when does crossing over occur? how many chromatids are involved? how many homologous chromosomes?
Answer:
The normal human karyotype is made up of 46 chromosomes: ... The 2 sister chromatids are linked mainly by a paracentric heterochromatin ...
Explanation:
Collagen has: Group of answer choices pyrrolidine rings, which stabilize helices and glycine residues at every third position (because only glycine residues can fit inside of the super-helical cable). rings of glycine, which can stabilize helices and proline residues at every third position (because only proline residues can fit inside of the super-helical cable). rings of proline and glycine residues at every second position. pyrrolidine rings, which can push off and destabilize the helix and glycine residues at every second position (because only glycine residues can fit inside of the super-helical cable).
Collagen has: A. pyrrolidine rings, which stabilize helices and glycine residues at every third position (because only glycine residues can fit inside of the super-helical cable).
Collagen can be defined as the main or most abundant structural protein found in the bones, tendons, connective tissues, skin and muscles of a living organism such as a human being.
Basically, collagen is a chemical substance (protein) made up of amino-acids and it holds the human body together.
Hence, collagen typically makes up about 30% of the proteins contained within the human body.
Additionally, collagen comprises the following specific amino-acids:
Hydroxyproline.Glycine.Arginine.Proline.Each of the three chains of a collagen triple helix with 3.3 residues per turn, is normally stabilized by the steric repulsion between the pyrrolidine rings of hydroxyproline, glycine and proline residues.
Therefore, the pyrrolidine rings of collagen helps in the stabilization of helices and glycine residues, at every third position because the only residue that fits inside of the super-helical cable is the glycine residues.
Read more: https://brainly.com/question/3105041
What is a physical property? Give 2 examples.
Answer:
any measurable property like water and dirt
Explanation:
Answer:
(Hope this helps can I pls have brainlist (crown)☺️)
Explanation:
A physical property is a feature of matter that is independent of its chemical composition. Density, colour, hardness, melting and boiling temperatures, and electrical conductivity are all examples of physical characteristics.
Density, colour, hardness, melting and boiling temperatures, and electrical conductivity are all examples of physical characteristics. There is a change in the physical condition, form, or characteristics of the material in each of these cases, but no change in its chemical composition.
Somoene please help and explain how to read the graph!!
Answer:
Whats going on is that you have a specific amount of enzyme that can do a specific amount of work. Think of it like a hotdog stand. the enzyme would be you and your substrats are your hot dogs and buns. You can only go as fast as the materials you have. If you have more materials than hands you can only go as fast as you can make them. To many substrates and you enzyme rate will cap out at maximum speed.
Explanation:
The plot shows rate of reaction of an enzyme as a function of the concentration of substrate. At stage B, the rate flattens and becomes constant, which means there's too much substrate for the enzyme to handle. So the fourth statement is false - the rate of reaction cannot be increasing.
The formula for the volume V of a cylinder is V = πr2h where r is the radius of the base and h is the height of the cylinder. Solve the formula for h. Then find the height of a cylinder with a volume of 36πcm3 and a base with a radius of 3 cm. Please help me its due today
Answer:
h = 4 cm
Explanation:
First, we solve for h.
h=[tex]\frac{V}{pi*r^2}[/tex]
h = unknown
v = 36*pi
r = 3 so r^2 = 9
[tex]\frac{36*pi}{pi*9} = 36/9 = 4[/tex]
of all the flexor muscles of the forearm, the __________ is the shortest.
Answer:
pronator teres
Explanation:
WHICH RESERVOIR OF THE CARBON CYCLE CHANGES THE MOST AND THE QUICKEST?
(please helpp)
the ocean is the reservoir that changes the most and the quickest
The reservoir of the carbon cycle that changes the most and the fastest is the atmosphere, as the atmospheric carbon pool changes due to the constant release of carbon dioxide through household sources and cellular respiration.
