Answers
Answer:
Cell wall: plant cells have a cellulosic cell wall, which is absent in the case of animal cells. The plasma membrane serves as the outermost boundary for an animal cell
Explanation:
Related Questions
Im currently taking my finals and I really need urgent help
Answers
Hope this helps
Please give me Branliest
I need this now pleaseee
In your on word write a sentence describing a situation between 2 people and then rephrase to show empathy
Answers
RNA polymerase binds to a specific DNA nucleotide sequence during transcription.
What is the DNA sequence called where RNA polymerase binds, and initiates transcription?
Answers
The specific DNA sequence where RNA polymerase binds and initiates transcription is called the promoter region.
Which body fluid compartment(s) contain(s) higher concentrations of Na+, Cl-, and Ca2+?
both plasma and intracellular fluid
both plasma and interstitial fluid
plasma
intracellular fluid
interstitial fluid
Answers
both plasma and interstitial fluid
Where are the A, B and RH antigens located
Answers
Answer: The A, B, and Rh antigens are located on the surface of red blood cells.
Explanation:
Over a long period, how might living things adapt to increased carbon dioxide levels and global warming?
Answers
If climate change is due to weather engineering by chem trailing in conjunction with ionospheric heating, then it could cause serious illness to our species.
The use of the electro-magnetic spectum and radio waves by ionospheric heaters, could cause genetic damage as well as infertility. Whether other sources of RF/EMF also play into weather manipulation and control is unclear. Whether the use of ionospheric heaters contributes to climate change is unclear, but it intuitively seems likely. Creating a sustaining a plasma in the ionosphere may heat up more than the ionosphere and it may have an impact on the weather.
We do not know what chemicals are being used to obscure the sun, create clouds, perhaps create rain and wind, (nor why) and therefore we do not know if those could also contribute to infertility or genetic damage when they finally wash out of the sky. We do not know if the chemicals can be absorbed through the skin, or what happens to us when we breathe them, or consume them in our drinking water or in the food we eat. Higher levels of certain metals have been measured in the soil after chem trails. It is difficult to know which tests to use to test for all the chemicals which can be used.
An amino acid's unique characteristics is defined by the ________.
Answers
An organism has 18 chromosomes in its body cells. Its sex cells have 9 chromosomes.
Which statement correctly explains this?
Answers
For an organism that has 18 chromosomes in its body cells and its sex cells have 9 chromosomes, the correct statement is C, Its sex cells are haploid and a result of meiosis.
What are haploids?Haploid cells have half the number of chromosomes as diploid cells. Mitosis is a type of cell division that produces two identical daughter cells. Meiosis is a type of cell division that produces four daughter cells, each with half the number of chromosomes as the parent cell.
In the organism described, the body cells are diploid (18 chromosomes) and the sex cells are haploid (9 chromosomes). This is because the sex cells are produced by meiosis, which is a type of cell division that reduces the number of chromosomes by half. This allows the sex cells to combine with each other to form a new diploid cell, which is the beginning of a new organism.
Find out more on chromosomes here: https://brainly.com/question/11912112
#SPJ1
Complete question:
An organism has 18 chromosomes in its body cells. Its sex cells have 9 chromosomes.
Which statement correctly explains this?
Its body cells are haploid and a result of mitosis.
Its sex cells are diploid and a result of mitosis.
Its sex cells are haploid and a result of meiosis.
Its body cells are diploid and a result of meiosis.
(Biology)(100 Points) How are models used?
Why do scientists and engineers use models?
What is the difference between an open and closed system?
What are some types of models?
Why might a model change over time?
(please explanation if possible)
Answers
Answer:
Models are used to represent aspects of the natural world that are too small, large, complex, or difficult to observe or explain directly.
Scientists use models in order to assist in the visualization of current knowledge of a system in the state that it is in at the present time.
Visual models, mathematical models, and computer models.
Models change over time as technology and equipment improve and ideas become modified.
Remember to revise these in your own words.
Answer
Explanation:
Scientists and engineers use models to test theories and/or use as examples
I don't know the second one
A model might change due to new information
Also yea college language am I not allowed to joke on an answer?!?
Yeast cells, plant cells, and mammal cells all share many similarities in cell signaling. This provides evidence that:________
a. cell-signaling mechanisms are only found in organisms that use methods of sexual reproduction
b. intercellular communication evolved as a way for multicellular organisms to coordinate cell functions
c. eukaryotic cells use signal transduction pathways while prokaryotic cells use a more primitive form of signaling
d. signal transduction pathways appeared in cells before the evolution of multicellular organisms
Answers
Answer:
D
Explanation:
Yeast cells, plant cells, and mammal cells all share many similarities in cell signaling. This provides evidence that signal transduction pathways appeared in cells before the evolution of multicellular organisms. Thus, the correct option for this question is D.
