ehd123

Which of the following is a possible reason for grouping the peroxisomes with chloroplasts and mitochondria?

Which of the following is a possible reason for grouping the peroxisomes with chloroplasts and mitochondria?

a. They are all involved in ATP synthesis.
 b. They all contain two or more membranes.
 c. They all contain DNA and make some of their own proteins.
 d. They are all part of the plastid family of organelles.
 e. None of these organelles are part

firegirl2012   549   1 Reply

lessie_anicia

Why are non-vascular plants like mosses not considered Algae whereas seaweeds are considered algae?

Why are non-vascular plants like mosses not considered Algae whereas seaweeds are considered algae?

Mosses are also non-vascular and lack true roots or root systems , relying entirely on diffusion to obtain water and minerals. The same goes for seaweeds. Both have holdfasts in place of roots. Their cell walls are also largely similar (comprised pri

Micromowie   780   2 Replies

rks23456

Which type of plastid stores food?

Which type of plastid stores food?

Which type of plastid stores food?

Midnightcharm   854   2 Replies

letsgopats

amusement park analogies for parts of a cell (cytoskeleton, flagella, cilia, plastid)?

amusement park analogies for parts of a cell (cytoskeleton, flagella, cilia, plastid)?

ridiculous assignment for my bio class

firework6   2364   1 Reply

letsgettothis

what is vacuole pigmentation?plastid pigmentation?what do you call the streaming movement of photoplasts?

what is vacuole pigmentation?plastid pigmentation?what do you call the streaming movement of photoplasts?

what is vacuole pigmentation?plastid pigmentation?what do you call the streaming movement of photoplasts?

Midnightcharm   509   2 Replies

lespink29

what is a plastid that contains color pigments?

what is a plastid that contains color pigments?

what is a plastid that contains color pigments?

Micromowie   495   2 Replies

lespinal

Does the plastid store food for a cell?

Does the plastid store food for a cell?

Biology project...

micronut   436   1 Reply

rknicker

name the plastid which stores starch , oils and protein granules?

name the plastid which stores starch , oils and protein granules?

name the plastid which stores starch , oils and protein granules?

fisher   2564   1 Reply

rkoch

what do you mean by plastid transformation? give an example?

what do you mean by plastid transformation? give an example?

Please give me the answers with sub headings and diagrams and answers with sharp points for examinations

Leugim Legna   342   1 Reply

irina

what plastid is present in elodea (plant)?

what plastid is present in elodea (plant)?

Also when you see the movement of the "green bodies" through a microscope, what is this kind of movement called?

MicroNerd   1147   1 Reply

Leugim Legna

Which plastid synthesizes and stores starch?

Which plastid synthesizes and stores starch?

A) leucoplast? B) chloroplast? C) chromoplast? D) amyloplast?

rl93   737   1 Reply

FIREMEDIC73

state one feature that is similar and one which is dissimilar with respect to mitochondria and plastid?

state one feature that is similar and one which is dissimilar with respect to mitochondria and plastid?

state one feature that is similar and one which is dissimilar with respect to mitochondria and plastid?

LevaAnd   1078   2 Replies

fire_crystal

which one is not visible under 400x magnification plastid or cell wall?

which one is not visible under 400x magnification plastid or cell wall?

which one is not visible under 400x magnification plastid or cell wall?

lesliepeng   1432   1 Reply

irina

Name the plastid involved in conversion of a green tomato to red.?

Name the plastid involved in conversion of a green tomato to red.?

Name the plastid involved in conversion of a green tomato to red.?

fisher   2992   1 Reply

let

Which of the following plant is a colorless plastid that stores starches in roots?

Which of the following plant is a colorless plastid that stores starches in roots?

thyloplasts
chloroplasts
chromoplasts
amyloplasts
both chloroplasts and chromoplasts

rkoch   1789   2 Replies

rl93

What is the plastid's main functions and meaning?

What is the plastid's main functions and meaning?

What is the plastid's main functions and meaning?

lethalheritage   352   1 Reply

fire_crystal

Is plastid a type of vacuole, or just similar to vacuoles?

