Use the mRNA codon chart to translate this DNA message:
|
DNA |
TAC |
TGC |
CAC |
ATT |
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mRNA |
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amino acid |
produced?
Which of the following bird species are most closely related?
A. Picoides borealis and Phylloscopus borealis
B. Numenius borealis and Picoides borealis sapiens
C. Numenius americanus and Grus Americana
D. Picoides villosus and Picoides borealis
The similarity of the embryos of chickens and humans is evidence of ________.
A. biochemical similarities
B. developmental similarities
C. morphological similarities
D. biogeography
If the coat of a virus about to attack a bacterium is labeled with radioactive sulfur and the DNA is labeled with
radioactive phosphorous, over time
The joining of amino acid 2 to amino acid 3 (letter "D") will be by
|
a. |
an ionic bond. |
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b. |
protein linkage. |
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c. |
a peptide bond. |
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d. |
hydrogen linkage. |
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e. |
a hook. |
In: Biology
Science of Nutrition
An athlete is seeking your advice before running a 10-mile race regarding types of food intake before, during and after the race. (What foods that would aid in their performance as far as nutrition wise)
Please include in your advice the importance of taking carbohydrates, and how much amino acids supplements are effective.
Finally, what advice you give to the athlete if he inquired about taking an energy pill to boost his performance?
In: Nursing
. Protein X is a single polypeptide with three functional domains. The first is a globular domain which has a protein binding domain and contains both alpha-helices and beta-sheets. The second domain is a group of seven alpha-helices that contain mostly hydrophobic amino acids. The third domain appears to be an enzymatic domain which transfers a phosphate group from ATP to a hydroxyl group on another protein. Postulate the function of this protein and give reasons that support this prediction.
In: Biology
Please re-order the steps below to accurately represent the events that occur during transcription and translation.
mRNA is sent out into the cytoplasm where it will bind with a ribosome
Helicase "unzips" DNA by breaking the hydrogen bonds between base pairs
The ribosome reads the mRNA 3-letters at a time
The tRNA that matches the code brings in the Amino Acids to add to the protein being built
RNA Polymerase starts building mRNA from 5' to 3' and replaces Thymine with Uracil
In: Biology
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Dopamine (DA) |
Norepinephrine (NE) |
Serotonin (5-HT) |
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In: Biology
All of the following are possible results of excessive protein intake, except ____________
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Excess protein may become a burdensome on kidneys as they excrete urea. |
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protein can be used to make glucose |
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dehydration |
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excess protein can be stored as fat |
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all of the above are possible results. |
1 points
QUESTION 2
The two phases of protein synthesis in the cell are ____________ which takes place in the __________, and ___________ which takes place in the _______________
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transcription in the nucleus, and translation in the ribosomes. |
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translation in the nucleus, and transcription in ribosomes |
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transcription in the nucleus, and translation in the mitochondria. |
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translation in the nucleus, and transcription in the golgi apparatus. |
2 points
QUESTION 3
Proteins are involved in all of the following functions except ___________
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promoting bowel function |
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making hormones |
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making enzymes |
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aiding in immune function |
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providing cell structure |
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providing energy |
1 points
QUESTION 4
Positive Nitrogen balance results when protein intake exceeds its loss. This is expected in all of the following conditions, except _____
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during pregnancy |
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during growth spurt |
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in athletic training |
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a feverish person with loss of appetite |
1 points
QUESTION 5
Which of the following is classified as a complete protein?
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kidney beans |
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whole-grain bread |
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fat-free milk |
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corn tortillas |
1 points
QUESTION 6
Vegetarian (vegan) diet is becoming more popular. All of the following statements are correct, except ________
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There is a concern about developing vitamin B-12 deficiency as well as zinc and calcium. |
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Vegan diet is often rich in antioxidants, dietary fibers, and phytochemicals. |
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It is possible to get all nutrientional requirements from vegan diet, if planned well |
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A dish made of beans (limited in methionine) and rice (limited in lysine) will supply the body with all essential amino acids. |
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it is important to compensate for deficiencies in vegan diet, Vegans can use fortified food or take supplements |
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all of the above statements are correct regarding vegetarian diet. |
1 points
QUESTION 7
For a healthy adult whose weight is 60 kg, total RDA is ___________ per day, and % of daily energy obtained from protein should be __________ respectively.
