mammalian cells that are membrane-bound, circular, biconcave discs that have no nuclei at maturity are called __.
Blood cells are membrane-bound, circular, biconcave discs that have no nuclei at maturity.
What are blood cells?Blood cells are round, disc shaped cells, that constitute the blood.
There are three types of blood cells:
White blood cells (monocytes, lymphocytes, neutrophils, eosinophils, basophils, and macrophages) Red blood cells (erythrocytes)Platelets.The red blood cells help to carry oxygen to the body.
White blood cells help in immunity of the body.
The platelets involve in the process of hemostasis.
Thus, the correct option is blood cells.
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what medications test positive for methamphetamemes?
Answer:
Ritalin (methylphenidate) and Adderall are used to treat ADHD, and are well known to cause a false positive for amphetamines and methamphetamines.
which of these three human chromosomal abnormalities--down, patau, or edwards syndrome--has the longest average survival time? why is that the case?
Answer:Down syndrome, because trisomy 21 involves the smallest chromosome of the three.
Explanation:
Somebody help me please
Answer:
stage clips - b is the correct option.
revolving nosepiece - c is the correct option.
diaphragm - a is the correct option.
i decided to be a parasitologist because?
Answer:
Parasitology is best suited to a person with inquisitive mind and interest in research. There are virtually unlimited research opportunities. The variety in basic and in applied research areas of parasitology exist in fields from the molecular level to the global level is unsurpassed in another field of biology.Explanation:
im from philipinnes:)
HELP
What trees produce the most oxygan
Answer: It Banyan Tree
in both lichens and mycorrhizae, what does the fungal partner provide to its photosynthetic partner?
Answer:
it provides carbon as food resource
List and describe the cell phases that go through assuming they complete mitosis
Answer:
There are four stages of mitosis: prophase, metaphase, anaphase and telophase.1) Prophase: chromatin into chromosomes, the nuclear envelope break down, chromosomes attach to spindle fibres by their centromeres 2) Metaphase: chromosomes line up along the metaphase plate (centre of the cell) 3)
Explanation:
what does a plant gain from having more than one pigment?
Answer:
Multiple pigments allow the plant to have both photosynthesis and cellular respiration to maximize the amount of energy they capture from the sun. ... Multiple pigments absorb different wavelengths of light, allowing the plant to capture the maximum amount of energy from the sun.
Explanation:
happy to help
helppppp answer the question at the bottom
Yes, you should expect differences because animals use their body temperature to keep them either cool or warm from the environments they live in. You wouldn't expect a big change from an insect like a bee because the environment Isn't that warm or cold.
can i have some help on this question as well? thank you so much
Answer:
A= amino acid
B= monosaccharide
C= steroid
D= fatty acid
E= phospholipid
Explanation:
hope that helps:)
Protein pumps are efficient because they
(Plz help)
In reference to the options listed in the image, we can say that protein pumps are efficient because they can move two types of molecules, which makes option B correct.
A protein pump is a kind of protein, often found in the cell membrane, that has the capability to pump specific substances in and out of the cell. Most of the processes that happen at the cellular level are naturally optimized for efficiency, even when the process consumes energy, as is the case with the protein pump.
The reason that the protein pump is considered efficient lies in how it uses the energy. Despite being an active process that consumes ATP to function, protein pumps are considered efficient because they can move two types of molecules at the same time, using the same molecule of ATP. This allows the cell to get more done for the same amount of energy.
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I AM GENEROUS PLZ HELP BRAINLIEST
What is the name of the process that is cell division for the cells involved in reproduction (sperm cells in male organisms and egg cells in female organisms)?
cytokinesis
replication
meiosis
mitosis
Answer:::::::::::: Meiosis………
Answer:
replication or mitosis
Here is a picture of the Amazon rain forest. Which aspect of this rain forest is
a biologist likely to study?
A. The species of plants found in the rain forest
B. The source of the river running through the rain forest
C. The pH of the river running through the rain forest
D. The rocks found throughout the rain forest
Answer:
A. The species of plants found in the rain forest
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The virus hijacks bacterial molecules and organelles to make new viruses. For example, bacterial (amino acids/lipids) and (mitochondria/ribosomes) are used to make viral proteins.
what human activities have thrown the carbon cycle off balance?
Answer:
burning fossil fuels
Explanation:
As people burns fossils fuel, the carbon cycle is obstructed and the atmospheric conditions tempered with
what part of the nucleotide forms the rungs of the ladder
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:
do plants and animals have eukaryotic or prokaryotic cells?
