BIOL 101 quiz 6 complete solutions correct answers key

Liberty University BIOL 101 quiz 6 complete solutions correct answers key

7 different versions

The following is a list of methods by which human conception can be postponed. Which one blocks sperm on its journey from the testicles to the fallopian tubes?

The quintessential (most basic/most important) moment of fertilization of the egg by the sperm cell occurs when

Sperm cell production occurs within the interior lining of the ______________.

Which of the following is a biological approach to determining when a mother and her conceptus become separate individuals?

About the time of ____________, male genetic information from the sperm begins to be translated into protein products. This is used by some to determine when a mother and her conceptus become separate individuals.

Once the mature follicle is the correct size, the estrogen level in the bloodstream causes the pituitary gland to suddenly secrete high levels of _________ causing the mature follicle to rupture from the ovary surface.

For about half of a woman’s monthly cycle, the hormone ________ leaves the pituitary gland and, at the ovary, signals it to bring a more advanced _________ to complete maturity.

Penetration of the egg’ zona pellucida by the sperm cell is a process driven by

The reproductive system uses the hormones ________ and (later on) ____________ to “think ahead”. They guide the preparation of the uterus for its role in supporting pregnancy.

A mature follicle has formed which of the following structures?

In the human life cycle, diploid cells undergo a cell division process called __________. The resulting haploid cells later fuse during ___________ which regenerates diploid cells.

One disadvantage of sexual reproduction is

Which of the following is an example of asexual reproduction in plants?

Meiotic Prophase I is different from a mitotic prophase. In meiotic prophase

The process of meiosis generates genetic variability in the resulting sex cells (gametes). It does this by

The stage of meiosis in which the centromere of each chromosome can first be seen to be attached to two sister chromatids:

Dilation of the cervix is a chemical procedure that

Which of the following different methods by which human conception can be postponed involves altering the hormonal chemistry of the female partner?

The stages of meiosis are

In Iris plants asexual reproduction results from

Which of the following birth control methods is primarily contraceptive and secondarily abortive in its effects?

Aristotle, the “Father of Biology”, believed that a human being became a person

Meiosis generates genetic variability in the resulting sex cells (gametes). For each of 23 pairs of chromosomes, the haploid egg cell

Peter Singer and other self-oriented societal pragmatists would define the term “person” as someone who

The specialized process that halves the number of chromosomes during sex cell formation is named

What process prevents one’s children from looking exactly like either parent?

If 100 sperm cells reach an egg, how does the egg respond such that only one sperm cell effectively fertilizes it?  As soon as a sperm cell touches the egg’s plasma membrane

Which sequence below traces in the correct order the path of a sperm to the egg it fertilizes

Which cell division in meiosis is most like mitosis

How long does it normally take from the time of fertilization to the time of gestation

Which male accessory gland of the male reproductive system provides protection for sperm while in the harsh acidic female reproductive tract

What is the role of luteinizing hormone (LH) in human reproduction

Primary germ cells migrate through ________ different regions of embryonic tissue before reaching their final site of differentiation within ovaries or testes

How does a primary spermatocyte differ from a primary germ cell?  Primary germ cells

Which birth control method is potentially abortive, rather than purely contraceptive

In order for “sexuality” to evolve between two strains of an asexual unicellular organism, a mutation that should occur early in the process would be one that causes

Which of the following factors accounts for most of the propulsion needed for a sperm to meet up with an egg

Preformationism was the belief that an entire human being, perfectly formed but far smaller could almost be seen within the confines of the sperm cell.  Which aspect of development is most ignored or minimized

Which of the following body systems are not significantly integrated into the process of sexual reproduction

In order for an asexually reproducing organism to evolve the ability to reproduce sexually, what attribute(s) would need to be acquired by mutation and selection

In the case of incomplete dominance, the combinations of alleles AA, Aa or aa can result in how many different phenotypes?

In the phenotype of an individual, a dominant allele

During meiosis I, both the two homologous chromosome pairs and the pairs of Mendelian alleles

In the cross between individuals having genotypes Aa and aa, how many kinds of offspring can emerge from this cross?

In a dihybrid cross the breeder is studying two _______ at a time.

In the karyotype of Drosophila melanogaster and most other organisms as well, the pairs of chromosomes not involved in determining the sex of the organism are called

In Mendel’s approach to plant breeding he was a(n) ___________; this term indicates that his questions were answered by good observations and experiments.

