The bone marrow begins producing cells in the fourth month of fetal life.
Hematopoiesis establishes in the marrow and grows there until, at term. This process starts in the late first trimester when the bones are large enough to contain marrow cavities. Hematopoiesis can move outside of the bone marrow to various organs under conditions of prenatal and neonatal stress.
Between the bone spicules are the hematopoietic components. Both sinusoids and a robust circulatory network are present in the marrow. Pluripotent stem cells are the progenitor cells that give rise to all hematopoietic components and lymphoid cells.
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Help now please fast!!!
Answer:
29.0576 meters per second
Answer:
Explanation:
29 m/sec
Why do modern scientists use repeated
experiments to develop and test hypotheses?
Repeated experiments that show the same
results prove that scientific information will
never change
Repeated experiments that show the same
results are less likely to contain experimental
errors.
Repeated experiments that show the same
results guarantee that all scientists will agree
with the experimenter's explanations
Answer:
Alin dito ang madalas mong ginagamit sa social media
Answer:
Repeated experiments that show the same results are less likely to contain experimental errors.
Explanation:
What is the glucose molecules created from during photosynthesis
Answer:
During the process of photosynthesis, cells use carbon dioxide and energy from the Sun to make sugar molecules and oxygen. These sugar molecules are the basis for more complex molecules made by the photosynthetic cell, such as glucose.
Explanation:
can i have brainliest plz
Which statement below best explain the difference between microevolution and macroevolution
A. Biodiversity (macroevolution) is a result of natural selection whereas microevolution studies changes due to extinction
B. Natural selection (microevolution) focuses on a adaptation change within a species whereas macroeveolution studies similar features among species
C. Evolution (both micro & macro) takes thousands or millions of years; however, due to the complexity of DNA- microevolution usually takes longer.
D. Microevolution explains how new & different species evolve from natural selection and Macroevolution studies the different anatomical features from the DNA mutations.
Answer:
C
Explanation:
4. Which statement is an example of how
environmental factors affect gene expression?
A. Your finger becomes callus from writing with a
pencil
B. The amounts of sun, water, and nutrients affect the
growth of a plant
C. Parents with red hair have a child with red hair
D. A red snapdragon flower is crossed with a white
snapdragon flower to produce a pink snapdragon flower.
Answer:
B. The amounts of sun, water, and
nutrients affect the growth of a plant
Explanation:
Gene expression is the way by which the genes of an organism instructs the production of proteins, which are responsible for the organism's phenotype. However, the trait or characteristics possessed by organisms are not strictly or 100% dependent on the genotypic factors but also on the environmental factors.
Environmental factors are the biotic (living) and abiotic (non-living) factors that affect organisms development and growth. An example is how the amount of sun, water, and nutrients, which are all environmental factors, affect the growth of a plant. Growth in plant, therefore, affects gene expression.
Mitosis makes up ALL of the cell cycle?
hey guys im not begging for help here but ive been stuck for 10 minutes and my time is running out!
Answer is B. You can tell that from the table.
Gregor Mendel, a 19th century monk, used pea plants to arrive at several conclusions
about how traits are passed on to offspring. One conclusion became known as the Law of
Segregation. The illustration below shows how this law operates.
Parent 1
Parent 2
Offspring 1 Offspring 2 Offspring 3 Offspring 4
Which conclusion can you make based on Mendel's work as shown in the diagram?
Parent 1 has the dominant trait
Parent 2 has the dominant trait.
The offspring inherit traits only from Parent 1.
The offspring will not pass on the trait, inherited from Parent 2, to their offspring.
Answer:
I think the answer is parent one has to dominant off string since it looks more like them since they might they might have better geans
Answer:
Parent 1 has the dominant trait
put "Environmental Pressure" in a sentence
Answer:
Organisms are subject to environmental pressures, but they also modify their habitats
HELP ME PLEASE ILL GIVE BRAINLY IF U GET IT RIGHT PLEASE!!!!
Answer:
the right answer is option B2. Create a poster on how one should be careful around animals and avoid animal attack.
Remember, a poster must have
a slogan
b. a picture
a few words
Hello My name Is Chloe, Do you think you can help me with My Question
I need Facts on sharks.
I'm doing a report for school.
Thanks:)
Answers:
Here are some fact about sharks that i found cool
#1
Possibly one of the most evolved sharks today are hammerhead sharks. They have an advanced sensory system and a body shape that has adapted to hunt specific prey
#2
Sharks may be one of the most important species on Earth. They have been maintaining our oceans for over 400 millions years.
#3
Sharks have evolved and changed much over millions of years. However many sharks today still share some of the features as sharks from millions of years ago.
#4
Sharks have been in our oceans for over 400 million years. Some of the earliest sharks were discovered dating back to the Devonian age.
#5
Sharks have survived five massive planet extinction events. These extinction events killed most life on earth and the last one around 65 million yeas ago killed the dinosaurs.
#6
There are over 500 species of shark.
#7
It is believed that each whale shark's pattern is unique, like a human's fingerprint.
#8
Sharks do not have bones. Instead, they have cartilage, that's what makes up human noses and ears
#9
According to the Smit.hsonian, there are over 500 known shark species, though many are endangered or declining due to various factors like overfishing.
#10
Your odds of getting attacked and killed by a shark are 1 in 3,748,067. In a lifetime, you are more likely to die from fireworks or lightning. Whereas over 100 million sharks are killed every year by humans.
#11
Whale sharks are the world’s biggest fish.
#12
Sharks mature slowly and reach reproductive age anywhere from 12 to 15 years.
#13
Hammerhead sharks' eyes are on the sides of their heads, so they have nearly a 360-degree sight line. Their panoramic view of the undersea world is inhibited by two blind spots, one in front of the snout and the other directly behind the head.
