Answer:In the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes. Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.
Chromosomes are not visible in the cell’s nucleus—not even under a microscope—when the cell is not dividing. However, the DNA that makes up chromosomes becomes more tightly packed during cell division and is then visible under a microscope. Most of what researchers know about chromosomes was learned by observing chromosomes during cell division.
Each chromosome has a constriction point called the centromere, which divides the chromosome into two sections, or “arms.” The short arm of the chromosome is labeled the “p arm.” The long arm of the chromosome is labeled the “q arm.” The location of the centromere on each chromosome gives the chromosome its characteristic shape, and can be used to help describe the location of specific genes.
What's metamorphism?
A) The process by which new minerals form from existing minerals that become unstable at Earth's surface
B) The process by which new minerals form from existing minerals as a result of elevated temperature or pressure
C) The process by which new minerals form as a result of biological processes in living organisms
D) The process by which new minerals form as a result of precipitation from an aqueous solution
Answer:
D) The process by which new minerals form as a result of precipitation from an aqueous solution
please helppp!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
B (nematocysts)
Explanation:
A nematocyst is a long, thin, coiled stinger. It has a barb that may inject poison. These tiny poison "darts" are propelled out of special cells. They are used to attack prey or defend against predators.
Have an awesome day friend! :D
Answer:
It is B the nematocysts they can defend against predators.
when fatty acid metabolism creates more acetyl-coa than can be handled in the citric acid cycle, the excess acetyl-coa is converted into ________.
Answer:
Ketone Bodies
Explanation:
If excess acetyl CoA is created and overloads the capacity of the Krebs cycle, the acetyl CoA can be used to synthesize ketone bodies.
Describe the structural make-up of a gene?
Answer:
Structure of gene:
The chemical structure of a gene comprises nucleotides. A part of DNA- genes are made up of A, T, G and C nucleotides
Explanation:
What is the primary purpose of a human community?
Answer:
to meet needs throught collective effort
Help me label these parts please
Answer:
1. Cell Body
2. Nucleus
3. Endoplasmic reticulum
4. Mitochondria
5. Dendritic Branches
6. Dendrite
7. Golgi Apparatus
8. Axon
9. Telodendria
10. Synaptic Terminals
Explanation:
I am smart like that :)
A partial marine food web is shown.
image
Which of the following lists only organisms that are secondary consumers in this food web?
A.
euphausilds, sweeps, water fleas, sea urchins
B.
crabs, pilchards, blennies, snappers
C.
blennies, sweeps, tiger sharks, dolphins
D.
bull kelp, sweeps, water fleas, dinoflagellates
Crabs, pilchards, blennies and snappers are the examples of secondary consumers.
Crabs, pilchards, blennies and snappers are considered as secondary consumers because they feed on primary consumer which feed on producers such as plants and algae. Secondary consumer are those organisms which feed on herbivorous organisms or primary consumers.
They can feed on producers due to different digestive system so we can conclude that crabs, pilchards, blennies and snappers are the examples of secondary consumers.
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What are biological associations
Answer:
In ecology, a biological interaction is the effect that a pair of organisms living together in a community have on each other. They can be either of the same species (intraspecific interactions), or of different species (interspecific interactions).
Explanation:
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The study of the properties and changes in matter and their relation to energy
a. Physical Chemistry
b. Biochemistry
c. Organic Chemistry
d. Inorganic Chemistry
Organic chemistry is the study of the structure, properties, composition, reactions, and preparation of carbon-containing compounds. Most organic compounds contain carbon and hydrogen, but they may also include any number of other elements (e.g., nitrogen, oxygen, halogens, phosphorus, silicon, sulfur).
The study of the characteristics and changes of matter, as well as the interactions between matter and energy, is the focus of the field of chemistry known as physical chemistry. Therefore, the correct option is A.
It integrates ideas from physics and chemistry to understand the molecular behavior of molecules and atoms. Thermodynamics, kinetics, quantum mechanics, spectroscopy, and statistical mechanics are among the subjects studied by physical chemists.
Their work advances many disciplines, including biology, chemical engineering and materials science. By understanding the fundamental ideas of physical chemistry, scientists can create new materials, predict and explain chemical reactions, and understand the subtleties of molecular interactions in many systems.
Therefore, the correct option is A.
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What is an allele? View Available Hint(s)for Part A a variety of pea plant used by Mendel an alternative version of a gene the recessive form of a gene the dominant form of a gene a type of chromosome
Answer:
An allele is one of two (or more) versions of a gene. Each individual inherits one allele from each parent. Alleles code for different trait an individual has, such as eye color, skin color, hair type, etc.
