Questions
Gene is: LOC_Os05g38000 The gene name and chromosomal location. (Oryzabase) Number of exons and introns. (RGAP)...

Gene is: LOC_Os05g38000

  1. The gene name and chromosomal location. (Oryzabase)
  2. Number of exons and introns. (RGAP)
  3. Describe the expression pattern. This will require some research as there is no convienent Atlas.

Can someone please help with this question!

In: Biology

x Identifying the Skeletons You are a scientist specializing in investigating skeletal remains at the Earth...

x

Identifying the Skeletons

You are a scientist specializing in investigating skeletal remains at the Earth Museum of Natural History. In today's mail you receive a package of bones from some archeologists who have been hunting for the last known location of a famous explorer, Gabriela Molina, age 54, and her two assistants, Cordelia Kelley, age 28, and Ian Dumais, age 24. Included in the package are six well-preserved arm and leg bones, each of which is labeled. There is one radius (R1) and one ulna (U1); these are the two bones that connect the wrist and elbow. There are two humerus bones (H1 and H2). The humerus connects the shoulder and the elbow. There are two femurs (F1 and F2). The femur is the large bone in the thigh which connects the hip to the knee.

The data chart, prepared by your assistant, indicates the length of each of these bones. These measurements can be used to estimate how tall the deceased individuals might have been. Based on ratios between bone lengths and body height, your assistant has calculated possible heights for the people whose bones you received. There is no evidence, however, to show whether the bones belonged to a man or a woman. Since the ratios of bone lengths to body height are different for men and women, the chart includes estimates for both genders. For example, H1 is 39.1 centimeters long, and so could have come from a man who was 186.2-194.2 centimeters tall, or a woman who was 183.2-191.2 centimeters tall. Dr. Molina was approximately five feet five inches tall. Her female associate, Dr. Kelley, was approximately four feet ten inches tall. Mr. Dumais was significantly taller, but your files do not list a specific height for him. (Remember to convert height to metric system units cm – centimeters)

Specimen

Measurement

Male Height Range

Female Height Range

H1

39.1cm

186.2-194.2cm

183.2-191.2cm

H2

32.27cm

164.5-172.57cm

161.2-169.2cm

R1

19.5cm

146.49-154.49cm

141.5-149.45cm

U1

22.5cm

150.9-158.97cm

147.8-155.8cm

F1

49cm

188.5-196.57cm

169.5-177.5cm

F2

45.42cm

180.47-188.47cm

161.02-169.02cm

Questions
Write your answers.

  1. From the data on the chart, what evidence supports the theory that these bones might indeed be the remains of the lost scientists?
  2. Which bones could possibly belong to which scientist? How do you know?
  3. Which bone is most difficult to assign to a certain individual? Why?

In: Biology

What is the difference between covalent bonds and ionic bonds? Covalent bonds are formed between atoms...

What is the difference between covalent bonds and ionic bonds?


Covalent bonds are formed between atoms to form molecules; ionic bonds are formed between atoms to form compounds.



Covalent bonds involve the sharing of pairs of electrons between atoms; ionic bonds involve the sharing of single electrons between atoms.



Covalent bonds involve the sharing of electrons between atoms; ionic bonds involve the sharing of protons between atoms.



Covalent bonds involve the sharing of electrons between atoms; ionic bonds involve the electrical attraction between atoms.
Atoms whose outer electron shells contain 8 electrons tend to

form ions in aqueous solutions.


form hydrogen bonds in aqueous solutions.


be stable and chemically nonreactive, or inert.


be both chemically inert and gaseous at room temperature.

Orange juice has a pH of 3 and Black coffee has a pH of 5 This means that:

Orange juice has 100 times more H+ions than Black coffee


Orange juice is less acidic than Black coffee


Orange juice has 4 times more H+ions than Black coffee


Black Coffee has 100 times more H+ions than Orange juice







Nitrogen (N) is much more electronegative than hydrogen (H). Which of the following statements is correct about the atoms in ammonia (NH3)?

