Study and Learn with 1000s of Biology MCQs
The relative concentration of hydrogen to hydroxide ions is represented by the _____ scale. ConcentrationHydroxylhydrogenpH Correct Answer pH In the early _____ , scientists came up with the pH scale 2000s1900s1800sNone of these Correct Answer 1900s the term pH symbolizes…
In eukaryotic cells, DNA is contained within a chamber called a nucleus that’s separated from the cytoplasm by a membrane called the _ nuclear envelopecell envelopeplasma envelopeNone of these Correct Answer nuclear envelope The nucleolus produces _ which move out…
_ figured out the structure of a nucleic acid Born and oppenheimerDarwin and pasteurJames Watson and Francis CrickWilliam hooks and matthias schleiden Correct Answer James Watson and Francis Crick James Watson and Francis Crick figured out the structure of a…
A _____ is a good example of an animal with a nerve net.starfishsharkHumancow Correct Answer starfish Animals with a defined head (such as worms, insects, reptiles, mammals, and birds) possess a _____ -part nervous system 3526 Correct Answer 2 _____…
Nerve impulses pass through a neuron in about _ seven millisecondsseven microsecondshundred milliseconds2 nanoseconds Correct Answer seven milliseconds When a neuron is inactive, just waiting for a nerve impulse to come along, the electrical difference across the nerve cell membrane…
MCQ# 1: Darwin concluded that biological evolution occurred as a result of _ selection naturalArtificialBoth of theseNone of these Correct Answer natural MCQ# 2: _ selection is the theory that in any given generation, some individuals are more likely to…
_ is a disease caused by uncontrolled cell division AIDScancersyphillisosteoarthritis Correct Answer cancer a mass of cells accumulated at a place in body resulting in cancer is called? tissueTumorpileorgan Correct Answer Tumor Tumor that is more likely to spread and…
Functions of muscles include __ Digestion of foodHelp you Standing uprightmovementAll of these Correct Answer All of these __ is the squeezing of food down through the esophagus, stomach, and intestines churningPeristalsisDigestiondefecation Correct Answer Peristalsis the parts of the muscle…
__ is a protein that breaks down one of the chemicals found in bacterial cell walls ValineamylaseLysozymecollagen Correct Answer Lysozyme _ in your blood binds iron so microbes don’t have enough iron for their growth. TransferrinValineAmylasehistidine Correct Answer Transferrin _…
The process of mitosis occurs in _ phases 25411 Correct Answer 4 Final phase of mitosis is? KaryokinesisKrebs cyclecytokinesisglycolysis Correct Answer cytokinesis In _, The chromosomes of the cell get ready to be moved around by coiling themselves up into…
