Failed quiz questions: 6,7,12,4,18,19,22,8

Question 1

Cytokinesis (cytoplasmic division) in animal cells

1. begins with the deposition of a very rigid lipid bilayer, which is the major constituent of the cell wall
2. all of these
3. occurs when the plasma membrane is pulled inward by a ring of microtubules that has become attached to the cell plate
4. begins with various deposits of material associated with vesicles and with groups of microtubules at each pole of the nucleus
5. usually follows nuclear division

Answer 1

5. usually follows nuclear division

Question 2

Crossing over usually occurs in which of the following stages of meiosis?
prophase I
telophase II
anaphase II
metaphase I
interphase

Answer 2

Prophase I

Question 3

The sequence of subunits in the DNA “backbone” is:
–sugar–base–sugar–base–sugar–base–sugar–base-

–base–sugar–phosphate–base–sugar–phosphate-

–phosphate–sugar–phosphate–sugar–phosphate–sugar

–base–phosphate–base–phosphate–base–phosphate-

Answer 3

–phosphate–sugar–phosphate–sugar–phosphate–sugar

Question 4

James Watson and Francis Crick

established the principle of base pairing

established the double-stranded nature of DNA

all of these

explained how DNA’s structure permitted it to be replicated

proposed the concept of the double-helix

Answer 4

All of these

Question 5

In mitosis, the centrioles move to opposite poles of the cell during prophase.

True

False

Answer 5

True

Question 6

During meiosis II

Cytokinesis results in the formation of a total of two cells.

Homologous chromosomes separate.

Sister chromatids of each chromosome are separated from each other.

Sister chromatids exchange parts.

Homologous chromosomes pair up

Answer 6

Sister chromatids of each chromosome are separated from each other.

Question 7

The DNA segment that carries information coding for a particular amino acid is a:

gene
triplet
nucleotide
deoxyribose sugar
phosphate group

Answer 7

triplet

Question 8

The sister chromatids become separated during what phase of meiosis?
metaphase I
telophase I
anaphase I
anaphase II
prophase II

Answer 8

Anaphase II

Question 9

Cri-du-chat is caused by a/an
inversion
translocation
duplication
autosomal dominant
deletion

Answer 9

deletion

Question 10

A man who carries a harmful sex-linked (on the X chromosome) gene will pass the gene on to:
All of his sons
Half of his daughters
All of his daughters
Half of his sons
All of his children

Answer 10

All of his daughters

Question 11

A couple has a daughter who is color-blind. The mother is not color-blind, but the father is. What is the genotype of the mother for this trait?
two dominant alleles
one abnormal Y chromosome, one normal X chromosome
two recessive alleles
three dominant alleles
one dominant allele, one recessive allele

Answer 11

One dominant allele, one recessive allele

Question 12

If flower color of the offspring was 25% white and 75% red, and flower color were inherited by complete dominance, the parents genotypes must be
one homozygous recessive, the other heterozygous.
all red.
both homozygous dominant.
both heterozygous.
one homozygous dominant, the other heterozygous.

Answer 12

Both heterozygous

Question 13

If a child has an AB blood type, the parents:

can have different blood types, but neither can be blood type O
must be A and B, but not AB
can be any blood type
must both have different blood types
must both be AB

Answer 13

can have different blood types, but neither can be blood type O

Question 14

An X-linked carrier is a

homozygous dominant female
homozygous male
heterozygous male
heterozygous female
homozygous recessive female

Answer 14

heterozygous female

Question 15

Cystic fibrosis is a genetic disorder that results from the inheritance of two recessive alleles. What is the chance that a child will inherit the disorder if one parent is heterozygous for this gene and one parent has cystic fibrosis?

25%
50%
0%
100%
75%

Answer 15

50%

Question 16

Two brown dogs mated. Their offspring were five brown puppies and two white puppies. The most probable genotypes of the two brown dogs are

both Bb
both BB
Bb and bb
BB and Bb
BB and bb

Answer 16

Both Bb

Question 17

Identify the mode of inheritance for each of the following traits: baldness

incomplete dominance
codominance
inheritance of a dominant-lethal allele
sex-influenced trait
X-linked inheritance
polygenic inheritance

Answer 17

sex-influenced trait

Question 18

Alterations in chromosome number can occur with any chromosome, but most alterations are not seen in human populations because:

the genotype still represents a normal condition.

they are lethal during fetal development.

the phenotype is expressed in a continuous range in a given population and thus does not stand out.

the phenotype of homozygous recessive.

most are corrected during the first mitotic event in the fertilized egg.

