Subject: Biology   / General Biology
Question
1 of 25
All of the following are characteristics of living things except
growth.
production of diseases.
reproduction.
metabolism .
reaction to the external environment.
Question
2 of 25
One important function of carbohydrates is that they
form enzymes.
are structural molecules.
repel water.
store energy.
hold genetic information.
Question
3 of 25
Which of the following organic molecules store energy, provide insulation, and assist in buoyancy?
Proteins
Carbohydrates
Lipids
Nucleic acids
Amino acids
Question
4 of 25
One of the products of photosynthesis is
water.
energy released into the surrounding environment.
oxygen.
carbon dioxide.
energy contained in the water molecules.
Question
5 of 25
During the process of cellular respiration,
energy is released from organic molecules to do work in the cell
carbon dioxide and water form sugars
solar energy is transformed into chemical energy
oxygen and carbon dioxide are produced
sunlight is used to create energy
Question
6 of 25
Which of the following is not true of a cell?
It is the basic structural unit of life.
Mitochondria are found in both plant and animal cells.
Cell walls are found in all plant and animal cells.
All organisms are made of one or more cells.
The membrane-bound structures within most cells are called organelles.
Question
7 of 25
Which of the following is classified as a prokaryotic cell?
Bacteria
Fungi
Protist
Animal
Plant
Question
8 of 25
Which of the following shows the correct level of organization in order of increasing complexity?
Molecule, cell, organelle, individual, community
Organelle, tissue, organ, community, population
Ecosystem, individual, organ, cell
Molecule, atom, cell, organ system, ecosystem
Atom, molecule, organ, population, ecosystem
Question
9 of 25
A group of organisms of different species living together on a rocky beach is an example of which of the following?
Population
Community
Individual
Ecosystem
Colony
Question
10 of 25
The ecosystem best encompasses which of the following?
All living organisms living in one area
Populations in one area but not the physical environment
The community or communities but not the physical environment
The community or communities and the physical environment
Populations and communities living in one area
Question
11 of 25
The cell membrane is said to be “selectively permeable” because it
allows only some substances to move through.
allows all substances to enter the cell.
allows all substances to leave the cell.
allows only the smallest molecules to enter the cell.
allows only water and salts to enter the cell.
Question
12 of 25
Marine organisms whose internal salt concentration varies with that of their environment are examples of which of the following?
Osmoregulators
Isotonic organisms
Poikilotherms
Osmoconformers
Homeotherms
Question
13 of 25
All of the following are examples of asexual reproduction except
fission.
fertilization.
plants sending out “runners.”
budding.
cell division.
Question
14 of 25
Which of the following shows the correct taxonomic levels from most inclusive to least inclusive?
Kingdom, phylum, order, species, genus
Kingdom, phylum, family, genus, species
Kingdom, family, order, phylum, genus
Kingdom, order, phylum, genus, species
Order, family, phylum, genus, species
Question
15 of 25
Cellular respiration occurs in the
mitochondria.
endoplasmic reticulum.
Golgi complex.
nucleus.
centrioles.
Question
16 of 25
The end product of cellular respiration is
oxygen.
nitrogen.
ATP.
amino acids.
glucose.
Question
17 of 25
The events of evolution best explain
how organisms obtain energy from organic molecules.
why people use a three domain system of classification.
how life originated on Earth.
the growth and development of individual organisms.
why so many organisms have characteristics in common.
Question
18 of 25
Two single-cell organisms are placed in a 3.5% salt solution. Cell A enlarges slightly and then stops. Cell B enlarges and finally ruptures. Which of the following was true at the time the cells were placed in the saltwater?
Cell A was hypertonic to the solution and cell B was hypotonic.
Cell A was hypotonic to the solution and cell B was hypertonic.
Cells A and B were isotonic in relation to each other.
Cell B was hypertonic in relation to cell A.
Cell A was hypertonic in relation to cell B.
Question
19 of 25
Natural selection is best shown by _________________.
new species being formed by genetic engineering
breeders selecting animals with desirable characteristics to mate together
individuals with adaptive traits surviving and leaving offspring
smaller organisms in any habitat dying out when the environment changes
osmoconformers surviving in seawater of constant temperature and salinity
Question
20 of 25
Which kingdom of eukaryotic organisms is multicellular and capture its food?
Fungi
Animals
Plants
Protists
Bacteria
Question
21 of 25
In order to transport materials in and out of an organism efficiently, the best situation would be to have a _____________________.
small surface area to volume ratio
a 1:1 ratio of surface area to volume
large surface area to volume ratio
inside volume that is significantly larger than the surface area of the membrane
reduced surface area of the membrane in comparison to the volume of the cell
Question
22 of 25
______________ and _____________ were long ago free-living cells that joined with other cells in a symbiotic association.
Chloroplasts and the nucleus
Mitochondria and ribosomes
Chloroplasts and Golgi bodies
Mitochondria and chloroplasts
Ribosomes and the Golgi body
Question
23 of 25
A unicellular freshwater organism suddenly is placed in a marine environment. It would be expected that the cell would __________________.
increase in size
decrease in size
stay the same size
change size from smaller to larger and back to smaller
neither increase or decrease in size
Question
24 of 25
A freshwater cell placed into a marine environment would initially be ________________ in relation to saltwater.
hypotonic
hypertonic
isotonic
hypoxic
anoxic
Question
25 of 25
Sea turtles maintain constant water-salt balance by ________________________________.
moving back and forth between fresh and salt water
drinking sea water and retaining as much salt as possible
excreting water throughout the day
secreting salts through glands near the eyes
retaining both salt and water in their kidneys
