Q: Which equation correctly represents the metabolism of glucose during cellular respiration?

$$\mathrm{C_6H_{12}O_6$} + 6\mathrm{O_2$} \rightarrow 6\mathrm{CO_2$} + 6\mathrm{H_2O} + \text{energy}$$

Question 1

Which of the following best describes the difference between cytology and histology?

Accepted Answer

Cytology focuses on the structure and function of cells, while histology examines the organization and structure of tissues.

Question 2

Homeostasis is crucial for maintaining internal stability. Which of the following is an example of a negative feedback loop in the human body?

Accepted Answer

Regulation of blood glucose levels by insulin

Question 3

Which equation correctly represents the metabolism of glucose during cellular respiration?

Accepted Answer

$$\mathrm{C_6H_{12}O_6$} + 6\mathrm{O_2$} ightarrow 6\mathrm{CO_2$} + 6\mathrm{H_2O} + 	ext{energy}$$

Question 4

Which of the following best explains why water is considered a universal solvent?

Accepted Answer

Water is polar, allowing it to dissolve many ionic and polar substances.

Question 5

A patient is experiencing muscle weakness due to a malfunctioning sodium-potassium pump. Which equation best represents the normal function of this pump?

Accepted Answer

$$3\mathrm{Na^+}$$ out, $$2\mathrm{K^+} in$$, using 1 ATP

Question 6

Which of the following organelles is primarily responsible for ATP production in eukaryotic cells?

Accepted Answer

Mitochondrion

Question 7

Which type of chemical bond is least likely to dissolve in water?

Accepted Answer

Covalent bond

Question 8

During protein synthesis, which process involves the conversion of mRNA into a polypeptide chain?

Accepted Answer

Translation

Question 9

Which of the following best describes the role of enzymes in chemical reactions?

Accepted Answer

Enzymes lower the activation energy, increasing the rate of reactions.

Question 10

A cell placed in a hypertonic solution will:

Accepted Answer

Lose water and shrink

Question 11

Which of the following is NOT a major function of the cytoskeleton?

Accepted Answer

Synthesizing proteins

Question 12

Which of the following is an example of a positive feedback loop?

Accepted Answer

Release of oxytocin during childbirth

Question 13

Which of the following best describes the Central Dogma of Biology?

Accepted Answer

DNA is transcribed into RNA, which is then translated into protein.

Question 14

Which of the following correctly lists the four major macromolecules found in cells?

Accepted Answer

Carbohydrates, lipids, nucleic acids, proteins

Question 15

Which of the following statements about the fluid mosaic model of the cell membrane is correct?

Accepted Answer

Phospholipids and proteins can move laterally within the membrane.

Question 16

Which step of the cell cycle does DNA replication occur?

Accepted Answer

S phase

Question 17

Which of the following best describes the process of dehydration synthesis?

Accepted Answer

Joining monomers to form polymers by removing water

Question 18

Which organelle is responsible for packaging and modifying proteins for secretion?

Accepted Answer

Golgi apparatus

Question 19

Which of the following is true regarding the structure of DNA?

Accepted Answer

DNA consists of two antiparallel strands held together by hydrogen bonds between complementary bases.

Question 20

A patient with a malignant tumor is diagnosed with metastasis. What does metastasis mean?

Accepted Answer

The tumor cells have spread to distant sites in the body.

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