A new species of microorganism is discovered in a barren desert habitat. Researchers find that the species does not require any from of water to exist. How would discovery of this species require modification of hypotheses about the origins of life on earth?

a. The idea of membrane-bound protobionts as the first cells would not necessarily be true any longer.

b. The presence of an electronic charge between water and lightning in Earth's early atmosphere would be modified.

c. Amino acids developing from the primordial soup of inorganic compounds would no longer be valid.

d. Hypotheses about life on Earth originating in early oceans would need to be revised.

Mrs. Anderson is being seen in the office to evaluate her general state of health. She is found to be malnourished and is suffering from lethargy and malaise. The provider suggests she should incorporate more protein in her diet, including some red meat, which has valuable amino acids and iron. The provider asks the medical assistant to provide Mrs. Anderson with a diet sheet listing certain meats and other foods high in protein. Mrs. Anderson tells the medical assistant she is a Seventh-Day Adventist and does not eat meat.

What should the medical assistant tell Mrs. Anderson about her dietary restrictions?

translation:

Genetic code; codon. How many codons are there? How many code for amino acids? What do the others do? What is the genetic code?

tRNA; anticodon; aminoacyl-tRNA synthetase. What key role do aminoacyl-tRNA synthetases play in translation? Why is there more than one?

Ribosome structure. What are ribosomes made of? Where are they made? Why are there 3 tRNA binding sites?

Translation initiation complex

Why wouldn't a transcribed mRNA not be translated immediately?

Elongation & translocation in translation. In translocation, which parts move relative to one another, and which don’t?

Termination; release factor

1. Draw the peptide DCTEVKKR at a ph 7.4 in the trans configuration.

2. Consider the peptide from #1 for the questions below.  

Calculate the pI of the above peptide. (I recommend showing your work – you can attach it on a separate sheet of paper or insert pictures).

3. Based on it’s sequence of amino acids and the answer to (2) above, suggest a possible function for the peptide.

4.What interactions would contribute most to tertiary structure? Explain your choice.

5.If a neutral mutation occurred, what do you think the peptide might be changed to? Explain your choice. (Multiple correct answers are possible).

home / study / math / statistics and probability / statistics and probability questions and answers / dr. francis has determined the sequence of a gene from four fish species. below, it is described ... Question: Dr. Francis has determined the sequence of a gene from four fish species. Below, it is described ... Dr. Francis has determined the sequence of a gene from four fish species. Below, it is described a segment of the sequence of this gene for the 4 species (NA-Sp, North Atlantic species; SA-Sp, South Atlantic species; Pc-Sp, Pacific species; Md-Sp,Mediterranean species). The letters below the codons are the amino acids encoded.

What would happen if the follicle could not produce Theca cells?

1) Ovulation would not occur.

2) Granulosa cells would not be able to produce androstenedione.

3) FSH would no longer be able to signal to granulosa cells.

4) All of the above.

Which of the following is TRUE?

1) Fatty acids released in response to increased levels of glucagon can be used as an alternative fuel source for muscles.

2) Cell membranes are very permeable to glucose, making it a good fuel source.

3) The SYN stimulates glucose diffusion into muscle cells.

4) Long exhaustive exercise causes reduced amino acid levels in the blood.

1. Which type of bonding is catalyzed by aminoacyl-tRNA-synthetases to form between amino acids and tRNAs?

Select one:

A.
Hydrogen bond

B.
Salt bridge

C.
Peptide bond

D.
Ester bond

E.
Glycosidic bond

2.What is added to methionine when it is used as the start codon?

Select one:

A. Phosphate

B. Formyl

C. N-acetyl

D. Sulphate

E. rRNA

3.

In translation (initiation, elongation and termination), the energy source is provided by ______.

Select one:

A. ATP

B. TTP

C. GTP

D. CTP

E. UTP

4.

Which of the following statements is correct regarding transcription and translation in eukaryotes?

Select one:

A.
During transcription, an mRNA molecule is synthesized from the DNA molecule.

B.
Translation takes place in the nucleus, while transcription takes place in the cytoplasm.

C.
During protein synthesis, translation occurs prior to transcription.

D.
During translation, a DNA sequence is used to synthesize an amino acid sequence.

E.
Transcription and translation occur in nucleus.

C programming - Implement a dynamic array, please read and implement the dynarray.c file with what is given

dynarray.h

/*
* This file contains the definition of the interface for the dynamic array
* you'll implement. You can find descriptions of the dynamic array functions,
* including their parameters and their return values, in dynarray.c. You
* should not modify anything in this file.
*/

