General biology chpt. 1-2

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Which of the following lists the terms from simplest to most complex?

cells, tissues, organs, organ systems, organism

The smallest unit of life is a

cell

The process of_________ transforms solar energy into chemical energy.

photosynthesis

Which of the following is matched incorrectly?

gene-organelle

All the chemical reactions that occur in a cell are called?

Metabolism

All single-celled organisms including archaea and bacteria are prokaryotes.

False because some eukaryotes, including protista, are single-celled.

Prokaryotes belong to

Domain Archaea

The mountain zebra (Equus zebra)and the donkey (Equus asinus) belong to the same species

False because the specific epithet is different.

Which of the following correctly list the classification categories from least to most inclusive?

species, genus, family, order, class, phylum, kingdom, domain

The circulatory system of a whale is considered an organ system because it is composed of different

organs

All of the following are true with respect to DNA except

asexual reproduction results in offspring with DNA that is different from the parent

The various species of honeycreepers have an assortment of different bills, but all species have a similar size and body shape. This is an example of

descent with modification

Which of the following terms is not correctly matched with a correct example?

A tropical rainforest-community

Which of the following is the most encompassing level of organization?

ecosystem

Kevin is studying predator-prey interactions. One day he notices a spider eating a cricket caught in it's web. Later that day, a bird eats the spider. How many consumers are there in this scenario?

3

Maria is studying predator-prey interactions. One day she notices a spider eating a cricket caught in it's web. Later that day, a bird eats the spider . How many producers are there in this scenario?

0

Steve is studying predator-prey interactions. One day he notices a spider eating a cricket caught in it's web. Later that day, a bird eats the spider. How many populations are included in his study.

3

Brittany is studying predator-prey interactions. One day she notices a spider eating a cricket caught in it's web. Later that day, a bird eats the spider. Based on the organisms involved in the study, what level of organization is she studying?

community

Refer to the figure below. How many different kingdoms are represented in the this figure?

3

Which of the following statements is NOT true with respect to scientific theory?

Theories are possible explanations for natural events.

Which of the following is NOT true with regards to extinction?

All extinctions are caused by human activities such as habitat destruction.

Which of the following is NOT true about biodiversity?

As extinction rates increase, biodiversity increases.

Living organisms must constantly take in energy in order to power functions necessary to remain alive. The chemical reactions that involve energy conversion are called

metabolism

The metabolic reactions that take place in a cell obey all of the same laws and require the same conditions necessary for any chemical reaction to occur. To make these reactions possible cells

maintain the correct temperature, moisture level and acidity as well as other factors.

Evolutionary processes lead to organisms that

function well in a given environment

In science, a theory

encompasses many hypotheses

Bioethics is a branch of biology concerned with

The development and consequences of biological technology.

A scientist discovers a new application for a common medical procedure that involves taking tissues from one patient and placing them into another patient. The procedure always results in a full recovery for the patient receiving the tissue but results in long-term disability for the donor 10% of the time. According to bioethics, making the decision as to whether this procedure should be allowed in this country should be the responsibility of

All citizens

An atom's outermost electron shell

determines it's chemical reactivity

Deoxyribose is a sugar found in

DNA

A covalent bond occurs when

electrons are shared between two atoms to complete their octets.

The type of bond that would form from the transfer of an electron from one atom to another, as depicted in the figure, is a

ionic

A water molecule, as shown here, is polar because of

unequal sharing of electrons

Testosterone is a lipid-based hormone; insulin is a ________-based hormone

protein

The figure below is depicting the interaction of water molecules with one another which involves the use of

hydrogen bonds

Bases can

both take up hydrogen ions and release hydroxide ions

Which of the following correctly lists the parts of a nucleotide of RNA?

nitrogen-containing base, ribose, phosphate

The four main categories of organic macromolecules are

carbohydrates, lipids, proteins, and nucleic acides

Plants store their sugar in the form of

starch

When hot chocolate mix is added to water the hot chocolate is the __________ and the water is the_______

solute;solvent

A coke has a pH of 3.5 this means that it has an excess of _______ ions and would be called a (n)

H+; acid

Humans store their polysaccharides in the form of

glycogen

A fatty acid that has at least two double bonds is called

unsaturated

A nucleotide is made of which of the following chemical components?

a nitrogen-containing base, a phosphate group, and a sugar

An element has an atomic number of 78. The number of protons and electrons in a neutral atom of the element are

78 protons and 78 electrons

A molecule is said to be organic if it contains

carbon and hydrogen atoms

The basic building block or subunit of many biological molecules is called a

monomer

In the reaction 6CO2+ 6H2O --------> C6H12O6+ 6O2 carbon dioxide is one of the

reactants

Why do cells need buffering agents

to minimize the changes in pH of their internal environment

Some insects can stride on the surface of water because water

has surface tension

The pH of pure water is ________ because_______

7.0; water dissociates an equal number of H+ ions and OH-

A gene in DNA is the code for

a sequence of amino acids

Chemical bonds involve

the giving, taking or sharing of electrons

If a material mixes readily with water it is identified as

hydorphilic

Which of the following levels of protein folding would include shapes identified as helix and pleated sheet?

secondary structure

The shape of a protein is a critical factor in it's function

True

The "primary structure" of a protein refers to

the number and sequence of amino acids

How does DNA differ from RNA?

DNA is comprised of a double strand, RNA is a single strand

The principle role for sugars in living things is

for creating energy

A fat is formed when three fatty acids join a glycerol by a _____________

dehydration reaction

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