Question

Which of the following describes organelle structures that plant and animal cells have in common?
They both have ribosomes that are used to synthesize proteins and a cell membrane that serves as a selective barrier for the cell.

They both have a central vacuole that stores water and food and mitochondria that releases energy from glucose molecules.

They both have lysosomes where digestion of large macromolecules by enzymes occurs and a Golgi apparatus where proteins are processed.

They both have a nucleus where DNA is stored and replicated and a cell wall which provides p

Answer 1

protection and support.

Answer 2

First choice, both plant and animal cells have ribosomes and cell membranes. Hope this helps :)

Answer 3

can u explain why ?

Answer 4

@theonlyrope

Answer 5

Yes, the Cell membrane is found on both the plant and animal cells, because it is used to allow substances to come into and out of the cells. Without this, the cell couldn't function. As for the Ribosomes, are responsible for protein production. Once again, the cell couldn't function without these. That should clear it up

Answer 6

thanks. can u helpl with a few more ? ill post one at a time.

Answer 7

I will try to help as much as i can!

Answer 8

Photosynthesis is made up of both light-dependent and light-independent reactions. Identify the products of the light-dependent portion of photosynthesis.

ADP, NADP+, and glucose

ATP, NADPH, and oxygen

NADP+, oxygen, and glucose

Carbon dioxide, water, and ATP

Answer 9

u can give me a short explaination

Answer 10

The second choice would be correct because you don't need glucose in this stage of photosynthesis, that is in a later stage. And water is not needed for this stage either as the water comes in through the roots, and inst involved with light. Any chance this is for FLVS? haha

Answer 11

A glass dish containing a few drops of water in the presence of carbon dioxide gas, nitrogen gas, and small organic compounds is heated by a flame and UV radiation. Which early Earth scenario does this set-up most closely resemble?

Deep sea volcanoes giving off gases, sulfur, and iron to produce organic molecules

Lightning in the early atmosphere, which may have produced the first organic molecules

The replication of RNA near the ocean's surface in the day and night cycling of temperatures

Amino acid formation from organic molecules in ocean water splashing on hot rock, sand, or clay

Answer 12

A is the correct choice: Amino acids are made out of carbon, nitrogen and a few side chains which resemble those organic molecules and your told that you have these molecules in a solution on a heated platter/tray

Answer 13

Scientists have found that all living things, from bacteria to humans, rely on genetic codes to direct the functions of their cells. These genetic codes are contained in strings of nucleotides and have very similar structures. Which hypothesis for the origin of life on Earth is supported by this evidence?

Self-replicating RNA in the early Earth's oceans served as the basis for the DNA in cells today.

Nucleotides and proteins that form the basis of life were originally carried to Earth from outer space by comets and meteorites.

Lightning striking water in an atmosphere rich in methane, ammonia, and hydrogen produced amino acids that are used in cells today.

Photosynthesizing bacteria provided oxygen that formed ozone which protected DNA from mutating into different forms.

Answer 14

?

Answer 15

Lightning striking water in an atmosphere rich in methane ammonia and hydrogen produced amino acids that are used today in cells, as found in the Urey And Miller Experiment, So choice C

Answer 16

My internet froze on that one, my apologies...

Answer 17

oh okay.
Which of the following can you correctly infer from the graph about how the pH affects the enzyme's role in the target chemical reaction?



There is a specific pH range in which the enzyme effectively lowers the reaction's activation energy.

Increasing the pH makes it easier for the enzyme to lower the activation energy of the target reaction.

The activity of the enzyme to lower reaction activation energy is inversely proportional to the pH.

The enzyme will not assist the chemical reaction at a pH that is below 5 or above 13.

Answer 18

The activity of the enzyme to lower reaction activation energy is inversely proportional to the PH, cant really explain this one, but i took FLVS too lol

Answer 19

In an mRNA molecule, a group of three nitrogenous bases makes up a codon, and each codon codes for an amino acid. There are four different nitrogenous bases that can be arranged into different codons, but there are only 20 different amino acids. Based on this information, what conclusion can you make about the genetic code?

Each codon can be translated into more than one possible amino acid

Many of the possible combinations of nitrogenous bases do not code for anything and are not involved in gene expression.

Several different codons result in the production of the same amino acid.

During translation, nitrogenous bases are rearranged into a sequence that corresponds to an amino acid.

Answer 20

Im really not sure on this one sorry, I dont want to give you a wrong answer.

Answer 21

Bacteria have many ways to survive, including developing mutations that provide them with a resistance to antibiotic medications. The standard practice of doctors is to administer a single antibiotic medication at a time to their patients. However, active infections are sometimes treated with a combination of several antibiotics given simultaneously to reduce the chances of bacteria developing antibiotic resistance. Why would giving multiple antibiotics at once be less likely to create a population of resistant bacteria?

While bacteria may be able to survive the destruction of one of their genes, it is less likely that they would be able to survive the destruction of several genes at the same time.

Most bacteria would not develop all the mutations needed to resist the attack of multiple antibiotics given at the same time.

Giving one antibiotic at a time would allow the bacteria enough time to tailor the correct mutations they needed to resist all antibiotics they might come in contact with in the future.

A bacterium would need to have a mutation caused by insertion or deletion of a sequence, which is much less likely to occur than a base pair substitution, in order to survive several antibiotics at a time.
how about this one ?

Answer 22

I have to go do a collaboration project for FLVS, i cannot answer any more questions right now, tag me in any questions later and i will take a look.

Answer 23

u have done enough thank u soooo much :)

Answer 24

Glad i could help :)