Answer:
Reducing the amount of light improves contrast, making the specimen "stand out" against the background. Some microscopes have an annular condenser, which is a plate under the stage that can be rotated. The plate consists of holes of different diameter.
Explanation:
how environmental factors can affect genetics
Answer:
Situational Genetics
Explanation:
The envirnment can control and manipulate species' genes through adaptation. An example of this is horse's teeth building resielnce to grind grass. In order to eat comfortably, horse prefer smushing their food. Over time, they have adapted to the environment by strengthening their teeth.
1- List the 3 functions of the Digestive System
2- list the 2 function of the exretory system
3- describe the path of food,beginning in the mouth
4- describe the path of urine formation begginning in the kidneys
5- how does the urinary system maintain homeostasis
Answer:
1. transportation, digestion, and absorption of food.
2. Remove and concentrate waste products from body fluids and return other substances to body fluids
3. Food starts to move through your GI tract when you eat. When you swallow, your tongue pushes the food into your throat.
4. Urine then flows through the nephrons, through a system of converging tubules called collecting ducts.
5. filtering out excess fluid and other substances from the bloodstream and secreting waste.
the first group of animals to colonize land was likely
Answer:
horses
Explanation:
what molecule that is created during photosynthesis is stored by the plant as energy for later use?
Glucose.
................
Genetic variation is needed for the long-term survival of a species.
True
False
This is a short question if anyone would be able to help me please i really need the help!!!!
What is it i hope i can helps you:(
why is it necessary to have 6co2 entering the chloroplast
Describe the following features of processes evaluation leaching zone of accumulation and hardpan. PLEASE HELP ME ITS DUE IN 10 MINS. NO LINKS!!!
Explanation:
As soils mature, they develop soil horizons as organic matter accumulates and mineral weathering and leaching take place.
The nitrogenous base adenice is found in all the members of which group
Answer:
ATP, RNA, NAD and DNA.
Explanation:
A nitrogenous base; it is an organic molecule containing a nitrogen, carbon and other atoms that has the chemical properties of a base that is why they are called as bases. The nitrogenous bases are; i) adenine, ii) guanine, iii) thymine, iv) uracil and v)cytosine.
Adenine is a nitrogenous base which is found in ATP, RNA. NAD, FAD and DNA. adenine pairs with thymine in DNA synthesis.
Do all cells (brain cells, skin cells, liver cells, etc) express the genes or make the same proteins
Answer:
yes
Explanation:
have a good day or night
the vestibular system relies on hair cells that are similar in structure and function to those found in the auditory system.
Answer:
There are five vestibular receptor organs in the inner ear: the utricle, the saccule, and three semicircular canals.
Explanation:
The Chemical composition of the cell membrane
Answer:
cell membrane
Explanation:
Cell membranes are composed primarily of fatty-acid-based lipids and proteins. Membrane lipids are principally of two types, phospholipids and sterols (generally cholesterol).
Explain why diseases result in symtoms
What's the only kind of parrot that can't fly?
what is the difference between biology and technology
Answer:
Biology as a subject studies living beings whereas biotechnology is a related branch of biology which deals with the living organisms to develop various products for human beings. To put it in simpler words, biology focuses on the life forms and life processes within the living organisms.ILL GIVE U BRAINLIEST IF YOU DO THIS
Discussion 4.3: Preventing Heart Disease
Heart disease is generally caused by a mix of genetics and poor lifestyle factors such as high stress, poor diet, and lack of exercise. What can you do to prevent heart attacks, high blood pressure, and high cholesterol?
Answer:
Live a healthy lifestyle and avoid anything that may trigger such Diseases.
Determine which of the following steps cannot occur in the rock cycle.
magma → sedimentary rock
sedimentary rock → metamorphic rock
metamorphic rock → magma
igneous rock → sediment
thanks :)
Answer:
magma > sedimentary rock
Explanation:
magma can only be cooled into an igneous rock but cannot directly be formed into a sedimentary rock.
4. How are histones related to
nucleosomes?
Answer:
Nucleosomes are made up of DNA that's wound around histones
Explanation:
Hope this helps.
Answer:
The nucleosome is the fundamental subunit of chromatin. Each nucleosome is composed of a little less than two turns of DNA wrapped around a set of eight proteins called histones, which are known as a histone octamer. Each histone octamer is composed of two copies each of the histone proteins H2A, H2B, H3, and H4.
What are the two ways that harmful algal blooms can negatively impact an ecosystem? (Site 1).
Answer:
SEE EXPLANATION FOR ANSWER
Explanation:
Eutrophication: An abundance of cyanobacteria (an algal bloom) is caused by an excess amount of nutrients in the water (phosphorus and/or nitrogen) which depletes the water of oxygen which is vital for plant an animal life. Oxygen is crucial for the survival of an organism, so when there is a lack of oxygen, the results can be fatal. That is why when there are reports of algal blooms, there are almost always mentions of an abundance of dead fish, birds, and other water dwelling organisms (these organisms live in the water, drink from it or use it as breeding grounds etc,) Not only that, but algal blooms produce toxins that can make animals and humans fall ill.
