FREE AND STUDY GAMES ABOUT BIOLOGY ZHONG EXAM

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FREE AND STUDY GAMES ABOUT BIOLOGY ZHONG EXAM

QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -329 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: - monomers are covalently linked to form polymers by removing water.

Answer:

dehydration synthesis Question 2: in their gut that are able to break down cellulose for use by the animal

Answer:

microorganisms Question 3: smallest unit of an element that still retains the properties of that element

Answer:

atom

Question 4: - substance that is dissolved in a solvent.

Answer:

solute

Question 5: the further away an orbital carries an electron from the nucleus...

Answer:

the higher the energy level of the electron

Question 6: characteristics of denaturation

Answer:

Change in the environment (temperature, pH, or exposure to various chemicals) can change the shape of a protein = denature the protein;denatured proteins typically cannot perform their normal biological function;denaturation is generally irreversible Question 7: have at least one carbon atom covalently bound to another carbon atom or to hydrogen (carbon skeletons + hydrogen/functional groups)

Answer:

organic compounds

Question 8: How do you know if a substance is molecular?

Answer:

, then an individual molecule is the smallest unit of the substance that exhibits the properties of the substance Question 9: statistical averages, and are used for measuring time passage in many areas of science (carbon dating,

Answer:

decay rates

Question 10: Which polymers are composed of amino acids?

Answer:

proteins Question 11: - contributes a mass of approximately 1 mass unit, and carries a (+1) electrical charge

Answer:

proton

Question 12: The chemistry to study carbon.

Answer:

organic compounds Question 13: : carbon atoms connect together by covalent bonds

Answer:

carbon skeletons

Question 14: what is less dense than water

Answer:

ice Question 15: (X-PO4H2): weakly acidic; found in such things as phospholipids and nucleic acids

Answer:

phosphate group

Question 16: uses of disaccahrides

Answer:

short term energy storage Question 17: Which of the following is not attached to the central carbon atom in an amino acid?

Answer:

an oxygen

Question 18: The unusual .... of water leads to temperature stability

Answer:

specific heat

Question 19: 5. protein conformation determines

Answer:

function

Question 20: ph of most living cells

Answer:

around 7.2 to 7.4

Question 21: determine the structure (and thus the properties) of a protein

Answer:

sequence of amino acids Question 22: If a DNA double helix is 100 nucleotide pairs long and contains 25 adenine bases, how many guanine bases does it contain?

Answer:

75

Question 23: attraction between molecules of the same substance.

Answer:

cohesion

Question 24: 2 types of nucleic acids

Answer:

dna rna

Question 25: main function of lipids for animals

Answer:

are energy storage, insulation to cold surface

Question 26: assist in the proper folding of other proteins

Answer:

chaperonin

Question 27: The complexity and variety of organic molecules is due to

Answer:

chemical versatility of carbon atoms