Answer:
Human cells contain two sets of chromosomes, one set inherited from each parent. Each cell normally contains 23 pairs of chromosomes, which consist of 22 autosomes (numbered 1 through 22) and one pair of sex chromosomes (XX or XY). However, sperm and ova normally contain half as much genetic material: only one copy of each chromosome. Each chromosome contains many genes, the basic physical and functional units of heredity.
Explanation:
what is metaphase and what does it do?
Answer:
Metaphase is the second stage of cell division, between prophase and anaphase, during which the chromosomes become attached to spindle fibers. A metaphase separates duplicated genetic material that is carried in the nucleus of a parent cell and then converts it into two identical daughter cells.
Answer:
Metaphase is a stage in the cell cycle where all the genetic material is condensing into chromosomes. These chromosomes then become visible. During this stage, the nucleus disappears and the chromosomes appear in the cytoplasm of the cell. As metaphase continues, the cells partition into the two daughter cells.
What Type: of cells go through the special cell division process of meiosis?
1. gametes
2. lymphocytes
3. neurons
4. hepatocytes
The special cell division process of meiosis is undergone by gametes, which are reproductive cells responsible for sexual reproduction. Thus, correct answer is option (1).
Meiosis is a special type of cell division that only takes place in organisms that reproduce sexually. , which are sex cells like eggs and sperm, are produced as Gametesa result of two sequential divisions. Gametes have half as many chromosomes as parent cells, ensuring that the offspring they create during fertilization will have the right number of chromosomes.
Gametes are created by meiosis to retain genetic variation in the population, as opposed to somatic cells, which go through mitosis to produce identical duplicates. Hepatocytes, lymphocytes, and neurons all go through mitosis or perform certain bodily roles; none of these cells go through meiosis.
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Which is a binary ionic compound?
O potassium bromide, KBr
O potassium hydroxide, KOH
O methane, CH4
O water, H20
Answer:
potassium bromide, KBr is a binary ionic compound.
the term describes a change of the sequence of a dna molecule.
Answer:
Genetic mutation
Explanation:
How does water affect Earth’s physical features?
Answer:
Water moving across the earth in streams and rivers pushes along soil and breaks down pieces of rock in a process called erosion. The moving water carries away rock and soil from some areas and deposits them in other areas, creating new landforms or changing the course of a stream or river.
Explanation:
Why do human can stand straight?
Answer:
[tex]because \: of \: the \: prescnce \: of \: bones \\ thank \: you[/tex]
Explanation:
The pelvis provides support for the spine and some body organs like legs containing lockable knee joints providing a column of support, bearing the weight of the head, neck and trunk, allowing us to maintain an upright position.
what happen to the matter during a phase changes
Answer:A phase change is a physical process in which a substance goes from one phase to another. Usually the change occurs when adding or removing heat at a particular temperature, known as the melting point or the boiling point of the substance. Removing heat from a substance changes a gas to a liquid or a liquid to a solid.
In mammals the digestive tract is made up of multiple
such as the stomach, pancreas and intestines. These all work together to form the
we use to digest food.
Answer:
The digestive system is made up of the alimentary canal (also called the digestive tract) and other organs, such as the liver and pancreas. The alimentary canal is the long tube of organs — including the esophagus, stomach, and intestines — that runs from the mouth to the anus.
In mammals, the digestive tract is made up of multiple organs such as the stomach, pancreas, and intestines. These all work together to form the alimentary canal we use to digest food.
The digestive system in mammals is a complex network of organs and structures responsible for breaking down food into nutrients that can be absorbed and utilized by the body. The digestive tract, also known as the alimentary canal or gastrointestinal tract, consists of several organs that collaborate to facilitate the digestion and absorption process.
Stomach: The stomach is a muscular organ that receives and churns food, mixing it with gastric juices containing enzymes and acids to begin the process of digestion. It plays a crucial role in breaking down proteins.
Pancreas: The pancreas is both an endocrine and exocrine gland. Its exocrine functions involve producing digestive enzymes that are released into the small intestine to further break down carbohydrates, proteins, and fats.
Mouth: The mouth is where food is chewed and mixed with saliva. Saliva contains enzymes that start to break down carbohydrates.
Esophagus: The esophagus is a muscular tube that carries food from the mouth to the stomach.
Small intestine: The small intestine is the longest part of the digestive tract. It is where most of the nutrients from food are absorbed.
Large intestine: The large intestine is shorter than the small intestine. It absorbs water and salts from food and stores waste products until they are eliminated from the body.
Rectum: The rectum is the last part of the digestive tract. It stores waste products until they are eliminated from the body.
The digestive tract is a vital organ system that is essential for the survival of mammals. It allows mammals to obtain the nutrients they need from food to stay alive and healthy.
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What type of feedback occurs when you intensify a variable? a. Positive b. Negative c. Neutral
Answer:
B.
Explanation:
the values that we give to the natural enviroment and people around you is A respect
B openess
C freedom
D all
pleaseeee help me
Answer:
D
Explanation:
why is the smooth endoplasmic reticulum unable to synthesize proteins?
Answer:
Why is the smooth endoplasmic reticulum unable to synthesize proteins? No ribosomes are attached to its surface. The liver is involved in detoxification of many poisons and drugs. ... Large numbers of ribosomes are present in cells that specialize in producing which of the following molecules
Explanation:
(c) Make a claim about the most immediate effect on the fused B-cancer cells if the fused cells are transferred to a growth medium that lacks a source of nitrogen.