Answer 18

they are lethal during fetal development

Question 19

Codominance occurs when:

Offspring exhibit several different phenotypic expressions of a single trait

Expression of 2 different alleles alternates from one generation to the next

Both of the alleles in a heterozygote are expressed phenotypically in an individual

A heterozygote expresses an intermediate phenotype

Answer 19

Both of the alleles in a heterozygote are expressed phenotypically in an individual

Question 20

Endocrine Module:

Match each of the following hormones to its target organ.
prolactin

stomach
muscles and bones
breasts
adrenal cortex
thyroid
ovary, testis
anterior pituitary
kidney

Answer 20

breasts

Question 21

Endocrine Mod:

The adrenal medulla produces:

aldosterone
testosterone
epinephrine
cortisol

Answer 21

epinephrine

Question 22

Endocrine Mod:

The body’s major metabolic hormone is called:
calcitonin
adrenaline
thyroid hormone
growth hormone
prolactin

Answer 22

thyroid hormone

Question 23

Which gland releases FSH and LH?

Answer 23

Anterior pituitary

Question 24

Which hormone controls the release of FSH and LH from anterior pituitary?

Answer 24

Gonadotropin hormone (GnRH) from the hypothalamus

Question 25

Endocrine Mod: Alcohol inhibits the secretion of: prolactin (PRL) oxytocin parathyroid hormone (PTH) glucagon antidiuretic hormone (ADH)

Answer 25

antidiuretic hormone (ADH)

Question 26

Endocrine Mod: The alpha, beta, and delta cells located in the islets of Langerhans of the thyroid produce three different hormones that are important in the regulation of sodium and potassium levels of the blood. True or False

Answer 26

False

Question 27

Endocrine Mod: Which of these hormones is NOT regulated by a hormone from the anterior pituitary gland? testosterone cortisol thyroxine epinephrine

Answer 27

epinephrine

Question 28

Endocrine Mod: Which hormone decreases blood glucose concentrations? Cortisol Growth hormone Glucagon Insulin

Answer 28

Insulin

Question 29

Digestive Mod: The opening of the large intestine is called the: ileum rectum cecum anus sigmoid colon

Answer 29

Anus

Question 30

Digestive Mod: Secretion of enzyme pancreatic juice is stimulated by the hormone: cholecystokinin norepinephrine epinephrine secretin

Answer 30

cholecystokinin

Question 31

Digestive Mod: Pancreatic digestive enzymes include ___ for starch, ___ for fats, and ___ for protein. sucrase/lipase/trypsin amylase/adipolase/pepsin sucrase/lipase/pepsin amylase/lipase/trypsin

Answer 31

amylase/lipase/trypsin

Question 32

Digestive Mod: The end products of carbohydrate digestion are amino acids. True Or False

Answer 32

False

Question 33

Digestive Mod: The anal canal has a voluntary sphincter formed by smooth muscle only. True OR False

Answer 33

False

Question 34

Digestive Mod: Proteins are digested to their building blocks which are called: peptides fatty acids glycerol amino acids polypeptides

Answer 34

amino acids

Question 35

Digestive Mod: Organ that Produces Bile:

Answer 35

Liver. It is then stored an concentrated in gallbladder

Question 36

Digestive Mod: Which of these end products of digestion is NOT absorbed by the lacteals in the villi? sodium ions vitamin A vitamin E fatty acids and glycerol

Answer 36

sodium ions

Question 37

Digestive Mod: Which food is NOT paired with the proper end products of digestion? fats - fatty acids and glycerol proteins - amino acids All of these pairs are correct. carbohydrates - polysaccharides

Answer 37

carbohydrates - polysaccharides

Question 38

Digestive mod: Someone with liver failure will, in particular, have problems with the digestion and absorption of ______. fats proteins minerals carbohydrates

Answer 38

fats

Question 39

Excretory Mod: As venous blood is drained from the kidney, which path does it follow: renal vein, interlobar veins, segmental veins, arcuate veins renal vein, segmental veins, interlobar veins, arcuate veins, cortical radiate veins arcuate veins, cortical radiate veins, interlobar veins, renal vein cortical radiate veins, arcuate veins, interlobar veins, renal vein cortical radiate veins, arcuate veins, interlobar veins, segmental veins, renal vein

Answer 39

cortical radiate veins, arcuate veins, interlobar veins, renal vein

Question 40

Exc Mod: The bicarbonate buffer system will buffer a strong acid by forming: a weak base and water a weak acid and a salt a weak acid and water a weak base and a salt

Answer 40

a weak acid and a salt

Question 41

Exc Mod: In tubular reabsorption, negative ions are reabsorbed by the process of passive transport True Or False

