Answer:
Early Eukaryotes were single-celled organisms that were present more than 1.6 to 2.1 billion years ago.
Explanation:
-Eukaryotes could be found in a variety of shapes and had a nucleus, a flexible membrane, and a cytoskeleton.
-Early eukaryotes used oxygen in metabolism.
Answer: Many traits found in eukaryotic cells today would have been found in early eukaryotic cells. First, early eukaryotic cells would have had membrane-bound organelles. Also, DNA probably contained introns since this is seen in many eukaryotic cells today. Chromosomes were probably linear in shape. Lastly, these cells would have had mitochondria and membrane-bound organelles. Since these are seen in all eukaryotic cells today, we can infer that they would have been around in early eukaryotes as well.
Explanation:
Just answered it on EDG
How can marine mammals survive underwater for so long?
Answer:
Special properties of an oxygen-binding protein in the muscles of marine mammals, such as seals, whales and dolphins, are the reason these animals can hold their breath underwater for long periods of time, according to a new study. ... In fact, the amount was so high in the muscle that it almost looked black in color.
Explanation:
Answer:
Special properties of an oxygen-binding protein in the muscles of marine mammals, such as seals, whales and dolphins, are the reason these animals can hold their breath underwater for long periods of time, according to a new study. ... In fact, the amount was so high in the muscle that it almost looked black in color.
Explanation:
This is the site that I got the info from, just so you know. I hope this helps!
Scientists Discover How Marine Mammals Hold Their Breath ...https://blogs.voanews.com › science-world › 2013/06/14
heres 15 points
The following diagram represents processes and products in the carbon cycle. In this diagram of the carbon cycle, Location A is the process by which carbon in the atmosphere is converted by green plants into food. © 2011 FLVS What process is occurring at Location A? Combustion Photosynthesis Respiration Weathering
Answer:
It should be B , Photosynthesis.
Explanation:
The question says something about the process by which carbon in the atmosphere is converted by green plants into food which sounds like Photosynthesis.
So sorry If it's wrong
Answer: Respiration
Explanation: took the test
If you start with 60 chromosomes and end with 30 chromosomes
A. Neither
B. Mitosis
C. Meiosis
D. Both
Answer:
If a cell has 15 pairs of chromosomes (n = 15), it has 30 chromosomes (2n = 30). At the end of mitosis, the two daughter cells will be exact ...
Explanation:
CORRECT me if I'm wrong.
#Carryonlearninh
If at start there are 60 chromosomes and ending with 30 chromosomes, then the process is meiosis. The correct option is C.
What is meiosis?Meiosis is a type of cell division that occurs in reproducing organisms and results in a reduction in the number of chromosomes in gametes (or egg and sperm).
Body (or somatic) cells in humans are diploid, with two sets of chromosomes (one from each parent).
Meiosis is a type of cell division that produces four gamete cells while reducing the number of chromosomes in the parent cell by half.
This process is necessary for the production of egg and sperm cells for reproduction.
Without meiosis, the number of chromosomes in a species does not remain constant across generations and is duplicated every time after reproduction.
Without meiosis, an organism cannot reproduce effectively through reproduction.
As, meiosis is equational division, and the chromosome number is also getting reduced to half, it can be meiosis.
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10POINTS !!!!!!
⚠️please help me ⚠️
Answer:
1. Trait
2. Gene
3. Allele
Why is tRNA called Transfer RNA?
A. Because it is responsible for transferring the protein out of the cell.
B. Because it is responsible for transferring the protein-building instructions to the ribosome.
C. Because it is responsible for transferring the right amino acid to the ribosome to create the protein.
Answer:
C
Explanation:
When a tRNA recognizes and binds to its corresponding codon in the ribosome, the tRNA transfers the appropriate amino acid to the end of the growing amino acid chain.
Answer:
C. Because it is responsible for transferring the right amino acid to the ribosome to create the protein.
Explanation:
The tRNA is known as the Transfer RNA because it is responsible for transferring the right amino acid to the ribosome to create the protein.
Do mutations always lead to evolution?
