in human cells 2N = 46. how many chromosomes would you expect to find in a sperm cell? in am egg cell? in a white blood cell? Explain
Answers
Answer:
There will be 23 chromosomes in a sperm cell, 23 chromosomes in an egg cell, and 46 chromosomes in a white blood cell
Explanation:
Human cells are diploid in number i.e they exists in two basic sets (2N =46, where N is 23). So, cells of human body such as blood cells like white blood cells have two basic sets of chromosomes i.e 46 chromosomes, since they are produced by mitosis.
On the other hand, cells of humans involved in sexual reproduction such as the gametes (sperm and egg) have only one set of chromosomes since they are produced by meiosis - so they are haploid (N =23).
Answer:
Sperm=23
Egg cell=23
White blood cell=46
Explanation:
During cell division Meiosis produce haploid number of gametic chromosome 23.
The somatic cell contains 46 chromosome i.e diploid chromosome number. During cell division in meiosis gametes cells contains haploid number-23 chromosome which is half of the somatic cell chromosome.
During conjugation, haploid chromosome is donated by each parent to give a diploid organism with 46 chromosome number.
White blood cell contains 46 chromosome because it doesn't undergo cell division it is a somatic cell.
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b. Fourth degree trinomial
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Answers
Answer: a. Third degree polynomial
Step-to-step explanation:-
- The degree of a polynomial is the highest degree of its individual terms with coefficients not equals to zero.
Given polynomial :
We can see that the highest degree of x in the given polynomial is 3.
Therefore, the given polynomial is classified as a third degree polynomial.
beaker filled halfway with water. Describe what will happen next.
Answers
Polarity is defined as the separation of electric charge in a molecule or having an electric dipole moment due to the difference between negative and positively charged ends.
In the given experiment when one milliliter of the substance into a beaker is filled halfway with water, the substance will be seen as coagulating or not dissolving in the water.
The non-polar are the compounds or liquids that do not dissolve in the water. The non-polar molecules are the molecules, which are attracted to the alike molecules, rather than the water molecules.
The non-polar compounds have covalent bonds, in which the electrons are shared among the atoms of the compound.
The molecules of these liquids are repelled in the presence of water or are hydrophobic. These liquids do not dissolve in water.
Therefore, the liquid is hydrophobic.
To know more about the polarity, refer to the following link:
Answer:
Explanation:
Non-polar liquids are liquids that have covalent bonds in which the shared electrons are shared equally. The molecules of these liquids are repelled by the molecules of water and hence do not dissolve in water. Thus, non-polar liquid are hydrophobic (water dislike/insoluble in water).
When one milliliter of the substance is placed into a beaker filled halfway with water, the substance will be seen "compact" (not dissolving nor interacting) in the beaker of water.
Answers
brain
motor neuron
glands
stimuli
Answers
Answer:
In the group of a brain, motor neuron, glands, and stimuli, the glands can be considered as an odd one out.
It is because the brain, motor neuron, and stimuli come under a common biological system which is termed as a nervous system.
A nervous system is a network or complex of nerve cells that perform the function of transmitting nerve impulses from one body part to another.
It consists of a brain, spinal cord, and different types of nerve cells (such as sensory nerves, motor nerves et cetera).
In contrast, a gland is defined as an organ of cells which synthesize and release chemical substances (such as hormones, enzymes et cetera) either into the bloodstream (endocrine glands) or into the body cavities (exocrine gland).
Thus, the gland can be considered as the odd one out.
I took the test
Answers
Robert Hooke used a compound microscope to study tree bark, making important observations and coining the term "cell" in his book "Micrographia" published in 1665.
Robert Hooke, a renowned English scientist, used a compound microscope to study tree bark. In the 17th century, Hooke made significant contributions to microscopy and is best known for his book "Micrographia" published in 1665. In this book, he described his observations using a compound microscope, which had two or more lenses to magnify the specimen.
Hooke used a specially designed microscope with an adjustable lens system that allowed him to achieve high magnification and observe fine details of various objects, including tree bark. Using this microscope, he examined thin slices of cork and coined the term "cell" to describe the box-like structures he observed. Hooke's work with the compound microscope and his discoveries about cells laid the foundation for modern cell theory.
To learn more about Robert follow the link:
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The correct question is:
Which microscope did Robert Hooke use to study tree bark?