#14
Sharks predate the dinosaurs by 200 million years.
#15
Great whites can detect one drop of blood in 25 gal (100 L) of water and can sense even tiny amounts of blood in the water up to 3 mi (5 km) away.
(sorry if this took a lot of time but i had search somethings)
Have a nice day!
Answer:
Sharks do not have bones. ... Most sharks have good eyesight. ... Sharks have special electroreceptor organs. ... Shark skin feels similar to sandpaper. ... Sharks can go into a trance. ... Sharks have been around a very long time. ... Scientists age sharks by counting the rings on their vertebrae. ... Blue sharks are really blue.Sharks, in some form or another, have been around for 450 million years. ... There are over 500 species of shark. ... Sharks do not have bones. ... The whale shark is the largest fish in the ocean. ... Another shark species is the hammerhead shark, known for its distinct appearance.Explanation:
what important fibers are produced by the above structures during mitosis
Answer:
Spindle Fibers
Explanation:
Spindle fibers form a protein structure that divides the genetic material in a cell.
(iii) Parts of _________ help us to maintain body balance
a) Outer ear
c) Middle ear
help us to maintain body balance.
b) inner ear
d) ear pinna
Answer:
b. inner ear
Explanation:
vestibular system which is found in the inner ear is essential in our sense of balance.
Which food chain represent one way that energy my flow through this ecosystem?
Answer:
its a metal chain not a food chain, (steel to be more specific)
Explanation:
Answer:
A
Explanation:
1. name the mutation
original strand of dna:AATCGTC
mutated strand of dna:TAATCGTC
Answer:
Insertion
Explanation:
An insertion is the addition of one or more nucleotide base pairs into a DNA sequence.
In this case, T was added to the strand
What did you learn today? On lined paper, write 1-2 well-written paragraphs to reflect on both the scientific content
and ideas you heard about as well as the claim-evidence-reasoning processes you used.
Article: How nasa found the ideal hole to land in
ion know
Explanation:
which best represents a heterogeneous mixture
Answer:
cement and water represent the best heterogenous mixture
Help plzzzzzzzzz
During G2 phase:
A.) The DNA has already replicated and the cell continues to grow
B.) The cell will grow. The cell will get larger.
C.) The nucleus divides.
D.) DNA replicates (copies)
Answer:
A
Explanation:
This is the answer, hope it helps.
7. To what Super group does the ameba belong? ? mark as brainliest first to be correct
Answer:
I-Hispanic okanye i-latino kunye ne-Hispanic okanye i-latino kunye ne-Hispanic okanye i-latino kunye ne-Hispanic okanye i-latino yendalo kwaye ayikho iplastiki endiyidlalayo ndiyenza bombastic
Neurons that respond to specific types of lines are examples of:
A. figure detectors.
B. top-down processors.
C. feature detectors.
D. figure processors.
Answer:
C
Explanation:
Neurons that respond to certain types of lines are examples of feature detectors found in Option C. Neurons are the monomeric units of the nervous system that play an important role in transmission.
What is the importance of the neuron?
The neuron is a unit in which the message is transmitted from the neuron to another neuron, and this can be done by either chemical signaling or by electric signaling. The neuron receives sensory stimuli from the sensory organ and transmits them to the spinal cord.
Later, the message from the spinal cord is sent to the motor organs, and the whole pathway of the neuron signaling from the sensory to the motor organ is called the reflex arc. The neuron takes part in the signaling process so that the muscle can function, regulate the contraction relaxation, and perform many other functions.
Hence, neurons that respond to certain types of lines are examples of feature detectors found in Option C.
Learn more about the neuron here.
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Name one adaptation that allows desert plants to survive with little water?
Answer:
stomata
Explanation:
This adaptation helps cacti reduce water loss by keeping the hot, dry wind from blowing directly across the stomata. The leaves and stems of many desert plants have a thick, waxy covering.
What steps are usually included in the scientific method
Answer:
1. make an observation 2. ask a question based on your observation. 3. form a hypothesis/ make a prediction 4. do a test or experimentation 5. analyze data 6. form a conclusion
Explanation:
I need help with this question
Answer:
B
Explanation:
A family business had bred dogs for over 250 years. During this time, 125 generations of dogs were bred for a single trait: protective instincts. Immediately after
birth, the puppies are sorted based on whether or not they have a white patch of fur on their chests. Those without this trait, are no longer bred for their
business and instead are adopted to pet stores and not private sales for people requesting the desired trait of protective instincts.
How could the breeders know these other dogs will not have the traits they are looking for when they are just new-born puppies?
Answer:
They can know if the trait has been carried on by looking at the bred dogs that have the trait and determining if the trait has been passed down by similar characteristics between the parent with the trait and the puppy that could have the trait.
Explanation:
Deco cubes with 3 types of solutions science
Answer:
Below
Explanation:
Deco cubes with 3 types of solutions sciences
Answer:
owwwwweeeaaaa my god!
Explanation:
How are viruses, bacteria, and parasites alike?
A. They are non-living and can cause disease.
O
B. They are multi-cellular and can cause disease.
O C. They can infect a host and cause disease.
O
D. They are unicellular and can cause disease.
Which worm shown is most likely a segmented worm?
Answer:
phylum Annelida and and leeches
Explanation:
Answer:
B
Explanation:
A friend says that all bacteria are harmful to people list three reasons this statement is incorrect.
What do we call an organism that is not native to an environment, but is able to thrive anyway?
Answer:
An invasive species
Explanation:
Invasive species come from other environments, many times on accident, but usually thrive so much that they end up taking over and starving other native creatures by taking the resources. Hope this helps! (Brainliest appreciated :))