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4.8 grams, 8% |
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36 grams, 30% |
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48 grams, 10-35% |
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60 grams, 20-35% |
2 points
QUESTION 8
Hemoglobin is a protein that contains 4 polypeptide chains. Its structure is considered _________
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primary |
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secondary |
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tertiary |
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quaternary |
1 points
QUESTION 9
This process involves synthesis of nonessential amino acids, while that process involves making glucose from non-carbohydrate source, respectively
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transamination, ketogenesis |
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deamination, gluconeogenesis |
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transamination, gluconeogenesis |
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deamination, glycolysis |
1 points
QUESTION 10
Marasmus is protein-deficiency malnutrition, while Kwashiorkor is energy-deficit malnutrition
True
False
In: Nursing
1.The following data were obtained in a study of an enzyme known to follow Michaelis-Menten kinetics:
2/27/ 20
V0 (mol/min)
217 325 433 488 647
Substrate added (mmol/L)
0.8 2 4 6 1,000
The Km for
A) 1 mM., B) 1000mM, C) 2mM, D ) 4mM, E) 6mM
this enzyme is approximately:
2. To
A) the enzyme concentration.
B) the initial velocity of the catalyzed reaction at [S] >> Km.
C) the initial velocity of the catalyzed reaction at low [S].
D) the Km for the substrate.
E) both the enzyme concentration and the initial velocity of the catalyzed reaction at
[S] >> Km.
3. An enzyme that can convert glucose into fructose is a member of which class of enzymes?
A) Oxidoreductases, B)Transferase, C) Hydrolases, D) Lyases, E) Isomerases
4. Which amino acid is NOT capable using its side chain (R
group) to participate in general acid-base catalysis?
A) Asp, B) His, C) Ser, D) Val, E) Lys
calculate the turnover number of an enzyme, you need to know:
5. Treatment of methanol poisoning by using ethanol is an
example of what type of enzyme inhibition?
A) mixed inhibition, B) uncompetitive inhibition
C) noncompetitive inhibition D) Competitive inhibition, E) Suicide Inhibition
6. What functional groups are present on this molecule?
A) ether and aldehyde, B) Hydroxyl and Aldehyde, C) Hydroxyl and Carboxylic acid, D) hydroxyl and Ester , E) hydroxyl and ketone
7. Which statement about intrinsically disordered proteins is TRUE?
A) B) C)
D) E)
They contain small hydrophobic cores.
They represent misfolded conformations of cellular proteins.
They have no stable three-dimensional structure and therefore have
no cellular function.
They are responsible for proteostasis.
They can interact with multiple protein-binding partners and are
central to protein interaction networks.
8.
protein aggregate?
Which disease is NOT one characterized by or associated with an unfolded
A) Alzheimer disease, B) Diabetes, C) Parkinson Disuease
D) Scurvy, E) All of these diseases are linked to unfolded protein
aggregates
9. Which amino acid when repeated six to ten times at the N- or C-terminal ends of a protein allows that protein to bind to Ni2+ ions?
a.Glu, b. His, c. Ala, d. Tyr, e. Asp
10. The biochemical activity of a protein, such as its enzymatic activity, is called its _____ function.
a. phenotypic , b. genotypic, c. cellular, d. molecular, e. organismal
In: Biology
(b) After the newly formed protein leaves the ribosome the first amino acid in the protein, methionine, is removed. What specific type of enzyme catalyzes this reaction?
(c) When benzo[a]pyrene is formed in the burning of meat. What substance(s) in the meat is the source of the aromatic rings in the product?
(d) How do drug manufacturers make most drugs water soluble?
(e) What is the name of the reaction that would convert a RNA nucleoside into a DNA nucleoside?
In: Biology
Implement a queue - C programming, please read the instruction carefully and implement queue.c using dynamic array structure given dynarray.h and dynarray.c below
The second ADT you'll implement for this assignment is a queue.
For this assignment, the interface for the queue (i.e. the structures and the prototypes of functions a user of the queue interacts with) is already defined for you in the file queue.h. Your first task in this assignment is to implement definitions for the functions that comprise this interface in queue.c.
