Answer:
A. 1.2
Explanation:
Normally, a human body cell contains 46 chromosomes - 23 inherited from the father and the same number from the mother.
Most of the human DNA, or human genes, are located in the chromosomes.
Each metaphase chromosome consists of:
two sister chromatids containing one DNA molecule each, and since they are formed by replication, these molecules are completely identical in gene content; that is why chromatids are called sister chromatids; two centromeres, one on each chromatid.
Oxygen is released from the red blood cells into the:
A) Tissues
B)Lungs and exhaled
C)white blood cells
D)Bone marrow
Besides controlling what goes in and out of the cell, what other two jobs does the cell membrane have?
Answer:
It protects the cell by acting as a barrier.
receives chemical messengers from other cell.
Explanation:
Cell membrane act as a barrier which keep harmful substances to enter the cell and prevents substances to go out of the cell. It also receives chemical messengers and signals from other cell. This cell membrane is responsible for controlling of the flow of substances in and out of the cell. It also helps the cell in cell mobility from one place to another.
Chromosome structure can be microscopically observed best duringShow Options a. telophase b. anaphase c. prophase d. metaphase 1
Answer:
c. Prophase
Explanation:
Because during prophase, chromosomes secrete water & become short& stout
You have isolated a highly lethal toxin from an octopus that you have reason to believe binds with high affinity to the pore opening of a voltage-gated sodium channel. To determine the effect of toxin binding, you perform a _______ experiment.
Answer:
To determine the effect of toxin binding, you perform a Competitive Binding Experiment
Explanation:
Competitive binding experiments are very relevant when matters relating to cellular and or molecular toxicity are concerned.
They are used to determine the binding of a single concentration of labeled ligand in the presence of various concentrations of unlabeled ligand.
They are important because:
1. Validate a direct binding assay
2. Confirm whether or not a drug binds to the receptor
3. determine and explore how low-affinity drugs and receptors interact and it's resultant effects
Cheers
What's the recipe for success?
Answer:
In my opinion the recipe for success would be determined by your mindset due to the fact that your mind conducts your next move if your mind stays focused on success how could you fail? You have to believe that you can succeed so that if a tasks would come to you, you wouldn't be phased by it because you believe you can already do it without even have done it .
Explanation:
Read the section "Seeds." Which sentence from the section states the main idea about seeds? A The life cycle of flowering plants begins with a seed. B The outside of a seed is called a shell. C The wind blows some, and others float on water. D The next phase starts when a seed gets someplace it can start growing.
Answer:
A The life cycle of flowering plants begins with a seed.
Explanation:
Seeds are structures found only in a group of plants called higher plants, comprising of gymnosperms and angiosperms. Seeds are the developed/fertilized ovules of a plant.
Seeds are basically the reproductive unit of the angiosperms, also called FLOWERING PLANTS i.e. plants that produce flowers (reproductive structures). This means that the life cycle of flowering plants begins with the germination of the EMBRYO in a SEED.
When did the mass extinction occur? (Name the era and period)
Answer:
Explanation:
The first mass extinction is called the Ordovician-Silurian Extinction. It occurred about 440 million years ago, at the end of the period that paleontologists and geologists call the Ordovician, and followed by the start of the Silurian period. In this extinction event, many small organisms of the sea became extinct.
Answer:
at the beginning of this era
Explanation:
If a man and his wife are both heterozygous Type A, what is the probability of blood types that their offspring would have
PLEASE HELP WILL MARK BRAINLIST!!
QUESTION 3
Refrigerators and freezers which contain biohazards must
A. remain on building power
B. have locks
C. be separated
D. be labeled
Answer:
hey i hope this help
Explanation:
These pathogens include, but are not limited to, hepatitis B virus (HBV) and ... Contaminated Laundry means laundry which has been soiled with blood or other ... (3) Any other procedure involving the potential for occupational exposure to ... Food and drink shall not be kept in refrigerators, freezers, shelves, cabinets
Use the map below to answer the following question:
Map of Europe and North Africa labeled, Spread of Christianity. Dark green indicates Christian areas, 325 AD. The dark green areas are small, isolated patches surrounding the Mediterranean Sea. Light green indicates Christian areas added by 476 AD. Most of Spain, Gaul, Italy, Greece, and Asia Minor are light green. The light green extends to the European inland, and as far north as parts of Great Britain. It also extends to part of Egypt, Syria, and the North African Mediterranean coast. A grey line indicates the boundaries of the Roman Empire, 476 AD. This line extends around the Mediterranean, from North Africa in the south, beyond Jerusalem to the east, and into northern Gaul.