Is plastid a type of vacuole, or just similar to vacuoles?

Is plastid a type of vacuole, or just similar to vacuoles?

fishayyy   2492   1 Reply

lessie_anicia

What are peroxisomes? And are there different kinds of plastid?

What are peroxisomes? And are there different kinds of plastid?

What are peroxisomes? And are there different kinds of plastid?

firestrike   270   1 Reply

LessieP

What is the name of the plastid found in tomatoes? What is the name of hte plastids found in potatoes?

What is the name of the plastid found in tomatoes? What is the name of hte plastids found in potatoes?

What is the name of the plastid found in tomatoes? What is the name of hte plastids found in potatoes?

fireman2101   315   1 Reply

fire_crystal

A type of plastid that transfers energy from light to organic compounds is a?

A type of plastid that transfers energy from light to organic compounds is a?

sadly it isnt multiple chooice -.- so please help! D:

Microgirl16   502   1 Reply

bugmenot1

Where is this "excitatory stimulus" started from in the first place?

Where is this "excitatory stimulus" started from in the first place?

A local membrane depolarization caused by an "excitatory stimulus" causes some voltage-gated sodium channels in the neuron cell surface membrane to open, allowing sodium ions to diffuse in through the channels along their electrochemical gradient.

nzrodrigue   1345   1 Reply

SmokeyV4L

Which of the following answers includes all of the other terms on the list?

Which of the following answers includes all of the other terms on the list?

Please help me figure this out.

Which of the following answers includes all of the other terms on the list?

transport of an ion down its electrochemical gradient  
 diffusion
 facilitated diffusion  
 passive transport

nzrodrigue   802   1 Reply

_biology

What determines the speed and direction of ions in and out of a cell?

What determines the speed and direction of ions in and out of a cell?

the concentration gradient and electrochemical inbalances, or are there specific stimuli to open gated channel proteins?

ilapple   514   1 Reply

smperzin

Please help me with this biology question?

Please help me with this biology question?

Explain how an electrochemical gradient is established and identify two examples of organs or tissues whose function is dependent on these gradients.

Anything would be helpful because I'm really confused. Thank you.

ikk260   511   1 Reply

ilapple

animal cell lacking oligosaccharides, external surface of its plasma membrane would likely be impaired in whic?

animal cell lacking oligosaccharides, external surface of its plasma membrane would likely be impaired in whic?

A.) transporting ions against an electrochemical gradient
B.)cell- cell recognition
C.)maintaining fluidity of the phospholipid bilayer
D.) attaching to the cytoskeleton
E.)establishing the diffusion barrier to charged molecules.

zzwChris   1822   1 Reply

o2blea

In Multiple Sclerosis, the myelin sheath slowly degrades. What are possible consequences of this?

In Multiple Sclerosis, the myelin sheath slowly degrades. What are possible consequences of this?

In Multiple Sclerosis, the myelin sheath slowly degrades. What are possible consequences of this?
a. Axons are slower to fire initial action potentials so response time are slower.
b. Ions are able to diffuse out of the axon membrane more easily, so

il0veu08   551   2 Replies

o.avworo

What is the voltage across a membrane called?

What is the voltage across a membrane called?

A.Chemical Gradient
B.Water Potential
C.Membrane Potential
D.Osmotic Potential
E. Electrochemical Gradient

il0veu08   712   2 Replies

nzegbuna.ify

In chemiosmotic phosphorylation, what is the most direct source of energy that is used to convert ADP + i to A?

In chemiosmotic phosphorylation, what is the most direct source of energy that is used to convert ADP + i to A?

A) energy released from substrate-level phosphorylation
B) energy released from movement of protons through ATP synthase, against the
electrochemical gradient
C) energy released from movement of protons through ATP synthase, down the electrochemical

iladelph   1757   1 Reply

smonkey89

How does myelination affect the propagation of an action potential?

How does myelination affect the propagation of an action potential?

