Questions
Explain why speciation analysis is particularly important for Cr, As, and Se? What are the major...

Explain why speciation analysis is particularly important for Cr, As, and Se? What are the major valance (oxidation number) for each of these three elements? Describe their impact with regard to plant, and animal/human.

In: Biology

you performa throat culture on blood agar. After incubation, you notice several B-hemolytic colonies. what would...

you performa throat culture on blood agar. After incubation, you notice several B-hemolytic colonies. what would be the best way to determine whether the organism was Staphylococcus aureus or Streptococcus pyogenes, both which B-hemolytic?

a)look for motility

b)check for sensitivity to novobiocin

c)streak a MacConkey plate

d)streak a mannitol salts agar plate

In: Biology

1. Specific extracellular signal molecules require a cell surface receptor. What about the chemistry of these...

1. Specific extracellular signal molecules require a cell surface receptor. What about the chemistry of these signals prevents them from diffusing across the cell membrane?
2. What is the difference between endocrine signaling, paracrine signaling and autocrine signaling?
3. Why do cellular signal molecules bing to a receptor using noncovalent forces rather than a covalent bond?
4. What is the different between kinases and phosphates? How do they impact activity of the target protein. Please give an example that involves kinases and phosphates.
5. How do kinases recognize their substrates and the proteins they act on?
6. What is the difference between the active form and inactive form of GTPase superfamily of proteins?
7. How are second messengers different from first messengers?

In: Biology

1.what kind of medium is Mannitol Salts Agar (MSA) a) neither selective nor differential b)differential c)selective...

1.what kind of medium is Mannitol Salts Agar (MSA)

a) neither selective nor differential

b)differential

c)selective

d)both selective and differential

2.which of the following is the best method to distinguish Bacillus megaterium from Bacillus Subtilis?

a)use mannitol phenol red

b)streak a MacConkey plate

c)perform an endospore stain

d) perform a gram stain

In: Biology

What is the difference between “vertical inheritance” and “horizontal inheritance”? Does horizontal inheritance of genes provide...

What is the difference between “vertical inheritance” and “horizontal inheritance”? Does horizontal inheritance of genes provide evidence against Darwin’s theory of Evolution by Natural Selection? Why or why not?

In: Biology

1) Draw the whole cellular respiration cycle: Glycolysis, Bridge Step, and Krebs cycle (don't have to...

1) Draw the whole cellular respiration cycle: Glycolysis, Bridge Step, and Krebs cycle (don't have to draw the molecules, just the names and all of the intermediates).

In: Biology

QUESTION 1 Jim is blood type A, his brother John is type O and his sister...

QUESTION 1

Jim is blood type A, his brother John is type O and his sister Jane is type AB. What are the genotypes of their parents?
A.
IAi and IBi
B.
IAIA and IBIB
C.
IAi and IBIB
D.
IAIB and ii
E.
IAIA and IBi

QUESTION 2

Which of the following is true for alleles that show incomplete dominance?
A.
Heterozygotes have a genotype like the dominant allele.
B.
Homozygotes have a genotype like the recessive allele.
C.
Heterozygotes have a phenotype intermediate between the dominant and recessive alleles.
D.
Homozygotes have the same phenotype as the heterozygotes.
QUESTION 3

Which principle of inheritance concluded that when games are formed in meiosis, the two alleles of each gene separate from one another, and each gamete receives only one allele?
A.
independent assortment
B.
heterozygosity
C.
segregation
D.
dominance
  
QUESTION 4

Which term best describes a condition in which alleles at one locus can alter the expression of alleles at another locus?
A.
polygenic inheritance
B.
codominance
C.
multiple alleles
D.
pleiotropy
E.
epistasis
QUESTION 5

A single unit of genetic information located on a chromosome defines:
A.
a trait
B.
an allele
C.
a chromosome
D.
a locus
E.
a gene
QUESTION 6

The physical expression (appearance or function) of an organism's genes defines:
A.
genotype
B.
a single characteristic
C.
physiology
D.
mutation
E.
phenotype
QUESTION 7

Palomino horses (golden color with a blond mane) are an incompletely dominant trait produced by the combination of the chestnut color allele and the cream color allele. If you wanted to produce as many palominos as possible, which mating strategy below would be the best choice?
A.
Chestnut x Cream
B.
Palomino x Cream
C.
Palomino x Chestnut
D.
Palomino x Palomino
QUESTION 8

Which term best describes the effect of a single gene on multiple aspects of the phenotype?
A.
epistasis
B.
pleiotropy
C.
multiple alleles
D.
codominance
E.
polygenic inheritance
QUESTION 9

Which term best describes the separate expression of both alleles for a single trait in the same cell?
A.
multiple alleles
B.
codominance
C.
pleiotropy
D.
epistasis
E.
polygenic inheritance
QUESTION 10

One form of a gene found on a single chromosome defines:
A.
an allele
B.
a locus
C.
a chromosome
D.
a trait
E.
a gene
QUESTION 11

A chocolate lab (whose mother was a yellow lab) is mated with a black lab whose genotype is BbEe. What fraction of the offspring would be expected to be yellow labs?
A.
1/4
B.
none
C.
1/2
D.
3/16
E.
1/8
  
QUESTION 12

What type of allele is always expressed regardless of whether the individual is homozygous or heterozygous for it?
A.
Both the dominant and recessive alleles
B.
Recessive allele
C.
Allosteric allele
D.
Lethal allele
E.
Dominant allele
QUESTION 13

