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Biology

At which point in the eukaryotic cell cycle does mitosis occur?

Cynthia Baker

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The inside of a membrane bilayer is _____. A-nonpermeable B-polar C-hydrophobic D-hydrophilic

Karen Wright

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How quickly a drug enters your bloodstream also depends on __________.

Jodi Brooks

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Plants do not adapt to their environment because they do not compete for resources. true or false

Donald Ward

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What three things most directly affect carrying capacity?

Ashley Howard

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More than 50% of ecosystems are currently being used unsustainably. true or false

Ralph Lopez

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The competitive exclusion principle states that two organisms cannot fill the same niche. Please select the best answer from the choices provided T F

Bethany Evans

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The difference between protostomes and deuterostomes is _____. protostomes have only an ectoderm and endoderm protostomes have only a mesoderm protostomes develop a mouth first and then an anus protostomes develop an anus first and then a mouth

Rodney Fox

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Which is a key element found in all carbohydrates, lipids, proteins, and nucleic acids? A. ammonia B. carbon C. nitrogen D. legumes

Nicholas Rivera

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The stomach uterus and bladder are lined with what

Annie Barnes

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Ep-27 carbon monoxide poisoning is sometimes mistakenly identified as what?

Karen Wright

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An organism's trophic level refers to _____.

Nicholas Rivera

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Sublimation is the opposite of deposition just as evaporation is the opposite of? A. Fusion B. Transpiration C. Freezing D. Condensation

Brandon Scott

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Why do complex organisms need specialized cells?

Theresa Perry

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About 60 percent of all known galaxies are classified as ______ A. Spiral galaxies B. Elliptical galaxies C. Irregular galaxies D. Binary systems

Ramon Kelly

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Which best describes the structure of a phospholipid? a glycerol molecule between two fatty acid chains a lipid molecule with a polar head and a tail a phosphate molecule joined to a fatty acid a nonpolar molecule attached to a fatty acid

Eric Morgan

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When a plant opens and closes its stomata, it is maintaining _____. A) sugar B) chemical transmitters C) homeostasis D) tropism

Chelsea Hayes

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Which of the following types of carbon fixation occurs in most plants? a. C3 b. C4 c. CAM d. none of the above

Ronald Miller

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Which of the following structures is most likely to be found in an autotrophic protist? a. A gullet b. A chloroplast c. A food vacuole d. A plasmodium

Theresa Perry

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What is the mass number of an ion with 105 electrons, 159 neutrons and a +1 charge? Express your answer as an integer.

Ross Pratt

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Abyssal plains are very flat features that form when_____.

Samantha Barber

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EEG is to CT as: x-ray photographs is to recordings of brain waves recordings of brain waves is to x-ray photographs radioactive emmissions is to recordings of brain waves recordings of brain waves is to radioactive emissions

Ramon Kelly

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This chart shows the types of ground tissue and their functions. mc012-1.jpgmc012-2.jpg Which row (A, B, C, or D) best matches each ground tissue with its function? A B C D

Mindee Nelson

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Which best describes the flow of genetic information. A= genetic information is carried only by dna. B= genetic information flows from Gene to allele to protein. C= genetic information flows from dna to rna to protein. D= genetic information cannot be transmitted outside the nucleus

Jeremy Wood

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Which is not a guideline for avoiding hip dislocation after replacement surgery?

Timothy Norman

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In Figure 23–3, which letter points to the structure through which water is lost during transpiration? (1 point) A D E F Download jpg

Megan Page

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The biggest threats to Christmas Island crabs during their annual migration are _______. a. dogs c. automobiles b. cats d. fences

Kyle Mckinney

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The base sequence ACTGAC A) could occur in both DNA and RNA. B) could occur in DNA but not in RNA. C) could occur in RNA but not in DNA. D) could occur in neither DNA nor RNA.

Cynthia Baker

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The mitotic spindle is a microtubular structure that is involved in _____

Megan Page

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Ethane, with the chemical formula C2H6 , is an example of _____. a kind of coal a hydrocarbon an isotope a gasoline

Whitney Matthews

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Which of the following is not true about Polar bears?

Kathy Robinson

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Gel electrophoresis separates dna for profiling based on ______________.

Mindee Nelson

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Which processes produce carbon dioxide as a waste product? A. the Krebs cycle and the electron transport chain B. ethyl alcohol fermentation and lactic acid fermentation C. lactic acid fermentation and the Krebs cycle D. ethyl alcohol fermentation and the Kre cycle

Nicholas Rivera

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Which texture best describes an igneous rock that formed deep underground?

Chelsea Hayes

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An earthquake is best described as a Short term Long term Global Climatic

Victoria Fowler

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Which explanation is most likely the reason for the evolution of a larger brain in humans? The size of the human brain increases the more it is used. A larger brain allows humans to solve complex problems. The size of the human brain has changed randomly over time due to mutations. A large brain increases humans’ ability to fight and survive disease.

Dana Keller

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Which statement describes a step in DNA replication? The double helix unwinds and each strand forms a template for a new strand. The paired bases release many types of proteins. The DNA is cut into pieces using polymerase enzymes. New bases are built by the original strands.

Daniel King

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During a quiet eruption, a lava flow may set fire to and then bury everything in its path. true or false

Jessie Thompson

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Traditional classifications tended to take into account primarily_____. a) extinct organisms b) RNA similarities c) DNA similarities d) generals similarities in appearance

Ramon Kelly

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Which of these statements is correct with respect to osteoclasts?

Ramon Kelly

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The development of secondary primary sex characteristics cause girls to look like women and boys to look like men.

Kevin Sutter

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Which of the following accurately describes a step within transcription? A. DNA polymerase uses one strand of RNA as a template to put together nucleotides. B. The RNA strand is produced within the cytoplasm. C. The DNA strand is used as a template for which a complementary RNA strand can be produced. D. The RNA strand forms a template by which DNA can be built

Craig Stewart

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Which feature do prokaryotic and eukaryotic cells share? A) nucleolus B) cytoplasm C) nuclear membrane D) membrane-bound organelles

Jeffrey Rodriguez

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How do passive transport and active transport differ? Is osmosis an example of passive transport or active transport? Why?

Kevin Sutter

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Which statement describes decomposers?. . . . A.Decomposers are those organisms that recycle matter in the ecosystem.. . . . B.Decomposers are insignificant organisms in the ecosystem and can be absent in some ecosystems.. . . C. Decomposers can produce their own source of energy and can sometimes act as primary producers. .

Tara Andrews

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Contrast disruptive and stabilizing selections

James Washington

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Which of the following statements about the tundra is not true? a. Tundra means “treeless land.” b. Plants and animals in the tundra have adapted to the extreme climate. c. Temperatures in the tundra range from extreme highs to extreme lows. d. The alpine tundra can be found on mountaintops.

Mindee Nelson

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Skin color, fur color, and height are examples of which inheritance pattern?

Kaitlin Dean

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Changes in the trilobite exoskeleton can be attributed to ____..

Theresa Perry

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Which substance is the most acidic?

Nicholas Rivera

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