-It slows down propagation because Na+ channels exist only at unmyelinated nodes (nodes of Ranvier).
-It speeds propagation because charge does not leak out of the membrane as it spreads down the axon.
-It speeds propagation by increasing the densi

nypnai86   1040   1 Reply

o371359

what will be the overall direction of chloride ion movement across the plasma membrane of this cell?

what will be the overall direction of chloride ion movement across the plasma membrane of this cell?

Under resting conditions, negatively charged chloride ions are present in much greater concentration outside a given cell compared to inside the cell. the cell also has a resting membrane potential of -70mV. At a certain point in time, the binding of

smokeyd   463   1 Reply

smokinjoe531

what is the process of electron transport?

what is the process of electron transport?

Electron Transport Chain (ETC): what are the end products? What happens in the ETC? What is proton-motive force? What happens? ATPase? When is the electrochemical gradient formed? What is chemiosmosis? What is NADH? FADH? What are the different elect

smorgan6616   293   1 Reply

buggingout16

Which one of the following is NOT a result of the electron transport chain?

Which one of the following is NOT a result of the electron transport chain?

An electrochemical gradient is produced.

The inside of the mitochondrial matrix is negatively charged relative to the intermembrane space.

O2 typically functions as the terminal electron receptor.

NAD+ and FAD cofactors are regenerated.

The energ

smooth212   347   1 Reply

nzrodrigue

Why is the inside of an animal cell negative?

Why is the inside of an animal cell negative?

More specifically, why is the inside of a neural cell negative when it is filled with positive Potassium ions? And can anyone explain to me exactly how an electrochemical gradient helps with action potential?

Thanks in advance!

bugmenomore   391   2 Replies

nyuboy1

the primary mechanism for eliminating K+: a/osmosis b/secretion c/filtration d/solvent drag e/electrochemical?

the primary mechanism for eliminating K+: a/osmosis b/secretion c/filtration d/solvent drag e/electrochemical?

the primary mechanism for eliminating K+:
a/osmosis
b/secretion
c/filtration
d/solvent  drag
e/electrochemical gradient

ilapple   337   1 Reply

zzwChris

What is the benefit of remodleing the membrane in this case?

What is the benefit of remodleing the membrane in this case?

Imagine an aquatic photorophic bacterium living at depths at which sunlight penetrates poorly( e.e there is low light intensity). Its main source of energy is sunlight. This organism  (Rhodobacter sphaeriodes) ahs evolved the ability to invaginate is

o371359   271   1 Reply

smperzin

Which of the following statements best describes the sodium-potassium pump found in the animal cells?

Which of the following statements best describes the sodium-potassium pump found in the animal cells?

A. It is an example of facilitated diffusion in which no energy in the form of ATP is required
B. It creates an electrochemical gradient that is used to generate ATP by chemiosmosis
C. It is used to pump ions down a concentration gradient without the

zzwChris   452   1 Reply

ilapple

Which of the following processes includes all others?

Which of the following processes includes all others?

Which of the following processes includes all others?
A) diffusion of a solute across a membrane
B) facilitated diffusion
C) passive transport
D) osmosis
E) transport of an ion down its electrochemical gradient

Answer is Passive Transport because th

o2blea   2098   2 Replies

buggingout16

Electrochemical gradients of ions?

Electrochemical gradients of ions?

Which way would sodium, potassium, chloride and calcium diffuse diffuse down the electrochemical gradients? Extracellular to cytoplasmic or cytoplasmic to extracellular?

Thank you!

buglitter   497   1 Reply

smrogers

Some photosynthetic organisms contain chloroplasts that lack photosystem II, yet are able to survive.?

Some photosynthetic organisms contain chloroplasts that lack photosystem II, yet are able to survive.?

Some photosynthetic organisms contain chloroplasts that lack photosystem II, yet are able to survive. The best way to detect the lack of photosystem II in these organisms would be
A) to determine if they have thylakoids in the chloroplasts.
B) to t

Smntnl   1641   1 Reply

smonkey89

why is the electron in photosystem I boosted to a higher energy level than that caused by photosystem II?

why is the electron in photosystem I boosted to a higher energy level than that caused by photosystem II?

why is the electron in photosystem I boosted to a higher energy level than that caused by photosystem II?

nyuboy1   707   1 Reply

smokebomb13