bio 100

True or False:
In animals cells, cytoplasmic division is done by furrowing.
True False

True or False:
Nuclear membrane begins to break down in prophase.
True False

Chromosomes are at their maximum condensation in telophase.
True False

Random alignment of the homologous chromosomes happens at metaphase I.
True False

There are two nuclear divisions in mitosis and one nuclear division in meiosis.
True False

Mitosis and cytokinesis give rise to two clones (genetically identical cells).
True False

A human primary oocyte can give rise to only one viable egg.
True False

Sister-chromatids are lined up at the equator of the spindle at:

A) metaphase stage of mitosis
B) telophase stage of mitosis
C) anaphase stage of mitosis
D) prophase stage of mitosis

Chromosomes are duplicated in:

A) the G2 stage of interphase
B) the G1 stage of interphase
C) the S stage of interphase
D) prophase

Crossing over

A) takes place during prophase I stage of meiosis
B) happens between the nonsister chromatids
C) produces variety in the genetic make up of the gametes
D) all of the above

True or False:
A homozygote has a pair of identical alleles whereas a heterozygote has a pair of nonidentical alleles.
True False

True or False:
Pink snapdragon is an example of co-dominance.
True False

True or False:
If a woman’s genotype at the ABO locus is IA i, her blood type is O.
True False

True or False:
Pleiotropy refers to traits which are resulted from multiple genes.
True False

In a paternity suit, a woman with type AB blood accuses a man with type O blood of fathering her child. The child has type AB blood. Could the man be the child’s father?

a) yes
b) no

The F2 phenotypic ratio of Mendel’s monohybrid cross is

A) 2:1
B) 1:2:1
C) 3:1
D) 1:1
E) 9:3:3:1

Gregor Mendel discovered:

A) tertiary structure of proteins
B) the theory of natural selection
C) chromosomes
D) the theory of independent assortment

Offsprings of a monohybrid cross AA* aa are

A) all AA
B) all aa
C) all Aa
D) 1/2 aa and 1/2 AA

The phenotype of an organism

A) is the observable traits of that organism
B) is affected by the environment
C) is affected by its genotype
D) all of the above

True or False:
Adipose tissue cells are filled with lipids.
True False

True or False:
Glial cells conduct nerve impulses while neurons support the glial cells.
True False

True or False:
Endocrine glands produce and release hormones.
True False

True or False:
In negative feedback, the stimuli are intensified several folds before homeostasis is resumed.
True False

True or False:
The walls of the stomach are lined with skeletal muscle tissue.
True False

True or False:
Collagen and elastin are typically found in connective tissue.
True False

True or False:
The function of simple squamous is diffusion.
True False

Match:
Striated and involuntary muscle

A. cardiac muscle
B. skeletal muscle
C. smooth muscle

Glands are derived from:

A) cartilaginous tissue
B) epithelial tissue
C) muscle tissue
D) connective tissue

____ is a specialized connective tissue that contains chondrocytes.

A) bone
B) cartilage
C) muscle
D) blood

Tendons and ligaments consist of:

A) bone
B) cartilage
C) loose connective tissue
D) dense connective tissue

A heat-sensitive neuron in your skin is an example of a:

A) integrator
B) sensory receptor
C) promotor
D) effector

True or False:
An XO woman is fertile.
True False

A hemophiliac woman marries a normal man. What are the chances of hemophilia occurring in their children?

A) 75%
B) 50%
C) 0%
D) 25%

Match the Terms with Their Most Suitable Descriptions:

____ hemophilia

A. individual has three of number 21
B. autosomal recessive disorder
C. individual has X0 genotype
D. Cri-du-chat
E. X-linked recessive disorder
F. autosomal dominant abnormality
G. individual has XXY genotype

Match the Terms with Their Most Suitable Descriptions:

____ Klinefelter syndrome

A. Cri-du-chat
B. individual has X0 genotype
C. individual has XXY genotype
D. X-linked recessive disorder
E. individual has three of number 21
F. autosomal dominant abnormality
G. autosomal recessive disorder

