bio test 2

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the diagram of the human life cycle shows that

meiosis produces a haploid sperm and egg cells

What chromosomes belong to a normal human male?

44 autosomes, one X chromosome, and one Y chromosome

nucleosomes are made of

DNA and histone proteins

A horse eating some hay is an example of what

a consumer eating a producer

What must pyruvic acid be converted to before it can enter the citric acid cycle

acetyl CoA

alleles are described as

alternate versions of a gene

which of the following techniques is used to collect fetal cells during pregnancy for genetic testing

aminocentesis

what is the difference between a benign and a malignant tumor

benign tumors do not metastasize; malignant tumors do

which of the following are produced as a result of cellular respiration

carbon dioxide, water, and ATP

homologous chromosomes

carry genes controlling the same inherited characteristics

during metaphase

chromosomes line up in the middle of the cell

which stages occur in the mitochondria

citric acid cycle and electron transport

the principal that energy cannot be created or destroyed is known as

conservation of energy

Where in the cell does glycolysis occur

cytoplasm

When a molecule absorbs a photon, one of its electrons is raised to the what state.

excited

Cells with a higher concentration of ions than the surrounding medium tend to

expand

what is the function of the stomata

gas exchange

which of the following is the correct sequence of stages in cellular respiration

glycolysis, citric acid cycle, and electron transport

the shorter the wavelength of visible light, the

greater the energy

in humans, the inheritance of what is best explained as being polygenic

height

linked genes are usually

located close together on a chromosome

a cell that neither gains nor looses a net amount of water at equilibrium when it is immersed in a solution

isotonic to its environment

what happens when a single amino acid substitutes a hemoglobin gene

it may alter a protein so that it no longer functions properly

electron transport takes place in the

mitochondria

one difference between mitosis and meiosis

mitosis produces cells genetically identical to the parent cell, but meiosis does not

which of the following reactant primarily come(s) from the air

oxygen and carbon dioxide

What data or test would you seek to determine whether or not a trait is sex linked?

pedigree

what name is give to the collection of traits exhibited by an organism

phenotype

what name is given to a discrete packet of light

photon

a rock on the top of a mountain contains what energy

potential

the correct sequence of stages of mitosis is

prophase, metaphase, anaphase, telophase

duplicated chromosomes consists of two

sister chromatids

what is energy

the capacity to cause change

osmosis can be defined as

the definition of water across a selectively permeable membrane

what is the key to the recognition of codominance

the heterozygote expresses the phenotype of both homozygotes.

what is the key to the recognition of incomplete dominance

the phenotype of the heterozygous falls between the phenotypes of the homozygous

a balloon permeable to water but not to glucose contains a 70% glucose solution. A beaker contains a 35% glucose solution, which of the following is true

the solution in the balloon is hypertonic relative to the solution in the beaker

A balloon permeable to water but not to glucose contains a 10% glucose solution. A beaker contains a 5% glucose solution. What will happen when the balloon is submerged in the beaker

the volume of water in the beaker will decrease

the color that we see when at a pigmented object is

the wavelength that are reflected or transmitted by the pigmented object

how many nucleotides make up a codon

three

The transfer of information from DNA to RNA is called

transcription

the karyotypes in the figure shows

trisomy 21, a cause of down syndrome


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