What is the significance of the carbon pool?The carbon pool maintains the carbon ratios in the earth, as the atmosphere is the reservoir of the carbon cycle that changes the most and quickest due to burning fossil fuels, usage of household electric appliances, usage of more vehicles that release carbon dioxide, deforestation, etc. If the carbon pool is not maintained and becomes uncontrolled, the environment will be harmed due to global warming, etc.
Hence, the reservoir of the carbon cycle that changes the most and the fastest is the atmosphere, as the atmospheric carbon pool changes due to the constant release of carbon dioxide through household sources and cellular respiration.
Learn more about carbon here.
https://brainly.com/question/22530423
#SPJ2
An Irish or white potato is a stem, but a sweet potato is a root. How can you tell?
Answer:
All stems have nodes, internodes, and axillary buds; these features distinguish them from roots and leaves, which do not have them. In Irish or white potato plants, several internodes at the tips of stolons become tubers.
Explanation:
Which statement describes a prokaryotic cell?
A.) An amoeba with a vacuole
B.) A blood cell from an animal
C.) A plant cell with chloroplasts
D.) A bacteria without a nucleus
Please help urgent due today
Answer:
D. they return nitrogen to the system
Explanation:
hope it helps
The characteristic of a nerve cell that relates directly to its function in receiving and
transmitting nerve impulses is its
a. long extensions.
c. ability to change shape.
b. flat shape.
d. ability to engulf and destroy bacteria.
The axon is the long cytoplasmic extension and the dendrons are the short cytoplasmic extensions. The extensions are responsible for receiving and the transmission of the nerve impulses. Thus, the correct answer is option A. Hope it's helpful to you !
Explanation:
Wood storks thrive in wetland environments by feeding on small freshwater fish.
Wood storks are absent in the Everglades ecosystem because the environment is
no longer suitable to sustain abundant wading bird life. What term describes a
Wood Stork?
#1-Indicator species
#2-Keystone species
#3-Endemic species
#4-Invasive species
Answer:
Invasive Species
Explanation:
“The environment is no longer suitable to sustain abundant wading bird life”
Regions that have similar climate characteristics can be widely spread apart, but typically have which of the following in common?
A: Varying altitudes and similar precipitation
B: Corresponding latitudes and continental locations
C: Corresponding temperature and wind patterns
D: Similar ocean currents and vegetation
C: Corresponding temperature and wind patterns are in common.
What are the 3 characteristics of climate?The simplest way to describe climate is to look at average temperature and precipitation over time. Other useful elements for describing climate include the type and the timing of precipitation, amount of sunshine, average wind speeds and directions, number of days above freezing, weather extremes, and local geography.
Climate features also include windiness, humidity, cloud cover, atmospheric pressure, and fogginess. Latitude plays a huge factor in determining climate. Landscape can also help define regional climate. A region's elevation, proximity to the ocean or fresh water, and land-use patterns can all impact climate.
Learn more about the climate here: https://brainly.com/question/24793273
#SPJ2
The cells in this leaf are making their own energy by the process of
a
respiration, where oxygen and sunlight at Q and R are taken in and then converted into carbon dioxide and glucose at S and T.
b
photosynthesis, where carbon dioxide and sunlight at Q and R are taken in and then converted into glucose and oxygen at S and T.
c
photosynthesis, where glucose and oxygen at Q and R are taken in and then converted into water vapor and thermal energy at S and T.
d
respiration, where carbon dioxide and oxygen at Q and R are taken in and then converted into thermal energy and methane gas at S and T.
Answer:
B is the answer. Glucose and oxygen are given off during Photosynthesis
The cells in this leaf are making their own energy by the process of photosynthesis, where carbon dioxide and sunlight at Q and R are taken in and then converted into glucose and oxygen at S and T.
What do you mean by photosynthesis?Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism's activities.
In plants and algae, which developed much later, photosynthesis occurs in a specialized intracellular organelle—the chloroplast. Chloroplasts perform photosynthesis during the daylight hours. The immediate products of photosynthesis, NADPH and ATP.
