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Biology

Missense, nonsense, and silent mutations are examples of which type of mutation? A) substitution B) insertion C) deletion D) replication

Ralph Lopez

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Identify the two figures that developed the five-step process known as the scientific method. a. Francis Bacon and Rene Descartes b. Galileo Galilei and Copernicus c. Sir Isaac Newton and Robert Boyle d. Marie Curie and Mary Wollstonecraft

Deborah Edwards

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A single atom of an element has 11 protons, 11 electrons, and 12 neutrons. Which element is it? A.V B.Na C.Mg D.Se

Caroline Campbell

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A liquid changes rapidly into a gas at the liquid’s a. boiling point. c. melting point. b. freezing point. d. condensation point.

Ralph Lopez

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Which of the following would most likely cause geographic isolation? A. volcanic eruption B. a large tree falling C. widening of a lake D. a forest fire

Brandon Scott

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Communication and transportation have improved as a result of scientific advancements. Please select the best answer from the choices provided T F

Amanda Johnson

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G select the true statements about protein secondary structure. the β-pleated sheet is held together by hydrogen bonds between adjacent segments.the secondary level of protein structure refers to the spatial arrangements of short segments of the protein.

Rodney Fox

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The _______ is most likely to be concerned with the overuse of water.

Ashley Howard

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Which of the following could be a biological hazard pesticide fish bone hepatitis a or santizer

Kyle Mckinney

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The Great Pacific Garbage Patch will be difficult to physically clean up because _______.

Daniel King

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In the __________ phase of gastric secretion, chyme is moved into the duodenum. in the __________ phase of gastric secretion, chyme is moved into the duodenum. reflux gastric phase cephalic intestinal

Megan Page

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Which of the following accurately describes the process of translation? A. The process continues until a ribosome reaches UAA, UAG, or UGA. B. Each codon calls for a specific nucleotide. C. Each tRNA molecule has a codon that matches an mRNA anticodon. D. The process continues until a ribosome reaches AUG.

Jeffrey Rodriguez

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Which process adds new genes to a gene pool? A.gene flow B.extinction C.mitosis D.genetic drift

Alexa Spicer

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Which layer of the epidermis will be supplied with the highest levels of oxygen from the blood? which layer of the epidermis will be supplied with the highest levels of oxygen from the blood? stratum basale stratum corneum stratum spinosum stratum granulosum?

Annie Barnes

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Which of these best describes genetic drift? A) The movement of alleles between population B) Random fluctuations in the gene frequencies within a population Eliminate C) A planned method to reduce the number of inferior genes in a population D) The combining of alleles to create more genetic variations within a population

Zach Chandler

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WILL GIVE A BRAINLEST Farmers let some land lie fallow in order to _____. reduce labor costs reduce the food supply restore soil fertility increase food prices

Daniel King

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Select all that apply A virus is a free living cell always parasitic contains DNA and RNA cannot reproduce on their own

Megan Page

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How do new cells form in plants and animals?

Megan Page

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Which of these is the foundation for relative dating? a. Earth is very old. b. Deeper rock strata are older. c. Radioisotopes decay at a constant rate. d. Organisms can be closely related to each other.

Bethany Evans

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13 true or false: you can slow down to look at a collision if you're curious.

Jessie Thompson

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1. The group that includes gibbons and humans but does not include tarsiers is_________ a. primates. b. anthropoids. c. hominoids. d, hominines. 2. Researchers have concluded that the Dikika Baby was most likely a better climber than modern humans. This evidence may suggest that Dikika Baby’s relatives may have spent part of their time a. using tools. b. in trees. c. hunting in groups. d. waging war on other troops.

Justin Parker

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13C and 14C are isotopes of 12C, which has 6 electrons, 6 protons, and 6 neutrons. What is the arrangement of subatomic particles in 14C? 6 electrons, 7 protons, and 6 neutrons 6 electrons, 7 protons, and 8 neutrons 6 electrons, 6 protons, and 8 neutrons

Kathy Robinson

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How does capillarity help sustain life?a.Plants use capillarity to move water from their roots to their leaves.b.Capillarity allows water to form droplets.c.Animals rely on capillarity to maintain their body temperatures.d.Water’s capillarity allows many different substances to dissolve in water.

