How big is a major big giant chode

What do the function and structure of the forelimbs of the 4 animals tell us

marin [14]

Answer: biomarker: A substance used as an indicator of a biological state, most commonly disease.

trace fossil: A type of fossil reflecting the reworking of sediments and hard substrates by organisms including structures like burrows, trails, and impressions.

fossil record: All discovered and undiscovered fossils and their placement in rock formations and sedimentary layers.

strata: Layers of sedimentary rock.

fossiliferous: Containing fossils.

Explanation: hope this is what you mean if not ill try again

8 0

2 years ago

Micronutrients are needed for _____.

IrinaK [193]

I think the answer is A
Hope this helps have a good night!

4 0

2 years ago

Tell me the answer for everythink

natita [175]

Question:why were maggots there only after the flies left
Hypotheses:the maggots are fly larva

4 0

3 years ago

Read 2 more answers

When individuals migrate, alleles can be transfered from one population to another population. This commonly referred to as

loris [4]

Answer:

Gene flow.

Explanation:

When individuals migrate, alleles can be transferred from one population to another population which is known as gene flow. Gene flow is also called gene migration, the introduction of genetic material through interbreeding from one population of organisms to another which changes the composition of the gene pool of the migrated population of organisms. This gene flow creates a new species that is different from previous population of organisms

3 0

2 years ago

Correctly identify each of these definitions or examples as either depolarization or hyperpolarization of the plasma membrane. 1

natulia [17]

Answer:

hyperpolarization
depolarization
hyperpolarization
depolarization
hyperpolarization
depolarization
depolarization

Explanation:

The resting membrane potential is balanced by ion leakage and ion pumping, to get an electrical signal started the membrane potential has to lose its balance. This starts with a membrane channel opening for Na+ since Na+ concentration is higher outside the cell, ions will rush into the cell. This will change the relative voltage inside the cell. The resting potential has a voltage of -70 mV, the sodium cation entering the cell cause it to become less negative. This is known as depolarization.

The concentration gradient for Na+ will continue to enter the cell making the voltage to become positive reaching +30 mV. At the same time, this happens, other voltage-gated channels are also opening, a concentration gradient acts on K+, as well, as it leaves the cell, it takes a positive charge with it making the membrane potential to move back to its resting voltage of -70 mV. This is called repolarization.

For potassium ions to reach equilibrium the membrane voltage needs to be below -70 mV, this leads to a period of hyperpolarization that occurs while the K+ channels are open.

I annexed an image that illustrates this action potential process.

Considering the information given during depolarization there's an increase in the number of sodium leak channels (7) making the inside of the cell more positive (2) increase in the membrane potential (4), this also implies a decrease in the extracellular concentration of potassium (6)

Meanwhile, during hyperpolarization an increase in the extracellular concentration of potassium (3) decreases the membrane potential (1) making the inside of the cell more negative (5).

I hope you find this information useful and interesting! Good luck!

4 0

2 years ago