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WorksheetsExam 4
Total questions: 47
Worksheet time: 24mins
Which of the following is the primary function of red blood cells?
Fighting infection in the body
Helping create blood clots
Carrying oxygen to other body cells
Responding to antigens
Which of the following substances is excreted by sweat glands in response to the breakdown of proteins and the formation of ammonia?
Sebum
Lysozymes
Urea
Water
Which of the following number of electrons are found in a boron atom with an atomic number of 5 and a mass number of 11?
11
6
5
16
S and O are in the same periodic group and share chemical properties, but H¿S is a gas at room temperature, and HO is a liquid. Which of the following is the main reason for this?
H2O has stronger intermolecular bonds than H2S.
H2S has stronger intermolecular bonds than H2O.
H2S has stronger ionic bonds than H2O.
H2O has stronger ionic bonds than H2S.
Which of the following glands produces an oily substance that lubricates the hair and skin?
Sebaceous
Apocrine
Sudoriferous
Eccrine
Which of the following describes a direct effect of histamine on blood vessels?
Causes blood vessels to constrict
Decreases the amount of smooth muscle in blood vessels
Increases the amount of smooth muscle in blood vessels
Causes blood vesseis to dilate
Which of the following is correct regarding the pH scale?
A substance with a pH of 3 is 10 times more acidic than a substance with a pH of 4.
A substance with a pH of 3 is two times more alkaline than a substance with a pH of 4.
A substance with a pH of 3 is 10 times more alkaline than a substance with a pH of 4.
A substance with a pH of 3 is two times more acidic than a substance with a pH of 4.
A physicist claims to have developed friction-free tires for cars. Which of the following problems would result from using these tires?
The tread on the tires will wear down quickly.
The tires will not stay attached to the car.
The tires will not be able to roll or stop.
The tires will levitate off the road surface.
Nucleotides that contain the sugar ribose are found in which of the following?
ATP.
RNA.
DNA.
GMP.
Which of the following is the first step a researcher should take before experimentation begins?
Apply the units of the Si system.
Generate a hypothesis.
Select laboratory equipment.
Design experimental procedures.
Endemic goiter is caused by hypertrophy of the thyroid due to a lack of iodine in the diet. Which of the following is a related physical symptom that could be observed in patients?
Increased frequency of bone fractures
Enlarged hands and feet
Swelling of the neck
Fat deposition leading to a rounded face
The valence of atoms in a group (column) in the periodic table
decreases from top to bottom.
increases from top to bottom.
changes unpredictably
remains unchanged.
Which of the following digestive system structures releases sodium bicarbonate into the small intestine, resulting in a change in the pH of chyme from acidic to basic?
Liver
Pancreas
Appendix
Gallbladder
The perineum describes which of the following triangular areas of the human body?
The area between the edges of the eyes and the chin.
The area on the back between the neck and the two shoulder blades.
The area between the nipples on the chest and the belly button.
The area that contains the orifices of the urinary, digestive, and reproductive systems.
Which of the following substances in the blood increases when parathyroid hormone is released?
Iron
Calcium
Potassium
Sodium
Which of the following is an example of a cell differentiating?
A stem cell maturing to become a muscle cell that can contract
A muscle cell producing more ATP to meet the energy demands of exercising
A pancreatic cell producing and releasing a hormone into the blood
Pepsin, which speeds up the breakdown of proteins, is classified as
an enzyme.
a lipid
a nucleic acid
a carbohydrate.
A species of beetle is brown and lives only on brown trees. Sometimes, genetic mutation results in a few white beetles, but they are quickly eaten by birds. If all the trees in the forest were painted white, which of the following would be the most likely outcome?
Brown beetles would become extinct from the population.
The brown beetles would turn white.
The population of white beetles would increase.
The brown beetles would lay more white beetle eggs.
Which of the following is the function of the nephron glomerulus?
Allows K+. Na+ and Cl-to move out of the filtrate through both active and passive transport
Responds to presence of ADH to control water reabsorption and produce a concentrated urine
Reabsorbs water into the blood that increases blood pressure
Produces a filtrate that is then processed by the renal tubule
Which of the following is an example of the adhesive property of water?
Raindrops stick to the outside of a window.
Water and oil separate into two distinct layers.
Small water droplets cling together to make one large water droplet.
Water molecules support the weight of a small insect.
Which of the following lists the order of tissues in the gastrointestinal tract, from the innermost layer to the outermost layer?
Mucosa, submucosa, muscularis, serosa
Serosa, mucosa, submucosa, muscularis
Submucosa, mucosa, serosa, muscularis
Muscularis, serosa, mucosa, submucosa
Which of the following hormones is responsible for regulating sodium reabsorption in the kidneys?
Erythropoietin
Aldosterone
Thyroxine
Calcitriol
A student is comparing four different types of cells and observes that one contains many more mitochondria than the others. Which of the following conclusions should the student make?
The cells are muscle cells.
