Answer:
Because we cannot see some animals properly like jellyfish as their tissue is too soft, and feathers or for can often not make an imprint on fossils.
Explanation:
Answer:
Fossils: They are remains of animals or plants in the past that were somehow preserved and buried under the earth's crust.
One fossil can only give us a glimpse into the history of the time that particular animal or plant lived or breathed on the earth. For example, a fossil remains of a particular species of dinosaur would only provide information of the time when that species lived on earth and other information related to that particular time. Fossil remains of dinosaurs would not give us information on the time during the ice age or any other time in history.Explanation:
The study of various fossils can give us information about the development and evolution of living organisms over time but there are limitations to it.It may happen if we compare the fossil remains of an organism that existed billions of years ago we may find a time gap where there is no fossil evidence found so it creates a loop in information.Also, the process of fossilization is complex and long. Many species of the past became extinct without fossilization so we can never get information related to those extinct species.Thus, because of this reason we can say that fossils don't provide us with complete information about the past.For more information:
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I'm working on an assignment and they all seem true to me. Help?
Which of the following statements about plants is not true?
a. They make their food from carbon dioxide and water through photosynthesis.
b. Land plants have cell walls that help hold their stems upright.
c. They have adaptations that help prevent water loss.
d. Plants absorb food through their roots.
Answer:
A
Explanation:
because plants use atmospheric carbon dioxide and water absorbed from the earth to create organic matter in the process of photosynthesis. On that occasion, oxygen is released.
Answer:
A
Explanation:
I hope this is correct, since every other version I've seen of this question option A is water and oxygen.
what part of the kidney can be under hormonal control?
Answer:
The kidneys make two main hormones, vitamin D and erythropoietin.
give 3 exampels of where potential energy was converted to klinetic energy
Answer:
1. A rock falling off a cliff
2. Roller coaster starts plummeting from the top
3. Pendulum swings from the top to the middle, once it starts the second up swing the kinetic turns back into potential energy
Answer:
1. Pushing a large rock down a hill.
2. Kicking a stationary soccer ball.
3. Releasing a taut rubber band
I don't know how varied your class's examples of potential energy have been so far, but there are many kinds if you need more variety.
Explanation:
You can just use your imagination for these if you want to! Potential energy is the energy that an object can have, its potential to have energy (just like it says), while kinetic energy is the energy of a moving object. All you need to do is take a still object and apply force to it.
What does the type of animals and plants brought to the New World demonstrate about the needs of Pre-Columbian civilizations
Answer:
The answer would be D because Pre-Columbian civilizations didn't have any domesticated animals such as cows, chickens, and horses. This fact limited the accessibility to meat for the Pre-Columbian civilizations.Explanation:
The cells that have the general role of interacting with target cells and then inducing changes in them are ______.
The cells that have the general role of interacting with target cells and then inducing changes in them are called T-cells.
What do you mean by Target cells?Target cells may be defined as a cell that is acted on selectively by a specific agent.
T-cells involve helper T cells (TH cells) and cytotoxic T cells (TC cells) which are represented by a cluster of differentiation CD4+ and CD8+ respectively.
Therefore, the cells that have the general role of interacting with target cells and then inducing changes in them are called T-cells.
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blood flows more slowly in the capillaries than in the aorta. why?
Answer:
because it a smaller part
Explanation:
Due to the capillaries' large overall cross-sectional area, blood flow there is slow, allowing for adequate nutrition exchange.
How blood flows through blood vessels?The rate of blood flow dramatically decreases as it enters arteries, arterioles, and eventually, capillary beds, slowing to roughly 0.026 cm/sec, or 1,000 times slower than the aorta.
The capillaries, where blood flow is the slowest, provide time for the exchange of gases and nutrients. A force that opposes a fluid's flow is called resistance.
The majority of blood vessel resistance is caused by the size of the vessel. Blood flow reduces as vessel diameter shrinks due to an increase in resistance.
Therefore, the high total cross-sectional area capillaries blood flows more slowly.
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What are the longest and shorted wavelengths of sound that humans can hear.
Answer:
Extremely high-pitched sounds that are on the other edge of the range that humans can hear have smaller wavelengths around 17 mm and frequencies around 20 kHz (kilohertz, or thousands of Hertz). What are the longest wavelengths? Red has the longest wavelength and violet has the shortest wavelength.
Explanation:
when two haploid gametes unite, they create a diploid cell called a
2 haploid gametes combine to produce a diploid zygote
Make a list of 5 kinds of variation that you can see between the dogs
evaluate the statements below and determine which is the best reason that bacterial cells use operons and polycistronic rna.
