BIOLOGY HIGH SCHOOL

Which statement is true about a cell wall but not a cell membrane

Answers

Answer 1
Answer: One statement that might be true about cell walls but not about cell membranes is that they are usually made out of cellulose. Plant cells have cell walls, and animal cells have cell membranes, but cell membranes need to made from a more permeable material to allow things to pass in and out more easily.
Answer 2
Answer:

Answer:

cell membranes need to made from a more permeable material to allow things to pass in and out more easily. and cell walls are not.

Explanation:

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Homo sapiens (human)| size 2,900 million bases| gene # -30,000| gene density 1 gene per 100,000 bases| chromosome #46 Rattus novegicus (rat)| size 2,750 million bases| gene # -30,000| gene density 1 gene per 100,000 bases| chromosome #42 Mus musculus (mouse)| size 2,500 million bases| gene # -30,000| gene density 1 gene per 100,000 bases| chromosome #40Drosophila melanogaster (fruit fly)| size 180 million bases| gene # 13,600| gene density 1 gene per 9,000 bases| chromosome #8Arabidopsis thaliana (plant)| size 125 million bases| gene #25,500| gene density 1 gene per 4,000 bases| chromosome #10Caenorhabditis elegans (roundworm)| size 97 million bases| gene #19,100| gene density 1 gene per 5,000 bases| chromosome #12Saccharomyces cerevisiae (yeast)| size 12 million bases| gene #6,300| gene density 1 gene per 2,000 bases| chromsome #32Escherichia coli (bacteria)| size 4.7 million bases| gene #3,200| gene density 1 gene per 1,400 bases| chromosome #1H. influenzae (bacteria)| size 1.8 million bases| gene #1,700| gene density 1 gene per 1,000 bases| chromsome #1The table shows the relative size of the genomes, number of genes, and number of chromosomes for a variety of different organisms. Based on what we know regarding the genetic code of all living things, how does the genetic code of a eukaryote organism compare to that of a prokaryote organism? A) Prokaryote organisms have much simpler DNA, containing fewer than four nitrogen bases. B) Eukaryote organisms have a larger genome containing a more complex set of nitrogen bases. C) Both types of organisms contain exactly the same four nitrogen bases, but in different sequences and numbers. D) Both types of organisms contain exactly the same four nitrogen bases, in the exact sequences, but in varying numbers.
Organisms need nutrients in order to:a. utilize hydrogen and oxygen.b. carry out essential life functions.c. recycle chemical compounds.d. carry out nitrogen fixation.

Even if you live in the middle of North America, the quality of your watershed can affect the quality of the ocean. How can this be? Select one: a. Evaporation carries materials from your watershed to the ocean. Incorrect b. Materials in your watershed are eventually transported to an ocean. c. The amount of water in your watershed will affect ocean evaporation. d. Materials in your watershed are not transported to an ocean.

Answers

The appropriate answer is b. Materials in your watershed are eventually trasported to an ocean. A watershed is the land area in which surface runoff enters into a river or river system. All rivers flow from a high elevation (upper course) to a low elevation (lower course). In most cases the lowest point where a river will flow to is the sea. As rivers flow they transport and deposit material along the course and eventually in the sea.

In the female body, each egg is surrounded by a _____________ which breaks open when the egg is mature.a. ovary
c. placenta
b. follicle
d. uterus

Answers

The correct answer is the ovarian follicle. In the female body, each egg is surrounded by an ovarian follicle which breaks open when the egg is mature. The ovarian follicle is the one responsible in secreting hormone during the menstrual cycle. 

Which of the three experiments gave evidence that protein was not the genetic material?

Answers

I believe it was hershey and chase

Final answer:

Chase and Hershey conducted experiments in 1952, using bacteriophages that revealed DNA, not protein, was the genetic material.

Explanation:

The experiments that revealed protein was not the genetic material were conducted by Martha Chase and Alfred Hershey in 1952. They were studying a bacteriophage, a virus that infects bacteria, which has two main structures: a protein coat known as the capsid, and a nucleic acid core that contains either DNA or RNA.

Hershey and Chase used radioactive markers to label the protein coat and DNA of the bacteriophage, respectively. Through their experiments, Hershey and Chase discovered that only the DNA entered the host bacteria upon bacteriophage infection, suggesting that DNA, not protein, is the genetic material. Their work was instrumental in establishing DNA as the molecule responsible for heredity.

Learn more about DNA as genetic material here:

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Compare and contrast what happens in mitosis and meiosis and discuss the importance of each process to a living organism.

Answers

mitosis is a process of cell duplication during which one cell gives rise to two genetically identical daughter cells.
meiosis a division of germ cells involving 2 fussions of the nucleus and giving rise to four gamates, each possessing half the number of chromosomes of the origional cell.

What are the 2 properties of enzymes that allow them to act as biological catalysts?

Answers

There are two properties of enzymes that allow them to act as biological catalysts, and those are temperature and pH levels. Certain temperature is necessary for enzymes to work the way they were intented to, and an appropriate ph level has to be maintained in order for enzymes to function properly.

What's the function of stomata in plants

Answers

Hey There!

Stomata is the process in plants, where the plants use the suns energy and carbon dioxide from the atmosphere, and oxygen is exchanged in return.

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Plants use their stomata to take in Carbon dioxide and take out oxygen during photosynthesis. It's how they "breathe" if that makes it more understandable.
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