© 2012 The Exploration Company
Which statement can be said to be true, after examining the map?
In 476 AD, most of Africa practiced Christianity.
In 476 AD, Christianity had not spread to most of Africa.
In 476 AD, Christianity had not spread to most of Europe.
In 476 AD, most of Asia practiced Christianity.
Answer:
I think it’s B-
Explanation:
Answer:
the corrct answer is b
Explanation:
I just did the pretest lol
2. What molecules do cells need to function?
Answer:
Complex organic food molecules such as sugars, fats, and proteins are rich sources of energy for cells because much of the energy used to form these molecules is literally stored within the chemical bonds that hold them together.
Explanation:
What is the name of the approach to biological research that integrates data from multiple levels of complexity
Answer:
systems (system biology)
Explanation:
Systems biology can be defined as a methodology whose interest is to understand the high scale levels of complexity in biology (i.e. organism level, tissue level, cell function, etc) by integrating information/data from different sources, and thus examine the interaction between biological components. This approach is contrary to reductionism, which is another approach used in biology research. Therefore, systems biology is a holistic approach aimed at modeling complex biology systems by applying computational and mathematical methods, enabling to understand biological systems.
Describe the structure of vertebrate sensory organs!!!
Answer:
The vertebral column, or backbone, is made up of a series of repeating, or metameric, structures called vertebrae (singular, vertebra) that extend from the head to the tail along the dorsal (top) side of the body. The function of the vertebral column is to provide the central support structure of the endoskeleton, allowing an organism to hold its shape. It also serves to house and protect the spinal cord that that lies within the column.
During the second stage of aerobic cellular respiration, which molecule combines with the products of the first stage?
Without genetic _____, natural selection could not occur.
A) variation
B) sameness
Answer:
Im pretty sure it's A
Explanation:
how to reduce levels of carbon dioxide in the atmosphere
Answer:
create less Co2 emissions and boost our oxygen supply.
Explanation:
which structure does not belong to the pulmonary circuit?
A) left ventricle
B) right atrium
C) right ventricle
D) pulmonary trunk.
please help and define the difference in pulmonary circuit and pulmonary circulation. thanks
Answer:
which structure does not belong to the pulmonary circuit?
A) left ventricle
B) right atrium
C) right ventricle
D) pulmonary trunk.
please help and define the difference in pulmonary circuit and pulmonary circulation. thanks
Pulmonary trunk does not belong to pulmonary circuit.
What is pulmonary circuit?The circulation provides oxygen and blood to all the parts of the body. The circulation is of two types pulmonary circulation and systemic circulation. When blood moves from heart to other organs it is called systemic circulation.
When blood moves from heart to lungs is called pulmonary circulation. The circulation involves four chambers such as left atrium, left ventricle, right atrium and right ventricle.
Pulmonary trunk is not a part of pulmonary circuit. Blood will flow from auricles to ventricles.
Therefore, Pulmonary trunk does not belong to pulmonary circuit.
To learn more about circulatory system, refer to the link:
https://brainly.com/question/10103458
#SPJ2
Three hundred years ago, the amount of CO2 flowing into the atmosphere was equal
to the amount flowing out of the atmosphere. This is not true today.
True
False
will mark brainliest !!
how can advances in medical technologies affect your life in the global population?
Answer:
The planet could possibly become full but more people would live happy lives.
Explanation:
explain the identufication and nomeclature
Fuel wood is particularly important in many developing countries, which leads to deforestation and overuse of many species trees. Brainstorm two ideas that could help to reduce fuel wood demand, and explain how your ideas would contribute to sustainability of forest resources.
Answer:
My ideas are the following:
1. Maintain clean cardboard and paper discards to be subsequently recycled
2. Reforest the degraded areas using native species with rapid generation times to be subsequently reutilized
Explanation:
In the home it is possible to sort waste materials, including cardboard and paper. These waste products are made of 100 % recyclable materials but only when they are clean. For efficient recycling purposes, it is therefore necessary to maintain clean both materials (for example, by removing plastics or other materials attached to cardboard and paper). Moreover, reforestation can be a sustainable and cost-effective method for protecting native trees in developing countries. In these countries, economic issues may hamper the adoption of reforestation techniques, thereby new areas may be deforested to obtain more fuelwood. To solve this problem, it is possible to reforest vast areas by using native trees that exhibit rapid generation times, which may then be used as an alternative source of sustained raw material.
