WHAT IS LIFE ACHIEVE ACCESS ONLY >I<
5th Edition
ISBN: 9781319487317
Author: PHELAN
Publisher: INTER MAC
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Chapter 8, Problem 1MC
Summary Introduction
Introduction:
Telomeres are the ending portion of linear DNA that form protective caps on either end.
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Which of the following statements correctly identifies the difference between plant and animal cell division?
Select one:
a. The cell walls of plants prevent the process of cytokinesis.
b. Plants cells lack centrioles, and they form a cell plate during cytokinesis.
c. Both plant and animal cells undergo mitosis and cytokinesis, but they lack the interphase.
d. Plant cells lack centromeres, and they form a cell wall to produce two daughter cells.
Which of the following is true of normal adult cells but NOT cancer cells?
A. Cell death after a finite number of cell divisions
B. Contact with other cells increases likelihood of division
C. Large amount of telomerase present D. Do not care about cell density while culture
Below are three statements - two of which are truths and one is a lie. Which of the following statements is a lie?
Select one:
a.The role of centrosomes in the plant cell is not clear since it can proceed cell division with or without it.
b.The central vacuole's function includes serving as a lysosome in the plant cell.
c.Metabolic processes in the prokaryotic cell are all done in its cytoplasm.
Chapter 8 Solutions
WHAT IS LIFE ACHIEVE ACCESS ONLY >I<
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- In multicellular organisms, nondividing cells stay in G0 phase. For the cell, why is it better to be held in G₁ rather than S, G₂ or M phase? A. G₁ cells are larger and more likely to perform the normal functions of the cell. B. G₁ cells have not replicated their DNA in preparation for division. C. G₁ cells are the only ones that do not have their chromatin in a highly condensed state. D. MPF is required to enter S phase, so the cell is committed to entering M phase if the cycle moves beyond G₁. How many does the chromosome number of the species A. Is equal to the diploid chromosome number. B. Refers to the chromosome number of the somatic cell. C. Is a constant number for the organisms of the species generation after generations. D. All of the above. Which statement about the daughter cells following mitosis and cytokinesis is correct? A. They are genetically different from each other and from the parent cell. B. They are genetically identical with each other and with the parent…arrow_forwardWhich of the following statements is TRUE regarding the nucleo-cytoplasmic interaction? a. Nuclear genes control metabolic processes occurring in the cytoplasmb. Molecules in the cytoplasm cannot influence expression of genes in the nucleusc. Cytoplasmic transplantation experiments have provided evidence for the validity of this concept.d. Molecules can move from the nucleus to the cytoplasm, but not from the cytoplasm into the nucleusarrow_forwardOne important biological effect of a large dose of ionizing radiation (like X-rays) is to halt cell division. How does this occur? To answer this question, state the name and role of 2 specific and important proteins involved in the process. What happens if a cell has a mutation that prevents it from halting cell division after be irradiated? Be specific and detailed. An adult human who has reached maturity will die within a few days of receiving a radiation dose large enough to stop cell division. What does that tell you about cell division? In addition, name 2 different/unique cell types that would be primarily affected.arrow_forward
- In normal cells, the telomeric DNA sequences are which of the following (select one)? A. Get shorter with successive cell generations B. Get longer with successive cell generations C. Remain unchanged throughout successive cell generations D. Disappear after the first generation of daughter cells E. Sequence changed to all T in daughter cellsarrow_forwardWhich of the following statements are true? a. after contromeres divide, chromatids are known as chromosomes b. centromeres are seperated during anaphase c. during anaphase, some microtubles become shorter and pull sister chromatids in opposite direction d. all these are truearrow_forwardWhich of the following statements is FALSE? A. Centrosomes are anchor points for microtubules and are essential to form the mitotic spindle. B. In the eukaryotic cell cycle the cell spends much more time in the interphase than in the mitotic phase. C. In telophase two nuclear envelopes are fully formed and the cell splits in two via cytokinesis. D. The contraction of the kinetochore microtubules leads to the separation of the sister chromatids during anaphase. E. In the prophase chromatin condenses into X-shaped chromosomes.arrow_forward
- Which of the following is MOST likely true of aggressively dividing cancer cells (select one)? A. They do not express telomerase B. They do not express hTERT C. They are in a state of cell crisis D. Their telomeres are stabilized (not shortening with each cellular division) E. None of Abovearrow_forwardStone cells in coconut shells are part of the division of labor in plants. What modifications do they have that make it impossible for them to be dividing and growing cells ?arrow_forwardWhich of the following is the main reason why DNA must exist in chromosome form? a.)To favor the formation of sister chromatids b.)To allow the protein histones to carry out its task c.)To avoid the genetic material to be tangled away during cell division d.)To promote the formation of spindle fibersarrow_forward
- An enzyme such as ligase is a protein molecule. When high temperature is applied to ligase, the protein molecule changes its shape and is no longer able to perform its function. The enzyme is said to be denatured. If ligase was denatured in a cell, how would it affect its cell cycle? Select one: a. The cell would not be able to obtain amino acids. b. The cell would not be able to transcribe DNA. c. The cell would not be able to produce protein molecules. d. The cell would not be able to replicate.arrow_forwardPassage of cells from G1 through R to S depends on the interaction of various signal molecules, proteins and enzymes which regulate the cell cycle. Imagine I have just induced a mutation in a cell line which prevents the breakdown of the cyclin molecule we discussed. Which of the following events do you predict will happen? circle all that apply Select one or more: a. Uncontrolled cell replication may result b. Retinoblastoma protein will be continuously active c. The cells will be stuck in G1 phase d. The cells will begin to replicate their DNA e. Cyclin dependent kinase (Cdk) will be continuously activearrow_forwardWhich of the following statements about mitosis is incorrect? a. Microtubules from the spindle poles attach to the kinetochores on the chromosomes. b. In anaphase, the spindle separates sister chromatids and pulls them apart. c. In metaphase, spindle microtubules align the chromosomes at the spindle midpoint. d. Cytokinesis describes the movement of chromosomes. e. Both the animal cell furrow and the plant cell plate form at their former spindle midpoint.arrow_forward
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