When male and female flies are crossed to each other, the X chromosome that is in half of the male fly’s sex cells (sperm)

During the formation of an individual’s sex cells, pairs of alleles come apart. This principle is

Which of the following choices would best describe the phenotype of a Bb individual?

If two genes are linked they will

Which of the following choices would best describe the genotype of a Bb individual?

Mendel’s experimental approach to plant breeding resulted in

In epistasis, the phenotype produced by the alleles of one gene locus

In sex cell formation, Mendel’s second law (independent assortment) works because

In a cross between individuals of genotype TtYy and ttyy, sex cells from the ttyy individual will all have t and y alleles. So they will reveal whatever alleles are present in any sex cell coming from the other parent—whether TY, tY, Ty or ty. So, how many different phenotypes can result from this cross? (TtYy X ttyy)

A bb individual is ___________ for a __________ allele.

Mendel’s view of plant breeding that resulted in the discovery of his laws could best be described by the principle

In the phenomenon of co-dominance in blood types, two or more different alleles are ___________ while another allele is ____________ because it is not expressed at all.

The karyotype of Drosophila melanogaster contains 4 pairs of homologous ___________.

In pea plants, the allele controlling tallness (T) is completely dominant over its alternative allele controlling shortness (t). Which of the following crosses will yield short (tt) and heterozygous tall (Tt) pea plants in approximately equal numbers?

Mendel’s approach to plant breeding resulted in the discovery of his laws because he

When two individuals, both with genotype RrYy are crossed to each other, all possible genotypic combinations are produced in the offspring: RRYY, RRYy, RRyy, RrYY, RrYy, Rryy, rrYY, rrYy and rryy. Score each genotype’s phenotype to determine how many visible kinds of offspring--phenotypes—do these 9 genotypes represent?

Genes that are on opposite ends of the same long chromosome will probably

The appearance of a trait is referred to as its

Question 1 The reproductive system uses the hormones ________ and (later on) ____________ to “think ahead”. They guide the preparation of the uterus for its role in supporting pregnancy.

Question 2 The portion of meiosis in which the total number of chromosomes is reduced to half is called the reduction division. Which stage below brings this about?

Question 3 One major advantage of sexual reproduction over asexual reproduction is that in sexual reproduction

Question 4 Early in your own development, a subset of diploid cells called ____________ began to develop within your pre­ectodermal tissue. These cells will eventually lodge in the gonadal ridge. Still later they will go through meiosis and give rise to primary oocytes or primary spermatocytes.

Question 5 How does a Venus fly trap close? Once expansin has weakened the cellulose in the walls of the leaf trap cells,

Question 6 In the Venus Fly trap, how does the enzyme expansin help to close the trap?

Question 7 For about half of a woman’s monthly cycle, the hormone ________ leaves the pituitary gland and, at the ovary, signals it to bring a more advanced _________ to complete maturity.

Question 8 Which of the following is an example of asexual reproduction in plants?

Question 9 Based on Plato’s analysis, the problem with defining the term “person” arises when you equate personhood with

Question 10 Which of the following methods by which human conception can be postponed is least invasive of the complexity of human physiology?

Question 11 Dilation of the cervix is a chemical procedure that

Question 12 The human nervous system responds to daily alterations in light and darkness by

Question 13 In the human life cycle, diploid cells undergo a cell division process called __________. The resulting haploid cells later fuse during ___________ which regenerates diploid cells.

Question 14 In the lactose operon of E.coli, how does the repressor protein change its shape?

Question 15 In the human body, melatonin supplementation is thought to help overcome the effects of

Question 16 Which of the following are involved in the control of sperm cell production?

Question 17 When the lactose operon is functioning

Question 18 In a normal person, the effect of elevated leptin levels in the bloodstream is

Question 19 The mature egg, once ruptured from its follicle is swept into the _____________ by fingerlike fringes called __________.

Question 20 The quintessential (most basic/ most important) moment of fertilization of the egg by the sperm cell occurs when

Question 21 A mature follicle has formed which of the following structures?

Question 22 A reproductive cell must differ from other normal body cells. The reproductive cell must ______________ because it will soon fuse with another reproductive cell to form a new individual.

Question 23 The stages of meiosis are

Question 24 The specialized process that halves the number of chromosomes during sex cell formation is named

Question 25 After a fly trips the sensory hair on the modified leaf of a Venus fly trap, what is the very next step in the closing process?