The celis are epidermal cells.
The cells are sebaceous gland cells.
The cells are fat cells.
Parasitic worm infestation is hypothesized to be damaging to the host. However, scientists have recently discovered that worm infestation can relieve the effects of certain autoimmune disorders. In which of the following ways should the hypothesis be modified, given the new findings?
Worm infestation prevents the body from immune malfunction.
Worm infestation reduces the severity of certain autoimmune disorders.
Worm infestations exacerbate the body's immune reactions.
Lack of worm infestations is the cause of some autoimmune disorders.
Which of the following tools is used to measure pressure?
Cannula
Manometer
Otoscope
Stethoscope
Which of the following statements describes changes in the tubes that conduct air from the primary bronchi toward the bronchioles in the lungs?
Epithelial layer gets thinner.
Tube diameter increases.
Cilia become more plentiful.
Cartilage rings become larger.
Which of these pathogens is typically transmitted by biting fleas carried by infected rats?
Neisseria meningitidis
Yersinia pestis
Plasmodium falciparum
Corynebacterium diphtheriae
Which of the following is generally expected to be true about birth rates in relation to death rates for a country with a growing population and high infant mortality?
Birth rates equal to death rates
Birth rates variable compared to death rates
Birth rates lower than death rates
Higher birth rates than death rates
Which of the following is true regarding the structure of atoms?
The amount of charge on a proton is greater than the amount of charge on an electron.
The neutrons make up a significant part of the atomic mass.
The mass of each electron is the same as the mass of each proton.
Isotopes of an element differ in the number of protons in the nucleus.
Which of the following describes how the carbonic acid bicarbonate blood buffer system responds when an alkaline substance enters the blood stream?
Hydrogen ions (H*) ions released from carbonic acid neutralizes hydroxide ions (OH) to resist change in blood pH.
Hydrogen ions (H*) ions released from carbonic acid neutralizes hydroxide ions (OH) to raise blood pH.
Hydroxide ions (OH) released from bicarbonate ions (HCO;) neutralizes hydrogen ions (H*) to resist change in blood pH.
Hydroxide ions (OH) released from bicarbonate ions (HCO,") neutralizes hydrogen ions (H*) to raise blood pH.
Which of the following can digest an enzyme?
Proteases
Endonucleases
Lipases
Kinases
The basal body is a structure associated with which of the following parts of a cell?
Flagella
Nucleus
Mitochondria
Ribosome
Which of the following organelles is enriched in skeletal muscle cells?
Centrioles
Golgi bodies
Mitochondria
Lysosomes
During cell division, spindle fibers attach to which of the following chromosomal structures?
Nucleosome
Gene
Histone
Centromere
Which of the following is the physiological function of Dermcidin and cathelicidin?
Chemical messengers
Digestive enzymes
Neurotransmitters
Antimicrobial peptides
While playing basketball, a player injures her Achilles tendon. Which of the following types of tissue was injured?
Connective
Muscle
Nervous
Epithelial
Which of the following structures is responsible for storing and releasing calcium ions that control the contraction-relaxation cycle of skeletal muscle?
Troponin complex
Cellular cytoskeleton
Myosin filaments
Sarcoplasmic reticulum
Achrondroplasia, a form of dwarfism, is an autosomal dominant disorder. Homozygous achrondroplasia is fatal within the first year of life. Which of the following is the genotype of an adult who has achrondroplasia?
Aa
AA
aa
XAY
Which of the following units should be used to measure the volume of a blood sample?
Centimeters
Millimeters
Milligrams
Milliliters
A scientist wants to determine if solutes from a new drug formulation, taken orally, all enter the bloodstream. Which of the following samples would best show if this is the case?
Bone marrow
Lymph
White blood cells
Plasma
Which of the following describes the nodes of Ranvier?
Sodium gates at the axon terminals of a neuron
Gaps between Schwann cells wrapping the axon of a neuron
Spaces between post and presynaptic neurons
Degraded myelin surrounding the axon of a neuron
Which of the following processes causes most of the carbon dioxide from the blood to move into the alveoli?
Conversion to carbon monoxide
Diffusion down a concentration gradient
Active transport using energy
Passive transport using carrier proteins
Which of the following structures is severed and tied off as part of a vasectomy procedure?
Vas deferens
Seminal vesicle
Testes
Epididymis
Which of the following is a function of the integumentary system?
Production of antibodies
Storage of fat
Absorption of water
Release of minerals
Which of the following components of a nucleotide determines whether the nucleotide is considered a pyrimidine or purine?
Deoxyribose sugar
Phosphate
Ribose sugar
Nitrogen base
Which of the following meiosis events produce genetically different daughter cells?
Condensation of chromosomes during prophase
Crossing over of homologous chromosomes
Dissolution of nuclear membrane
Separation of sister chromatids
In which of the following states will carbon dioxide occupy the least volume?
Solid
Plasma
Gas
Liquid