Note that you may not modify the interface definition with which you are provided. Specifically, do not modify any of the already-defined queue function prototypes. We will use a set of tests to verify your implementation, and if you change the queue interface, it will break these tests, thereby (negatively) affecting your grade. Beyond the already-defined interface, though, feel free to add any additional functions or structures your queue implementation needs.
The queue functions you'll need to implement are outlined briefly below. All of these functions use a type called struct queue, which is defined in queue.c and represents the queue itself. For more details, including information on function parameters and expected return values, see the documentation provided in queue.c.
queue_create() - This function should allocate, initialize, and return a pointer to a new queue structure.
queue_free() - This function should free the memory held within a queue structure created by queue_create(). Note that this function only needs to free the memory held by the queue itself. It does not need to free the individual elements stored in the queue. This is the responsibility of the calling function.
queue_isempty() - This function should return 1 if the queue is empty and 0 otherwise.
queue_enqueue() - This function should insert a new element at the back of the queue. This operation must have O(1) average runtime complexity.
queue_front() - This function should return the value stored at the front of the queue without removing it. This operation must have O(1) average runtime complexity.
queue_dequeue() - This function should dequeue a value from the queue and return the dequeued value. This operation must have O(1) average runtime complexity.
Importantly, the queue you build MUST use a dynamic array as its underlying data storage. You are provided with a dynamic array implementation in dynarray.h and dynarray.c that you may use for this purpose. Feel free to modify this dynamic array implementation as needed to implement your queue, with the constraint that you may only interact with the dynamic array implementation via its interface functions. In particular, you may not directly access or modify the fields of the dynamic array structure (struct dynarray). In other words, you may not change the fact that dynarray.h only contains a forward declaration of struct dynarray, and you may not redefine the dynamic array structure in queue.h or queue.c.
Also, note that, as with the data structures you implemented in assignment 1, values in the queue will be stored as void pointers.
dynnaray.h
/*
* This file contains the definition of the interface for a dynamic
array.
* You can find descriptions of the dynamic array functions,
including their
* parameters and their return values, in dynarray.c.
*/
#ifndef __DYNARRAY_H
#define __DYNARRAY_H
/*
* Structure used to represent a dynamic array. You may not change
the fact
* that only a forward declaration of the dynamic array structure is
included
* here. In other words, you can't define the fields of the struct
here.
*/
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
/*
* This file contains a simple implementation of a dynamic array.
See the
* documentation below for more information on the individual
functions in
* this implementation.
*/
#include
#include
#include "dynarray.h"
/*
* This structure is used to represent a single dynamic array.
*/
struct dynarray {
void** data;
int size;
int capacity;
};
#define DYNARRAY_INIT_CAPACITY 4
/*
* This function allocates and initializes a new, empty dynamic
array and
* returns a pointer to it.
*/
struct dynarray* dynarray_create() {
struct dynarray* da = malloc(sizeof(struct dynarray));
assert(da);
da->data = malloc(DYNARRAY_INIT_CAPACITY *
sizeof(void*));
assert(da->data);
da->size = 0;
da->capacity = DYNARRAY_INIT_CAPACITY;
return da;
}
/*
* This function frees the memory associated with a dynamic array.
Freeing
* any memory associated with values stored in the array is the
responsibility
* of the caller.
*
* Params:
* da - the dynamic array to be destroyed. May not be NULL.
*/
void dynarray_free(struct dynarray* da) {
assert(da);
free(da->data);
free(da);
}
/*
* This function returns 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) {
assert(da);
return da->size;
}
/*
* Auxilliary function to perform a resize on a dynamic array's
underlying
* storage array.
*/
void _dynarray_resize(struct dynarray* da, int new_capacity)
{
assert(new_capacity > da->size);
/*
* Allocate space for the new array.
*/
void** new_data = malloc(new_capacity * sizeof(void*));
assert(new_data);
/*
* Copy data from the old array to the new one.
*/
for (int i = 0; i < da->size; i++) {
new_data[i] = da->data[i];
}
/*
* Put the new array into the dynarray struct.
*/
free(da->data);
da->data = new_data;
da->capacity = new_capacity;
}
/*
* This function inserts a new value to a given dynamic array. The
new element
* is always inserted at the *end* 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) {
assert(da);
/*
* Make sure we have enough space for the new element. Resize if
needed.
