BIOLOGY HIGH SCHOOL

All BUT ONE statement describes an advantage of meiosis.

Answers

Answer 1
Answer:

Answer:

meosis

Explanation:

these are reduction cells

helps in formation of gamets

it is known as rrductional cells

it produces twice the number chromosomes aa the mother cell.
Answer 2
Answer: reduction of cells within meiosis

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During a hurricane, salt water invades fresh water marshes causing many of the plants to die and ultimately the loss of soil. The plants are killed because the salt-water solution is ________ to the plants drawing water from the plant cells. A. Oligotonic B. Hypertonic C. Mesotonic D. Isotonic E. Hypotonic
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Which of the following molecules can be considered a final product in the flow of information within a cell?A) DNAB) RNAC) proteinD) lipidE) Protein or RNA can be the final product of a gene.
Explain how a species can evolve through natural selection.

Which of the following structures is only a part of the male reproductive systems in humans?A. Uterus
B. Seminiferous tubules
C. Cervix
D. Urethra

Answers

I think it's b because it isn't where sperm is created and obviously women don't have that

A red blood cell in a hypertonic solution will appear (1 point)A.Swollen
B.Shrunken
C.Normal

Answers

It’s B. shrunken. The red blood cell will lose water and shrink as the water moves down it’s concentration gradient from the cell into the solution.

Which plant cell organelle helps maintain the shape of the cell by helping to maintain turgor pressure?

Answers

Answer: Vacuole

Explanation:

The vacuole occupies on average 50% of the cell volume, oscillating between 5 and 95%. It is a fluid-filled, membrane-wrapped gallbladder. The vacuoles perform numerous functions because, in addition to accumulating nutrients, metabolites, and catabolites, they serve as deposits of specific substances such as proteins, opium, dairy and also various poisonous or unpleasant taste substances, which protect the plant against its predators.

Vacuoles are structures that participate in the maintenance of cell turgor, which pulls the cytoplasm against the cell wall as air tightens the air chamber against the tire. When water is lacking, the plant wilts due to decreased intracellular turgor.

The plant cell organelle which helps in maintaining the shape of the cell by maintaining turgor pressure is vacuole.

Further Explanation:

The vacuole is an organelle which is mainly present in animal and plant also. There is a difference in size of plant and animal vacuole. Plant cells contain vacuole in the centre of the cell which is much larger than the animal vacuole. Animal cells contain multiple vacuoles that are scattered in the cytoplasm of the cell. They contain membrane-bound sacs. The cell membranes of vacuoles are made up of phospholipids. Proteins are embedded in the cell membrane to transport small molecule. Most plant cells use vacuoles to store water. Animals don’t use vacuole as water storage they store product for endocytosis and exocytosis.

The major functions of vacuoles are:

  • To store water in plants
  • To provide turgor pressure
  • To store material of exocytosis and endocytosis
  • To store fat cells

Manly in plants, a large vacuole is present. This vacuole is enclosed by a cytoplasmic membrane which is tonoplast. This layer can easily stretch and fill with solution. They can easily fill with proton and create acidic environment inside the cell. The development of chemical gradient is helps in transporting material inside and outside of vacuole. They use proton motive force to transport molecule. The vacuole when filled completely with water exerts a pressure on walls of cells called turgor pressure. These force help in maintaining the shape of the cell. Also, allow cells to stand up in rain, wind and hail.

Learn more:

  1. Learn more about cell organelle brainly.com/question/5923583
  2. Learn more about the diffusion brainly.com/question/1386629
  3. Learn more about the plant brainly.com/question/862697

Answer Details:

Grade: High School

Subject: Biology

Chapter: Plant Cell

Keywords:

Membrane, vacuole, exocytosis, endocytosis, fat cells, turgor pressure, water, animal, plant, solution, material, tonoplast, cytoplasmic membrane.

Which of the following selection pressures is responsible for the limited evolutionary changes experienced by alligators and other crocodilians?a.

stabilizing selection


b.

directional selection


c.

disruptive selection


d.

high mutation rate

Answers

The answer is a. stabilizing selection. This is the correct answer because genetic phenotype's among alligators and crocodiles were conserved during the evolution of the species. The reptiles have very little phenotypic variation or difference in physical traits, which would is the result of a stabilizing genetic selection process.

Answer:

A

Explanation:

I was taking the test earlier

The word theory used in a scientific sense most closely means

Answers

The word "theory" used in a scientific sense most closely means a prediction, or hypothesis.

Science has shown that smoking causes cancer. Which is an example of howsociety responded to this information?
O
A. Cigarette smoking remains very common.
O
B. Cigarette smoking has become more common on television.
O
C. Warning labels are required on all packs of cigarettes.
O
D. Stores have continued to sell cigarettes.

Answers

Answer:

C

Explanation:
C/ warning labels are required on all packs
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