Yes, because mutations create adaptations that give a competitive advantage.
No, because most mutations lead to death of the organism.
No, because some mutations happen in the body cells, so they are not passed on.
Yes, because there would be no change in populations without mutations.
Answer:
Yes, because mutations create adaptations that give a competitive advantage.
Explanation:
Answer:
No, because some mutations happen in body cells, so they are not passed on
Your welcome
inorganic chemicals definition
Distinguish between tissue fluid and lymph
Answer:
Fluid found in the spaces around the cells. It comes from substances that leak out of blood capillaries. As new tissue fluid is made, it replaces older fluid, which drains towards lymph vessels. When it enters the lymph vessels, it is called lymph.
Explanation:
5. On the rock shoreline, how was biodiversity affected by the removal of starfish?
Answer:
When the starfish have been removed experimentally, the mussel populations have expanded rapidly and covered the rocky intertidal shores so exclusively that other species cannot establish themselves.
Explanation:
What makes an organism fit for its environment is any trait that helps it survive the longest, even if it doesn't reproduce.
Answer: A cactus has needles to prevent animals from eating the water out from it.
Explanation:
the market price of a pendrive is Rs.650. if a discount 10% is allowed, find the selling price of the pendrive
Organisms are classified as producers or consumers according to the way they *
(1) obtain energy
(2) release wastes
(3) produce offspring
(4) move from place to place
Sulfuric and nitric acids are ___ pollutants that form acid precipitation.
Answer:
ozone is bad because it can damage living tissue ... Sulfuric and nitric acids are ___ pollutants that form acid precipitation. secondary.
Someone please help me answer this. I’ll give you brainliest.
Answer:
B homeostatis
Explanation:
Answer:
B. Homeostasis
Explanation:
Homeostasis is the ability to maintain a stable internal environment. When your body overheats from exercising, you will start to sweat as a way to cool down your body temperature and return it to normal.
Carbon dioxide is carried in blood plasma.
Human blood also contains red blood cells and white blood cells.
Explain how the structure of red blood cells and white blood cells is related to their function.
(6 marks)
Answer:
Plasma is the main component of blood and consists mostly of water, with proteins, ions, nutrients, and wastes mixed in. Red blood cells are responsible for carrying oxygen and carbon dioxide. Platelets are responsible for blood clotting. White blood cells are part of the immune system and function in immune response.
Blood is important for regulation of the body’s pH, temperature, osmotic pressure, the circulation of nutrients and removal of waste, the distribution of hormones from endocrine glands, and the elimination of excess heat; it also contains components for blood clotting. Blood is made of of several components, including red blood cells, white blood cells, platelets, and the plasma, which contains coagulation factors and serum.
i really need someone to help pleasee
Answer:
B) Stars form large groupings.
Explanation:
A star clusters are large groups of stars. So option b is basically the same thing.
Hope this helps! :)
who created the naming system
Answer:
Carl Linnaeus
Explanation:
Carl Linnaeus
Explanation:Answer:
Carl Linnaeus
In truth, Linnaeus adopted their work and is responsible for the formal introduction of the naming system into the scientific world through his 1735 publication Systema Naturae which listed around 10,000 species consisting of 6,000 plants and 4,236 animals.
good luck!
Two humans mate who are heterozygous for earlobe shape where attached earlobes (A) are dominant to free earlobes (a), and earwax quality where dry earwax (e) is recessive to wet earwax (E ). What is the probability that their first child will have dry earwax and attached earlobes
Answer:
3/16
Explanation:
This question involves two different genes coding for earlobe shape and earwax quality. The alleles for attached earlobes (A) and wet earwax (E) are dominant over the alleles for free earlobes (a) and dry earwax (e).
According to this question, two humans mate who are heterozygous for both genes i.e. AaEe × AeEe. Each parent will produce the following gametes: AE, Ae, aE, ae.
Using these gametes in a punnet square (see attached image), the following proportion of offsprings will be produced:
* Attached earlobe, wet earwax (A_E_) = 9/16
* Attached earlobe, dry earwax (A_ee) = 3/16
* Free earlobe, wet earwax (aaE_) = 3/16
* Free earlobe, dry earwax (aaee) = 1/16
Hence, the probability of these parents having their first child with dry earwax (ee) and attached earlobes (A_) i.e. genotype A_ee is 3/16.
