15 Answered Questions for the topic life science

Life Science Biology Anatomy Physiology


What happens during muscle contraction in a muscle fiber?

I basically want to know what happens microscopically in a muscle fiber when muscle contraction occurs?
Life Science Math Business Sat Math


normal distribution

suppose 16 coins are tossed. find the probability of getting the following result using the binomial probability formula and the normal curve approximation.exactly 4 heads.use the table of areas... more
Life Science Math Business Sat Math


normal distribution

the mean clotting time of blood is 7.45 seconds with a standard deviation of 3.6 seconds. what is the probability that an individual's clotting time will be less than 4 seconds or greater than 9... more


Tomaso Kampanela and Thomas More created their own patterns of “perfect societies”. Why these teachings were named “utopias”?

How do you think can a good peaceful social idea be transformed into something negative in real life?any examples (from world history/movie).
Life Science Anatomy Physiology Zoology


health issue in pakistan

a lot of health issue in Pakistan silent killer called hypertension, rate of hypertension increase day by day which are the root of cardiovascular disease how we control hypertension?
Life Science Biology


Compare and contrast two such stabilizing mechanisms in humans that are under hormonal control and two that are not.

In order to remain healthy, humans must be able to keep their bodies in a stable condition even when the outside environment is very different. Sometimes hormones are used to accomplish this but... more
Life Science Biology


Gamete formation and fertilization in angiosperms

Explain what is different about gamete formation and fertilization in angiosperms (compared to vertebrates) that results in the fruit containing triploid endosperm when triploid tissues are not... more
Life Science Biology


What purpose is served by the pulmonary arteries mammals have versus those of amphibians?

Compare and contrast a mammal’s blood circulation and a frog’s blood circulation that results in only deoxygenated blood in the pulmonary arteries of a mammal but partially oxygenated blood in the... more
Life Science Biology


Mitosis and meiosis in hybrid animals

Consider two closely related species—Species A and Species B. Species A and B will mate with each other in captivity, and often produce healthy offspring. However, the hybrid offspring are usually... more
Life Science


This is an easy one, I'm just bad at math.

If 100 grams of cocoa powder have 430 calories, how many calories do 7 grams of cocoa have?


Jasmine bought two dozen roses for $31.20. How much did she pay per rose?

I have no idea what I am doing....................some please help me
Life Science Science


Dinosaurs became extinct nearly 65 million years ago...

Dinosaurs became extinct nearly 65 million years ago...    Q1: Define mass extinction. An: I got no idea. please help.   Q2: State a type of evidence that suggests dinosaurs once existed. An:... more
Life Science


nitrogen fixing bacteria

 Where does nitrogen fixing bacteria live? Is it root hairs or root nodules?

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.


Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.