Answer 41

True

Question 42

Exc Mod: KNOW THIS ONE!!!! In the kidneys, the process of tubular secretion enables the tubules to put substances into the: filtrate to be retained in the body blood to be excreted blood to be retained in the body filtrate to be excreted

Answer 42

filtrate to be excreted

Question 43

Exc Mod: In the kidney, the renal pelvis empties urine into the urinary bladder. True OR False

Answer 43

False

Question 44

Exc Mod: Which statement is NOT true of the blood vessels of the kidneys? Useful materials are reabsorbed directly into the renal vein. A glomerulus is surrounded by a Bowman's capsule that receives renal filtrate. The peritubular capillaries surround all parts of the renal tubule. The renal artery is a branch of the abdominal aorta.

Answer 44

Useful materials are reabsorbed directly into the renal vein.

Question 45

Exc Mod: As urine moves through a nephron, it is modified by ions, water and other materials either being secreted into the fluid or by efflux of substances out of the urine. However, such modifications do not occur in this region of the nephron. distal tubule loop of Henle Bowman’s capsule proximal tubule collecting duct

Answer 45

Bowman's capsule

Question 46

Exc Mod: The urea in urine comes from the metabolism of: both A and B both A and B, and ketone acids nucleic acids amino acids

Answer 46

amino acids

Question 47

Exc Mod: Which statement is true of nephrons? They make up the renal cortex and renal medulla. They are the functional units of the kidneys. All of the above They are the structural units of the kidneys.

Answer 47

All of the above

Question 48

Exc Mod: The energy for the process of filtration is provided by: active transport diffusion ATP blood pressure

Answer 48

blood pressure

Question 49

Exc Mod: The part of the CNS that is directly involved in the urination reflex is the: hypothalamus cerebrum spinal cord medulla

Answer 49

spinal cord

Question 50

Exc Mod: The kidneys respond to increased acidity of body fluids by: excreting sodium ions excreting hydrogen ions excreting potassium ions retaining hydrogen ions

Answer 50

excreting hydrogen ions

Question 51

Exc Mod: Tubular reabsorption begins in the glomerulus. True OR False

Answer 51

False

Question 52

Rp Mod: Which statement is true of spermatogenesis? All of the above The process is continuous from day to day. Four functional sperm are produced for each cell that undergoes meiosis. The process takes place in the testes.

Answer 52

All of the above

Question 53

Rp mod: For women, the hormone that promotes the release of an ovum from a mature follicle is: estrogen progesterone FSH LH

Answer 53

LH

Question 54

Rp Mod: Prostatic cancer is the common reason men consult a urologist because it is the leading type of cancer in adult men. True Or False

Answer 54

False

Question 55

Rp Mod: For men, the function of FSH is to: initiate sperm production stimulate secretion of testosterone neither A nor B both A and B

Answer 55

initiate sperm production

Question 56

Rp Mod: For men, the hormone LH: stimulates secretion of testosterone increases protein synthesis in skeletal muscles initiates sperm production all of these

Answer 56

stimulates the secretion of testosterone

Question 57

Rp Mod: Contraceptive methods that rely on synthetic hormones Both a and b Prevent ovulation Prevent the implantation of a fertilized egg in the uterus Prevent the sperm and egg from meeting All of the above are true

Answer 57

All of the above are true

Question 58

Rp Mod: The male reproductive gland(s) that is above penis and contributes to ejaculation is (are) the: prostate gland bulbourethral glands seminal vesicles all of these

Answer 58

prostate gland

Question 59

Rp Mod: Ovulation is produced due to a surge in Estrogen and FSH concentrations LH and FSH concentrations Estrogen and LH concentrations Estrogen concentrations LH concentrations

Answer 59

Estrogen and LH concentrations

Question 60

RP Mod: Which statement is NOT true of the male reproductive glands? All of them produce alkaline secretions. The bulbourethral glands empty into the prostate gland. The prostate gland contributes to ejaculation. The secretion of the seminal vesicles contains fructose.

Answer 60

The bulbourethral glands empty into the prostate gland.

Question 61

Rp Mod: The middle part of the male urethra that extends from the prostate to the penis is called the: membranous urethra prostatic urethra penile urethra spongy urethra bulbourethra

Answer 61

membranous urethra

Question 62

Rp Mod: The sertoli cells of the testes produce testosterone. True Or False

Answer 62

false

Question 63

RP Mod: For women, the hormones estrogen and FSH are both necessary for the: neither A nor B both A and B production of mature ova growth of the endometrium

Answer 63

production of mature ova