ehd123

Plz Help!

Plz Help!

Why would molecules of a heterodimer be stored in different areas of the leaf

muski   1062   N/A

muski

Nicotine vs Acetamiprid?

Nicotine vs Acetamiprid?

why insecticide residuals analysis showed "Acetamiprid" on an insecticide made only from plant extracts among others tobacco.

Why alkaloids from nicotine are interpreted as Acetamiprid?  

What analysis can tell the difference between a synthetic ma

datboililp   721   N/A

datboililp

ending for essay about plant and animal cell?

ending for essay about plant and animal cell?

this is my essay

Cell Lab

          Cells are the basic unit of living things. They are smaller than a grain of sand cut into 10 pieces. Anything that needs air has cells. For example humans, we are made up of more than a trillion different cells!

Askelto2   665   N/A

Askelto2

Cone snails produce large amounts of venom in their venom sacs.Which of the following is true?

Cone snails produce large amounts of venom in their venom sacs.Which of the following is true?

Cone snails produce large amounts of venom in their venom sacs. The cells that produce this protein line the venom sac. Which of the following is most likely true regarding these cells?
A)They have a large central vacuole.
B)The have more mitochondri

fisher 2012   618   N/A

fisher 2012

Hydrostatic equilibrium in our Sun is the balance between?

Hydrostatic equilibrium in our Sun is the balance between?

1) convection and radiation.
2) pressure and radiation.
3) convection and gravitation.
4) gravitation and pressure.
5) radiation and gravitation.

ASJ   1474   N/A

ASJ

Theoretically, if an asteroid was dense enough, could it assume hydrostatic equilibrium?

Theoretically, if an asteroid was dense enough, could it assume hydrostatic equilibrium?

I mean if some space rock was only like a mile wide, but it was super dense, could it be rounded under its own gravity?

askollmeyer   609   N/A

askollmeyer

Can someone explain hydrostatic pressure in regard to capillary walls?

Can someone explain hydrostatic pressure in regard to capillary walls?

Can someone explain hydrostatic pressure in regard to capillary walls?

askforhelp   916   N/A

askforhelp

how does the hydrostatic skeleton of annelids helps them to burrow?

how does the hydrostatic skeleton of annelids helps them to burrow?

2. How is the efficiency for burrowing increased by segmentation?
3. Describe three ways that various polychaetes obtain food.
4. What features are shared between annelids and echiurans?

need help on my homework, please help thanks :]

Askelto2   2879   N/A

Askelto2

Sea Urchin Fertilization and Embryology Lab

Sea Urchin Fertilization and Embryology Lab

I've been having some difficulties coming up with a few of the remaining answers to questions in my Sea Urchin lab:

1. What would happen if the sperm could not get into the egg? Alternatively, what would happen if the fertilization me

MarcT   1088   N/A

MarcT

Phylum Porifera (Sponges) - Characteristics Summary!

Phylum Porifera (Sponges) - Characteristics Summary!

The sponge body depends on the ability to control and maintain water flow throughout the flagellated canals and round chambers depending on the type of body design the sponge has. Water brings with it oxygen, and microscopic food, and takes away carb

ehd123   1394   N/A

ehd123

How have plants and microbes affected the development of the modern world?

How have plants and microbes affected the development of the modern world?

How is science applied to this issue
How is science effective at addressing the issue
How is science limited at addressing this issue

Please use sources

tqwolfork   1000   N/A

tqwolfork

Which plant mechanisms do certain things and where?

Which plant mechanisms do certain things and where?

The process of absorbing water occurs in which location and which mechanism is used?
The process of the formation of the water column occurs in which location and which mechanism is used?
The process of transpirational pull occurs in which location a

desimaenugent   1009   N/A

desimaenugent

What is the role of following materials in plant physiology in general?

What is the role of following materials in plant physiology in general?

What is their specific role in the germination and growth of pollen tubes?


I need to fill up the following table

Substance||General Role||Specific Role
---------------------------------------------------------
Sucrose||    ||
Boron||    ||
Calcium

lifted   1060   N/A

lifted

what are moral arguments to genetically modified crops?

what are moral arguments to genetically modified crops?

there are two kinds of genetically mutated crops
1) injected with a natural pesticide
and
2) injected water or chemicals to make the crops look better.

tridigszx3   1160   N/A

tridigszx3

is it possible to purchase genetically modified seeds?

is it possible to purchase genetically modified seeds?

