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salmonelk636Lv1

28 Sep 2019

Chapter 05

1.What is thefunction of the neuroglia cells?

2.Illustrate andlabel the cell shape(s) and arrangement(s) of all epithelial tissuetypes.

3.Compare andcontrast the structure and function of the three muscletypes.

4.Cardiac musclecells differ from other muscle in part because they communicatethrough junctions called _____________.

All the questionsneed to answer 4 or 5 sentences and type the each number please.

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31 Aug 2023

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Related questions

21- All living things have 1 of 2 possible cell types. What are these two cell types and how is one type

distinguished from the other. Living organisms can be classified into 3 domains. What are the 3 domains.

22. Be familiar with the terms that describe the shape and arrangement of bacteria.

23. Be familiar with bacterial cell structure and function, including the external components of the cell, the

cell wall, the cell membrane, and internal structures.

24. What distinguishes a Gram-positive bacterium from a Gram-negative bacterium.

25. Microbial growth.

a. What are the physical requirements for growth.

b. What are the chemical requirements for growth.

c. How can bacteria be classified based on their oxygen requirements, temperature preferences, and pH preferences.

d. Bacterial cells divide by a process called binary fission.

e. What are the 4 phases of a typical bacterial growth curve.How does one measure bacterial growth.

26. Metabolism

a. catabolism versus anabolism

b. What are enzymes and how do they work.

c. What is an oxidation and what is a reduction.

d. fermentation versus respiration; What are the stages/steps of respiration/fermentation.

e. aerobic respiration versus anaerobic respiration

f. What is (are) the terminal electron acceptor(s) in fermentation and in aerobic and anaerobic respiration.

harlequingnu888

1. Water's molecular structure of water gives rise to 4 emergent properties that facilitate life on earth. Explain how the molecular structure of water contributes to each of these properties.

Explain why the structure of carbon makes it an excellent backbone for the molecules that compose living organisms.

2. Explain how water is involved in the synthesis and breakdown of biological macromolecules. in your answer, make sure to discuss the reactions that join and break apart monomers and why water is related to these processes.

Saturated and unsaturated fats have different fluidities at room temperature. Explain why this occurs.

Use the structural differences discussed in part 1 to explain why one type of fat can harm the cardiovascular system while the other has little negative effects.

Given that starch and cellulose are both made from the same monomer, why do you think that cellulose is so much more difficult for animal digestive systems to break down?

Most living organisms are extremely sensitive to changes in temperature and pH.

Use your knowledge of protein structure and the bonds involved to explain this sensitivity. make sure to be specific about levels of structure and bonds that are disrupted when temperature or pH change significantly.

Some living organisms such as gut microorganisms able to survive in environments with extreme pHs. What kind of modifications may they have in the amino acid composition of their proteins that facilitate their adaptation to this environment?

3. Explain how the internal structure of a cell isolated from the pancreas differs from that of a muscle cell.,

Compare the structures of animal and plant cells. How are they different? how are they the same?

Edema is a medical condition that results from fluid leaking out of blood vessels into surrounding tissues. using your knowledge of animal cell junctions, hypothesize what type of junction may be malfunctioning in individuals suffering from edema and explain why you believe your hypothesis to be correct.

burgundyplatypus4

1)What type of cell allows the immune system to respond morequickly if the same antigen is encountered a second time?

A)leukocytes

B)memory cells

C)macrophages

D)neutrophils

E)natual killer cells

2)why is the heart divided funtionally into two separate pumpsthat work in series?

A)because arteries carry blood away from the pump and veinsbring blood back to the pump

B)because blood decreases in pressure as it travels throughcirculation

C)because vessles in the vasculature keep blood moving in onedirection'

D)because there are four chambers to the heart

E)none of the above-the heart contracts in unison and is notdivided into two pumps

3)which of the following statements is correct?

A)Na+,K+, Ca2+ and Cl- are all more concentrated in theEXTRACELLULAR fluid

B)Na+, K+, Ca2+ and Cl- are all more concentrated in theEXTRACELLULAR fluid

C)Na+, Ca2+, and Cl- are all more concentrated in theEXTRACELLULAR fluid

D)K+, ca2+ are more concentrated in the EXTRACELLULAR fluid

E)K+, Ca2+ are more concentrated in the EXTRACELLULAR fluid

3)During skeletal muscle contraction:

A)the width of the H-zone decreases

B)the actin heads bind to myosin chain

C)ATP hydrolysis requires Ca2+ as a cofactor

D)tropomyosin changes conformation when Ca2+ binds

E)all of the above occur during skeletal muscle contraction

4)The rapid depolarization phase of myocardial contratile cellaction potential is due to the movement of which ion(s)?

A)Ca2+ flows into the cytosol

B)K+ flow out of the cytosol

C)Na+ flow into the cytosol

D)Ca2+ flow out of the cytosol

E)K+ flow into the cytosol

5)You are a physiology graduate student asked to study theeffect of ion permeability on the initiation of action potentials.You have isolated a cell with resting membrane potential of -70mVand have determined that the cell's threshold voltage is -55mV. Youthen change the cell to make it less permeable to K+ ions(Eions=-90mV)

With all ther condition staying the same, has cell's restingmembrane potential been DEPOLARIZED or HYPERPOLARIZED; and will thecell require a greater or smaller stimulus to reach threshold?

A)hyperpolarize; smaller

B)depolarize;greater

C)hyperpolarize;greater

D)depolarized; smaller

E)none of the above answers are possibe

6)Skeletal muscle cells are UNUSUAL in that they :

A)lack smooth endoplasmic reticulum

B)have no mitochondria

C)depend entirley on anaerobic respiration

D)have MULTIPLE nuclei

E)none of the baove are found in the skeletal muscle cells

7)What is the name for the autonomic nervous system synapses atthe neuroeffector?

A)electrical synapses

B)axon viscosities

C)bidirectional synapses

D)axon varicosities

E)light bulb synapse

8)Which cytokines are involvedin making cells resistant toviruses?

A)colony-stimulating actors

B)interferons

C)erythrpoietin

D)major histocompatibility complex

E)none of the above can make a cell resistant to a virus

9)If a person switiches from normal breathing to more shallowbreathing, whcih statement is true

A)tidal volume decreases

B)alveolar PO2 decreases

C)alveolar ventilation decreases

D)"a" and "b"

E)"a", "b', and "c"

10)Which scenerio supports hyperpolarization of pre-synapticcell?

A)allowing Cl- ions into the cell

B)allowing K+ ions to leave the cell

C)allowing Ca2+ ions into the cell

D)"a" and "b"

E)"a", "b", and "c"

11)The gap junctions in cardia muscle are part of specializedcell junctions that are localized to the__________.

A)transverse tubules

B)intercalated discs

C)Interdigitated fingers

D)desmosomes

E)high-end shppoinf malls

12)What role does myosin light chain kinase (MLCK) play insmooth muscle cell contraction?

A)dephosphorylates myosin

B)phosphorylates actin

C)phosphoylates myosin

D)dephosphorylates actin

E)both "a" and "c"Given that your forearm is 30cm long and yourbiceps inserts 2 cm away from your elbow joint, how much force mustyour biceps exert to hold up a 10kg weight?

A)0.67kg

B)6.0kg

C)20kg

d)150kg

e)600kg