What are two methods of active transport ?

Answers

Answer 1

Answer:

The first one is that transport proteins in the cell membrane ' Pick up ' molecules from outsides the cell and carry them in , while using energy in the process

The second method is that the the cell membrane surrounds a particle and takes it in

I hope that's help !

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Data used in ______ systematics stresses both common ancestry and the amount of change observed among groups.reproduction growth common ancestry none of the above
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In glycolysis, each molecule of glucose that is catabolized gives a net yield of how many molecules of ATP? a) 2 b) 4 c) 32 d) 36

Describe how competition and limited resources aided speciation in the Galapagos Island finches.

Answers

Answer:

It can be best explained with the help of Gause's law of competitive exclusion.

It states that no two species can coexist stably which compete for exact same resources.

In such conditions, the species which is inferior to other in terms of adaptations either extinct or evolve towards a different ecological niche.

For example, Galapagos island finches evolved with different shapes and sizes of beaks as an adaptation towards limited resources available such as different types of seeds or food.

Competition killed off all the organisms without traits that were benefitial to them. The organisms in the Galapogos Islands, such as the finches, made adaptions to settle in their new environment.

A mother has one allele for dimples and one allele for no dimples. What is theprobability that she produces a gamete with the allele for dimples?

Answers

Let’s use symbols for better understanding.

It is given that the mother has two alleles, one with and one without. Making the symboled be...Dd.

The father isn’t given so it would be a little hard to add them in a punnet square.

It would depend if the father would have all alleles be recessive (dd), dominant (DD), or be like the mother heterozygous (Dd).

Given the fact that the father isn’t given, here are all the probabilities with all three factors:

1. dd

This would make the result be

(Dd, dd, Dd, dd)

Meaning that there is a 50/50 chance for the offspring to have dimples. The other problem is that the problem doesn’t state that dimples are either dominant nor recessive so, in this case, I’ll assume their recessive.

The other 50% is for the offspring to have heterozygous genes. Meaning that they have the dimples gene but it’s covered up by the dominant gene of not having any.

2. DD

Here it would be really hard to have the offspring to have dimples. The parent has both alleles to be dominant, meaning that they will overrule the gene for dimples. Making the result be...

(DD, DD, Dd, Dd)

There is a 100% chance of the offspring to have the dominant gene overrule the recessive gene. But there is another 50% chance for the offspring to have the recessive gene hidden.

3. Dd

Result is...

(DD, Dd, Dd, dd)

This means that there is a 75% chance for the offspring to have the dominant gene overrule the recessive. But there is a 50% chance for the recessive gene to be hidden. There is a 25% chance for the offspring to have a pure dominant set of alleles, making them not have the recessive gene of having dimples at all. But there is another pure set of alleles for having the recessive gene stand out, a 25% chance for this case.

Hope this helps!

Plants in the desert ______.A. effectively conserve and retain water
B. have high levels of transpiration
C. release 50-80% of water back into the ecosystem
D. make their own precipitation

Answers

Answer:

A. Effectively conserve/retain water

Explanation:

Not only does this make the most logical sense, but it also is what plants in desert biomes actually do. Plants in the desert have made various adaptations to preserve their water, like by opening their stomata only at night or developing spikes to discourage animals from taking their water. I'm not sure if this is too much detail for you, but the plants in the desert that only open their stomata at night are called CAM plants, and other plants have made an adaptation so unique that they have their own name -- C4 plants, which utilize the relocation of CO2 to minimize water loss.

Further, B. is the opposite of conserving water, and C. is the opposite of conserving water. D. is just hilarious.

Hope this helped, cheers.

The answer is a cause how would they survive out there in the heat with little water they would have to retain water for themselves

Dentify the correct sequence of molecules, as a gene goes from coded information in the nucleus, to the product the cell wants to make.A) DNA 0> messenger RNA 0> transfer RNA 0> protein
B) DNA 0> transfer RNA 0> messenger RNA 0> protein
C) DNA 0> transfer RNA 0> protein 0> messenger RNA
D) Protein 0> messenger RNA 0> transfer RNA 0> DNA

Answers

It would be A
First is: DNA > mRNA (messenger RNA) > tRNA (transfer RNA) > protein

Potatoes turn green on the kitchen window sill

Answers

It is true that potatoes turn green on he kitchen window sill. Potatoes turn green when they come in contact with sunlight. This is because of an enzyme secretion that happens. The potato still remains edible but the skin might taste a bit bitter. With temperature rise the greenness of the potato also increases.

Which of the options best describes the purpose of photosynthesis?A) Store genetic information to pass onto offspring

B) Convert sunlight into chemical energy to produce a food (sugar)

C) Break down food sources to produce ATP

Answers

Answer:

Explanation:

I answered this question before.

Answer:

Explanation:

Since plants are autotrophs, they produce their own food, so the purpose of photosynthesis is to transform water, sunlight, and carbon dioxide into oxygen, and simple sugars that the plant uses as fuel.

Hope this helps:)

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A researcher creates random copolymers of three nucleotides by mixing polynucleotide phosphorylase with guanine and adenine nucleotides in a ratio of 5 guanine nucleotides to 1 adenine. Which of the following three nucleotide copolymers would most likely be most abundant? A. GGG D. GAA E. AAA B. GAG C. AGA

in a plant algae, fungi, and most bacteria cells, there is a rigid layer that surrounds the cell membrane and gives protection, support, and shape to the cell. what is this layer called?

A breastfeeding mother requires at least __________ liters of water per day, and should drink at least one cup of water each time she breast-feeds her child.