Kevin Sutter

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Which is the end result of photosynthesis? the production of chlorophyll the trapping of energy from the sun the production of glucose the trapping of thylakoids

Bethany Evans

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The same agricultural practices are used in every country of the world. Please select the best answer from the choices provided T F

Jodi Brooks

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Because plate movements have raised ancient sea floors above sea level, a. there is less coral than there used to be. b. coral reefs are only found in the deep ocean. c. limestone that began as coral reefs can be found on the continents. d. all remains of ancient coral reefs have been lost

James Washington

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What is the role of enzymes inside a lysosome? A) They send signals to other parts of the cell. B) They move molecules to other parts of the cell. C) They break down large molecules. D) They form sacs from other membranes.

Nicholas Rivera

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The urethra is a tube that carries both semen and urine through the penis. true or false

Alexa Spicer

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Which of the following is the only marsupial found in North America?

Melissa Norris

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Developing countries tend to have more people in urban areas than rural areas. True or False?

Rodney Fox

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Which describes the correct pairing of DNA bases? A. T with A, and C with G B. T with C, and A with G C. T with T, and C with C D. T with G, and A with C

Cynthia Baker

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Which of the following best describes a human egg cell? (2 points) A haploid cell formed in the female uterus A diploid cell formed in the female uterus A diploid cell formed in the female ovary A haploid cell formed in the female ovary

Mindee Nelson

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The apex is located at the A. cementoenamel junction. B. cervical neck. C. tip of the root. D. apical foramen.

Daniel King

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Which of the following is NOT true about performing biological investigations? A. Reading and understanding the steps before conducting an experiment is necessary for safety. B. Scientists are trained to conduct their investigations safely. C. The metric system and the revised SI are based on multiples of 10. D. Most scientists do not use the metric

Kyle Mckinney

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After 12 pcr cycles how many dna strands would be available?

Caroline Campbell

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How is water transferred from the air to the ground? a. transpiration b. precipitation c. evaporation d. all of the above

Cynthia Baker

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All life-forms on earth are located in the ____. a. Geosphere b. Biosphere c. Atmosphere d. Hydrosphere

Carlton Burgess

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Intracellular digestion occurs when food is digested A) inside specialized cells B) outside cells in a digestive system C) in the spaces between cells D) outside the body

Nicholas Rivera

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What allows Nancy to run without watching her feet and hit a baseball without focusing on the bat ?

Ronald Miller

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Air pollution affects everyone equally. True or false?

Rodney Fox

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Solve for m: 18d – 2m + 9k < 5k + 10. A- m > –7k – 9d + 5 B- m < –7k – 9d + 5 C- m > 2k + 9d – 5 D- m < 2k + 9d – 5

Eric Morgan

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Which is a possible reason for the transition of algae from unicellularity to multicellularity?

Whitney Matthews

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Changes in the trilobite exoskeleton can be attributed to ____. a. changing environments c. inter-species mating b. competition for survival d. both a and b

Chelsea Hayes

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What is created when cemical reactions join atoms together

Ashley Howard

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Which is least likely a description of the central nervous system (CNS)? A.The CNS processes information that is received from the stimuli receptors. B.The CNS is found in the central area of our upper body, close to the heart. C.The CNS sends out information so that the body can react appropriately to stimuli. D.The CNS is composed of the brain and the spinal cord.

Chelsea Hayes

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Which of these nutrients can be found in all organic compounds *nitrogen *calcium *carbon OR *phosphorous?

Justin Parker

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True or False? Convection currents produce the heat in the Earth’s interior.

Jeremy Wood

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Which statement is a valid claim that could be made using the data in the graph

Ramon Kelly

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Which describes an altocumulus cloud? a. high, feathery cloud c. low storm cloud b. puffy mid-level cloud d. high cloud made of ice crystals Please select the best answer from the choices provided

Whitney Matthews

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Which molecules help control movement of substances through cell membranes? A. carbohydrates B. ATP C. DNA D. proteins

Blair Lewis

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