of ER protein will be present at the following times?