Missense, nonsense, and silent mutations are examples of which type of mutation? A) substitution B) insertion C) deletion D) replication
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
A liquid changes rapidly into a gas at the liquid’s a. boiling point. c. melting point. b. freezing point. d. condensation point.
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
Communication and transportation have improved as a result of scientific advancements. Please select the best answer from the choices provided T F
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.
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?
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
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
Select all that apply A virus is a free living cell always parasitic contains DNA and RNA cannot reproduce on their own
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.
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
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.
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
The same agricultural practices are used in every country of the world. Please select the best answer from the choices provided T F
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
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
The apex is located at the A. cementoenamel junction. B. cervical neck. C. tip of the root. D. apical foramen.
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
How is water transferred from the air to the ground? a. transpiration b. precipitation c. evaporation d. all of the above
All life-forms on earth are located in the ____. a. Geosphere b. Biosphere c. Atmosphere d. Hydrosphere
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
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
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
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.
Which of these nutrients can be found in all organic compounds *nitrogen *calcium *carbon OR *phosphorous?
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