Please help - AP Bio


Water potential is the tendency of water to move from one place to another. Pumpkin cores were placed in sucrose solutions at 22°C and normal atmospheric pressure. The following data were gathered.

Individual Data for Pumpkin Cores

Contents in beakers Initial mass Final mass Percentage

change in mass

Water 29.15 32.12

0.2 M sucrose 28.45 29.41

0.4 M sucrose 30.92 29.84

0.6 M sucrose 29.25 27.14

0.8 M sucrose 32.09 28.54

1.0 M sucrose 31.67 27.58


a) Complete the above table

b) Graph the percentage change in mass. Label both the x and y axes.

c) Using the graph, determine the molar concentration of the pumpkin cores and explain how it is related to pressure potential.

Answer:

1) is answer A

2)B

3) D

Explanation:

Answer:

AB

Explanation:

I think because i am pretty sure it'll be 50/50

Answer:

TGCA

Explanation:

Answer:carbon

Explanation:

Awnser:

Carbon is the awnser

Answer:

Enzymes

Explanation:

Earth moves about 1 degree in one day. Multiply that by 30 days so the Earth moves about 30 degrees in one month.

Answer:

hydrophilic molecules that provide energy to the body.

Explanation:

because looked in my study book, then asked my teacher.

Answer:

Glucose is a sugar that many plants, animals and fungi use for energy. In plants, glucose is produced as a result of photosynthesis. Plants need the energy glucose provides in order to grow and reproduce. ... Without glucose, plants would not have the energy necessary to grow, reproduce or carry out cellular respiration.

Explanation:

UwU Hope I helped

Answer:

I believe the answer is D.

Explanation:

I believe the biggest challenge will be getting everyone vaccinated and in a short period of time.

Answer:

Cells can be specialized for specific functions.

Explanation:

I hope that helps

You can learn anatomy and help animals if you wanna be a vet

Answer:

Prokaryotes do not have a golgi

Explanation:

eukaryotes have a Golgi apparatus but prokaryotes do not

Answer:

the right answer is

tRNA bonds with mRNA, bringing in amino acids.

Explanation:

Ribonucleic acid is a single-stranded structure. The true statement is tRNA brings in an amino acid and bonds with mRNA. Therefore, the correct answer is option 1.

The Transfer RNA, or tRNA, transports amino acids to the ribosomes, the cell's protein-making factories, during the synthesis of proteins. An anticodon, which is a particular set of nucleotides on each tRNA molecule, is complementary to the codon on the mRNA (messenger RNA) molecule. From the DNA in the nucleus to the ribosomes in the cytoplasm, the mRNA transports the genetic information.

The tRNA with the complementary anticodon brings in the exact amino acid that is coded by that codon when the ribosomes read the codon on the mRNA. In order for the ribosomes to assemble the amino acids into a protein chain in the proper sequence, the tRNA molecule then forms a connection with the mRNA.

Therefore, the correct answer is tRNA brings in an amino acid and bonds with mRNA, i.e. Option 1.

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Answer:

Bison and Pigs

Explanation:

According to molecular evidence, the closest living relatives of whales are, quite surprisingly, the artiodactyls a group of hoofed animals

Answer:

There are two kinds of respiration: Aerobic and Anaerobic. ... Aerobic respiration takes place in the presence of oxygen, produces a large amount of energy. Carbon dioxide and water are produced as the waste products. Anaerobic respiration takes place without the use of oxygen, produces small amounts of energy.

Explanation:

I looked it up for u :D

Answer:

Enzymes speed up the breakdown of macromolecules in food to small molecules

Explanation:

During digestion, the macromolecules that make up food are hydrolyzed by digestive juices to molecules of a size that allows their absorption through the lumen of the tract. In this way, proteins are divided into amino acids, carbohydrates into glucose and other monosaccharides, and fats into glycerol and fatty acids. Digestion and absorption take place mainly in the small intestine.The production of extracellular enzymes that, once released into the medium, degrade the substrate and then allow their diffusion / transport.

Answer:

B

Explanation:

Adaptations result from variations that help an organism to survive better in the environment. Option D is correct

Adaptation:

It is the physical changes in the organisms that increase the chance of survival.

Variation:

They are the traits that are found in the population that are caused by

genetic mutation.

For example- Coat color of Rabbit:

If it is brown color this can help rabbit to hide himself, but there are other colors also that are variation.

Therefore, adaptations result from variations that help an organism to survive better in the environment. Option D is correct.

