FREE BIOLOGY AND STUDY GAMES ABOUT BIOLOGY SOL

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FREE BIOLOGY AND STUDY GAMES ABOUT BIOLOGY SOL

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Qs and Ans Expert- Explanation

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-Guarantee passing score -189 Questions and Answers -format set of multiple-choice -Expert- Explanation Question 1: Geneticists apply mathematical principles of ____ to Mendel's laws of heredity in order to predict the results of simple genetic crosses.

Answer:

probability

Question 2: ____ is a polymer consisting of nucleotides.

Answer:

DNA Question 3: The nonliving elements in an ecosystem, such as temperature, moisture, air,

salinity, and pH are:

Answer:

abiotic factors

Question 4: What are the stages of mitosis?

Answer:

prophase, metaphase, anaphase, and telophase

Question 5: The organism's appearance based on its genes

Answer:

phenotype Question 6: The number of organisms that can be supported by the resources in an ecosystem

is a limiting organization is:

Answer:

carrying capacity Question 7: The _______ model explained how heredity information is transmitted and provided the basis for an explosion of scientific research in molecular genetics.

Answer:

double helix Question 8: A change in a gene over time can be caused by:

Answer:

many factors Question 9: To burn food for the release of energy, _____ must be supplied to cells and _____ removed.

Answer:

oxygen -- carbon dioxide Question 10: The climax community in most of Virginia is a:

Answer:

deciduous oak-hickory (hardwood) forest.

Question 11: What is the function of the Golgi

Answer:

site where cell products are packaged for export Question 12: ____ individuals have two identical alleles for a particular trait.

Answer:

Homozygous

Question 13: Flow of energy occurs between ____ _____ in all ecosystems.

Answer:

trophic levels

Question 14: A fossil is

Answer:

any evidence of an organism that lived long ago.Question 15: In order for cells to make proteins, the DNA code must be:

Answer:

transcribed (copied) to messenger RNA (mRNA) Question 16: An altered gene may be on to every cell that develops from it, causing

Answer:

an altered phenotype Question 17: Plant cells and many microorganisms use solar energy to combine molecules of ______ and ______ into complex, energy-rich organic compounds.

Answer:

carbon dioxide - water

Question 18: What is the function of the cell wall?

Answer:

provides support

Question 19: Why do we sweat?

Answer:

Water absorbs heat when it evaporates, allowing organisms to release excess heat.Question 20: Information about relationships among living organisms and those that inhabited Earth in the comes from

Answer:

comparing developmental stages of organisms and examining and interpreting the fossil record.

Question 21: A tentative explanation that accounts for a set of facts and that can be tested by

further investigation is a:

Answer:

hypothesis Question 22: At each of the hierarchical levels of organization - molecular, cellular, organism, population, community, and ecosystem - structure is related to ______ .

Answer:

function

Question 23: What is the function of the chloroplasts?

Answer:

site of photosynthesis Question 24: The ______ is the unifying theme in biology because it emphasizes the similarity of all living things.

Answer:

cell theory

Question 25: During mitosis, the nucleus of the cell _____, forming

Answer:

divides ----two nuclei with identical genetic information Question 26: Before a cell divides, the instructions are ____ so that each of the two new cells gets all the necessary information for carrying on life functions.

Answer:

duplicated Question 27: All the living organisms that inhabit the environment, including predators, food

sources, and competitors are:

Answer:

biotic factors