Answer:
eukaryotic
Explanation:
because they have nuclei
Answer:
They both have Eukaryotic cells
Explanation:
They both contain nuclei
in terms of structure, how do channel proteins differ from carrier proteins?
Answer:
Moreover, carrier proteins can carry out both active and passive transportation of solutes, whereas channel proteins bring about passive transport only. Both carrier proteins and channels proteins also differ in their chemical composition - whilst the former are glycoproteins, the latter are lipoproteins.
Explanation:
hope this helped you if it did please mark brainiest
Carrier proteins can carry out both active and passive transportation of solutes, whereas channel proteins bring about passive transport only.
What are the functions of carrier proteins?Carrier protein is a type of cell membrane protein involved in facilitated diffusion and active transport of substances out of or into the cell. Carrier proteins are responsible for the diffusion of sugars, amino acids, and nucleosides.
Moreover, carrier proteins bind specific solutes and transfer them across the lipid bilayer by undergoing conformational changes that expose the solute-binding site sequentially on one side of the membrane and then on the other.
Membrane carrier proteins are important transmembrane polypeptide molecules which facilitate the movement of charged and polar molecules and ions across the lipid bilayer structure of the cell membranes.
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Summarize information about apoptosis
Answer:
Explanation:
One purpose of apoptosis is to eliminate cells that contain potentially dangerous mutations. If a cell's apoptosis function is not working properly, the cell can grow and divide uncontrollably and ultimately create a tumor
what part of the brain is responsible for thirst and hunger
Hi there! The part of brain responsible for thirst, hunger, and sleep patterns is known as the hypothalamus.
Have a great day!
make a claim about how the metabolic rates of endotherms compare with those of ectotherms of similar mass. support ur claim with at least three pairs of data points from the graph
Endotherms have higher metabolic rates compared to ectotherms.
Endotherms include organisms that can regulate their own temperature. Some examples are:
RabbitsDogsKangaroosChimpanzeesOn the other hand, ectotherms depend on sunlight or heated surfaces to regulate their temperature. Some examples are:
PythonsCodCrocodilesLizardsIn general, endotherms have higher metabolic rates. Let's see some examples:
The Gila monster and the partridge both weigh about 800 grams but the partridge (endotherm) has a metabolic rate of 3 joules/s, while the Gile monster (ectotherm) has a metabolic rate of 0.2 joules/s.The python and the raven both weigh about 2000 grams, but the raven (endotherm) has a metabolic rate of 8 joules/s, while the python (ectotherm) has a metabolic rate of 0.2 joules/s.The rabbit and the sandbar shark both weigh about 6000 grams, but the rabbit (endotherm) has a metabolic rate of 8 joules/s, while the sandbar shark has a metabolic rate of 1.5 joulse/s.Learn more about endotherms in: https://brainly.com/question/1092272
plz help me with why
An apple, potato, and onion all taste the same if you eat them with your nose plugged
Answer:
the flavor will neutralize
Explanation:
if you're plugging your nose, it blocks most of the taste out of a food item. so while biting into an onion while plugging your nose, it will neutralize the strong flavor and make it taste more like an apple or potato since they have very similar textures. hope this helps!
Why is it important that the phospholipid has both hydrophilic and hydrophobic
regions?
Answer:
The formation of a micelle is a response to the amphipathic nature of fatty acids, meaning that they contain both hydrophilic and hydrophobic regions.
Explanation:
Biological membranes remain fluid because of the unsaturated hydrophobic tails, which prevent phospholipid molecules from packing together and forming a solid.
Name two types of cells
Answer:
Animal cells and plant cells
the eukaryotic cell organelle that most resembles a bacterial cell is the
Answer:
mitochondria
Explanation:
Both bacteria and mitochondria have their own cell
which stage of mitosis is characterized by the disintegration of mitotic spindles and the formation of two new nuclear membranes?
Answer:
telophase
Explanation:
the last stage of mitosis
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
PLEASE HELP ASAP! 50 POINTS ILL MARK BRAINLIEST. Imagine you could interview an environmentalist about the use of non renewable rescources. Think of at least 4 questions you could ask. Then imagine how they would answer your questions write out how this interview would sound.
Answer:
here are ur answer :P
Explanation:
1. How can you save non-renewable resources in today's time?
2. How non-renewable resources affect the environment?
3. What are non-renewable resources of energy?
4. What is the difference between renewable and non renewable energy?
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