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Answer: Ribose is synthesized from glucose and other monosaccharide molecules in living cells by a process known as pentose phosphate pathway. The pentose phosphate pathway is a series of chemical reactions taking place in the cytosol of cells.

Glucose forms ribose through a series of chemical reactions, including the conversion of glucose-6-phosphate to ribose-5-phosphate.

Ribose sugar is a five-carbon sugar molecule that is an important building block of nucleic acids, such as RNA and DNA. It is a type of carbohydrate and is structurally similar to glucose, but has a different chemical arrangement.

Ribose is synthesized in the body through a series of metabolic reactions, starting with glucose, and is also found in some natural sources such as ribose supplements. It is important for the production of energy in cells, the regulation of gene expression, and the synthesis of nucleotides.

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The nucleotides which base pairs together in the DNA helix are adenine(A) to the thymine (T) and Cytosine(C) to the Guanine (G). A purine always base pairs against a pyrimidine.

Nucleotides are the monomeric units of the genetic material i.e., DNA present in the nucleus of cell. Nucleotides are made up of three components which include a nitrogenous base, a deoxyribose sugar in case of DNA or a ribose sugar in case of RNA, and a phosphate group moiety.

The nitrogenous bases are of two types on the basis of their structures: Purines and Pyrimidines. Purines are double-ring structures which contain an imidazole ring attached to a pyrimidine ring. This include Adenine and Guanine. Pyrimidines are single-membranous structures which are similar to pyridine. Pyrimidines include cytosine, thymine and uracil. In DNA, thymine is present whereas in RNA, uracil is present.

A purine always base pairs with a pyrimidine. In case of DNA, an adenine forms two hydrogen bonds to base pair with thymine and vice versa whereas guanine forms three hydrogen bonds while pairing with cytosine residues and vice versa.

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Answer:

Recessive genes.

Explanation:

Both parents were likely carriers of the rare disease, but dominant traits allowed them not to be affected by it.

Answer:

 1 ly = 9433962264150.9 km

Answer:

False

Explanation:

In a food wed the arrows point to the animal that will eat the organism, it's pointing away from

Answer:

False

I hope this helps!

Answer:

I dont understand

Explanation:

i need more information to answer the question sorry

Answer:

2.2

Explanation:

Since all of the mice in the F1 generation are heterozygous for both traits, they contain a copy of each on separate chromosomes. (AB on one from parent 1 and ab on the other from the parent 2.)  If these chromosomes split away from each other without crossing over, the F2 offspring can ONLY by AABB or aabb.  This means that any heterozygous combinations are the result of crossing over and must be counted.  When all are counted, we get a total of 11, or 2.2 per cross.

To calculate the mean number per cross of the offspring that result of crossing over, we need to make an addition of individuals that result from crossing-over, and divide the result by the number of crosses. The result is 2.2.

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According to the statement, crosses were as follow

Cross 1) Between two true-breeding

Parentals)  LLBB    x    llbb

F1) 100%  LlBb

Cross 2) Between two dihybrids

Parentals)  LlBb    x    LlBb

The results of the F2 are

Phenotype                      Cross1     Cross2     Cross3     Cross4     Cross5    

Long-Black                         6              5               5                 6            7

Long-White                         1               1                0                 2           2

Short-Black                         0             2                1                  1             1

Short-White                        2              3                 3                2            2          

If there is no crossing-over, offspring will have the same chromosomes as parentals, which are Long-Black (LB) or Short-White (lb), because these chromosomes separate without interchanging segments.

However, if there is crossing over, these chromosomes interchange segments, and the result is Long-White (Lb) and short-black (lB).

So now, we need to count how many individuals from the F2 are a result of crossing-over.

       Phenotype         Cross1   Cross2   Cross3   Cross4   Cross5     Total    

                                                                                                                  11

Eleven individuals result from crossing over. But we need to calculate the mean number per cross.

So, since there are 5 crosses, we need to divide the total number of individuals that are the result of crossing over by the total number of crosses.

Mean number per cross of F2 generation ⇒  11/5 = 2.2

The mean number per cross of F2 generation offspring that are the result of crossing over is 2.2

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Answer:

nucleus

Explanation:

Answer:

A mutation is a change in a DNA sequence. Mutations can result from DNA copying mistakes made during cell division, exposure to ionizing radiation, exposure to chemicals called mutagens, or infection by viruses

Explanation:

here is!!

Answer:

The action or process of mutating.