4,064 Answered Questions for the topic biology

04/30/21

Blood clotting inside a syringe

Can someone explain the mechanism of blood clot formation inside a syringe? Not inside a blood vessel, why does it happen?
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Biology

04/30/21

final in bio in college
I need help, I dont know if I'm doing my math correctly. I have three tests (including the final) that is 55% of my grade. My assignments are 10 percent. Quizzing are 10 percent. The labs are 25... more
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04/29/21

Biology question.....Forgot how I did this how does this answer get to 800?
A test tube is inoculated with 100 cells of a bacterial strain that has a generation time of 30 minutes. The carrying capacity of the test tube for this strain is 6 billion cells. What will the... more
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Biology

04/29/21

What is a mutation
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Biology

04/28/21

Macroevolution occurs quickly and in small populations, and Microevolution occurs over a longer time scale.
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Biology

04/27/21

Consider the following argument:
5 of 5Items5 of 5Items Item 5Consider the following argument:Altruistic behavior in groups of related individuals is most likely driven by kin selection since related individuals... more
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Biology

04/27/21

wolf group hunting
Group hunting improves a wolf’s ability to(1 point) develop its traits. surround prey. sneak up on prey. evade predators.
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Biology

04/27/21

group behavior check
Which piece of evidence would best support the argument for kin selection as a mechanism for the evolution of altruistic behavior?(1 point) a penguin protects its chick from seagulls a clown fish... more
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04/27/21

Pathophysiology Clinical Question about the Brain
A 65-year-old woman presents with a 1-hour history of right-sided weakness and aphasia. An immediate CT scan of the brain is negative.  Where in the brain is the pathology?
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Biology

04/27/21

wildabeests behavior
Herd behavior benefits wildebeests by(1 point) helping individuals find mates. decreasing the chance of spreading disease. increasing the number of resources available. allowing altruistic behavior.
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Biology

04/27/21

most reliable and valid
Which of the following pieces of evidence would be considered the most reliable and valid?(1 point) data collected from a controlled experiment that has been reproduced in several different... more
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04/27/21

Some protists are more closely related to animals, plants, or fungi than they are to each other. What does this suggest about the classification used for members in this kingdom?
I’m a little stuck with this question... we learned about protists today, and i’m not sure how to answer this question.
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Biology

04/27/21

Grade 9 Biology - Body Systems.

 Identify and describe three mechanisms of movement of lymph through the lymphatic vessels
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Biology

04/27/21

INHERITANCE AND PROBABILITY PENNY LAB PLEASE HELP ME
In genetics, when we are trying to figure out how traits may be passed from parents to offspring, probability is an important consideration. If we know a little bit about the trait we are studying,... more
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04/27/21

need good explanation on how i need to solve this question . Help needed

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04/27/21

need good explanation on how i need to solve this question . Help needed

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04/25/21

What are the general steps on isolating fungi from infected plants?
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04/24/21

Anaerobic Respiration
Glucose partially breaks down into pyruvic acid during anaerobic respiration. This then proceeds to form Ethanol and Carbon Dioxide. My question is, what is the faith of the ethanol? Lactic acid in... more
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04/24/21

Is it still considered valid to identify fungal species, specifically Rhizoctonia solani, only microscopically and not molecularly? If so, how do I do microscopical identification?
I am a grade 9 student researcher. I have trouble in this area. Upon reviewing related studies, I found out that most of them identify fungal species molecularly through primers and DNA kits.... more
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Biology

04/23/21

In your lab, you measure the amount of a particular radioactive isotope. Six hours later, only 25% of the original isotope is left. How many half-lives have passed?
A) 1B)2C)3D)4E)5
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Biology

04/23/21

he circulatory and digestive systems interact with each other to help maintain homeostasis in the human body.

Which pair of actions describes how these two systems work together to maintain homeostasis?
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04/23/21

What is the difference in development of natural products as a pure, well-defined substances and as a complex extract?
Differences in development (main question)?Variation in active substances in an extract or always the same?
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Biology

04/23/21

true or false, Alcoholic fermentation explains why your muscles are sore after intense exercise.

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Biology Anatomy

04/22/21

Can someone help me answer these specific questions?

What organ system does rickets affect?  What is the normal function of the organ system and its contribution to homeostasis?  What is altered in individuals that are diagnosed? Describe the... more
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Biology Genetics

04/22/21

How many amino acids are in this protein sequence?
ORIGIN 1 mreivhiqig qcgnqigakf wemigeehgi dlagsdrgas alqlerisvy yneaygrkyv 61 pravlvdlep gtmdsirssk lgalfqpdsf vhgnsgagnn wakghytega elienvlevv 121 rhesescdcl qgfqivhslg... more
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