If you are observing worms, ants, and caterpillars, you are studying a biological _________________.
A. community
B. species
C. individual
D. population
E. none of the above
If you are observing worms, ants, and caterpillars, you are studying a biological species. Thus, the correct option is B.
What is Biological species?Biological species may be defined as a cluster of organisms that can reproduce with one another in nature and produce fertile offspring.
A Community may be defined as a group of individuals belonging to different species living in the same area. A Population may be defined as the number of the same species living in the same area at a particular time.
Here, worms, ants, and caterpillars are organisms of different species with different characteristics such as mode of nutrition, reproduction, and response to the environment.
The biological species are considered as an integral part or component of an ecosystem. The greater the biodiversity in an ecosystem, the greater the stability of the species within that ecosystem.
Therefore, if you are observing worms, ants, and caterpillars, you are studying a biological species. Thus, the correct option is B.
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if three or more subunits of glucose connect together they create a _________
Why is the research on plant material mentioned in the article important to Rohit Karnik’s work on membranes?
Answer: The plant tissues act as a filter to remove harmful bacteria. Rohit Karnik designs membranes used in fraction system.
Explanation: Like wood, these membranes allow water to pass through, but not bacteria. Mr. Karnak might be able to apply the research on the wood to his designs.
Answer:
The plant tissues act as a filter to remove harmful bacteria. Rohit Karnik designs membranes used in filtration systems. Like the wood, these membranes allow water to pass through, but not bacteria. Mr. Karnik might be able to apply the research on the wood to his designs.
Explanation:PLATO
A building project caused many small mammals and insects to leave an area. What effect could this have on plant reproduction in that area?
a. less pollination and less seed dispersal
b. more pollination and more seed dispersal
c. more fertilization but less seed dispersal
d. less fertilization and more seed dispersal
HOW DO THE OCEANS CURRENTS AFFECT CLIMATE
Answer:
Explanation:
Ocean currents act much like a conveyor belt, transporting warm water and precipitation from the equator toward the poles and cold water from the poles back to the tropics. Thus, ocean currents regulate global climate, helping to counteract the uneven distribution of solar radiation reaching Earth's surface.
Lifestyle choices Definition
Answer: Lifestyle choices are personal decisions to perform a behavior.
Answer:
the choices that you make that affect your lifestyle
Explanation:
The choices that affect how you live your life
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servere headache may cause please help im terribly having an headache
Answer:
oop
Explanation:
All the following actions will help prevent injury when operating equipment on a farm EXCEPT
name the main branches of biology
Answer:
Microbiology
Anatomy
Physiology
Explanation:
have a good day!
Reproductive isolation occurs when
A- some catastrophic event greatly reduces the size of the population
B- The gene pool of different populations have become very diversified
C-members of different populations can no longer meet successfully
D-small numbers of individual moves and starts in new population
Answer:
The correct answer is - C. members of different populations can no longer meet successfully.
Explanation:
Reproductive isolation is the process that occurs when two or more species or populations are not able to interbreed. The mechanisms or properties that are used to preventing individuals of separate species from mating called Reproductive isolation mechanisms.
The different barriers can cause this reproductive isolation such as different mating seasons. These barriers could be behavioral or temporal or ecological isolations.
Why is the vascular cambium important?
It absorbs oxygen.
It creates new bark.
It provides nutrients.
It allows the tree to stand erect.
Which of the following describes a way that a person's health can be affected by heredity?
A person with a family history of obesity is less likely to enroll in a weight loss plan.
A person with a family history of obesity is more likely to catch a common cold.
A person with a family history of high blood pressure is more likely to have heart disease.
A person with a family history of cancer is less likely to be screened for cancer.
Answer:
A person with a family history of high blood pressure is more likely to have heart disease.
Explanation:
The other answers aren't really hereditary. This is the only answer that is directly affected from hereditary.