#ifndef __DYNARRAY_H
#define __DYNARRAY_H

/*
* Structure used to represent a dynamic array.
*/
struct dynarray;

/*
* Dynamic array interface function prototypes. Refer to dynarray.c for
* documentation about each of these functions.
*/
struct dynarray* dynarray_create();
void dynarray_free(struct dynarray* da);
int dynarray_size(struct dynarray* da);
void dynarray_insert(struct dynarray* da, void* val);
void dynarray_remove(struct dynarray* da, int idx);
void* dynarray_get(struct dynarray* da, int idx);
void dynarray_set(struct dynarray* da, int idx, void* val);

#endif

dynarray.c

#include

#include "dynarray.h"

/*
* This is the definition of the dynamic array structure you'll use for your
* implementation. Importantly, your dynamic array implementation will store
* each data element as a void* value. This will permit data of any type to
* be stored in your array. Because each individual element will be stored in
* your array as type void*, the data array needs to be an array of void*.
* Hence it is of type void**.
*
* You should not modify this structure.
*/
struct dynarray {
void** data;
int size;
int capacity;
};

/*
* This function should allocate and initialize a new, empty dynamic array and
* return a pointer to it. The array you allocate should have an initial
* capacity of 2.
*/
struct dynarray* dynarray_create() {
return NULL;
}

/*
* This function should free the memory associated with a dynamic array. In
* particular, while this function should up all memory used in the array
* itself (i.e. the underlying `data` array), it should not free any memory
* allocated to the pointer values stored in the array. In other words, this
* function does not need to *traverse* the array and free the individual
* elements. This is the responsibility of the caller.
*
* Params:
* da - the dynamic array to be destroyed. May not be NULL.
*/
void dynarray_free(struct dynarray* da) {
return;
}

/*
* This function should return the size of a given dynamic array (i.e. the
* number of elements stored in it, not the capacity).
*/
int dynarray_size(struct dynarray* da) {
return 0;
}

/*
* This function should insert a new value to a given dynamic array. For
* simplicity, this function should only insert elements at the *end* of the
* array. In other words, it should always insert the new element immediately
* after the current last element of the array. If there is not enough space
* in the dynamic array to store the element being inserted, this function
* should double the size of the array.
*
* Params:
* da - the dynamic array into which to insert an element. May not be NULL.
* val - the value to be inserted. Note that this parameter has type void*,
* which means that a pointer of any type can be passed.
*/
void dynarray_insert(struct dynarray* da, void* val) {
return;
}

/*
* This function should remove an element at a specified index from a dynamic
* array. All existing elements following the specified index should be moved
* forward to fill in the gap left by the removed element. In other words, if
* the element at index i is removed, then the element at index i+1 should be
* moved forward to index i, the element at index i+2 should be moved forward
* to index i+1, the element at index i+3 should be moved forward to index i+2,
* and so forth.
*
* Params:
* da - the dynamic array from which to remove an element. May not be NULL.
* idx - the index of the element to be removed. The value of `idx` must be
* between 0 (inclusive) and n (exclusive), where n is the number of
* elements stored in the array.
*/
void dynarray_remove(struct dynarray* da, int idx) {
return;
}

/*
* This function should return the value of an existing element a dynamic
* array. Note that this value should be returned as type void*.
*
* Params:
* da - the dynamic array from which to get a value. May not be NULL.
* idx - the index of the element whose value should be returned. The value
* of `idx` must be between 0 (inclusive) and n (exclusive), where n is the
* number of elements stored in the array.
*/
void* dynarray_get(struct dynarray* da, int idx) {
return NULL;
}

/*
* This function should update (i.e. overwrite) the value of an existing
* element in a dynamic array.
*
* Params:
* da - the dynamic array in which to set a value. May not be NULL.
* idx - the index of the element whose value should be updated. The value
* of `idx` must be between 0 (inclusive) and n (exclusive), where n is the
* number of elements stored in the array.
* val - the new value to be set. Note that this parameter has type void*,
* which means that a pointer of any type can be passed.
*/
void dynarray_set(struct dynarray* da, int idx, void* val) {
return;
}

3.  Fit a multiple regression model that relates the salaryto education, work experience, and time spent at the bank so far.  

a - State what your model is.

b - Determine  whether the independent variables are significant, or not, at a level of significance of 5%.

c - Which independent variable is most significant in explaining salary? Which is least significant?

d - Is your overall  model significant? Provide statistical proof by conducting an F-test for overall fit of the regression. State the hypothesis to be tested, the p-value for your F-statistic, and your decision. How much weight of evidence is there in rejecting the null hypothesis?