Explanation:
Which structure is found in all eukaryotic cells?
flagella
large central vacuole
cilia
Golgi apparatus
Answer:
the Golgi apparatus is the answer
The autoimmune disease that results from the body attacking tissues such as the heart or lungs is called
Answer:
RA
Explanation:
how do you use fossils to see change
Fossils help show use how the earth looked like millions of years ago, Plant fossils show use what the wild life would have ate and the nutrients they had. it also helps show the bone structure of animals helping us create an actually picture of the past.
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an adaptation of the epithelial cells of the proximal convoluted tubule for reabsorption is
Why is apoptosis important to cells.
PLZZZZZZZ help me and thank you
Answer:
it's in the book hehe 11111111111111
How to determine recombination frequency.
Answer:
= # recombination/total progeny ×100
the sympathetic chain of ganglia is found at the __________ levels of the spinal cord.
Answer:
lateral and venteral
Explanation:
the chain extends from the upper neck down to the coccyx, forming the upward coccygeal gangilion
The sympathetic chain of ganglia is paravertebral and is loaded just ventral and lateral to the spinal cord. As they extend from the upper bottom forming an unpaired ganglion.
They function as a major part of the sympatric nervous system. Hence they function at various levels of the spinal cord as the cervical, the thoracic, lumbar, sacral, and coccygeal.Learn more about the chain of ganglia is found at the.
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active transport moves mineral ions into root hair cells through cell membrane proteins. Explain how protein molecules move ions across a membrane during this process. (3marks)
Explanation:
Small and nonpolar (hydrophobic) molecules can freely pass through the membrane, but charged ions and large molecules such as proteins and sugars are barred passage.
Nonpolar and small polar molecules can pass through the cell membrane, so they diffuse across it in response to concentration gradients.
Glucose plus glucose with what makes maltose and water.
Answer:
In the dehydration synthesis reaction depicted above, two molecules of glucose are linked together to form the disaccharide maltose. In the process, a water molecule is formed.
Explanation:
this is copied so be careful but hope it helps
what is the difference between volume measurements and capacities
what is the purpose of a broth in a microbiology laboratory
Which of the following help to break down proteins?
Answer:
b. Pepsin and trysin
Explanation: is correct
An survey makes use of evidence, such as the footprints left behind by animal, to follow animals that re difficult to track.
The correct word to fill the gap would be indirect.
In other words, an indirect survey makes use of evidence, such as the footprints left behind by animals, to follow animals that are difficult to track.
Ecological surveys are of 2 types:
DirectIndirectDirect ecological surveys have to do with studying phenomena directly and recording whatever that is observed.
Indirect surveys involve an indirect way of studying phenomena. The signs left by phenomena are observed and logically used to make deductions about such phenomena.
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Which statement explains why ammonites are a good example of an index fossil?
Answer:
Ammonites existed only in the oceans.
Explanation:
Index fossils serve as a relative dating marker for geologic time periods and the rocks formed at those times. The fossils are of species that lived for only a short while, though that could be millions of years, and were widespread on the Earth. Ammonites are good index fossils for several reasons. First, they are easily identified by their spiral shells.
The statement explains why ammonites are a good example of an index fossil
Ammonites existed only in the oceans.
What is an Index fossil?
Index fossil are plants and animals which have been preserved in rock
surfaces over a long period of time and are usually characteristic of a
particular geographical location.
Examples of Index fossils include:
Ammonites Brachiopods, Graptolites NanofossilsTrilobitesAmmonites are animal fossils which are characteristic of the marine
environment.
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What health-related careers would be of most interest to you? How would learning more about anatomy be helpful for that career?
Most of Earth's energy comes from the Sun. Where does the rest come from?
a. internal heat
b. nuclear fusion
c. biomass
d. fossil fuels
Explain
Answer:
The answer is nuclear fusion
Explanation:
Solar energy is created by nuclear fusion that takes place in the sun. Fusion occurs when protons of hydrogen atoms violently collide in the sun's core and fuse to create a helium atom.
How long does the eclipse of an earth-like planet take?
Which part of the cell does this illustration represent?
Calvin cycle center
mitochondria
cytoskeleton
endoplasmic membrane system
Answer:
Mitochondria
Explanation:
The mitochondrion is an organelle found in both animal and plants cells. However, it is not found in prokaryotic cells. The mitochondrion is most famously known as the powerhouse of the cell because it produces ATP. The defining visual feature of mitochondria is the wavey-like pattern within the organelle.
how many rounds of dna replication are there in a meiotic cell cycle?
Answer:
Two rounds
Explanation:
Meiosis is characterized by one round of DNA replication followed by two rounds of cell division, resulting in haploid germ cells. Crossing-over of DNA results in genetic exchange of genes between maternal and paternal DNA.
