In: Biology
Many proteins are enzymes (they catalyze reactions). Thus, it is necessary to review how reactions take place. Reduced organic compounds tend to contain stored energy in C–H bonds. As a general rule, the greater the number of C–H bonds, the greater the amount of potential energy stored in the molecule. Answer each question in the chart as it relates to the two reactions shown at the top. Be sure to be prepared to explain the reasoning behind your answers.
Reaction 1: CH4 + 2O2 → 2H2O + CO2 (methane) |
Reaction 2: 6 CO2 + 6 H2O → C6H12O6 + 6O2 |
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a. |
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b. Is the reaction spontaneous? |
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c. Is the reaction anabolic or catabolic? |
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d. Is ∆G (the change in free energy) positive or negative? |
In: Biology
What are some techniques and strategies to counteract biofilm formation? If using a source, please provide the link to the article. Thanks!
In: Biology
In: Biology
In: Biology
Contrast the role of spores in the land plant life cycle with the role of gametes; identify the structures associated with the dispersal of spores in bryophytes.
In: Biology
Draw a simple phylogenetic tree for two sister clades with a common ancestor. Define the following terms and use them to label your diagram: clade, node, root, and branch.
In: Biology
Imagine that you have a particular genetic trait and that you have four children. Two of the four children also possess this trait. Meanwhile, the other biological parent of your children does not possess the trait. •Explain why you think the trait in the scenario is dominant or recessive. •Based upon your response, describe why it would or would not be possible for the trait in the scenario to “skip” a generation. •Patterns of inheritance within organisms like pea plants, fruit flies, mice, and others are somewhat easy to determine since their mating practices can easily be controlled. Apart from controlling who mates with whom, what other characteristics make species like these ideal for studying genetics? •Select and describe a health problem that you believe has a genetic component at least partially inherited. If you do not identify an inherited health condition within your family, choose a disease that interests you or impacts a friend or other family member. Would you be interested in having genetic testing to determine whether you carry a genetic mutation for a particular disorder or a genetic predisposition for a disease? Why/why not? What are the advantages and disadvantages of determining your predisposition? •Explore the current state of research for the health problem you selected. Focus on one of the following to discuss as they relate to the genetics of the disease: •Cause •Testing/Screening/Prevention •Treatments/Therapies/Cures •Discuss similarities and differences between the diseases you and your classmates describe. Review the Discussion guidelines
In: Biology
This lymphocyte is responsible for killing infected cells following MHC I binding Group of answer choices
Cytotoxic T cells
Memory B cells
Helper T cells
Plasma B cells
In: Biology
The primary sequence of the peptide listed below.
H2N -(1) - (2) - (3) - (4) - COOH
H2N - Asp-Thr-Phe-Lys-COOH
H2N – D -T – F – K – COOH
Use the one letter amino acid code and identify from N-terminus to C-terminus.
a.Determine the pI of the peptide. (Round to 2 decimal points)
b. Would mutating residue #3 to Ala change the pI of the peptide? Explain.
c. Which type of noncovalent interaction would the indicated residue side chain make at the given pH? (H-bond, Hydrophobic or Van der Waals, or Ionic bond or Salt bridge)
Residue 1 @ pH 5.0
Residue 2 @ pH 6.0
Residue 3 @ pH 11.0
Residue 4 @ pH 10.0
d. Calculate the fraction of the peptides C-terminus protonated at pH 2.5 (Round to 2 decimal points)
In: Biology
linked genes due to physical linkage are:
a) found in the same species
b) genes on different chromosomes but in the same nucleus
c) found on the sex chromosome only (X or Y chromosomes)
d) genes on the same chromosome
e) restored to linked over time by recombination
there's more than one option correct. choose the correct answers
In: Biology
Question 12
a) List the organelles found in plant cells, in Amoeba, and common to both.
b) Does Amoeba have a cell wall? How can you tell?
c) How do the appearances of Amoeba differ in live cells and preserved cells?
In: Biology
In: Biology
please answer all the questions for microbiology :
1. Be able to draw and/or identify general bacterial cell shapes
and cell organizations
2. Know how to do a streak for isolation, and a spread plate and why you would do each
3. how to do a Gram stain, Endospore stain and acid fast stain and why you would do each.
4. Know the tools of the microbiologist and what they are used for
5. Be able to explain the results of the hand-wash experiment
6. Be able to identify and describe the results of the antiseptics/disinfectants, antibiotics experiment and interpret the results
7. Know what aseptic technique is and how to exhibit aseptic technique
In: Biology