Match the Terms with Their Most Suitable Descriptions:

____ cystic fibrosis

A. individual has XXY genotype
B. Cri-du-chat
C. autosomal recessive disorder
D. individual has X0 genotype
E. individual has three of number 21
F. autosomal dominant abnormality
G. X-linked recessive disorder

Match the Terms with Their Most Suitable Descriptions:

____ deletion

A. individual has X0 genotype
B. Cri-du-chat
C. autosomal dominant abnormality
D. individual has three of number 21
E. individual has XXY genotype
F. X-linked recessive disorder
G. autosomal recessive disorder

Match the Terms with Their Most Suitable Descriptions:

____ Turner Syndrome

A. X-linked recessive disorder
B. individual has XXY genotype
C. Cri-du-chat
D. individual has three of number 21
E. autosomal recessive disorder
F. autosomal dominant abnormality
G. individual has X0 genotype

Match the Terms with Their Most Suitable Descriptions:

____ Down’s Syndrome

A. autosomal recessive disorder
B. individual has XXY genotype
C. X-linked recessive disorder
D. individual has X0 genotype
E. autosomal dominant abnormality
F. individual has three of number 21
G. Cri-du-chat

Which of the blood components below contains the oxygen-transporting protein hemoglobin?

A) platelets
B) white blood cells
C) red blood cells
D) plasma
E) all of the above

Respiration is controlled by sensors and effectors in the brain and carotid arteries that respond to a rise in _______ by _______ the rate of breathing.

A) CO2; increasing
B) CO2; decreasing
C) NO; decreasing
D) O2; decreasing
E) O2; increasing

Which ABO blood type is known as the universal donor?

A) A
B) B
C) O
D) AB

Which of the following is not a component of plasma

A) water
B) albumin
C) red blood cells
D) dissolved ions, sugars, hormones

Which of the following is NOT involved in the formation of a blood clot?

A) fibrin
B) albumin
C) thrombin
D) fibrinogen

Four of the five answers listed below are components of the human respiratory system. Select the exception.

A) alveoli
B) esophagus
C) bronchiole
D) trachea
E) diaphragm

What is the hormone that stimulates the bone marrow to produce more red blood cells?

A) erythropoietin
B) TSH(Thyroid Stimulating Hormone)
C) insulin
D) platelets

Excitation for a heartbeat is initiated in the:

A) sinoatrial (SA) node
B) atrioventicular(AV) node
C) semilunar valve
D) atrioventicular(AV) valve

True or False:
Plasma is the cellular portion of blood
True False

True or False:
Humans have open circulatory system
True False

True or False:
Frog’s heart is divided in the middle, therefore oxygenated blood stays separated from the deoxygenated blood
True False

True or FalseGas exchange takes place in alveoli.
True False

Match:

____ bradycardia

A. pumps blood to body
B. receives blood from body
C. a slower than normal heart rate
D. receives blood from lungs
E. pumps blood to lungs
F. a faster than normal heart rate

Match:

____ right atrium

A. pumps blood to body
B. a slower than normal heart rate
C. pumps blood to lungs
D. receives blood from body
E. a faster than normal heart rate
F. receives blood from lungs

Match:

____ left atrium

A. receives blood from body
B. receives blood from lungs
C. a faster than normal heart rate
D. a slower than normal heart rate
E. pumps blood to lungs
F. pumps blood to body

Match:

____ right ventricle

A. receives blood from lungs
B. a slower than normal heart rate
C. pumps blood to body
D. pumps blood to lungs
E. a faster than normal heart rate
F. receives blood from body

Match:

____ left ventricle

A. receives blood from body
B. pumps blood to lungs
C. receives blood from lungs
D. a slower than normal heart rate
E. pumps blood to body
F. a faster than normal heart rate

Match:

____ tachycardia

A. a slower than normal heart rate
B. pumps blood to body
C. receives blood from lungs
D. receives blood from body
E. a faster than normal heart rate
F. pumps blood to lungs