The nitrogen atom has a slight positive charge; each hydrogen atom has a slight negative charge.

Each hydrogen atom has a partial positive charge; the nitrogen atom has a partial negative charge.

Each hydrogen atom has a slight negative charge; the nitrogen atom has a strong positive charge.


The nitrogen atom has a strong positive charge; each hydrogen atom has a strong positive charge.

Atomic number is best described as:

the number of protons in atom


the number of neutrons in atom


the number of electrons in the outermost shell of atom


only A and B

When two atoms are equally electronegative, they will interact to form

hydrogen bonds.


van der Waals interactions.


polar covalent bonds.


nonpolar covalent bonds.

The atomic number of neon is 10. Therefore, which of the following is most correct about an atom of neon?

It has an atomic mass of 10 daltons.


It has 8 electrons in its outer electron shell.


It is inert.


It has 8 electrons in its outer electron shell and it is inert.
About 25 of the 92 natural elements are known to be essential to life. Which four of these 25 elements make up approximately 96% of living matter?

carbon, sodium, hydrogen, nitrogen


carbon, oxygen, phosphorus, hydrogen

carbon, hydrogen, nitrogen, oxygen

oxygen, hydrogen, calcium, nitrogen

Which of the following is not considered to be a weak molecular interaction?

an ionic bond in the presence of water

a covalent bond


a van der Waals interaction


a hydrogen bond

Which statement is NOT true about the pH scale?

pH has a balanced level of H+and OH-


Anything below pH 7 is acidic and above pH7 is basic

The scale indicates the relative concentrations of hydrogen and hydroxyl ions in a solution.


all given statements are true

A covalent chemical bond is one in which

outer-shell electrons of two atoms are shared so as to satisfactorily fill the outer electron shells of both atoms.


protons and neutrons are shared by two atoms so as to satisfy the requirements of both atoms.


outer-shell electrons of one atom are transferred to fill the inner electron shell of another atom.


electrons are removed from one atom and transferred to another atom so that the two atoms become oppositely charged.





A covalent bond is likely to be polar when

one of the atoms sharing electrons is much more electronegative than the other atom.


one of the atoms has absorbed more energy than the other atom.


oxygen is one of the two atoms sharing electrons.


the two atoms sharing electrons are equally electronegative.

In what way are elements in the same column of the periodic table the same?

They have the same number of electron shells.


They have the same number of electrons in their valence shell.

They have the same number of protons.


They have the same number of neutrons
The nucleus of a nitrogen atom contains 7 neutrons and 7 protons. Which of the following is a correct statement concerning nitrogen?

The nitrogen atom has a mass number of 14 and an atomic mass of 7 grams.


The nitrogen atom has a mass number of approximately 7 daltons and an atomic mass of 14.


The nitrogen atom has a mass number of 14 and an atomic number 7

The nitrogen atom has a mass number of approximately 14 daltons and an atomic mass of 7.

Knowing just the atomic mass of an element allows inferences about which of the following ?

the number of protons plus neutrons in the element


the number of neutrons in the element


the chemical properties of the element

the number of protons in the element




_______have identical molecular formulas but the atoms in each molecule are arranged differently?


organic



homomolecules



isomer



isotope

Which statement is NOT true about ionic bonds?


electrons are completely lost or gained in ion formation



one atom acts as an electron donor and another acts as an electron acceptor

a salt such as NaCl is formed by an ionic reaction


an ion has the same number of electrons as a non-ionic atom of the same element
Why is each element unique and different from other elements in chemical properties


Each element has a unique atomic mass.


Each element has a unique atomic weight.



Each element has a unique number of neutrons in its nucleus


Each element has a unique number of protons in its nucleus.

Which of the following explains most specifically the attraction of water molecules to one another?

hydrogen bond



ionic bond



nonpolar covalent bond



polar covalent bond




Which bond or interaction would be difficult to disrupt when compounds are put into water?

ionic bond



hydrogen bond



van der Waals interaction



covalent bond

What results from an unequal sharing of electrons between atoms?


a polar covalent bond



an ionic bond



a hydrogen bond



a nonpolar covalent bond

which of the following molecules contains the most polar covalent bond?