Dead zones: As stated previously, harmful algal blooms deprive the water of oxygen.This can lead to the extreme and create dead zones. Dead zones are zones in an aquatic body where the oxygen levels are not sufficient enough to support aquatic life. Hence why there is no life in dead zones because all of the fish either die, or leave.
Both affect the population of native species and the overall wellbeing of the bodies of water.
Answer:
Eutrophication: An abundance of cyanobacteria (an algal bloom) is caused by an excess amount of nutrients in the water (phosphorus and/or nitrogen) which depletes the water of oxygen which is vital for plant an animal life. Oxygen is crucial for the survival of an organism, so when there is a lack of oxygen, the results can be fatal. That is why when there are reports of algal blooms, there are almost always mentions of an abundance of dead fish, birds, and other water dwelling organisms (these organisms live in the water, drink from it or use it as breeding grounds etc,) Not only that, but algal blooms produce toxins that can make animals and humans fall ill.
Dead zones: As stated previously, harmful algal blooms deprive the water of oxygen.This can lead to the extreme and create dead zones. Dead zones are zones in an aquatic body where the oxygen levels are not sufficient enough to support aquatic life. Hence why there is no life in dead zones because all of the fish either die, or leave.
Both affect the population of native species and the overall wellbeing of the bodies of water.
Explanation:
put above answer line for anyone who can only see preview :)
Describing Cause and Effect Select the question mark. Choose the cause that brings about the effect. option a: the chicks hide in tall grass. b: not much grass grows on the nesting grounds. c: the chicks parents bring him good. d: the gray chick hatches.
Answer:
Cause: Not much grass grows on the nesting grounds
Effect: Some Arctic tern chicks have nowhere to hide
When the concentration of ________ in tissue fluid is too high, intracellular water moves into the extracellular fluid compartment.
When the concentration of electrolytes in tissue fluid is too high, intracellular water moves into the extracellular fluid compartment.
OSMOSIS:
Osmosis is the movement of water molecules from a region of higher concentration to a region of lower concentration through a semipermeable membrane. Osmotic principle is based on concentration gradient i.e. difference in concentration across a membrane. Electrolytes represent solute such as salts, ions, sugar etc. Therefore, when the concentration of electrolytes in tissue fluid is too high, intracellular water moves into the extracellular fluid compartment.Learn more at: https://brainly.com/question/2404589?referrer=searchResults
The Middle East and Eurasia (primarily Russia) have about 70% of the world's
Select one:
Оа.
natural gas reserves.
on
O b. coal reserves.
O coil reserves.
O d. peat reserves.
a. Natural gas reserves
describe the function of the denticulate ligaments
Answer:
The function of the denticulate ligament is the stabilize the spinal cord in the vertebral canal.
Give an example of display behavior exhibited by a territorial animal.
Answer:
Agonistic (aggressive) displays usually occur near the borders of a territory. When a strange howler monkey approaches the territory of others, resident males set up a tremendous din, warning the intruder off. Many songbirds sit on highly visible perches while singing, providing both auditory and visual displays.
After CO2 is produced by tissues, in what form is most of that carbon transported to the lungs for removal from the body
what does it mean when we say a gene is turned off?
the condition of having a diploid chromosome complement in which one chromosome lacks its homologous partner.
Monosomy: the condition of having a diploid chromosome complement in which one chromosome lacks its homologous partner.
A trisomy is a chromosomal disorder characterized by an additional chromosome, so the person has 47 instead of 46.
Nullisomic is a genetic condition involving the lack of both the normal chromosomal pairs for a species (2n-2).
So, the correct answer is 'Monosomy'.
Cryptosporidium parvum (C. parvum) is a single-celled, eukaryotic parasite that infects human cells in the digestive system and causes illness.
a. True
b. False
The statement 'C. parvum is a single-celled, eukaryotic parasite that infects human cells in the digestive system and causes illness' is TRUE. This parasite causes diarrhea.
Cryptosporidium parvum (C. parvum) is a single-cell protozoan that may cause severe self-limited diarrhea in immunocompetent individuals.
Cryptosporidium parvum develops its complete life cycle in the human intestines (also it can be found in animal intestines).
This species (Cryptosporidium parvum) is one of the six (6) known species of Cryptosporidium.
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If you see a bird flying toward you this information is most likely processed in the: a. avian lobe b. temporal lobe c. occipital lobe d. limbic system
If you see a bird flying toward you this information is most likely processed in the occipital lobe.
What is occipital lobe?Occipital lobe lies at the back of the brain and is responsible for the vision, colour and motion of an object. It also helps in memorizing the shape, structure or face of an object.
The occipital lobe is situated in the cerebrum part of the brain between the parietal and temporal bone.
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What is the term that describes the loud, high-pitched sound made with each inhalation that occurs when there is respiratory obstruction in the larynx or trachea