MATH FINAL EXAM 101

The smallest unit of life that can exist as a separate entity is a(n)

cell

What is the correct ordering in the hierarchal levels of the organization of life, from the least inclusive to the most inclusive?

cells, tissues, organs, organisms, and ecosystems

a community

includes all the populations of all species in a given area

DNA codes for the production of

proteins

Each cell is able to maintain an internal environment within a range that favors survival. This condition is called

homeostasis

isotopes of atoms

have the same number of protons but a different number of neutrons

The bond in table salt (NaCl) is

ionic

What affects the rate diffusion through a selectively permeable membrane? I. Concentration Gradient, II. Temperature, III. Molecular Size

I, II, and III

What product of the light dependent reaction is released directly into the environment?

O2

For glycolysis to begin

there must be an input of energy from ATP

The activation energy of a reaction refers to the minimum amount of energy

necessary to cause a reaction to proceed on its own

How many net ATP molecules are produced per molecule of glucose broken down during glycolysis?

2

Photosynthesis plants readily

provide food for others

The electron transport chain yields __________ ATPs.

32

HeLa cells have been used in research to

study the mechanisms of cancer

Homologous chromosomes have the

same, length, shape, and genes

Chromatids that are attached at the centromere are called ________ chromatids.

sisterc

Crossing over occurs during

prophase I

A gene locus is

the location of a gene on a chromosome

Various forms that a single gene can take at a given locus are called

alleles

The spindle apparatus is composed of

microtubules

the chromosomes are aligned midway between the spindle poles during

metaphase

Which of the following is an advantage of sexual reproduction?

it yields offspring with novel combinations

Anaphase

is initiated when the chromosomes begin to move apart

The phase depicted in the figure below is

metaphase

Which statement correctly describes human chromosomes?

the diploid number is 46

Which action is unable to produce variation?

asexual reproduction

The CFTR protein is responsible for

pumping chloride ions out of the cell

Which of the following statements most completely describes why the pea plant was an excellent choice for Mendel's experiments?

true-breeding varieties were available, the plant can self-fertilize, and it can be cross-fertilized

An individual with a genetic makeup of aaBB is called

true-breeding

The number of individual in a specific portion of habitat is the population's

density

The distribution of hippopotamuses in muddy shallows in generally

clumped

Scientists use ______ sampling to estimate the population size of mobile animals

mark-recapture

The effect of resource availability on population size ultimately determines

the carrying capacity of the environment

The ______ of a human population is the average number of children born to woman during her reproductive years.

total fertility rate