H2O



H2



CO2


O2

Two atoms appear to have the same mass number. These atoms


must have the same number of protons + neutrons.


must have the same atomic number.


must have the same chemical properties.

must have the same number of electrons.





Electrons exist only at fixed levels of potential energy. However, if an atom absorbs sufficient energy, a possible result is that


an electron may move to an electron shell closer to the nucleus.



an electron may move to an electron shell farther away from the nucleus.



the atom would become a positively charged ion, or cation, and become a radioactive isotope.

the atom may become a radioactive isotope.

How many electrons are involved in a triple covalent bond?


one


six

three


two

From its atomic number of 15, it is possible to predict that the phosphorus atom has


15 neutrons.



15 electrons.



15 protons and 15 electrons.



15 protons.

Atoms of an element react is most related to the


number of electrons in the outermost shell



number of neutrons in the nucleus


number of electrons in the innermost shell

size of the nucleus



In: Biology

Which of the following chemical groups is important in energy transfer? -OH hydroxyl group -NH2 amino...

Which of the following chemical groups is important in energy transfer?

-OH hydroxyl group

-NH2 amino group

-SH sulfhydryl group

-OPO32- phosphate group

In: Biology

Use the Heap class provided to implement a sort routine in a Main class where the...

Use the Heap class provided to implement a sort routine in a Main class where the user enters a series of values, each value is then pushed onto a heap, then the values are printed out in ascending order.

public class Heap {
        public static final int SIZE = 1025;
        
        public Heap() {
                elt = new Element[SIZE];
                lastLoc = 0;
        }
        
        public void push(String k, Object o) {
                if (!fullCheck()) {
                        lastLoc++;
                        elt[lastLoc] = new Element(k,o);
                        int loc = lastLoc;
                        while (loc > 1 && elt[loc].key.compareTo(elt[loc/2].key) < 0) {
                                Element hold = elt[loc];
                                elt[loc] = elt[loc/2];
                                elt[loc/2] = hold;
                                loc = loc/2;
                        }
                }
        }       

        public void pop() {
                if (!emptyCheck()) {
                        elt[1] = elt[lastLoc];
                        lastLoc--;
                        int loc = 1;
                        while (2*loc <= lastLoc) {
                                loc = 2*loc;
                                if (loc < lastLoc && elt[loc +1].key.compareTo(elt[loc].key) < 0) loc=loc+1;
                                if (elt[loc].key.compareTo(elt[loc/2].key) < 0) {
                                        Element hold = elt[loc/2];
                                        elt[loc/2] = elt[loc];
                                        elt[loc] = hold;
                                }
                        }
                }
        }               
        
        public Object top() {
                return elt[1].payload;
        }

        public Object topKey() {
                return elt[1].key;
        }

        public boolean emptyCheck() {
                return (lastLoc == 0);
        }
        
        public boolean fullCheck() {
                return (lastLoc == SIZE-1);
        }
        
        
        private Element[] elt;
        private int lastLoc;
}
public class Element {
        public Element(String s) {
                key = s;
                payload = null;
        }


public Element(String s, Object obj) {
                key = s;
                payload = obj;
        }
        public String key;
        public Object payload;

}

In: Biology

For the ribosomes on nuclear envelope, what would be the proteins made here do?

For the ribosomes on nuclear envelope, what would be the proteins made here do?

In: Biology

sanger sequencing, and how base identity (A,T,C,G) is detected using fluorescence. Can you explain what it...

sanger sequencing, and how base identity (A,T,C,G) is detected using fluorescence. Can you explain what it means that the DNA is labeled with a fluorescent tag, and where that tag is located?

In: Biology

Cytogenetics of pumpkin

Cytogenetics of pumpkin

In: Biology

Kay is the nurse supervisor of a small clinic located on the campus of a Midwestern...