Question 1 When there is little or no lactose present in a bacterium’s environment then:

Question 2 An “allele” is

Question 3 The specialized process that halves the number of chromosomes during sex cell formation is named

Question 4 Haploid secondary spermatocytes go on directly to complete meiosis forming four spermatid cells. These will differentiate into sperm cells. The last stage of meiosis (that generates the spermatids) is called

Question 5 The following is a list of methods by which human conception can be postponed. Which one blocks sperm on its journey from the testicles to the fallopian tubes?

Question 6 The human nervous system responds to daily alterations in light and darkness by

Question 7 A living thing need to be responsive because

Question 8 The phrase, “two homologous sets of genes” means

Question 9 When an environmental change shifts an organism’s internal chemistry toward a new state, the organism’s response is to try to return its chemistry toward the original state. This tendency on the organism’s part is called

Question 10 Which order of types of cells below correctly reflects the sequence by which a sperm cell is produced?

Question 11 Which of the following are involved in the control of sperm cell production?

Question 12 After a fly trips the sensory hair on the modified leaf of a Venus fly trap, what is the very next step in the closing process?

Question 13 The stages of meiosis are

Question 14 How does a Venus fly trap close? Once expansin has weakened the cellulose in the walls of the leaf trap cells,

Question 15 An optimal site from which the hormone leptin should originate:

Question 16 One major advantage of sexual reproduction over asexual reproduction is that in sexual reproduction

Question 17 The sequence of events in how a Venus fly trap closes is:

Question 18 One effect of melatonin on the suprachiasmatic nuclei is that it

Question 19 Aristotle, the “Father of Biology”, believed that a human being became a person

Question 20 In the human body, decreasing melatonin levels

Question 21 Which of the following different methods by which human conception can be postponed involves altering the hormonal chemistry of the female partner?

Question 22 Normally a fertilized egg ends its journey temporarily by implanting within the wall of the _____________.

Question 23 The suprachiasmatic nuclei enable the nervous system to respond to daily light/dark alterations through their stimulation of

Question 24 The reproductive system uses the hormones ________ and (later on) ____________ to “think ahead”. They guide the preparation of the uterus for its role in supporting pregnancy.

Question 25 A hormone that controls a person’s appetite might bind to which of the following sites?

Question 1 Haploid secondary spermatocytes go on directly to complete meiosis forming four spermatid cells. These will differentiate into sperm cells. The last stage of meiosis (that generates the spermatids) is called

Question 2 A living thing need to be responsive because

Question 3 One effect of melatonin on the suprachiasmatic nuclei is that it

Question 4 The reproductive system uses the hormones ________ and (later on) ____________ to “think ahead”. They guide the preparation of the uterus for its role in supporting pregnancy.

Question 5 Dilation of the cervix is a chemical procedure that

Question 6 The suprachiasmatic nuclei enable the nervous system to respond to daily light/dark alterations through their stimulation of

Question 7 Aristotle, the “Father of Biology”, believed that a human being became a person

Question 8 When there is little or no lactose present in a bacterium’s environment then:

Question 9 If a bog plant designed to catch insects proves unable to do so, the result will be

Question 10 In the lactose operon of E.coli, how does the repressor protein change its shape?

Question 11 The human nervous system responds to daily alterations in light and darkness by

Question 12 In the human body, melatonin supplementation is thought to help overcome the effects of

Question 13 Which of the following are involved in the control of sperm cell production?

Question 14 A reproductive cell must differ from other normal body cells. The reproductive cell must ______________ because it will soon fuse with another reproductive cell to form a new individual.

Question 15 Based on Plato’s analysis, the problem with defining the term “person” arises when you equate personhood with

Question 16 Homeostasis can be described as:

Question 17 For about half of a woman’s monthly cycle, the hormone ________ leaves the pituitary gland and, at the ovary, signals it to bring a more advanced _________ to complete maturity.

Question 18 Which of the following different methods by which human conception can be postponed involves altering the hormonal chemistry of the female partner?

Question 19 Early in your own development, a subset of diploid cells called ____________ began to develop within your pre­ectodermal tissue. These cells will eventually lodge in the gonadal ridge. Still later they will go through meiosis and give rise to primary oocytes or primary spermatocytes.

Question 20 A hormone that controls a person’s appetite might bind to which of the following sites?

Question 21 When the lactose operon is functioning

Question 22 After a fly trips the sensory hair on the modified leaf of a Venus fly trap, what is the very next step in the closing process?

Question 23 One disadvantage of sexual reproduction is

Question 24 A mature follicle has formed which of the following structures?

Question 25 In the Venus Fly trap, how does the enzyme expansin help to close the trap?