Categories
Biology

biology quiz

 

 

Question 1 (5 points)

 

 

 

A karyotype ______.

 

Question 1 options:

  

compares one set of chromosomes to another.  

of a normal human cell shows 48 chromosomes.  

is a photograph of cells undergoing mitosis during anaphase.  

cannot be used to identify individual chromosomes beyond the fact that two chromosomes are homologues.  

is a visual display of chromosomes arranged according to size.

 

 

Question 2 (5 points)

 

 

 

At which stage of mitosis are distinct chromatids visible and moving towards the opposite poles of the cell?

 

Question 2 options:

  

Metaphase  

Telophase  

Interphase  

Anaphase  

Prophase

 

Question 3 (5 points)

 

 

 

Mitosis in humans usually results in the formation of _____.

 

         

 

Question 3 options:

  2 diploid cells

        4 diploid cells

           2 haploid cells

           4 haploid cells

             

Sperm or egg cells

 

Page 1 of 7

 

All of the following are characteristics of cancer cells EXCEPT _____.

 

Question 4 options:

  

angiogenesis  

unregulated mitosis  

unmutated DNA  

ability to metastasize  

no apoptosis

 

Question 5 (5 points)

 

 

 

What stage does cytokinesis generally overlap with in the typical cell cycle?

 

Question 5 options:

  

S phase  

prophase  

telophase  

anaphase  

metaphase

 

 

Question 6 (5 points)

 

 

 

An important result of meiosis is that _____.

 

Question 6 options:

  

each gamete receives one member of each pair of homologous chromosomes and gametes are formed that are haploid.  

each gamete receives one member of each pair of homologous chromosomes.  

gametes are formed that are diploid.  

gametes receive one copy of each member of each pair of homologous chromosomes.  

gametes are formed that are haploid.

 

Question 5 (5 points)

 

 

 

What stage does cytokinesis generally overlap with in the typical cell cycle?

 

Question 5 options:

  

S phase  

prophase  

telophase  

anaphase  

metaphase

 

 

Question 6 (5 points)

 

 

 

An important result of meiosis is that _____.

 

Question 6 options:

  

each gamete receives one member of each pair of homologous chromosomes and gametes are formed that are haploid.  

each gamete receives one member of each pair of homologous chromosomes.  

gametes are formed that are diploid.  

gametes receive one copy of each member of each pair of homologous chromosomes.  

gametes are formed that are haploid.

 

Question 10 (5 points)

 

 

 

For anaphase to begin, which of the following must occur?

 

Question 10 options:

  

Chromatids must lose their kinetochores.  

Cohesin must attach the sister chromatids to each other.  

Cohesin must be cleaved enzymatically.  

Kinetochores must attach to the metaphase plate.  

Spindle microtubules must begin to depolymerize.

 

Question 11 (5 points)

 

 

 

Spindle microtubules attach to kinetochores during this phase of mitosis.

 

Question 11 options:

  

metaphase  

prometaphase  

anaphase  

prohase  

telophase

 

Question 12 (5 points)

 

 

 

Four of the five answers listed below are related by a common phase of mitosis. Select the exception.

 

Question 12 options:

  

chromosomes separate  

chromosomes decondense  

spindle microtubules disappear  

nuclear envelope re-forms  

nucleolus reappears

 

Question 13 (5 points)

 

 

 

A woman is found to have 47 chromosomes, including three X chromosomes. Which of the following describes her expected phenotype?

 

Question 13 options:

  

A) masculine characteristics such as facial hair  

B) enlarged genital structures  

C) excessive emotional instability  

D) normal female  

E) sterile female

 

Question 14 (5 points)

 

 

 

Which of the following is an example of polygenic inheritance?

 

Question 14 options:

  

A) pink flowers in snapdragons  

B) the ABO blood group in humans  

C) Huntington’s disease in humans  

D) white and purple flower color in peas  

E) skin pigmentation in humans

 

Question 15 (5 points)

 

 

 

Why did the F1 offspring of Mendel’s classic pea cross always look like one of the two parental varieties?

 

Question 15 options:

  

A) No genes interacted to produce the parental phenotype.  

B) Each allele affected phenotypic expression.  

C) The traits blended together during fertilization.  

D) One phenotype was completely dominant over another.  

E) Different genes interacted to produce the parental phenotype.

 

Page 5 of 7

 

Page 6 of 7

 

Note: It is recommended that you save your response as you complete each question.

 

 

Question 16 (5 points)

 

 

 

Use the following information to answer the questions below.

 

Tallness (T) in snapdragons is dominant to dwarfness (t), while red (R) flower color is dominant to white (r). The heterozygous condition results in pink (Rr) flower color.

 

A dwarf, red snapdragon is crossed with a plant homozygous for tallness and white flowers. What are the genotype and phenotype of the F1 individuals?

 

Question 16 options:

  

A) ttRr—dwarf and pink  

B) ttrr—dwarf and white  

C) TtRr—tall and red  

D) TtRr—tall and pink  

E) TTRR—tall and red

 

Question 17 (5 points)

 

 

 

National Basketball Association (NBA) scientists have identified the gene for superior athletic ability.  The allele “A” represents the dominant form of the gene, while the allele “a” represents the recessive form of the gene.  The scientists find that the superior athletic ability gene is optimally expressed in individuals who possess the homozygous dominant form. 

 

If Michael Jordan, who has the Aa genotype, has a child with a woman who has the aa genotype, what are the chances that his child will inherit the optimal superior athletic ability genotype?