*/
if (da->size == da->capacity) {
_dynarray_resize(da, 2 * da->capacity);
}
/*
* Put the new element at the end of the array.
*/
da->data[da->size] = val;
da->size++;
}
/*
* This function removes an element at a specified index from a
dynamic array.
* All existing elements following the specified index are moved
forward to
* fill in the gap left by the removed element.
*
* 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) {
assert(da);
assert(idx < da->size && idx >= 0);
/*
* Move all elements behind the one being removed forward one
index,
* overwriting the element to be removed in the process.
*/
for (int i = idx; i < da->size - 1; i++) {
da->data[i] = da->data[i+1];
}
da->size--;
}
/*
* This function returns the value of an existing element in a
dynamic array.
*
* 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) {
assert(da);
assert(idx < da->size && idx >= 0);
return da->data[idx];
}
/*
* This function updates (i.e. overwrites) 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) {
assert(da);
assert(idx < da->size && idx >= 0);
da->data[idx] = val;
}
queue.h
/*
* This file contains the definition of the interface for the queue
you'll
* implement. You can find descriptions of the queue functions,
including
* their parameters and their return values, in queue.c. You should
not
* modify anything in this file.
*/
#ifndef __QUEUE_H
#define __QUEUE_H
/*
* Structure used to represent a queue.
*/
struct queue;
/*
* Queue interface function prototypes. Refer to queue.c for
documentation
* about each of these functions.
*/
struct queue* queue_create();
void queue_free(struct queue* queue);
int queue_isempty(struct queue* queue);
void queue_enqueue(struct queue* queue, void* val);
void* queue_front(struct queue* queue);
void* queue_dequeue(struct queue* queue);
#endif
queue.c
#include
#include "queue.h"
#include "dynarray.h"
/*
* This is the structure that will be used to represent a queue.
This
* structure specifically contains a single field representing a
dynamic array
* that should be used as the underlying data storage for the
queue.
*
* You should not modify this structure.
*/
struct queue {
struct dynarray* array;
};
/*
* This function should allocate and initialize a new, empty queue
and return
* a pointer to it.
*/
struct queue* queue_create() {
return NULL;
}
/*
* This function should free the memory associated with a queue.
While this
* function should up all memory used in the queue itself, it should
not free
* any memory allocated to the pointer values stored in the queue.
This is the
* responsibility of the caller.
*
* Params:
* queue - the queue to be destroyed. May not be NULL.
*/
void queue_free(struct queue* queue) {
return;
}
/*
* This function should indicate whether a given queue is currently
empty.
* Specifically, it should return 1 if the specified queue is empty
(i.e.
* contains no elements) and 0 otherwise.
*
* Params:
* queue - the queue whose emptiness is being questioned. May not be
NULL.
*/
int queue_isempty(struct queue* queue) {
return 1;
}
/*
* This function should enqueue a new value into a given queue. The
value to
* be enqueued is specified as a void pointer. This function must
have O(1)
* average runtime complexity.
*
* Params:
* queue - the queue into which a value is to be enqueued. May not
be NULL.
* val - the value to be enqueued. Note that this parameter has type
void*,
* which means that a pointer of any type can be passed.
*/
void queue_enqueue(struct queue* queue, void* val) {
return;
}
/*
* This function should return the value stored at the front of a
given queue
* *without* removing that value. This function must have O(1)
average runtime
* complexity.
*
* Params:
* queue - the queue from which to query the front value. May not be
NULL.
*/
void* queue_front(struct queue* queue) {
return NULL;
}
/*
* This function should dequeue a value from a given queue and
return the
* dequeued value. This function must have O(1) average runtime
complexity.
*
* Params:
* queue - the queue from which a value is to be dequeued. May not
be NULL.
*
* Return:
* This function should return the value that was dequeued.
*/
void* queue_dequeue(struct queue* queue) {
return NULL;
}
In: Computer Science
The bacterium Escherichia coli (or E. coli) is a single-celled organism that lives in the gut of healthy humans and animals. When grown in a uniform medium rich in salts and amino acids, these bacteria swim along zig-zag paths at a constant speed of 20 um/s. The figure shows the trajectory of an E. coli as it moves from point A to point E. Each segment of the motion can be identified by two letters, such as segment BC.
What is the magnitude of the bacterium's average velocity for the entire trip?
In: Physics