Among the microbes responsible for producing fermented foods, the two most prominent groups are the lactic acid-producing bacteria and yeasts that produce _________.
Answer:
Alcohol
Explanation:
Fermentation is a type of anaerobic respiration employed by organisms like yeast and certain species of bacteria. As stated in this question, YEAST and the BACTERIA that produces lactic acid as a product are the two major microbes that undergoes this fermentation process.
However, YEAST (a unicellular fungus) undergoes fermentation to yield alcohol and CO2 as its product. Yeast breaks down sugar molecules into ethanol (C2H5OH) and carbon dioxide (CO2) in its cells enabling it to be used in the production of fermented foods like cheese, beer etc.
Low lying areas in watersheds are at increasing risk of flash flooding. Explain why this is happening.
Answer:
The runoff threshold is the amount of effective precipitation of a certain duration that falls on the basin and is sufficient to cause shallow conditions at the outlet of the basin.
Explanation:
Flooding is a temporary water cover
land that is not usually covered by water.
* This includes floods that cause:
◦ Rivers
◦ Mountain streams
◦ Torrential watercourses
◦ As well as floods caused by the sea on the coast
areas
Plssss help I will Brainly you
Answer:
C
Explanation:
the right answer is C
Compare and contrast the cell membrane with the cell wall. *
Explanation:
For one, the cell wall is found only in plant cells, as it needs more protection. The cell wall is also found in the cells of plants, fungi, and bacteria. It can also be found rigid or smooth.
The cell membrane is found in both plant and animal cells. It controls what enters and leaves the cell. It surrounds the cytoplasm of the cell.
The diagram reveals that lipids and proteins are both parts of cell membranes. They have different functions because lipids work to А remove nucleic acids from the cell membrane, and proteins work to hold the cell membrane together. B hold the cell membrane together, and proteins move chemicals across the cell membrane. С stiffen the cell membrane, and proteins create fibers that attach to the ends of the lipids. D move chemicals across the cell membrane, and proteins work to store water in the cell membrane.
Answer:
There is no diagram in this question but the question can still be answered without it.
B. hold the cell membrane together, and proteins move chemicals across the cell membrane
Explanation:
The fluid mosaic model, which describes the structure of the cell membrane, reveals that it contains both lipids and protein constituents. These components, however, performs different functions in the cell membrane of organisms.
The lipid component of the cell membrane, which comprises of glycolipids and cholesterol, hold the cell membrane together while proteins called transport proteins help move chemicals across the cell membrane.
What is the main difference between food chains and food webs?(1 point)
A. Food webs are more complex than simple food chains.
B. Food chains focus on energy transfers, but food webs do not.
C. Food chains focus on the internal energy cycles of animals, unlike food webs.
D. Food webs do not show connections between animals like food chains.
Question: "What is the main difference between food chains and food webs?"
Answer: "The best way to analyze this question would be to compare the two diagrams; when looking at a food chain, it is much easier to understand as to easily seeing the organism on the bottom (start) and the top (end) of the food chain, depending on its ecosystem. However, a food web on the other hand branches off into more complex details of every living thing connected to each other and how their roles effect the 'web'. So, this being said, I would say out of the options given above, Option A is the best choice."
What type of photoreceptor cell allows us to see gray tones in dim light, and provides our peripheral vision
Answer:
Rods.
Explanation:
There are two types of photoreceptor cells, the cones, and the rods.
The cones adapt our vision to bright light and allow us to see colors. On the other hand, rods photoreceptors make us see in the dark and do not perceive many colors; that is why we can not distinguish colors in the dark. Also, they provide peripheral vision since they are on the external edges of the retina.
write the one function of each of the following- arteries
Explanation:
Arteries carry blood away from the heart. Pulmonary arteries transport blood that has a low oxygen content from the right ventricle to the lungs. Systemic arteries transport oxygenated blood from the left ventricle to the body tissues.
Could emigration or immigration have played a major role in determining the size of the reindeer
population? Explain. Think about where these reindeer were and whether they could swim that far
Answer:
Yes.
Explanation:
Yes, emigration or immigration have played a major role in determining the size of the reindeer population in specific area because immigration is done by the animals in search of food. The animals moves from one region to another in search of food so due to this movement the population of reindeer decreases in that specific area. Reindeer are good swimmers so due to this ability they cross the vast Yukon River which is half mile wide.