 

Question 17 options:

  

0%  

25%  

50%  

75%  

100%

 

Question 18 (5 points)

 

 

 

There is evidence that a certain color in cats is sex-linked. Yellow is recessive to black.
  A heterozygous condition results in tortoise shell or calico color. A calico cat has a litter
of 8 kittens: 1 yellow male, 2 black males, 2 yellow females, and 3 calico females. What
was the male parents probable color?

 

Question 18 options:

  

yellow  

black  

calico  

yellow and black  

albino

 

Page 6 of 7

 

Page 7 of 7

 

Note: It is recommended that you save your response as you complete each question.

 

 

Question 19 (5 points)

 

 

 

Imagine you are performing a cross involving seed color in garden plants.  What F1 offspring would you expect if you cross true-breeding parents with green seeds with true-breeding parents with yellow seeds?

 

Question 19 options:

  

25% white seeds, 25% yellow seeds, and 50% green seeds  

25% green seeds, and 75% yellow seeds  

50% yellow seeds, and 50% green seeds  

100% yellow seeds  

100% yellow-green seeds

 

Question 20 (5 points)

 

 

 

All of the genes located on a given chromosome constitute a

 

Question 20 options:

  

linkage group.  

karyotype.  

none of these  

wild-type allele.  

bridging cross.

 

Page 7 of 7

 

 

 

Categories
Biology

kinesiology and nutrition

i need you make table for 5 days chart 

 

nutrition what you eat in all this 5 days 

 

 

 

other table shows sleeping for 5 days 

 

and exercise for 5 days 

 

conclution 

 

Ask me for details , see the files attached 

Categories
Biology

Botany and Zoology questions!

Write a three-paragraph (one page) report on spider silk, including such items as its strength, its composition, and its origins. 

 

What do the circular muscles do for the movement of the earthworm?

 

What do the longitudinal muscles do for the movement of the earthworm?

 

 What structure of the earthworm anchors it to the ground?

 

What is segmentation?

 

How does segmentation aid in the earthworm’s movement? 

 

 Why do you think earthworms is important to farmers and gardeners? 

 

 Describe your earth worm. Include its length and width. Use centimeters. 

Categories
Biology

two reflection responses

two reflection responses 

each responses , i need 100 words and site address.

Categories
Biology

Choosing a Topic (BIOLOGY OF HEALTH AND DISEASE)

  

To complete this portion of the project, choose a topic and create a Word document with a minimum of 500 words stating:

1. the disease, disorder, or condition you chose

2.why it is significant to you;

3.why it is significant to the general population- including information such as how many people are affected by the disease annually, does the disease pose a threat to the health of others, are the treatment costs high, does the condition greatly affect quality of life or  life expectancy, etc.; and

4. the search terms you used to find research that was readily available

see attachment:

Categories
Biology

Medical terminology

About course

Categories
Biology

paper 1

Topic1: Why Branding is important in marketing?-APA Format, minimum of 4 sources-Minimum of 4 pages of double spaced content (not including, title, abstract, and reference sections)-Must have title, abstract, and reference sections. 

Categories
Biology

Week 5-103

 you may want to check out these videos about Punnett Squares:

Learn Biology: How to Draw a Punnett Square: https://www.youtube.com/watch?v=prkHKjfUmMs&feature=related
Gregor Mendel’s Punnett Square: https://www.youtube.com/watch?v=d4izVAkhMPQ 

Complete this Mendelian Activity  (click on “Go to Animation” and then the Play button for each step of the activity, you can skip the pea example with two traits) before preparing your response to this conference topic.  What are recessive traits? What are the dominant traits?  Describe one recessive OR one dominant human trait.   Do you, your (biological) parents, grandparents and/or kids have this recessive/dominant trait?  What is your phenotype for this trait? What is your likely genotype for this trait?   Show how you came to your conclusions using a Punnett Square (you can copy this table, or use the Insert table button in the text editor). Include the trait in the title of your post. Use the textbook and/or your favorite search engine/library to find information, include references. 

 Your main response should be at least 150 words and include references to all information sources used.  

Categories
Biology

food and science

u need read the article and learn the topic post 5 question and comments 

the research topic is ag trade and food aid 

Agriculture trade and Food Aid are both very complicated and interwoven topics.  

On the surface you may think that open trade and then helping those in need are the obvious best choices in all situations.  I hope that the videos that you watch and the other research that you do on these help you to understand some of the complexity.  

First, the video that you all should watch “What are we doing here?”  (Links to an external site.)Links to an external site. examines food aid in Africa.  At the end the four men are more torn in opinion than when they first started – I hope the same for you.  (I told you at the beginning you should end with more questions than answers from this class!)

Food aid doesn’t just mean dropping bags of grain in the Saharan desert, it can also be domestic “Food Stamps”  – SNAP or WIC or even food banks.  In the books you have an option to read, both endorse gardening as one means to assist in food security.  Will Allen’s book addresses the other side of that – the cultural push-back against working the land.   

We see the other side – Agriculture Trade portrayed in “Life and Debt”.  Some places – like land rich United States, can grow a lot, and thus makes our commodities inexpensive, (Of course, you also have the subsidies debate to convolute the discussion as well) while smaller countries could grow enough to sustain themselves, but economically cannot compete with the world market because they do not have the efficiency of size.  

As I started this statement, there are a lot of folds to this fabric, and “right” answers may be elusive. 

Categories
Biology

SCI 207 Week 1 DQ

Need Week 1 DQ