Given the parents AABBGgHhrr × AabbGgHhRr, assume simple dominance and independent assortment. What proportion of the progeny will be expected to have the genotype AaBbggHHrr?
A.
1/256
B.
1/64
C.
1/16
D.
1/32
E.
1/128
QUESTION 14

___________________ is defined as having two of the same type of allele for a particular trait.
A.
Homozygous
B.
Dominance
C.
Incomplete dominance
D.
Heterozygous
E.
Genotype

QUESTION 15

The physical position of an allele on a single chromosome defines:
A.
an allele
B.
a chromosome
C.
a gene
D.
a locus
E.
a trait
QUESTION 16

Which term best describes two or more genes affecting the phenotype in an additive fashion?
A.
codominance
B.
polygenic inheritance
C.
multiple alleles
D.
pleiotropy
E.
epistasis

In: Biology

    Homework 5: Sigmund Freud     Freud’s general theory of personality is called ___________________ theory. While...

    Homework 5: Sigmund Freud

    Freud’s general theory of personality is called ___________________ theory. While working with patients experiencing conversion disorders, Freud became convinced that all such cases were caused by unexpressed sexual motives.

    Freud viewed the mind as being composed of the three parts. The ___________________ functions entirely at the unconscious level and operates according to the ___________________ principle, which attempts to satisfy its needs by using wish-fulfilling mental images. A second part of the mind is called the ___________________, which can be thought of as the executive of personality and helps us to deal with the world through the reality principle. The only part of the mind containing a sense of morality is the ___________________, which is created mainly by parents. Parental punishment creates the moral inhibitions called conscience, whereas parental rewards establish a standard of conduct called the ego ideal.

    Freud believed that our personalities are formed as we pass through a series of developmental stages from infancy to adulthood. Stressful events experienced during a stage can leave the personality ___________________ at that stage. According to Freud, the developmental stages result from a shifting energy from one ___________________ zone to another. Since these stages represent the release of sexual energy, they are called ___________________ stages. The first stage, lasting from birth to one year of age, is called the ___________________ stage. If a person becomes fixated in the oral stage, he or she may engage in overeating and drinking.

    The second stage of development, from one to three years, is called the ___________________ stage. Fixations at this stage may lead to a personality that is either stingy and compulsive, called ___________________ ___________________, or cruel and disorderly, called ___________________ ___________________.

    From ages three to six, children are in the ___________________ stage, in which the genitals become the primary source of pleasure. During this stage, boys develop a sexual attraction to their mothers, referred to as the ___________________ ___________________. Boys also develop a fear of their fathers, called ___________________ ___________________. Girls develop desires for their fathers called the ___________________ ___________________. According to Freud, failure to resolve the phallic stage results in a phallic personality, characterized by egocentric selfishness, impulsiveness, and a lack of genuine feeling for others.

    From ages 6 to 11, children enter the ___________________ stage, during which sexual interest is relatively inactive. From age 11 through adulthood, the individual is in the ___________________ stage, in which sexual and romantic interests are directed towards one’s peers. Most modern revisions of psychoanalysis agree that Freud overemphasized ___________________  motivation, underemphasized positive aspects of personality and the importance of relationships, and was prejudiced against women.

Word Bank

Id

Phallic

Oedipus Complex

Erogenous

Anal Retentive

Psychoanalytic

Anal Expulsive

Sexual

Psychosexual

Genital

Latency

Oral

Electra Complex

Superego

Unconscious

Ego

Fixated

Defense mechanisms

Castration anxiety

Penis envy

Sublimination

Anal

Pleasure

Repression

In: Biology

Give one (1) example of a Tumour-Suppressor. Explain what its function is, what pathway(s) It is...

Give one (1) example of a Tumour-Suppressor. Explain what its function is, what pathway(s)

It is involved in, and how it contributes to cellular transformation and oncogenesis.

&

Give one (1) example of a Tumour-Suppressor. Explain what its function is, what pathway(s)

It is involved in, and how it contributes to cellular transformation and oncogenesis.

can u tell me please in briefly

In: Biology

Describe how influenza A and HIV differ in genome composition and what this difference means for...

Describe how influenza A and HIV differ in genome composition and what this difference means for their replication and generation of new virions.

can u tell me please in briefly

In: Biology

Vitamin C can bypass complexes 1 and 3 to directly reduce 2 cytochrome c proteins. What...

Vitamin C can bypass complexes 1 and 3 to directly reduce 2 cytochrome c proteins. What is the P:O ratio for vitamin C? Explain

In: Biology

Explain why fixed tissues can be used to perform fluorescence in situ hybridisation but not karyotyping....

Explain why fixed tissues can be used to perform fluorescence in situ hybridisation but not karyotyping. Compare what is being detected in each method and how samples are prepared.

In: Biology

Briefly explain why prokaryotic and eukaryotic cells are different. Include the description of what the difference...

Briefly explain why prokaryotic and eukaryotic cells are different. Include the description of what the difference is in each cell type.

In: Biology

How is compliance related to wall tension in the wall of a vessel? Which type vessel...

How is compliance related to wall tension in the wall of a vessel? Which type vessel is more compliant: veins or capillaries? And what property allows these vessels to be more compliant?

In: Biology

Both Siphonaptera and Phthiraptera are parasitic species. In what ways are these two orders similar and...

Both Siphonaptera and Phthiraptera are parasitic species. In what ways are these two orders similar and in what ways are they different? What are some of their adaptations to the parasitic mode of life? (5 points)

*please include link to any thing cited in your answer so I may reference any resources for more information

In: Biology