My school has forced me to participate in the science fair and I've decided to look into the possibility of  comparing genetically modified food to organic. SO I was wondering if it was possible to purchase said seed and if so where can I find them?

len5002   337   N/A

len5002

Do succulents still close their stomata during day time in office environment?

Do succulents still close their stomata during day time in office environment?

I found some pots with succulents wilted though I don't know how long they haven't been waterd.
But in natural habitats, they would get much less water than in the office.

I wonder if they still close the stomata under the l

HbLee   392   N/A

HbLee

Crude sap vs elaborated sap

Crude sap vs elaborated sap

Name the conduction vessels for each type of sap and indicate which of the two vessels is made of living cells

ehd123   1286   N/A

ehd123

Hello, there. I need in biologist friends

Hello, there. I need in biologist friends

Hello! My name is Zhanna.  I am twenty. I am from Kazakhstan, Pavlodar. I study at the first course  of pedagigical university of my town. I  will be a teacher of biology and chemistry.  I have lectures on 3 language in education.

Zhanna   472   N/A

Zhanna

Are individuals in hives egoistic?

Are individuals in hives egoistic?

greetings,

i always had the impression that everything that people do is a result of egoism (a personal desire or need that has to be met). people would band together for personal gain. a social structure is only there to benefit from othe

Kanzu7   414   N/A

Kanzu7

Iguana vs Snakes - References supporting innate knowledge of newborns

Iguana vs Snakes - References supporting innate knowledge of newborns

I guess most people by now have seen the BBC clip showing a hatched Galapagos marine iguana narrowly avoid becoming dinner for a swarm of racer snakes. Near the start of the clip it is implied by the narrator that the hatched iguana 'knows'

bluejay007   628   N/A

bluejay007

What is a good book that describes climate variables for reptiles?

What is a good book that describes climate variables for reptiles?

Hi All,

First off, my background is not in biology, so I apologize in advanced for any annoying comment.
I'm actually trying to build a DIY terrarium to have at home and host a gecko or even a turtle. I saw a lot of projects fill

eecook   617   N/A

eecook

Multituberculates in mammalian origin

Multituberculates in mammalian origin

The question is - Schematically represent the relationship of Multituberculata after Simpson in light of mammalian origin. This one has left even my teachers confused. Any help is welcome. Thank you

vijay_vrs   572   N/A

vijay_vrs

Proportions of a 3 meter (10 feet) tall digitigrade bipedal mammal

Proportions of a 3 meter (10 feet) tall digitigrade bipedal mammal

For a work i have to know how large the proportions of a 10 feet/3 meters tall bipedal mammal with digitigrade legs would be, i need the arms, legs and the masculine reproductive organ, taking as reference a human. sorry if it's a bit weird, but

Arrestedsolid   292   N/A

Arrestedsolid

Positive and Negative Tropism

Positive and Negative Tropism

Explain the difference between positive and negative tropism. Give one example of each.

ppk   7475   1 Reply

duddy

Absorption rate of proteins in carnivores?

Absorption rate of proteins in carnivores?

In order to solve a problem, I need to know some typical value of the absorption rate of proteins (amino acids) in carnivores. Can you give some typical value for this? If the answer is in nmom min-1 cm-2, then good. But other units will also do. Jus

visharad   1760   1 Reply

bio_man

Hestiate Cat Adoption (What do I do?)

Hestiate Cat Adoption (What do I do?)

I was wondering, someday I hope to get a kitten. If I raise that kitten around my two dogs and it doesn't fear them will the cat not fear other dogs? Also if you have two dogs and a fully grown cat and you seenthe dogs hate the cat and bark at i

Kelly185891   1119   1 Reply

duddy

Animal Behavior: Choosing Where to Live

Animal Behavior: Choosing Where to Live

In one study of brown bears (grizzlies) in Sweden, 15 of 16 males left their mothers and natal territories behind while only 13-32 females dispersed. Older and heavier females were less likely to be part of the dispersing cohort. So here, as in Beldi

Kelly185891   2645   1 Reply

bio_man

Cry Baby!

