SantabeHub
Home
Search
Search
Biology Questions
BIOLOGY
HIGH SCHOOL
3' GCTTAGTCCG 5' Which of the following nucleotide base sequences complements the section of DNA modeled above?a. 3' TAGGCTGAAT 5'b. 3' CGAATCAGGC 5'c. 3' CGTTAACGAG 5'd. 3' GCTTAAGTCA 5'
BIOLOGY
HIGH SCHOOL
Looking at a cell under a microscope, you note that it is a prokaryote, how do you know?A) The cell lacks cytoplasm. B) The cell lacks cell membrane.C) The cell lacks nucleus.D) The cell lacks genetic material.
BIOLOGY
HIGH SCHOOL
If a segment of one side of a DNA molecule has 500 adenine bases, how many thymine bases does the other side have?250500You can't tell from this data.0
BIOLOGY
HIGH SCHOOL
Which of the following statements best describes the major difference between anaphase of mitosis and anaphase I of meiosis? In anaphase I, homologous pairs are separated but sister chromatids stay joined together. In anaphase, spindle fibers pull each set of sister chromatids to opposite ends of the cell. In anaphase I, sister chromatids are separated, forming a total of four haploid cells. In anaphase, tetrads of homologous pairs are separated to form four new nuclei
BIOLOGY
HIGH SCHOOL
What does a nucleotide consist of?a polymer of nitrogenous basesnitrogenous bases and sugarsugar and phosphatesa nitrogenous base, a sugar, and a phosphate
BIOLOGY
HIGH SCHOOL
The cellular process of creating two new DNA molecules from one original copy is called replication. Which statement is the BEST description of this process? A) DNA opens up and RNA copies it. B) DNA opens up and completely unwinds to make two new molecules. C) DNA opens up and each strand is used as a template for a new strand. D) RNA opens up the DNA and uses each strand as a template for a new strand.
BIOLOGY
HIGH SCHOOL
Which observation proves that a cell is a eukaryote?A. The cell has a cell membrane.B. The cell contains a nucleus.C. The cell uses ribosomes to create protein.D. The cell contains DNA
BIOLOGY
HIGH SCHOOL
Some fish and amphibians have _____, which detect electrical fields that help them navigate through dark, murky waters.A. photoreceptorsB. olfactory receptorsC. electroreceptorsD. thermoreceptors
BIOLOGY
HIGH SCHOOL
Roundworms have mechanoreceptors called _____ on external bristles.A. tentaclesB. setaeC. nephridiaD. whiskers
BIOLOGY
HIGH SCHOOL
Darwin hypothesized that new species could appear gradually through small changes in an ancestral species.what experiment did he conduct to test this hypothesis?
BIOLOGY
MIDDLE SCHOOL
How do the atmospheric conditions near the beginning of Precambrian time contrast with the atmospheeic conditions that are present now? Which organism is largely responsible for this change?
BIOLOGY
HIGH SCHOOL
Bacteria from the soil absorb nitrogen from the air and convert it into ammonium. This is an example of _____.the hydrologic cyclenitrogen fixationassimilationcarbon cycle
BIOLOGY
HIGH SCHOOL
Most wind erosion is caused by _____.
BIOLOGY
HIGH SCHOOL
Which protein serves as a chemical messenger?hemoglobinactinmyosininsulin
BIOLOGY
HIGH SCHOOL
A depositional feature that forms where a stream enters a lake or an ocean is a A. natural levee. B. meander. C. delta. D. distributary.
BIOLOGY
HIGH SCHOOL
Which of the following is typically included in the count of total carbohydrates on a nutrition label?a. sodiumb. proteinc. fiberd. cholesterol
BIOLOGY
HIGH SCHOOL
In the alternation of generations life cycle the zygote undergoes mitosis to become aA. gametophyte.B. sporophyte.C. spore.D. gamete.
BIOLOGY
HIGH SCHOOL
Nitrogen is important to life because it is part of _____.DNA, amino acids, and proteinsplant photosynthesisthe air we breathelightning storms
« Previous
Page 57
Next »