Biology Review Science 30

Researchers have found that members of families with a history of heart disease are at high risk of developing the disease themselves. This suggests that heart disease is directly related to   A. diet B. heredity C. geographic location D. a society that does little exercise

Researchers have found that members of families with a history of heart disease are at high risk of developing the disease themselves. This suggests that heart disease is directly related to   B. heredity

If a patient’s resting blood pressure was 160/100, then the patient would have A. lower-than-average systolic and diastolic pressure B. higher-than-average systolic and diastolic pressure C. higher-than-average systolic and lower-than-average diastolic pressure D. lower-than-average systolic and higher-than-average diastolic pressure

If a patient’s resting blood pressure was 160/100, then the patient would have B. higher-than-average systolic and diastolic pressure

As the level of exercise increases, oxygen demand in the muscles increases. Oxygen exchange between blood and muscles occurs as blood flows through the   A. veins B. arteries C. venules D. capillaries

As the level of exercise increases, oxygen demand in the muscles increases. Oxygen exchange between blood and muscles occurs as blood flows through the   D. capillaries

The blood in the veins of the leg can flow against the force of gravity because   A. veins have one-way valves that help return blood to the heart B. the blood in the veins is pulled by a vacuum C. veins carry deoxygenated blood D. veins have thin walls

The blood in the veins of the leg can flow against the force of gravity because   A. veins have one-way valves that help return blood to the heart

The mechanisms that control blood flow in arteries are different than the mechanisms that control blood flow in the veins. In arteries,   A. there are no valves B. the valves are attached to muscles C. valves only exist in secondary vessels D. the valves are positioned in the opposite direction of the blood flow in veins

The mechanisms that control blood flow in arteries are different than the mechanisms that control blood flow in the veins. In arteries,   A. there are no valves

Treatment in a low-air-pressure chamber cause a person’s body to produce more oxygen-carrying blood cells, which are called   A. platelets B. helper T-cells C. red blood cells D. white blood cells

Treatment in a low-air-pressure chamber cause a person’s body to produce more oxygen-carrying blood cells, which are called   C. red blood cells

The skin on the back of a patient’s hand must be cleaned thoroughly before an intravenous needle is inserted into it because inserting the needle   A. stimulates B-cells to produce antibodies B. immunizes the patient against disease-causing organisms that live on the skin C. stimulates the sensory receptors in the back of the hand, which send a pain signal to the brain D. produces a break in the skin, which can let disease-causing organisms into the patient’s hand

The skin on the back of a patient’s hand must be cleaned thoroughly before an intravenous needle is inserted into it because inserting the needle   D. produces a break in the skin, which can let disease-causing organisms into the patient’s hand

Which of the following components of blood is responsible for clotting? A. T-cells B. Platelets C. Red blood cells D. White blood cells

Which of the following components of blood is responsible for clotting? B. Platelets

Which of the following blood components attacks infection-causing bacteria?   A. Platelets B. Blood plasma C. Red blood cells D. White blood cells

Which of the following blood components attacks infection-causing bacteria?   D. White blood cells

Before leaving for an expedition, members were vaccinated Before leaving for an expedition, members were vaccinated. A number of specific vaccines were required because bacteria and viruses differ in   A. size B. their immunity C. the antigens they contain D. the antibodies they contain

Before leaving for an expedition, members were vaccinated Before leaving for an expedition, members were vaccinated. A number of specific vaccines were required because bacteria and viruses differ in   C. the antigens they contain

The steps above, arranges in the order in which they occur are Some Steps Involved in the Development of Immunity   1. Helper T-cells stimulate B-cells to produce antibodies. 2. Macrophages present antigens to T-cells. 3. Memory T-cells remain in the body, ready in case a familiar antigen enters the body at a later time. 4. Suppressor T-cells turn off the immune response. The steps above, arranges in the order in which they occur are ______, ______, ______, and ______. first last

The steps above, arranges in the order in which they occur are Some Steps Involved in the Development of Immunity   1. Helper T-cells stimulate B-cells to produce antibodies. 2. Macrophages present antigens to T-cells. 3. Memory T-cells remain in the body, ready in case a familiar antigen enters the body at a later time. 4. Suppressor T-cells turn off the immune response. The steps above, arranges in the order in which they occur are __2____, ____1__, ____3__, and ___4___. first last

When an individual is exposed to the same virus a second time, the immune system produces antibodies more A. quickly, since T-cells recognize the virus B. quickly, since antigens recognize the virus C. slowly, since some antibodies are still present from the first immune response to the virus D. slowly, since most of the antibodies have been used in the first immune response to the virus

When an individual is exposed to the same virus a second time, the immune system produces antibodies more A. quickly, since T-cells recognize the virus

An immune response The Y-shaped proteins, labelled I in the diagram, are A. antigens B. antibiotics C. antibodies D. anticodons

An immune response The Y-shaped proteins, labelled I in the diagram, are C. antibodies

If a heterozygous male is crossed with a homozygous white female, what is the predicted proportion of their offspring?   A. 0% blue, 100% white B. 25% blue, 75% white C. 50% blue, 50% white D. 75% blue, 25% white

If a heterozygous male is crossed with a homozygous white female, what is the predicted proportion of their offspring?   C. 50% blue, 50% white

The term phenotype refers to the   A. segregation of chromosomes B. gene make-up of an organism C. alternate forms of the same gamete D. physical characteristics of an organism

The term phenotype refers to the   D. physical characteristics of an organism

A patient asked her doctor about the possibility of her unborn son inheriting colour-blindness from his father. In X-linked (sex-linked) conditions, male offspring do not inherit the father’s defective gene because sons receive the   A. X chromosome from their father B. X chromosome from their mother C. Y chromosome from their father D. X chromosome from either parent

A patient asked her doctor about the possibility of her unborn son inheriting colour-blindness from his father. In X-linked (sex-linked) conditions, male offspring do not inherit the father’s defective gene because sons receive the   C. Y chromosome from their father