StudyHub
Home
Search
Login
Search
Biology
Biology
High School
Dr. Ignaz Semmelweis was a Hungarian doctor investigating the deaths of women in hismaternity ward from childbed fever. Which statement below is a valid hypothesis made byDr. Semmelweis?O Doctors caused childbed fever.Midwives caused childbed fever.If doctors disinfect hands before delivering babies, then there will be less childbed fever.o If a woman goes into the hospital then she will die of childbed lever.
Biology
High School
Choose appropriate words to complete the paragraph below to explain the general trends shown in a predator-prey graph.Breathe, Muscles, Oxygen, Lactic, anaerobic respiration, Oxygen aerobic respiration, Break downAn increase in the prey population provides more food for the _________ , allowing more to survive and _________ . This is turn results in an _________ in the predator population. The larger predator population eats more prey organisms, causing a _________ in the prey population. The death rate of the prey is larger than its _________ rate. The reduced prey population can no longer support the large predator population. _________ for food increases, resulting in a _________ in the size of the predator population. Reduced predator numbers results in less of the prey population being killed. More prey _________ and reproduce so the prey population _________ again.
Biology
High School
How does latitude affect a climate zone?A. Climate zones at high latitudes are cooler because they are closer to the equator.B. Climate zones at high latitudes receive a lot of precipitation because they are farther C. from the equator.D. Climate zones at low latitudes receive little precipitation because they are closer to the ocean.
Biology
College
Assuming that you observed similar patchy bacterial growth pattern in plates "B-Amp, phage" and "C-LB, phage". The T4 phages greatly affected the growth of E. coli strain CR63 in the LB plate ("C-LB, phage" plate), creating a patchy bacterial growth pattern similar to the expected result in the ampicillin plate of strain BE with phage ("B-Amp, phage" plate). Besides experimental errors, describe the possible reasons why the bacterial colonies were isolated in these two plates. "B-Amp, phage" Plate (strain BE)?
Biology
High School
Sickle-cell anemia is caused by a mutation that changes the second nucleotide of the codon from GAG to GUG. This results in a change of the amino acid from glutamic acid to valine. If the mutation affected the third nucleotide of the codon and changed GAG to GAU then the amino acid would change from a glutamic acid to aspartic acid. Would you predict this change to have the same effect
Biology
College
what is the source of food for germinating seed ?
Biology
High School
Protects the cell and controls what enters and leaves the cell
Biology
High School
Phospholipids are ____________, meaning they have hydrophobic and hydrophilic sectionsA. HydrogenatedB. AmphipathicC. SaturatedD. Glycogenic
Biology
College
Please help please ???? I need help lol
Biology
High School
If something is tucked in, this means it iscovered with shellsfolded up and smallimmersed in waterin a snug or hidden place
Biology
High School
7. Why are people from Pacific Islandnations likely to become environmentalrefugees?A. Because of sea level rise due toclimate changeB. Because the fish populations theysurvive on are diminishingC. Because they ve degraded theirIslands and can no longer grow foodD. Because large factories there havecontaminated the soil, increasing cancersand other health problems
Biology
High School
What does the Hardy-Weinberg principle relate to?
Biology
High School
Which of the following materials has the highest porosity?O A. AsphaltOB. ConcreteOC. ClayOD. Sand
Biology
College
Which type of restriction enzyme is most often used in biotechnology research due to its specificity?A. Type 1B. Type IIIC. Type IVD. Type 11
Biology
High School
Which of the following describes a solution that contains a buffer? A. Citric acid is added to the solution, but the pH of the solution doesnot change.O B. Distilled water is added to thedoes not change.solution, and the ph of the solution C. Acetic acid is added to the solution, and the ph of the solutionbecomes lower.D Sodium hydroxide, a base, is added to the solution, and the pH ofthe solution becomes higher.
Biology
High School
DNA is very small, one complete turn of a DNA helix is aboutO A. 12 nmB. 3.4 nm.cherC. 1.7 nmokD. 34 nm
Biology
High School
a break in which of the following would cause a secrion of bone to die
Biology
College
phi phi to v di hn phi tri ng khng
Biology
College
Which of the following is a scientific question?
Biology
High School
Which of the following is not a possible source of energy for chemosynthetic organisms?a. oilb. hydrogen sulfidec. methaned. waterPlease select the best answer from the choices providedB D
Biology
High School
In your own words, describe the role of the scientific method in scientific investigation.
Biology
College
Surface area te volume ratio plays a vital role in . growth rate of organisms B. exchange of materials between organisms and their environment C. the life-span of organisms D. efficiency of various systems in organisms
Biology
High School
In mammalian eggs, the receptors for sperm are found in the A) fertilization membrane. B) zona pellucida. C) cytosol of the egg. D) nucleus of the egg. E) mitochondria of the egg.
Biology
College
What is photosynthesis????
« Previous
Page 2
Next »