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Biology

A home heating system is to thermostat as the human body is to A. hormone-receptor complex. B. reproductive system. C. hypothalamus. D. target cells.

William Cain

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Which of the following statements about biogeochemical cycles is not true? a. Biogeochemical cycles include living and nonliving elements. b. The rock cycle is a biogeochemical cycle. c. Biogeochemical cycles are an important part of the Earth system. d. Carbon, nitrogen, and oxygen cycles are biogeochemical cycles.

Blair Lewis

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Why do birch trees have black streaks on their trunk?

Ronald Miller

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A bird that preys on moths is introduced to the habitat with moths and trees like the ones shown below. What will most likely happen to the population of moths in this habitat?

Curtis Rhodes

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Which of these statements is true of the hypothalamus? A)It controls emotional responses and provides information on equilibrium. B)It contains the cardiac and vasomotor centers that regulate heartrate and blood pressure. C)It controls the autonomic nervous system and regulates hunger and thirst sensations. D)It contains centers that regulate sneezing, hiccupping, and coughing.

Jodi Brooks

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Which of the following cases represents the phenomenon of contact inhibition? a. Healing of an injury b. Growth of a tumor c. Tumor metastasis

Kyle Mckinney

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Most metamorphic processes take place A. several hundred kilometers below Earth’s surface. B. a few kilometers below Earth’s surface. C. just below Earth’s surface. D. on Earth’s surfac

Rodney Fox

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A rock that is trapped in the orbit of the Sun A) Comet B) Asteroid C) Meteoroid

Caroline Campbell

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Earth’s magnetic field results from movements in the a.mantle. b.outer core. c.inner core. d.crust.

Jennifer Patterson

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Explain how compaction is important in the formation of coal

Heather Maxwell

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After completing meiosis II, human sex cells have a total of _____ chromosomes

Theresa Perry

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Desalination is needed in order to obtain potable water from _____. A. aquifers B. glaciers C. lakes D. oceans

Dana Keller

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Which of the following statements about rural communities is true? a. Rural communities can support any population size. b. More people in the United States live in rural communities than they did in 1900. c. Rural communities were built based on the location of available resources. d. People in developed countries are moving back to rural communities...

William Cain

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Carbon fixation occurs during the light reactions.

Victoria Fowler

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Anna waters her plants with salty water to help them grow better, is her thinking correct? A: No. The salt will interfere with absorption. B: No. The salt will cause the water to diffuse out of the plants and they will wilt. C: Yes. Salt will increase the water uptake of the plants. D: Yes. Salt will provide the plant with sodium and chloride ions.

Craig Stewart

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Which hormonal deficiency causes breast atrophy in female clients?

Theresa Perry

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Which of the following steps happens first during transcription? A. RNA polymerase reaches the end of the gene. B. RNA polymerase reaches the beginning of a gene. C. RNA polymerase pulls apart the double helix. D. RNA polymerase produces mRNA from DNA.

Jessie Thompson

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Reef producing coral are called _______.

Daniel King

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Which level of biological classification do Mammalia and Hominidae represent, respectively?

Timothy Norman

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Which wavelengths of light drive the highest rates of photosynthesis? select the two best answers?

Eric Morgan

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Which kinds of cells are always single-celled?

Victoria Fowler

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Which of the following are not characteristics of the cell wall? Select all that apply. cellulose and chitin hydrophillic and hydrophobic structures found in cells of fungi and algae double-layered membrane

Caroline Campbell

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Which of the following is responsible for deep ocean circulation? Question 5 options: A. wind B. Coriolis force C. density differences D. friction

Kathy Robinson

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In order for a population to survive, sexual reproduction must produce A) more females than males. B) more males than females. C) more offspring that can survive and reproduce. D) a large number of self-fertilized individuals.

Melissa Norris

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Emotions can lead one to engage in maladaptive behavior when they ___________. A. increase one's desire to be kinder toward others B. motivate one toward positive action C. lead one to effectively communicate thoughts and feelings D. cause one to want to become physically violent toward another

Ronald Miller

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Explain why greenhouse gases are essential and yet a concern?

Craig Stewart

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Botulinum toxin binds to receptors present at the axon terminal in order to enter the neuron. what vesicular transport process do you think is involved in the toxin entering the neuron

Whitney Matthews

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What are small unopened or plugged sebaceous glands that occur in a newborn’s mouth and gums?

Whitney Matthews

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In the ocean winds determine what?

Whitney Matthews

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Which organism is an example of a producer? moth mushroom rose cheetah

Megan Page

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Which activity stresses the demand side of water supplies? drought overpopulation flood pollution

Deborah Edwards

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WILL GIVE A BRAINLEST Why are scientists concerned that currently unknown medicinal plants may never be discovered? Current technology is unable to detect their medicinal benefits. Habitats are being destroyed faster than the plants can be discovered. Domestic versions of the same plants will outcompete them. The plants’ habitats are so remote that they cannot be reached.

Jessie Thompson

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Sunlight is a form of energy called _____.

Justin Parker

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A virus is referred to as a particle rather than a cell because structurally it is a A) RNA core in a carbohydrate envelope. B) nucleus surrounded by a protein coat. C) plasmid of DNA surrounded by a capsid. D) RNA or DNA core surrounded by a protein coat.

Jeffrey Rodriguez

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During fermentation, the conversion of pyruvate into lactic acid requires... a. NADH b. carbon dioxide c. ATP d. oxygen gas

Caroline Campbell

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The water on the Earth today has been sustaining life for millions of years. a. True b. False

James Washington

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Where does a young marsupial develop

Alexa Spicer

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Which of the following types of stars is the coolest? See picture below A B C D Download jpg

Samantha Barber

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Which phase occurs directly after S phase? A. Cytokinesis B. G2 C. G1 D. M phase

Whitney Matthews

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Which of the following jobs does not require good swimming ability? Marine biologist Navy Seal Lifeguard Water quality technician

Heather Maxwell

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Which would not form an organic fuel? bones shale plant roots trees

Donald Ward

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Sb-16 what action should be taken when nearing a bend in a narrow channel?

Craig Stewart

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The rate of weathering depends upon the area's ____. a. oxygen c. water b. climate d. soil

Brandon Scott

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Which best describes how a vaccine works? answer apex?

Amanda Johnson

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Which of the following is not a form of energy

Justin Parker

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Why do sex linked traits follow different patterns of inheritance than other traits ? Download png

Nicholas Rivera

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Which list below describes the path of ocean water through the water cycle? Evaporation, condensation, precipitation, runoff Evaporation, precipitation, runoff, ocean storage Transpiration, precipitation, runoff, ocean storage Condensation, precipitation, runoff, groundwater

Melissa Norris

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The organisms found in rivers and streams vary based on location. true or false?

Cynthia Baker

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Ocean tides result largely from the gravitational attraction of the A. core of Earth. B. sun. C. closest neighboring planets. D. moon. I think it's the moon... Am I wrong?

Ross Pratt

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The initial period of population growth for a species in an environment is _______. a. linear b. exponential c. slow d. negative

Samantha Barber

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