Kay is the nurse supervisor of a small clinic located on the campus of a Midwestern college. In a single week, she treated fifteen students (ages 19-24) with similar symptoms. They each appeared at the student clinic in various stages of the development of a red macular rash. It seemed to start on the face and spread to the trunk and extremities. Each complained of having had a severe cold, including sore throat, headache, and cough, for a few days previously.

After observing tiny red patches with white centers on the oral mucosa, next to the molars, Kay made her diagnosis. She warned each student that their infection was extremely contagious and placed them in isolation. She also warned them of the need for strict bed rest because of the dangerous complications of this infection. Chemotherapy was limited to acetaminophen for comfort. Kay checked each student’s immunization record and found it complete and up-to-date.

QUESTION 1

Which of these is likely to be Kay’s diagnosis?

Chickenpox

Rubeola

Rubella

Scarlet Fever

One of the infected students, Sara, shared a small apartment with two other students. However, they had left on a long weekend trip on Thursday and she did not develop rash until Saturday. These roommates would not "catch" the infection from Sara unless they returned to the apartment before the rash disappeared.

True

False

In: Biology

A cis-acting mutation that leads to MINIMAL expression of the lac operon would most likely be...

A cis-acting mutation that leads to MINIMAL expression of the lac operon would most likely be in the CAP binding site. Is this true or false, and why? Thanks!

In: Biology

You are the Coroner. Identify and explain the MANNER of death in the following scenarios (adapted...

You are the Coroner. Identify and explain the MANNER of death in the following scenarios (adapted from Saferstein, 2018, Chapter). Why are you making that determination? In some cases, what more would you need to know about the scene or history?

A. Death due to a motor vehicle accident in which a person lost control of their vehicle in bad weather

B. Death due to a motor vehicle accident in which a person was killed when their car was stopped at a stop sign and they were struck by another vehicle which was street racing.

C. Death due to a contact head wound to the back of the head

D. Death due to carbon monoxide poisoning of an entire family asleep in their beds in different rooms in the house

E. Death due to carbon monoxide poisoning where the body is found in a car parked in a garage

F. Death of a person using fentanyl

G. Death of an elderly person from pneumonia after a fall.

H. Death of an elderly person from pneumonia after being mugged and thrown to the ground

I. Skeletonized remains found in the forest three years after being last seen alive

In: Biology

What role do KNOX proteins have in maintaining the apical meristem?

What role do KNOX proteins have in maintaining the apical meristem?

In: Biology

You are driving to the shops… What information is being detected by you/your body? Provide one...

You are driving to the shops…

  1. What information is being detected by you/your body? Provide one external and one internal example. For each, describe how the sensory information is being detected, integrated and processed in the CNS? (2 marks, 2 min)

  2. Whilst you are driving a car, what is your body doing to meet its needs/your goals? What is your body doing? Provide one voluntary and one involuntary example. How is the response being generated; what effector pathways are involved? (2 marks, 2 min)

  3. Now, tell me about the role of an example protein, expressed on an example cell in one of your examples. What is the protein/where is it expressed/what does it do (and why is this important/relevant)? (2 marks, 2 min)

  4. Your protein is dysfunctional. Provide two reasons for why a protein may not be able to fulfil its functional role, and for each, indicate the permanence of this outcome. (2 marks, 2 min)

  5. What are the consequences… build from micro to macro: cell/s - tissue/s - organ/s - system/s. Physiologically, what can you not do (and why is that a problem)? (2 marks, 2 min)

In: Biology

Weak interactions among amino acids that stabilize the tertiary structure of the protein include (list five):

Weak interactions among amino acids that stabilize the tertiary structure of the protein include (list five):

In: Biology

Look for an academic scientific research article on viruses that can be used as a biological...

Look for an academic scientific research article on viruses that can be used as a biological weapon.
Summarize the article in your own words and include: objective, method, result, and conclusion (four sentences). Submit the complete reference (APA style).

In: Biology