Living Environment
Many animals have developed courtship behaviors. Males will often dance, swim, or sing in a particular way to attract a female. Males who are more successful at the courtship behavior will have a greater chance of having more offspring. This behavior is a result of....
(1) natural selection
(2) genetic engineering
(3) asexual reproduction
(4) gene manipulation
(1) natural selection
Mitochondria provide ribosomes with ...
(1) ATP for protein synthesis
(2) amino acids for protein synthesis
(3) oxygen for respiration
(4) carbon dioxide for the production of sugars
(1) ATP for protein synthesis
(1) Level A – producers
An increase in human population puts a stress on resources that can be renewed such as
(1) trees and coal
(2) water and gasoline
(3) oil and natural gas
(4) water and trees
(4) water and trees
The shape of a protein molecule directly determines its
(1) movements through the cytoplasm
(2) functions inside and outside of cells
(3) roles in building water molecules
(4) circulation throughout the body
(2) functions inside and outside of cells
One primary function of the cell membrane is ...
(1) regulating the flow of simple sugars into or out of the cell
(2) synthesizing substances by breaking down cell organelles
(3) storing carbohydrates, water, and starches for future use
(4) digesting carbohydrates, fats, and protein
(1) regulating the flow of simple sugars into or out of the cell
The kidney is an organ that collects wastes and excess water from the blood and sends them to the bladder where they are stored before being removed from the body. Which two systems work together to perform this function?
(1) immune and respiratory
(2) circulatory and excretory
(3) skeletal and nervous
(4) digestive and circulatory
(2) circulatory and excretory
According to scientists, ocean waves could be a source of energy. Devices are being designed to capture the energy from waves and supply electricity to coastal areas. A direct benefit of utilizing this technology to produce energy would be the...
(1) destruction of habitats near the devices
(2) decreased use of nonrenewable resources
(3) release of gases needed for photosynthesis
(4) increased use of finite resources
(2) decreased use of nonrenewable resources
a farmer grows beans that he sells to local markets. Over a period of 40 years, the farmer has identified the plants that produced the most beans and only used those beans to produce new plants. This procedure is part of the process of
(1) selective breeding
(2) genetic engineering
(3) replication
(4) cloning
(1) selective breeding
As a result of habitat destruction, the size of the Florida panther population has been drastically reduced. It is estimated that there are only 100 to 160 Florida panthers in the wild. Which statement best explains why the Florida panther population may not continue to evolve?
(1) There is no longer a chance of mutations occurring in the population.
(2) There is a lack of competition for limited environmental resources.
(3) There is no longer a chance of a trait providing a reproductive advantage to the population.
(4) There is a lack of genetic variation for selection to act upon.
(4) There is a lack of genetic variation for selection to act upon.
Some salmon have been genetically modified to grow bigger and faster than wild salmon. They are grown in fish-farming facilities. These genetically modified fish should not be introduced into a natural habitat because.....
(1) the salmon would recycle nutrients at a rapid rate
(2) their rapid growth could cause them to outcompete native salmon
(3) they would not have enough oxygen for survival
(4)they would reproduce asexually once they were released
(2) their rapid growth could cause them to outcompete native salmon
(1) cellular organization
(2) nutrition
(3) inheritance
(4) metabolic activity
(4) metabolic activity
Nonrenewable resources are
(1) not finite and are not depleted over time
(2) not finite and are depleted over time
(3) finite and are not depleted over time
(4) finite and are depleted over time
(4) finite and are depleted over time
Which occurrence represents an example of evolution?
(1) Exposure to radiation reduces the rate of mutation in leaf cells.
(2) A mutation in a liver cell causes a person to produce an enzyme that is less efficient.
(3) Cells in a zygote eventually change into bone cells or skin cells.
(4) Some antibiotics are almost useless, because pathogens have developed a resistance to these antibiotics.
(4) Some antibiotics are almost useless, because pathogens have developed a resistance to these antibiotics.
(3) ATP and carbon dioxide
(1) a new base has been inserted
(1) The cells have identical genetic instructions, but different parts of these instructions are being expressed in each cell.
Which statement is an example of how the external environment can influence gene expression?
(1) Some flowering plants that inherit a gene for white flowers and a gene for red flowers will produce pink flowers.
(2) Some animals that inherit genes for brown fur will grow white fur if the outside temperature falls below a certain level.
(3) In some breeds of cat, certain fur-color genes are found only in females.
(4) A pea plant is short-stemmed only if it inherits the genes for the trait from both parents
(2) Some animals that inherit genes for brown fur will grow white fur if the outside temperature falls below a certain level.
(2) more active transport occurs in cell A than in cell B
(3) When the ozone layer is thinner, more UV-B gets through it
(2) assessing risks, costs, and benefits