WITCC. Honorlock Version BIO173 Final Exam Part1

Question 1

WITCC. Honorlock Version BIO173 Final Exam Part1. A hyposecretion of parathyroid hormone (PTH) may lead to:

• hypercalcemia
• stimulation of osteoclast activity
• increased renal absorption of Ca++
• more absorption of Ca++ by the small intestine
• faster bone deposition ✅

Question 2

Adult-onset diabetes mellitus (Type II) results from:

• underproduction of insulin
• defective beta cells in the pancreas
• eating too many Twinkies
• insensitivity of cells to insulin ✅

Question 3

Amylase is to carbohydrate digestion as pepsin is to:

• duodenal digestion
• gastric digestion
• protein digestion ✅
• chemical digestion
• mechanical digestion

Question 4

Andrea is midway through the luteal phase of her ovarian menstrual cycle. If she wishes to get pregnant:

• fertilization must occur before the FSH secretion begins
• the sperm should be delivered at the beginning of her menses
• she must wait until her next cycle
• the sperm should be delivered immediately ✅
• fertilization must occur on the tenth day of the luteal phase

Question 5

Complement, a plasma protein that helps destroy pathogens, is directly activated by:

• macrophages
• foreign antigens
• antibodies ✅
• helper T-cells

Question 6

During ventricular contraction of the heart, which valves would normally be OPEN?

• the bicuspid and tricuspid valves
• the aortic and pulmonary valves ✅
• the tricuspid and pulmonary valves
• all of the valves

Question 7

Erythroblastosis fetalis (hemolytic disease of newborns) is most likely to become a problem in Rh-negative mothers as:

• a first Rh-positive fetus develops
• a second Rh-positive fetus develops ✅
• a second Rh-negative fetus develops
• a first Rh-negative fetus develops

Question 8

Hyperventilation is most likely to be accompanied by a(n): WITCC. Honorlock Version BIO173 Final Exam Part1

• increase in blood carbon dioxide concentration and a drop in pH
• increase in blood carbon dioxide concentration and a rise in pH
• decrease in blood carbon dioxide concentration and a drop in pH
• decrease in blood carbon dioxide concentration and a rise in pH ✅

Question 9

If Mom is of blood type AB and Dad is of blood type O, which of these blood types would be possible among the couple’s children?

• all 4 types
• O only
• A and B only ✅
• AB and O only

Question 10

In humans, the determination of sex occurs:

• at the time of fertilization ✅
• in the early stages of oogenesis
• by the temperature of the environment during an individual’s early development
• in the second trimester of pregnancy

Question 11

In humans, the determination of sex occurs:

• at the time of fertilization
• in the early stages of oogenesis
• by the temperature of the environment during an individual’s early development
• in the second trimester of pregnancy

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Question 12

In normal human blood, the most numerous type of white blood cells are:

• basophils
• monocytes
• neutrophils
• erythrocytes

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Question 14

Most of the lymph fluid originates from:

• drinking more water than can be absorbed
• infrequent urination which overfills the bladder
• overproduction of cerebrospinal fluid
• hormonal imbalances which cause water retention
• greater blood flow to tissues than being carried away

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Question 15

On a lung function test, Steve finds that he has a Vital Capacity of 4500 ml, a tidal volume of 600 ml, and an expiratory reserve volume (ERV) of 1400 ml. Which of these must be his inspiratory reserve volume (IRV)?

• 2500 ml
• 6500 ml
• 8000 ml
• 2000 ml

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Question 16

Someone with Type A could safely receive blood from someone of which type?

• Type A and Type AB
• Type A and Type O
• any type
• Type A only

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Question 17

T cells are to cell-mediated (cellular) immunity as B cells are to:

• homeostatic imbalances
• inflammation
• nonspecific cellular defenses
• antibody-mediated (humoral) immunity
• chemical body defenses

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Question 18

The correct sequence for the layers within the walls of the alimentary canal from inside to the outside is the:

• serous layer, muscular layer, mucosa, submucosa
• mucosa, muscular layer, serous layer (serosa), submucosa
• mucosa, submucosa, muscular layer, serous layer
• submucosa, mucosa, serous layer, muscular layer

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Question 19

The distinction between arteries and veins is:

• the blood pressure in veins is much higher than arteries
• arteries carry oxygenated blood, and veins carry deoxygenated blood
• arteries carry blood away from the heart, veins carry blood toward from the heart
• arteries are larger than veins

Question 20

The function of the acrosome on a sperm cell is to:

• carry the chromosomes that must be delivered to the egg
• secrete hormones that enhance male fertility
• provide energy for the locomotion of sperm
• penetrate the egg wall so that fertilization can take place

Question 21

The hormone ADH targets which organ?

• kidney
• pituitary gland
• bones
• ovaries

Question 22

The key event in the actual formation of a blood clot is the change from:

• fibrin to fibrinogen
• fibrinogen to fibrin
• vitamin k to thrombin
• thrombin to prothrombin

Question 23

The kidneys are stimulated to produce renin:

• when the peritubular capillaries are dilated
• by an increase in the pH of the blood
• by a decrease in blood pressure in the kidney
• by an increase in the acidity of the urine
• by an increase in the blood supply to the kidney

Question 24

The pharynx functions as a ________, whereas the larynx functions as a ________.

• passageway for air only; passageway for food only
• common passageway for air and food; passageway for air only
• site to prevent objects from entering the trachea; site to prevent objects from entering the pharynx
• common passageway for air and food; passageway for food only

Question 25

The pulmonary veins carry blood into the:

• left atrium
• right ventricle
• right atrium
• lungs

Question 26

The quantity of oxygen in solution in the plasma:

• a small fraction of that combined with hemoglobin
• about equal to that combined on the hemoglobin
• greater than that combined with hemoglobin
• slightly less than that combined with hemoglobin
• always equal to the carbon dioxide carried in the plasma

Question 27

The secretions of the adrenal medulla act to supplement the effects of:

• reflex control
• parasympathetic innervation
• sympathetic stimulation
• vagus nerve activity
• neurosecretory substances

Question 28

What is the function of the pulmonary circuit of human circulation?

• to supply oxygen and nutrients to tissues throughout the body
• to oxygenate blood
• to supply oxygen to vital parts of the brain
• to supply the heart wall itself with blood

Question 29

What is the most direct role of LH in human males?

• promotes the meiotic division of spermatogonia, eventually producing mature sperm cells.
• causes interstitial cells in the testes to secrete testosterone
• causes the inhibition of GnRH release by the hypothalamus
• causes the accessory glands to secrete their fluids

Question 30

Which of the following statements about red blood cells is FALSE:

• Their shape is biconcave.
• They contain the pigment hemoglobin.
• They are specialized for carrying oxygen.
• They have a large multi-lobed nucleus.

Question 31

Which of the following hormones exerts its effect primarily on the reproductive organs?

• FSH
• ACTH
• thyroxin
• ADH

Question 32

Which of the following statements is INCORRECT ?

• The appendix is associated with the large intestine.
• Bile is produced in the liver and secreted into the small intestine.
• Human saliva contains an enzyme that initiates the breakdown of starch.
• The first section of the small intestine is called the duodenum.
• In humans, the large intestine is much longer than the small intestine.

Question 33

Which of these is not a NORMAL component of urine?

• creatinine
• glucose
• uric acid
• urea