Given what we know about bacterial cells and their genetic mechanisms we can confirm that they use operons and polycistronic RNA for efficiency.
Bacterial cells are vastly different from human or animal cells. Some of these differences include:
Lack of compact DNALack of organelle surrounded by plasmatic membranesThey have cell wallsMay possess flagellaand many others.
Among these differences is the way in which they encode for the proteins the bacteria will produce. Unlike human cells, bacteria use polycistronic RNA. Where a human strand of mRNA will carry the genetic message to create one protein, the polycistronic mRNA of a bacterial cell will provide the information necessary to create multiple distinct proteins.
Bacteria use this in conjunction with operons, to create very efficient protein manufacturing processes. Operons are sections of DNA in which proteins with similar functions are grouped together in order to make it easier to create the polycistronic mRNA strands.
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What is both the thickest and longest nerve in the human body?
The sciatic nerve is the largest and longest nerve in the human body, originating at the base of the spine and running along the back of each leg into the foot. At its thickest point, it is about as wide as an adult thumb.
Robert Hooke was the first person to observe cells. He observed these cells in
(a) a piece of cork.
(b) a slice of honeycomb.
(c) human blood.
(d) plaque from his own teeth.
Robert Hooke was the first person to observe cells. He observed these cells in (a) a piece of cork.
I hope this helps!
Robert Hooke was the first person to observe cells. He observed these cells in a piece of cork. Thus, option A is correct.
What is cell cycle?
Cell cycle is defined as cycle in which cell produces, grows and divides. The cell cycle has mainly three steps the first one is G1 phase in which the size of cell increases, S phase synthesis of DNA takes place and the third step is G2 phase in which cell ready to divide.
Cell is defined as the base of life as it is the structural as well as functional unit of life. Cell is made up of pre existing cells and the cell contain various cell organelles such as mitochondria, endoplasmic reticulum, ribosomes, golgi appratus, nucleus, and cytoplasm.
Basically, cell is of two type one in prokaryotic and another one is eukaryotic. The prokaryotic cell is known as pre mature cells as they do not contain cell organelles and eukaryotic cell are known as advanced and developed cells as they contain several cell organelles.
Therefore, Robert Hooke was the first person to observe cells. He observed these cells in a piece of cork. Thus, option A is correct.
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When do new species move into an area and colonize it? During ecological , new species move into an area and colonize it.
During ecological SUCCESSION, new species move into an area and colonize it. Subsequently, these species are also replaced by newer species.
Ecological succession can be defined as the process by which communities, i.e., a group of populations living in a determined area, change (evolve) over time.
This concept (ecological succession) refers to the sequential natural process of colonization of species in a particular ecosystem.
Ecological succession involves several consecutive stages:
NudationInvasionCompetence between speciesClimax stage (stabilization)Learn more in:
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Plants that we reconize today spend the majority of their life in the “blank”
A) haploid Phase
B) seed phase
C) diploid phase
D) gametophyte
Answer:
The answer is C diploid Phase
Answer:
The answer is C.
Explanation:
Plants that we reconize today spend the majority of their life in the diploid phase.
During the sporophyte phase, a diploid plant body (one with two sets of chromosomes) develops and finally generates spores via the process of meiosis. Mitotic division of these spores results in the formation of gametophytes, which are gamete-producing organisms that are haploid (have a single pair of chromosomes).
which is a type of sequence identified by gene annotation?
Answer:
DNA annotation or genome annotation is the process of identifying the locations of genes and all of the coding regions in a genome and determining what those genes do. Hope this helps!!!
Explanation:
What is the process called when cells break off of an original tumor and create new cancer sites?
OOOO
benign
malignant
metastasis
biopsy
Answer:
metastasis is your answer fits the description of host sitr to new site
When oxygen deprivation just prior to death turns off the brain's inhibitory cells, neural activity increases in the
As oxygen deprivation just prior to death turns off the brain's inhibitory cells, neural activity increases in the VISUAL CORTEX. This brian region processes visual sensory information.
The visual cortex is a cortical brain region whose function is to receive, interpret and process visual sensory information.
The visual sensory information that is processed in the visual cortex comes from the eye retina, which has specialized cells (photoreceptors) to receive visual information.
The visual cortex is found in the posterior pole of the occipital lobe, and primarily in its medial region.
It has been shown that oxygen deprivation in the cerebral cortex can lead to cortical blindness.
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A___ ______ cell has fine hairs (cilia) which are waved in a rhythm so that mucus can be moved?
