BIOLOGY HIGH SCHOOL

On a cold winter morning, a person waiting for the bus starts shivering. The muscles used in shivering produce extra heat that helps warm the body. Shivering to warm up illustrates which characteristic of life?

A.
getting energy

B.
growth

C.
adaptation to environment

D.
homeostasis

Answers

Answer 1
Answer: Shivering to warm up illustrates the adaptation to environment characteristics of the life.

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HIGH SCHOOL

If part of the xylem of a young oak tree is destroyed, which of the following functions would it interfere with most? A) conduction of water to the leaves



B) conduction of carbohydrates to the roots



C) absorption of carbon dioxide from air

Answers

Answer: A) conduction of water to the leaves

Explanation:

Xylem is a group of vascular tissues which support the plant. It conducts water and nutrients from the roots to the upper parts of the plant. A xylem system consists of tracheids, parenchyma cells, vessels and woody fibers. Xylem provides water to the leaves which aid in the process of photosynthesis, as water is an essential reactant of the process of photosynthesis.

Well the Xylem is the vascular tissue in plants that conducts water ect. So, I would say the answer is A.) Conduction of water to the leaves.

HIGH SCHOOL

How do skin cells form different types of tissues? A. Information in the DNA of the nucleus can tell skin cells how to develop and perform special functions, which causes a group of these cells to perform similar functions and become skin. B. Information in the RNA of the nucleus can tell skin tissues how to develop and perform special functions, which causes a group of these cells to perform similar functions and become skin.

Answers

A; information in the DNA of the nucleus can tell skin cells how to develop and perform special functions, which cause  a group of these cells to perform similar functions and become skin
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The Answer is A. Info in the DNA of the nucleus can tell skin cells how to develop and perform special functions, which causes and group of these cells to  perform similar functions and become skin. It's kind of like Inherited traits
HIGH SCHOOL

A farmer wants to harvest more than two varieties of crops at a time from his field. He has no idea about the modern methods of agricultural practices. Conduct a brief research on modern methods of agricultural practices and its advantages and suggest him to get the desired result.

Answers

Explanation:

in modren days a lot of new fertiliser are used for the better growth of crop ee new type of cultivation system

Vertical farming is the practice of producing food and medicine in vertically ... The modern ideas of vertical farming use indoor farming techniques and controlled-environment

HIGH SCHOOL

Minerals that contain the elements silicon and oxygen are called ______.

Answers

Silicates.
____________
HIGH SCHOOL

A student is observing a cell on a microscope slide and notices cell walls and membrane-bound organelles. The student concludes that the cells what?

Answers

The student conclude that the cell under the microscope is a plant cell because although animal cells also have membrane bound organelles, it doesn’t have a cell wall. So. It has to be a plant cell.
HIGH SCHOOL

2) The population of mice in a local forest ecosystem has recently died out due to disease. In the past, these mice were the main predators of the forest beetles. What is the best prediction about what will happen to the beetles?A)The drop in the mouse population will lead to a drop in the beetle population.EliminateB)The drop in the mouse population will lead to no change in the beetle population.C)The drop in the mouse population will lead to an increase in the beetle population.D)The increase in the mouse population will lead to an increase in the beetle population.

Answers

C; due to there no longer being a main predator, the beetle population will most certainly increase.
C that is the answer

HIGH SCHOOL

Meiosis occurs in a series of different phases and creates genetically unique reproductive cells. mc012-1.jpg Which process helps make meiotic cells genetically different and occurs during prophase I, but not during prophase II? A)fertilization,(B)independent assortment,(C)crossing over, (D)chromosome replication

Answers

Meiosis occurs in a series of different phases and creates genetically unique reproductive cells. The process which helps make meiotic cells genetically different and occurs during prophase I, but not during prophase II, is crossing over (C). Crossing over is the exchange of genetic material between two homogenous chromosomes. It is one of the final phases of prophase I. This process is called synapsis. It occurs when the matching regions on the matching chromosomes break and then reconnect to the other chromosome

The process of crossing over takes place in prophase I and creates genetic diversity in the meiotic cells whereas prophase II is devoid of any such process.

Further Explanation:

The type of cell division which helps in gamete production is meiosis. It starts with prophase I in which the cell contains duplicated chromosomes. The chromosome duplication occurs during interphase which is followed by prophase I.

In the prophase I, the homologous chromosomes align with each other resulting in a tetrad formation. As the chromosomes line up, the genetic material is interchanged between the chromosomes. This is called crossing over which allows the formation of genetically unique daughter cells during the process of meiosis. Crossing over enhances the genetic diversity among the chromosomes as the hybrid chromosomes formed after crossing over have unique patterns. During crossing over, synapse occurs which is the pairing of two homologous chromosomes. A crisscross structure is formed between the two non-sister chromatids. It is the point of contact where the genetic exchange takes place to form new combinations of alleles.

As the crossing over completes, the homolog pairs move towards the center of the cell or alignment and this stage is called metaphase I. The pairs separate during anaphase I and migrate to their respective poles keeping the sister chromatids together. By the end of the telophase I, two new haploid cells are formed.

As the meiosis II proceeds with prophase II, no chromosome duplication takes place. The chromosome condenses followed by the breakdown of the nuclear envelope. The spindle formation occurs and the microtubules bind to the chromosomes. The chromosomes containing the sister chromatids line up during metaphase II at the center and gets separated in the anaphase II. Finally, at the telophase II daughter cells are formed which are four in numbers with each containing different sets of chromosomes as a result of random segregation or crossing over.

Learn more:

  • Learn more about the treatment of eukaryotic cell with a drug brainly.com/question/10767798
  • Learn more about the proteins synthesis in a cell brainly.com/question/1420458
  • Learn more about exchange of gases by blood cells brainly.com/question/1213217

Answer Details:

Grade: High School

Subject: Biology

Chapter: Meiosis

Keywords:

Meiosis, prophase, metaphase, anaphase, telophase, crossing over, chiasmata, synapse, sister chromatids, non-sister chromatids, homologous chromosomes, chromosomes, alleles, genetic diversity, genetic variation, chromosome duplication.

HIGH SCHOOL

Rh incompatibility between a sensitized Rh+ woman and an Rh- fetus can cause hemolytic disease of the newborn. True False

Answers

Answer:False

Explanation:

Rh incompatibility,or Rh disease,occurs when a woman with Rh negative blood cells is exposed to Rh positive blood cells of the fetus and this leads to the development of Rh antibodies.This may lead to further complications in pregnancy such as fetomaternal haemorrhage.

HIGH SCHOOL

An eating disorder characterized by episodes of excessive eating followed by forced vomiting or the use of laxatives is called:

Answers

Bulimia nervosa is correct
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