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.
Which best illustrates the result of the process of meiosis? A pea plant has the same flower color as its parent plants. A daughter looks different from both her mother and her father. A cheetah cub has very similar fur to its mother. A Labrador puppy looks exactly like its father.
Whales have what seem like remnants of a pelvis and femur, as shown here. What are these structures an example of?
Which hormone is responsible for regulating the sleep cycle in your body? Select one of the options below as your answer: A. Melanotropin B. Melatonin C. Adrenaline
The product of the p53 gene _____. the product of the p53 gene _____. slows down the rate of dna replication by interfering with the binding of dna polymerase
Which scientist proposed a link between contaminated water and cholera A.Pasteur B. curie C. salk D.koch
Genetic drift tends to occur in populations that (1 point)are very large. are small. are formed from new species. have unchanging allele frequencies
Why do naturalists suggest that we plant more trees? Plants use CO2 but do not release any, thus maintaining a balance of CO2 in the atomsphere. Plants release CO2 through respiration and use it for photosynthesis, thus decreasing the amount of CO2 and maintaining its balance in the atmosphere. Plants do not use any CO2, thus maintaining low levels of CO2 and balancing its level in the atmosphere.
Scientific evidence is most likely to be consistent if it is based on data from A) random samples B) uncontrolled experiments C) biased experimental designs D) small data samples
Which object reflects light with the longest wavelength? a yellow book a violet flower a blue paper a green leaf
Which of the following statements is most accurate concerning the founder effect? A. It increases genetic variation B. It is not an example of genetic drift C. It results when a small population breakers away from a larger one D. It only occurs amongst the amish
Which of the following is not characteristic of marshes? a. shallow water b. frequent floods c. acidic groundwater d. herbaceous plants
Which is NOT a shared characteristic of all chordates? A ventral, solid nerve cord A notochord Pharyngeal slits
Why did dna technology lead to more use of cladistics?a. it showed that the linnaean system was the most accurate.b. it changed ideas about which animals were closely related.c. it proved that eukaryotes formed from endosymbiosis.d. it showed that there are three domains and six kingdoms?
Which adaptation makes bipedalism possible? A.opposable digits B.large brain C.foramen magnum in back of skull D.elvis rotated inward
Matter can recycle through the biosphere because: A) matter is passed out of the body as waste. B) matter is assembled into chemical compounds. C) biological systems do not use up matter, they transform it. D) biological systems use only carbon, oxygen, hydrogen and nitrogen
What is true about dissimilar organisms such as a cow and a yeast? A. They are not related at all. B. Their degree of relatedness cannot be evaluated. C. Their degree of relatedness can be estimated from their genes. D. They can interbreed and thus are the same species.
When the body receives stimuli, which structure typically processes the stimuli? sensory nerve cell motor nerve cell brain meninges
Common law refers to laws determined through A due process. B precedent. C the rule of law. D the separation of powers.
Which of the following accurately describes the life cycle of most gymnosperms? a. Seed cones contain ovules. b. Germinated seeds are haploid. c. A pollen tube is used to prevent the fertilization process. d. Pollen grains undergo meiosis to form egg cells.
How does the anaphase stage differ in the two phases of meiosis?. . Select one of the options below as your answer:. . . . A.. Anaphase I separates sister chromatids and anaphase II separates homologous chromosomes into daughter cells.. . . . . B.. Anaphase I has homologous chromosomes attached to spindle fibres and anaphase II involves separation of these homologous chromosomes.. . . . . C.. Anaphase I separates homologous chromosomes and anaphase II separates sister chromatids into daughter cells.
Why do some plants in the tundra retain their dead leaves instead of shedding them? a. The plants absorb the nutrients in the dead leaves. b. The dead leaves insulate new buds from the cold. c. The dead leaves protect them from predatory insects. d. The dead leaves help them survive long periods of drought.
A patient is in need of hydration. Which type of solution are the patient’s cells most likely in? hypotonic hypertonic isotonic osmotic
Wind blowing sediment against rock or land area, or sandblasting is called a. abrasion c. deflation b. deposits d. picking up