Photosynthesis is critical for the existence of the vast majority of life on Earth. It is the way in which virtually all energy in the biosphere becomes available to living things.
Learn more about photosynthesis:
https://brainly.com/question/29764662
#SPJ6
How do your sensory organs help you to maintain homeostasis?
Answer:
Hi
Explanation:
“Sensory cues influence homeostasis by modulating hormone secretion. ... In step 1, sensory cues change the activity of sensory neurons. In step 2, the sensory information is processed and transmitted, which leads to step 3, where neuro- or nonneuronal endocrine cells secrete hormones required in maintaining homeostasis.”
Day 1 Values and beliefs
What is the difference between a value and a belief?
Answer:
Values are a culture's standard for discerning what is good and just in society. Values are deeply embedded and critical for transmitting and teaching a culture's beliefs. Beliefs are the tenets or convictions that people hold to be true
The diagram shows the structure of starch, a complex carbohydrate
Answer:
Glucose is monomer of starch
Explanation:
Starch is polysacheride and glucous is monosaccharide glucose molecules link with glycosidic bond to form starch so c is your answer
what is the purpose of a conclusion
Answer:
To wrap up the entire writing, and bring it to, well, a conclusion. It usually states loud and clear what this writing means, and what it’s supposed to teach a reader, and kind of ties it all up. A loosely constructed conclusion makes it seem like there’s more, and that this can’t be it (This can be good for a sequel, however the opposite for most articles).
Hope This Helped!
what type of growth is this how could you tell
what weather factor is also a meausurement of energy held within the air?
Answer:
Answer:Temperature is the amount of heat energy contained in the air, and we measure this in degrees.
Mark me as the brainlist
Which evidence supports viruses being classified as living things?
O They are only made of proteins.
O They can enter cells.
They evolve over time.
O They spread between organisms.
Answer:
They are made up of protein.
Explanation:
Through out the cells life they all need protein to keep function.
The stoneflies in the food chain are
they are formidable carnivores and are primary carnivores
Describe the nucleus of an atom.
Answer:
The atom consists of a tiny nucleus surrounded by moving electrons. The nucleus contains protons, which have a positive charge equal in magnitude to the electron's negative charge. The nucleus may also contain neutrons, which have virtually the same mass but no charge.
Explanation:
(d) Most aphids do not have wings when they hatch. After sevezi generators, some as
hatch which have wings and can fiy
Explain the advantage to the aphid of being able to fly
P
Answer:
The ability of flight allows them to migrate to different plants if needed. They can only leave a plant and walk away if there is a predator or if their food source's quality has deteriorated, otherwise they remain on their original host plant until then.
The biotic factors of the North American ecosystem that influence lodgepole pine populations are
Space, water, and climate all help determine a species population.
- BRAINLIEST answerer ❤️✌
does carbonation slow the rate of alcohol absorption?
Answer:
a carbonated mixer had varying effects on the alcohol absorption rate. 14/21 subjects absorbed the alcohol with the carbonated mixer at a faster rate, with 7 subjects showing either no change or a decrease in rate.
Explanation:
Similarities between eukaryotic cells and prokaryotic cells
this is a chart I used a long time ago and help me learn this assignment when I was younger I hope this helps
PLEASE HELP ASAP!!
How does the friction affect the total time a pendulum is in motion? And what could cause this friction in the real world?
Answer: Friction slows down the swing of the pendulum until it fully stops.
I'm not sure what to put for the next question
the influx of _______ ions initiates a neuron to fire an action potential.
Answer:
what are the choices
Explanation:
or is this typing
Nitrogen is used for the synthesis of plant proteins and other compounds True / False
Answer:
True
Explanation:
Its true because nitrogen is required for production of chlorophyll, nucleic acids, and enzymes. Nitrogen is essential for plants to synthesize amino acids, which are the building blocks for protein synthesis.