Nasal Cavity alin which nerve cells has
why renin is found more in case of babies
can someone answer it
Answer:
newborn infants. Bioassayable andimmunoassayable renin activities were elevated during the first six days after delivery. At 3 to 6 weeks of age, although elevated above that in adult control subjects, renin activity was lower than in the first postnatal week. Cord blood renin values were greater than those for maternal renin during labor. Renin substrate concentration was elevated in infants less than six days of age and also in 3- to 6-week-old infants. The enhanced activity of the renin-angiotensin system may contribute to the increased renal vascular resistance and the altered renal hemodynamics that occur in the newborn infant.
Answer:
It's the same so don't complain OK it is correct so don't worry about it as much ok
what human activity contributes to air pollution brainly
Answer:
Burning fossil fuels is the most common
Answer: one edge I believe it is construction
Explanation:
the other choices are all positive and would limit air pollution not contribute to it
I need help with one paragraph.
Answer:
this is correct
Explanation:
this is correct
Bacteria such as e. coli and salmonella produce invasins that bind host cells, thus causing the cells to:
Answer:
kill cells and tissues outright
Explanation:
Sometimes bacteria multiply so rapidly they crowd out host tissues and disrupt normal function. Sometimes they kill cells and tissues outright. Sometimes they make toxins that can paralyze, destroy cells' metabolic machinery, or precipitate a massive immune reaction that is itself toxic
Acrroding to http://needtoknow.nas.edu/id/infection/how-pathogens-make-us-sick/
What's biology?
Tell types of biology?
Answer: the study of living organisms, divided into many specialized fields that cover their morphology, physiology, anatomy, behavior, origin, and distribution. Botany, conservation, ecology, evolution, genetics, marine biology, medicine, microbiology, molecular biology, physiology, and zoology are different types of biology.
Explanation:
Answer:
It's the study of the physical body of living organisms.
Explanation:
This is what I believe it to be.
What would be the safest way to reduce the impact of the the non-native red fire ant while minimizing the impact on other organisms
Answer:
The red fire ant is indigenous to South America. In recent years, this invasive species has become a pest for both humans and other ants
crop destruction
What would be the safest way to reduce the impact of the non-native red fire ant while minimizing the impact on other organisms?
A pouring gasoline on ant mounds
B
spraying broad-spectrum pesticides
с
release a species of fly that will prey on the fire ants
D
treating all species of ants with ant killer
Answer: Release a species of fly that ill prey on the fire ants
Explanation:
I assume that was the question with the answers and I had the same question thru study island so here ya go
THIS IS THE PICTURE
Answer:
looks yummy
Explanation:
What is that btw hahaha
the process of bacterial reproduction is referred to as
Answer:
binary fission
Explanation:
What is the goal of mitosis?
A major purpose of mitosis is for growth and to replace worn out cells.
Explanation:
Answer:
Well the mitosis is a process from one cell cuts into a same daughter cells. Basically cell division! During the mitosis one cell? Cuts once into a form with the same identical cells. The purpose for this mitosis is for the growth to take out the old cells and replace them with new cells.
Explanation:
Sorry if I am wrong have a bless day :D
State 2 of Newtans three laws
(PLS HELP ASAP!!)
1. Something at rest or in motion in all constants will remain that way unless acted upon by a force.
2. F=ma
Explanation:
Newton’s first law states that if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force.
Force equals mass times acceleration; it states that the time rate of change of the momentum of a body is equal in both magnitude and direction to the force imposed on it.
whats the difference between starch paste and starch milk(long ish answer pls)
Answer:
Starch Paste is basically a mixture of cellulosic materials added by wheat starch and rice. Starch Milk is just milk with starch in it.
Explanation:
Hope this helps!
Starch paste and starch milk are different in their constituents as starch paste contains a mixture of cellulose which is added to rice or wheat whereas starch milk is just raw starch with fibers in it.
What are starch paste and starch milk?Starch paste is a water-soluble adhesive which is primarily used to bond the sheets of paper. It is widely used in paper industry. It is made from the starch of the grains, potatoes, or other plants that are easily available. Before hardening of this paste, starch paste is a highly viscous, gel-like mixture with high moisture content. The starch paste based adhesives adhere well to the cellulosic materials hence used widely in industries.
The waste product formed from the mashed potatoes smuggling with water i.e., the dewatered potato pulp is known as the starch milk. Starch milk is contaminated by small fiber particles such as potato fragments and all the remaining components of potato juice. The starch milk is therefore also known as the raw starch milk.
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Michelle has been given a microscope slide that contains a eukaryotic cell and a prokaryotic cell. What should she look for to distinguish the eukaryotic cell from the prokaryotic cell?
A.
cytoplasm
B.
nucleus
C.
ribosomes
D.
cell membrane
Answer: B
Explanation: