Failed quiz questions: 6,7,12,4,18,19,22,8 Flashcards
Cytokinesis (cytoplasmic division) in animal cells
- begins with the deposition of a very rigid lipid bilayer, which is the major constituent of the cell wall
- all of these
- occurs when the plasma membrane is pulled inward by a ring of microtubules that has become attached to the cell plate
- begins with various deposits of material associated with vesicles and with groups of microtubules at each pole of the nucleus
- usually follows nuclear division
- usually follows nuclear division
Crossing over usually occurs in which of the following stages of meiosis?
prophase I
telophase II
anaphase II
metaphase I
interphase
Prophase I
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-
–phosphate–sugar–phosphate–sugar–phosphate–sugar
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
All of these
In mitosis, the centrioles move to opposite poles of the cell during prophase.
True
False
True
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
Sister chromatids of each chromosome are separated from each other.
The DNA segment that carries information coding for a particular amino acid is a:
gene
triplet
nucleotide
deoxyribose sugar
phosphate group
triplet
The sister chromatids become separated during what phase of meiosis?
metaphase I
telophase I
anaphase I
anaphase II
prophase II
Anaphase II
Cri-du-chat is caused by a/an
inversion
translocation
duplication
autosomal dominant
deletion
deletion
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
All of his daughters
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
One dominant allele, one recessive allele
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.
Both heterozygous
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
can have different blood types, but neither can be blood type O
An X-linked carrier is a
homozygous dominant female
homozygous male
heterozygous male
heterozygous female
homozygous recessive female
heterozygous female
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%
50%
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
Both Bb
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
sex-influenced trait
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.
they are lethal during fetal development
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
Both of the alleles in a heterozygote are expressed phenotypically in an individual
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
breasts
Endocrine Mod:
The adrenal medulla produces:
aldosterone
testosterone
epinephrine
cortisol
epinephrine
Endocrine Mod:
The body’s major metabolic hormone is called:
calcitonin
adrenaline
thyroid hormone
growth hormone
prolactin
thyroid hormone
Which gland releases FSH and LH?
Anterior pituitary
Which hormone controls the release of FSH and LH from anterior pituitary?
Gonadotropin hormone (GnRH) from the hypothalamus
Endocrine Mod:
Alcohol inhibits the secretion of:
prolactin (PRL)
oxytocin
parathyroid hormone (PTH)
glucagon
antidiuretic hormone (ADH)
antidiuretic hormone (ADH)
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
False
Endocrine Mod:
Which of these hormones is NOT regulated by a hormone from the anterior pituitary gland?
testosterone
cortisol
thyroxine
epinephrine
epinephrine
Endocrine Mod:
Which hormone decreases blood glucose concentrations?
Cortisol
Growth hormone
Glucagon
Insulin
Insulin
Digestive Mod:
The opening of the large intestine is called the:
ileum
rectum
cecum
anus
sigmoid colon
Anus
Digestive Mod:
Secretion of enzyme pancreatic juice is stimulated by the hormone:
cholecystokinin
norepinephrine
epinephrine
secretin
cholecystokinin
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
amylase/lipase/trypsin
Digestive Mod:
The end products of carbohydrate digestion are amino acids.
True
Or
False
False
Digestive Mod:
The anal canal has a voluntary sphincter formed by smooth muscle only.
True
OR
False
False
Digestive Mod: Proteins are digested to their building blocks which are called:
peptides
fatty acids
glycerol
amino acids
polypeptides
amino acids
Digestive Mod:
Organ that Produces Bile:
Liver.
It is then stored an concentrated in gallbladder
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
sodium ions
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
carbohydrates - polysaccharides
Digestive mod:
Someone with liver failure will, in particular, have problems with the digestion and absorption of ______.
fats
proteins
minerals
carbohydrates
fats
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
cortical radiate veins, arcuate veins, interlobar veins, renal vein
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
a weak acid and a salt
Exc Mod:
In tubular reabsorption, negative ions are reabsorbed by the process of passive transport
True
Or
False
True
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
filtrate to be excreted
Exc Mod:
In the kidney, the renal pelvis empties urine into the urinary bladder.
True
OR
False
False
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.
Useful materials are reabsorbed directly into the renal vein.
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
Bowman’s capsule
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
amino acids
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.
All of the above
Exc Mod:
The energy for the process of filtration is provided by:
active transport
diffusion
ATP
blood pressure
blood pressure
Exc Mod:
The part of the CNS that is directly involved in the urination reflex is the:
hypothalamus
cerebrum
spinal cord
medulla
spinal cord
Exc Mod:
The kidneys respond to increased acidity of body fluids by:
excreting sodium ions
excreting hydrogen ions
excreting potassium ions
retaining hydrogen ions
excreting hydrogen ions
Exc Mod:
Tubular reabsorption begins in the glomerulus.
True
OR
False
False
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.
All of the above
Rp mod:
For women, the hormone that promotes the release of an ovum from a mature follicle is:
estrogen
progesterone
FSH
LH
LH
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
False
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
initiate sperm production
Rp Mod:
For men, the hormone LH:
stimulates secretion of testosterone
increases protein synthesis in skeletal muscles
initiates sperm production
all of these
stimulates the secretion of testosterone
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
All of the above are true
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
prostate gland
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
Estrogen and LH concentrations
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.
The bulbourethral glands empty into the prostate gland.
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
membranous urethra
Rp Mod:
The sertoli cells of the testes produce testosterone.
True
Or
False
false
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
production of mature ova
