FREE BIOLOGY AND STUDY GAMES ABOUT UNIT 2

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FREE BIOLOGY AND STUDY GAMES ABOUT UNIT 2

BIOLOGY EXAM

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -21 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: which organelle controls the cell's activities and is responsible for inheritance?

Answer:

Nucleus Question 2: The metabolic cycle fueled by acetyl CoA formed after glycolysis in cellular respiration. Chemical reactions in the citric acid cycle complete the metabolic breakdown of glucose molecules to carbon dioxide.

Answer:

citric acid cycle Question 3: Which microscope has high resolution and magnification (but not the highest) and produces 3D images?

Answer:

Scanning electron microscope

Question 4: The production of ATP using energy derived from the redox reactions of an electron transport chain; the third major stage of cellular respiration.

Answer:

oxidative phosphorylation Question 5: sequence of steps as energy is extracted from glucose during cellular respiration.

Answer:

glycolysis ? acetyl CoA ? citric acid cycle ? electron transport chain

Question 6: what are bound ribosomes?

Answer:

ribosomes that are attached to the endoplasmic reticulum

Question 7: What is chemiosmosis

Answer:

Energy-coupling mechanics that uses the energy of hydrogen ion (H^+) gradients across membranes to phosphorylate ADP; powers most ATP synthesis in cells.

Question 8: What is inside of the nucleus?

Answer:

proteins and dna called chromatin

Question 9: What are membranes primarily made of?

Answer:

phospholipids

Question 10: What is the function of a ribosome?

Answer:

to carry on protein synthesis

Question 11: Who were cells first observed by?

Answer:

Robert Hooke

Question 12: What is a nuclear envelope?

Answer:

a double membrane with pores that allow material to flow in and out of the nucleus.Question 13: Which microscope has the highest resolution and magnification by produced an image that is flat with no depth?

Answer:

Transmission electron microscope

Question 14: What is the correct general equation for cellular respiration

Answer:

C6H12O6 + 6 O2 ? 6 CO2 + 6 H2O + ATP energy

Question 15: what are free ribosomes?

Answer:

Ribosomes that are suspended in the cytoplasm

Question 16: What is ATP Synthase

Answer:

A cluster of several membrane proteins that function in chemiosmosis with adjacent electron transport chains, using the energy of a hydrogen ion concentration gradient to make ATP.Question 17: What theory states that all living things are composed of cells and that all cells come from other cells?

Answer:

Cell theory

Question 18: What is the nuclear envelope attached to?

Answer:

endoplasmic reticulum Question 19: Which microscope is the easiest to use and has the lowest resolution and lowest magnification?

Answer:

Light Microscope

Question 20: what is the multistep chemical breakdown of a molecule of glucose into two molecules of pyruvate; the first stage of cellular respiration in all organisms; occurs in the cytoplasmic fluid.

Answer:

Glycoysis

Question 21: What is the endomembrane system composed of?

Answer:

nuclear envelope,endoplasmic reticulum, golgi apparatus, lysosomes, vacuoles and the plasma membrane.