Bio 101: Unit 4 Essential Biology
Questions & Answers| Grade A| 100%
Correct (Verified Solutions)
Using the information about a giraffe, make an argument that evolution does not
lead to the perfect animal form. - ANSWER>>the laryngeal nerve wraps around
the aorta which was no problem for ancestors but doesn't make sense in very
long necked giraffes
Draw a chart or graphic that illustrates your understanding of the hierarchy of the
animal body: - ANSWER>>cel l--> tissue --> organ --> organ system --> organism
What are the four major tissue types of the animal body? - ANSWER>>epithelial,
connective, muscle, nervous
Let's use epithelial tissues as an example of the theme of structure/function at
the tissue level. How does the structure of simple squamous epithelium differ
from stratified squamous epithelium? Who do both suit their functions? Where
might you find these types of tissues? - ANSWER>>simple: thin and leaky and thus
suitable for exchanging materials by diffusion; it lines capillaries and air sacs of
lungs
stratified: many layers make it well suited for lining surfaces subject to abrasion,
such as the outer skin and the linings of mouth and esophagus
Module 20.9. What are two different approaches to how scientists are "building
organs"? What kinds of organs have they built? - ANSWER>>1a. growing cells on a
framework that replicates bladder
b. decellurazing organs (washing away) and seed with adult stem cells for heart
2. "printing" cell layers for kidney
, Skin needs to be resistant to the rubbing from your clothes and other other
forces. It also has to be a waterproof barrier to prevent dehydration and
microbes. It also has to responding to stimuli. It must respond and regulate
temperature. What are some of the specific structures in skin that carry out these
functions? List each with each function: - ANSWER>>epidermis
waterproofing: glycolipid
dermis
regulate temperature: small blood vessels and sweat glands
respond to stimuli: sensory receptors
protect from UV radiation: melanin
Where are you more likely to find people who are vitamin D deficient, those in
Canada or Florida? Why? - ANSWER>>Canada- adequate sunlight is needed for
synthesis of vitamin D
Scientific Thinking. At this point in the semester, you should be feeling more
confident about experimental design and reading/interpreting graphs. Explain
why the experiment shown in Figure 20.12C is better designed than that shown in
Figure 20.12B: - ANSWER>>Figure 20.12C shows the effects of when treatment is
over and show how long it actually lasts for after treatments are over
What happened to the surface area relative to volume as an animal body plan
gets larger? - ANSWER>>
What if the volume of a rectangular prism is 1000. What is the surface area? What
is surface divided by volume? - ANSWER>>
Now increase the width, depth, and height of the rectangular prism to their
highest values on the slider. What is the surface area to volume ration if you
increase volume to its highest value of 2744? - ANSWER>>
Questions & Answers| Grade A| 100%
Correct (Verified Solutions)
Using the information about a giraffe, make an argument that evolution does not
lead to the perfect animal form. - ANSWER>>the laryngeal nerve wraps around
the aorta which was no problem for ancestors but doesn't make sense in very
long necked giraffes
Draw a chart or graphic that illustrates your understanding of the hierarchy of the
animal body: - ANSWER>>cel l--> tissue --> organ --> organ system --> organism
What are the four major tissue types of the animal body? - ANSWER>>epithelial,
connective, muscle, nervous
Let's use epithelial tissues as an example of the theme of structure/function at
the tissue level. How does the structure of simple squamous epithelium differ
from stratified squamous epithelium? Who do both suit their functions? Where
might you find these types of tissues? - ANSWER>>simple: thin and leaky and thus
suitable for exchanging materials by diffusion; it lines capillaries and air sacs of
lungs
stratified: many layers make it well suited for lining surfaces subject to abrasion,
such as the outer skin and the linings of mouth and esophagus
Module 20.9. What are two different approaches to how scientists are "building
organs"? What kinds of organs have they built? - ANSWER>>1a. growing cells on a
framework that replicates bladder
b. decellurazing organs (washing away) and seed with adult stem cells for heart
2. "printing" cell layers for kidney
, Skin needs to be resistant to the rubbing from your clothes and other other
forces. It also has to be a waterproof barrier to prevent dehydration and
microbes. It also has to responding to stimuli. It must respond and regulate
temperature. What are some of the specific structures in skin that carry out these
functions? List each with each function: - ANSWER>>epidermis
waterproofing: glycolipid
dermis
regulate temperature: small blood vessels and sweat glands
respond to stimuli: sensory receptors
protect from UV radiation: melanin
Where are you more likely to find people who are vitamin D deficient, those in
Canada or Florida? Why? - ANSWER>>Canada- adequate sunlight is needed for
synthesis of vitamin D
Scientific Thinking. At this point in the semester, you should be feeling more
confident about experimental design and reading/interpreting graphs. Explain
why the experiment shown in Figure 20.12C is better designed than that shown in
Figure 20.12B: - ANSWER>>Figure 20.12C shows the effects of when treatment is
over and show how long it actually lasts for after treatments are over
What happened to the surface area relative to volume as an animal body plan
gets larger? - ANSWER>>
What if the volume of a rectangular prism is 1000. What is the surface area? What
is surface divided by volume? - ANSWER>>
Now increase the width, depth, and height of the rectangular prism to their
highest values on the slider. What is the surface area to volume ration if you
increase volume to its highest value of 2744? - ANSWER>>
