Biology

Biochemically speaking, what causes anxiety

cortisol is at least one of em... your second question is interesting... release of endorphins is another one... but still interesting. our biofeedback loops work in strange ways with our blood

Is the hen's egg that we eat technically an unfertilized embryo sac

Yes, Hens will still lay eggs if a male isnt around so it has the ingredients to make a chick, but it remains infertile hope this helped :D

Biology honors questions!! PLEASE HELP A FEW QUESTIONS (:

Explain how geographic isolation can lead to allopatric speciation. Explain how reproductive isolation can lead to sympatriic speciation. What are two short comings of the biological species concept?

What evidence is there that cephalization is present in gastropods

a. well developed head region b. none of these c. all of these d. tentacles and eyes e. cerebral ganglion I think its either (c) or (d) but Im not sure-I think its this one: c. all of these

Why white blood cell is higher in time of infection

White blood cells are the cells that fight infection and so when there is an infection in your body, your body produces more of them

Help with tay sachs pedigree chart.

1. a male and a female marry. neither person has tay sachs. they constitute the first gen. 2. these parents produce one female child. she does not have tay sachs. constitute 2nd generation. 3. another

For succession to begin, does the area need to be destroyed my a natural disaster

just forgotten about? Thanks!-Pretty much. Primary succession occurs after volcanic eruptions and creation of islands due to volcanoes as well. Within primary succession, there is no soil left behind

Circulatory system question

Below is a chart listing several factors that involved in the circulatory system and heart function. Compare these factors in a healthy and unhealthy individual.Fill in the outside blanks with the wor

Why the blood entering the efferent arteriole is thicker

Why the blood entering the efferent arteriole is thicker than the blood entering the afferent arterioles ? The explanation is like as plasma has entered the tubule, but still contains oxygen that is

What Phylum do vertebrates belong to

Vertebrates belong to the phylum vertebrata, and its sub-phylum is chordata i.e pisces, amphibia,reptilia,aves, mammalia.-vertebrates belong to the phylum chordata

What does this mean...

The sea horses have a type IV marine teleost kidney.This means that in the sea horse kidney the head kidney is not discernible from the trunk kidney. I have to summarize it for my Bio project, but I

Of the following, what do mitchondria and chloroplasts have in common

A. They both produce ATP B. They both contain DNA C. They both contain ribosomes D. Both A and B. E. A, B, and C are correct.-E. All the listed choices are correct.-A, because ATP stands for Adenosine

Describe how anelids are more complex than a flatworm

Anelids have a different body structure. Its divided into pieces, a abdominal structure, head and tail. a flat worm is not.-Earthworm is schizocoelomate, metamerically sengmented with complex circulat

Which kind of tonicity is this

There is an apparatus consisting of two tubes with a semi-permeable membrane between the two sides. The membrane is permeable by glucose and water but not sucrose. In the right tube, there are 2M sucr

What is biochemical homology

please help its for biology homework-Biochemicals coming from the same origin. Like Aidan and Claydan: same origin, same meaning This is opposed to biochemicals which are the same but come from diffe