General Cellular Biology 1st Test Prep

Question 1

Kingdoms (by Robert Whittaker) are classified based on the______of the organisms.

Answer 1

Characteristics such as cell structure

Question 2

A cell lacking which of the following structures is most likely to be a prokaryotic?

Answer 2

Nuclear membrane

Question 3

A mature apple on tree produces ethylene. Ethylene signals neighboring apples to mature. Neighbor apples produces more ethylene, and more apples get matured. The above process is an example of which of the following?

Answer 3

positive feedback regulation

Question 4

About 25 of the 92 natural elements are known to be essential to life. Four of these 25 elements make up approximately 96% of living matter. Which of the following element is a part of those four elements?

Answer 4

carbon, hydrogen, nitrogen, oxygen

Question 5

All the organisms on your campus make up ___________.

Answer 5

Community

Question 6

An individual is suffering from a streptococcus infection in their throat. Which of the following do the individual and the streptococcus bacteria have in common??

Answer 6

They both belong to the same domain

Question 7

As letters are to English language, _________is/are to genetic information.

Answer 7

Nucleotides

Question 8

Atoms have no electric charge because they have______.

Answer 8

Have an equal number of electrons and protons

Question 9

Genes produce _________.

Answer 9

Protein

Question 10

How is covalent bond formed?

Answer 10

when electrons are shared between atoms and are attracted by the nuclei of both atoms

Question 11

Hydrogen ion (H+) is also called ‘proton’ because ______.

Answer 11

When hydrogen loses an electron to become H+ only a proton remains.

Question 12

If an atom has a charge of +1, which of the following must be true?

Answer 12

It has one more proton than it does electrons.

Question 13

The glucose level in the blood goes up after the meal. As the blood glucose level goes up high, the pancreas secretes insulin and maintains the glucose level to the normal range by taking the blood glucose away from the blood. This is an example of the application of which concept to the study of biology.

Answer 13

Homeostasis

Question 14

To find out the number of neutrons in an atom, we need to know the following.

Answer 14

Mass and Atomic number

Question 15

Under which of the following conditions will an atom be the most stable?

Answer 15

When all of the electron orbitals in the valence shell are filled

Question 16

Water (H2O) is a polar covalent molecule. A covalent bond is likely to be polar under which of the following conditions?

Answer 16

One of the atoms sharing electrons is much more electronegative than the other atom.

Question 17

What coefficients must be placed in the following blanks so that all atoms are accounted for in the products?

Answer 17

2; 2

Question 18

Which branch of biology is concerned with the naming and classifying of organisms?

Answer 18

Taxonomy

Question 19

Which of the following chemical bond is the strongest?

Answer 19

Covalent bond

Question 20

Which of the following correctly describes chemical equilibrium?

Answer 20

Forward and reverse reactions continue with no effect on the concentrations of the reactants and products.

Question 21

Which of the following is an explanation of the natural selection of Charles Darwin’s observation?

Answer 21

Survival and reproduction are not random

Question 22

Which of the following is correctly ordered to present the biological level from low to high?

Answer 22

Atoms, (Micro) molecules, Macromolecules, Organelles, Cells, Tissues, Organs and organ systems, Organisms, Populations, Communities, Ecosystems, Biosphere.

Question 23

Which of the following is the characteristics shared by members of both domain Bacteria and domain Archaea?

Answer 23

Cytosol and DNA

Question 24

Which of the following is the correct taxonomic hierarchical order of organisms from high to low?

Answer 24

Kingdom, Phylum/Division, Class, Order, Family, Genus, Species

Question 25

Which of the following is the quality of a good scientific hypothesis?

Answer 25

be testable, be falsifiable, Have alternative hypotheses

Question 26

Which of the following models represents an atom that is most likely to form a cation with a charge of +1?

Answer 26

1 inside; 2 middle; 1 outside

Question 27

Which of the following models represents an atom that is most likely to form an anion with a charge of -1?

Answer 27

1 inside; 2 middle; 7 outside

Question 28

Which of the following statements is true regarding the complexity of biological systems?

Answer 28

Knowing the function of a component of a living system can provide insights into the structure and organization of the living system.

Question 29

Which of the following types of cells use deoxyribonucleic acid (DNA) as their genetic material but do not have their DNA encased within a nuclear envelope?

Answer 29

Archaean

Question 30

Which of the following was used to classify organisms into Domains by Carl Woes?

Answer 30

Bacteria, Archaea, and Eukarya.

Question 31

Which statement about the ecological organization is NOT correct?

Answer 31

An organism is part of a community.

Question 32

Which statement is true of all atoms that are anions?

Answer 32

The atom has more electrons than protons.

Question 33

Considering that the reactants have no charge, what are the products of the reaction shown above?

Answer 33

a cation with a net charge of +1 and an anion with a net charge of -1

Question 34

What is the atomic number of the cation formed in the reaction in the illustration?

Answer 34

11

Question 35

Refer to the following figure (first three rows of the periodic table) to answer the questions below.

What element does not react with other elements?

Answer 35

Helium

Question 36

How many electrons will a single atom of sulfur with no charge and no bonds have in its valence shell?

Answer 36

6

Question 37

Refer to the following figure (first three rows of the periodic table) to answer the questions below.

Which pair of elements is most likely to react if brought them together?

Answer 37

nitrogen and phosphorus

Question 38

Refer to the paragraph on Redi’s experiments. What hypothesis was being tested in the initial experiment with open versus sealed jars?

Answer 38

Maggots do not arise spontaneously, but from eggs laid by adult flies.

Question 39

Refer to the paragraph on Redi’s experiments. In both experiments, flies appeared in all of the open jars and only in the open jars. Which one of the following statements is correct?

Answer 39

The experiment supports the hypothesis that maggots arise only from eggs laid by adult flies.