Cry Baby!

Birds are not the only animals in which offspring have special signals that appear to communicate need to a parent.  After reading the section of Chapter 9 Why Do Baby Birds Beg So Loudly?, develop an evolutionary analysis of crying

Kelly185891   1859   1 Reply

bio_man

Sexual Animal Behavior

Sexual Animal Behavior

In their classic paper on mating systems. (Emlen S & Oring L. Ecology, sexual selection, and the evolution of mating systems. Science 197:215-23, 1977), Steve Emlen and Lew Oring suggested that two ecological factors could promote the evolution o

Kelly185891   2130   1 Reply

bio_man

Chromophore of Phytochrome

Chromophore of Phytochrome

How does the chromophore’s shape change after absorption of
light and what does this do the phytochrome protein to allow for a different function?

Thank you!

Octoshark   1767   1 Reply

bio_man

Plants Diversity II

Plants Diversity II

1. In lower plants, the spore is the only protective stage in the plant cycle. Why do seed plants have an advantage over spore-producing plants.

2. What are the main differences between gymnosperms and angiosperms?

3

Ashmo   3086   1 Reply

bio_man

Dicots and Monocots

Dicots and Monocots

what's the difference between these two? examples please thnks

pumpkinbread   1437   1 Reply

pumpkinbread

The reduction of nitrates and nitrites to ammonia is considered an extension of photosynthesis...

The reduction of nitrates and nitrites to ammonia is considered an extension of photosynthesis...

Hi all!

I have a few questions that I am not sure of what the answers are!  I have tried to figure them out on my own and have answers to most if not all.  i just want to double check myself!! Please help me!!

1.) The

Hokiepokieful   1730   1 Reply

bio_man

The A-, B-, and C-class gene encode proteins that function as:

The A-, B-, and C-class gene encode proteins that function as:

One last question:

The A-, B-, and C-class gene encode proteins that function as:
   a. Promoter Regions
   b. Receptors
   c. Transcription Factors
   d. Hormones

I can't for the lif

Hokiepokieful   962   1 Reply

bio_man

Onion cell walls and red nuetral

Onion cell walls and red nuetral

Hi,

What feature in onion cell walls is it that makes red neutral color (stain) them? Is the staining equal; is everywhere of the cell and the vacuoles colored equally? If not, why?

Thanks.

mafhh   1629   1 Reply

bio_man

One major advantage of using Arabidopsis thaliana as a model system for studies

One major advantage of using Arabidopsis thaliana as a model system for studies

One major advantage of using Arabidopsis thaliana as a model system for studies of plant form and function is its   

A) high tolerance to stress.
B) fast generation time.
C) high mutation rate.
D) large seeds.
E) e

ppk   2977   1 Reply

Jeffrey

Studies using Arabidopsis thaliana have led to important advances in all of the

Studies using Arabidopsis thaliana have led to important advances in all of the

Studies using Arabidopsis thaliana have led to important advances in all of the following except     
A) impact of point mutations on gene function.
B) evolutionary history of plants.
C) how genes potentially interact with ot

ppk   2170   1 Reply

bio_man

Choose the option that best describes the relationship between the cell wall thi

Choose the option that best describes the relationship between the cell wall thi

Choose the option that best describes the relationship between the cell wall thickness of parenchyma cells versus sclerenchyma cells.   
A) The cell walls of parenchyma cells are thicker than those of schlerenchyma cells.
B) The

ppk   2728   1 Reply

bio_man

Which structure is incorrectly paired with its tissue system?

Which structure is incorrectly paired with its tissue system?

Which structure is incorrectly paired with its tissue system?
A) companion cell?ground tissue
B) tracheid?vascular tissue
C) root hair?dermal tissue
D) guard cell?dermal tissue
E) palisade parenchyma?ground tissue

ppk   3997   1 Reply

bio_man

Which of the following is derived from the ground tissue system?

Which of the following is derived from the ground tissue system?

Which of the following is derived from the ground tissue system?   
A) periderm      B) pith      C) phloem      D) cuticle      E) root hair

ppk   3048   1 Reply

lena213