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Which of the following pathways best represents the expected flow of blood from the human heart to an organ?

A. Blood pumped from the heart first enters arterioles that then merge to form arteries that deliver blood to the organ

B. Blood pumped from the heart first enters arteries that then narrow to form arterioles that deliver blood to capillaries of the organ

C. Blood pumped from the heart first enters versus that then narrow to form venules that deliver blood to arteries to the organ

D. Blood pumped from the heart first enters arteries that then narrow to form arterioles that deliver blood to capillaries

Answer Explanation:

From the heart, blood flows through major arteries, which then branch to give rise to arterioles, which then divide into capillaries that deliver blood to the target organ.

Therefore, the Correct Answer is B.

Q #1: in pea plants, green pod color (6) is dominant to yellow pod color ( A cross was done between a plant with green pods and a plant with yellow pods. Of the resulting offspring 50% had green pods and 50% had yellow pods. Which of the following were the genotypes of both parent plants?

A. Ggx Gg

B. GG x gg

C. Gg x gg

D. gg x gg

Answer Explanation

G

g

g

Gg

gg

g

Gg

gg
Q #2: Escherichia cell is plated on nutrient agar plates that each contain a different type of antibiotic. The shaded area represents growth of the bacteria. Which of the following plates contains bacteria that were most resistant to the antibiotic

A. A

B. B

C. C

D. D

Answer Explanation

This is the plate with the most growth despite the presence of antibiotic cover.
Q #3: The component of an atom that possesses relatively little mass, thus being negligible in calculating the atomic mass number, is the:

A. Electron

B. Quark

C. Neutron

D. Proton

Answer Explanation

Rationale

Electrons are subatomic particles that have relatively little mass and are negligible when calculating atomic mass. The atomic number is usually the sum of protons and neutrons in the nucleus of the atom.

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