Answer:
CLAIM: IF THE FUSED B CANCER CELLS ARE GROWN IN A MEDIUM THAT DOES NOT CONTAIN NITROGEN SOURCE, THE CELLS WILL STOP SYNTHESIZING PROTEINS AND THEIR LIFE SPAN WILL BE GREATLY REDUCED
Explanation:
The growth medium that was used to reproduce the fused cancer B cells contains nitrogenous compounds that serves as source of nitrogen for the production of nitrogenous bases of DNA, If the nitrogen source is removed, the DNA in the nucleus of the white blood cell will lack adenine and guanine, which are necessary for the synthesis of DNA molecules.
2. Nitrogen is an integral part of DNA and protein. Nitrogen is needed to produce nitrogenous bases that are found in DNA. The DNA molecule is the one that initiate and direct the synthesis of protein in living cells.
In the fused B cancer cells, DNA must be produced, so that the dividing cancerous cells can continue their uncontrolled division, this will keep the cells alive. Nitrogen is also needed for the continuous synthesis of the special protein that the fused B cell is producing.
Thus, if nitrogen source is removed from the growth medium used for the cultivation of fused B cells, then the cells will stop synthesizing protein, their life span will be greatly reduced and they will eventually die out.
the nucleic acid sequence in mrna is determined by
Answer:
the genetic code
Explanation:
which is the sequence of bases in dna which codes for the sequence of amino acids in protein molecules
what type of cell are fungi animals plants and protists made of
Answer:
eukaryotic cells
Explanation:
All cells fall into one of these two broad categories. Only the single-celled organisms of the domains Bacteria and Archaea are classified as prokaryotes—pro means before and kary means nucleus. Animals, plants, fungi, and protists are all eukaryotes—eu means true—and are made up of eukaryotic cells.
Describe what part of the virus affects a body system but not all the body systems
Answer:
Explanation:
no
Pack ice forms when frozen
seawater
a) rises from the deep zone to the surface zone.
b) sinks from the surface zone to the deep zone
c) moves onto the land.
d) is driven together by wind and waves.
Answer:
water in or taken from the sea.
Explanation:
water in or taken from the sea. AKA C.
The archer was shooting at the bullseye. What is the Best description of this attempt.
A. accurate but not prescise
B. Both precise and accurate
C. Precise but not accurate
D. Neither accurate nor precise
Answer:
b
Explanation:
the archer was taking their time and being precise
Which coast of North America would you expect you to have a cooler overall climate
Answer:
east coast
Explanation:
During the winter, land is much colder than the oceans. When the westerly winds blow over it, the air cools substantially. By the time it reaches the East Coast, the moist air is cold enough to convert into snow. Thus, the East Coast experiences extreme cold weather during the winter.
Answer:
East Coast
Explanation:
which layer of the integument has a small population of immune cells?
Answer:
The stratum basale
Explanation:
The stratum basale contains basal keratinocytes, immune cells such as Langerhans cells and T cells, and melanocytes that provide the skin with pigmentation.Apr 12, 2019
to prevent acid from seeping in the stomach, the stomach cells join one another via
The stomach and the cells that comprise it have a three-part protection system to protect from the acid contained in the stomach, comprised mostly of compact cell unions.
The stomach is one of the main digestive tract organs. Its job is to break down the food we ingest and pass it along to the rest of the digestive tract. To perform this action, the stomach secrets hydrochloric acid. However, the stomach itself is not damaged by this acid due to a three-part protective system comprised of:
Tight epithelial cell liningMucose BarrierBicarbonate secretionThe cells present in the epithelial lining of the stomach join one another via compact cell unions to form a closed barrier which is then covered by a thick Mucose barrier. This along with the secretion of bicarbonate which works to break up the acids present in the stomach and ingested, form a sealed barrier that protects the stomach from harm.
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when someone’s immune system overreacts to something harmless it’s called
in photosynthesis, water molecules are split into _______ and ______ atoms.
Answer:
1. hydrogen
2. oxygen atoms
Explanation:
What four substances are recycled during photosynthesis and respiration
Answer:
Carbon Dioxide, Glucose, Water, and Oxygen
Explanation:
Photosynthesis occurs in autotrophic green plants, some bacteria and algae. It uses pigments to absorb light energy to power reactions that make carbohydrates. Respiration is the reverse of photosynthesis because it breaks down carbohydrates to release ATP.
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true or false? the endosperm in a seed develops into the embryo.
False. The purpose of the endosperm is to provide nutrients for the embryo.
Which term describes an extensive network of tubes, sacs, and vesicles throughout a cell that provides transport as its main function
Why are bacteria called the borderline between plants and animals
How do enzymes affect Biochemical reactions?
Answer:
Enzymes are proteins that are able to lower the activation energy for various biochemical reactions. ... Enzyme catalysis. An enzyme catalyzes a biochemical reaction by binding a substrate at the active site. After the reaction has proceeded, the products are released
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in the human body, the brain regulates and controls all of the functions of the body. which organelle in a cell has a similar function?
Answer:
Nucleus.
Explanation: The nucleus is the brain of the organelle. It controls most of its functions and also holds the DNA for that cell.
What type of epithelial cells would you likely find on the surface of mucous membranes? Explain why
Answer:
simple columnar epithelial tissue or Stratified squamous nonkeratinized epithelium
Explanation:
Most mucous membranes contain stratified squamous or simple columnar epithelial tissue. The epithelial tissue sheet lies directly over the layer of loose connective tissue called lamina propria.
Why does DNA need to be replicated before the cell enters mitosis?
so the daughter cells can have DNA mutations
so the DNA can diversify in each daughter cell
so one daughter cell can have more DNA than the other
so each daughter cell has the same DNA as the parent cell
Answer:
So each daughter cell has the same D.N.A. as the parent cell
Explanation:
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