What is cell signaling?Cell signaling may be defined as a process through which a cell of an organism may respond to substances outside the cell through signaling molecules found on the surface of and inside the cell.
This biological process of cell signaling is ultimately required in order to accomplish all sorts of metabolic activities that are essential for the survival of living organisms, no matter whether they are prokaryotic or eukaryotic, unicellular or multicellular.
Therefore, the correct option for this question is D.
To learn more about Cell signaling, refer to the link:
https://brainly.com/question/14470454
#SPJ5
how many moles of C atoms do you have if you have 1.23 x 10^24 atoms ?
Answers
Answer:
2.04 moles of C atoms
Explanation:
The number of moles of C atoms can be calculated using Avogadro's number, which is approximately 6.02 x 10^23 atoms per mole.
To find the number of moles of C atoms in 1.23 x 10^24 atoms, we need to divide the number of atoms by Avogadro's number:1.23 x 10^24 atoms / 6.02 x 10^23 atoms/mole = 2.04 moles
Therefore, if you have 1.23 x 10^24 atoms of C, you would have 2.04 moles of C atoms.
What are the living and non-living parts of blood called?
Answers
Answer:
The non-living component of our blood is known as the extracellular matrix, called plasma,and it makes up 55% of our blood composition and makes blood unique among connective tissues because it is fluid.
Explanation:
Living blood cells)—include red blood cells (RBCs), white blood cells (WBCs), and cell fragments called platelets, and this makes up 45% of our blood composition.
Results: Only nonencapsulated bacteria grow. A reasonable conclusion to draw from the results of the experiment is that
A. DNA is a double helix
B. DNA is translated into protein.
C. DNA replication is semiconservative.
D. The mutation changes the genetic material,
E. DNA is the genetic material.
Answers
The reasonable conclusion to draw from the results of the experiment is that DNA is the genetic material. Option E is correct.
The experiment showed that only nonencapsulated bacteria grew, which suggests that the genetic material responsible for growth is present in the nonencapsulated bacteria. Since DNA is known to be the genetic material that carries the instructions for growth and development in living organisms, it is reasonable to conclude that DNA is the genetic material.
This conclusion is supported by the fact that DNA is a double helix (option A), but the experiment did not provide direct evidence for this characteristic of DNA. The experiment also did not directly demonstrate that DNA is translated into protein (option B) or that DNA replication is semiconservative (option C). While mutations can change the genetic material (option D), the experiment did not specifically involve mutations, so this conclusion is not supported by the results.
Therefore, the most accurate and reasonable conclusion based on the experiment is that DNA is the genetic material (option E).
To know more about DNA:
https://brainly.com/question/30006059
#SPJ12
ASAPPP! Someone pls help me putting pictures in order for each row! Hint: Producers come first.
Answers
Answer:
Explanation:
first line is good
second line: tree, caterpillar, bird, snake
third line: The plant, the bug, frog, heron
The diagram below represents some stages in the life cycle of humans. The numbers in the diagram represent various processes in the cycle.
Identify the process(es) represented by 1 and 2. State how these processes (1 and 2) affect the amount of genetic information provided by a parent to its offspring.
Answers
The process represented by 1 and 2 could be meiosis which is a type of cell division. The process represented by 3 could be fertilization which is the fusion of gametes to form a zygote.
The process of cell division called meiosis, that produces gametes with half the number of chromosomes as the parent cell is responsible for producing gametes. The genetic information provided by a parent to its offspring is determined by heredity and varies from one individual to another as do other genetically determined traits.
The life cycle of humans is divided into different stages. The sperm from the adult male human and the egg from the adult female human form a zygote inside the uterus. This zygote then undergoes mitosis to form an embryo. The embryo then develops into a fetus which is born after around nine months.
To know more about fertilization, refer:
https://brainly.com/question/14886372
#SPJ1
this organelle is particularly important during cell division. it directs the formation of the mitotic spindle. this organelle is particularly important during cell division. it directs the formation of the mitotic spindle. microtubule centriole mitochondrion endoplasmic reticulum
Answers
It directs the formation of the mitotic spindle. microtubule centriole mitochondrion endoplasmic reticulum Centriole. option (2)
A centriole is a cylindrical organelle that is mostly made of the protein tubulin in cell biology. Centrioles are present in the majority of eukaryotic cells, but they are absent from conifers (Pinophyta), flowering plants (angiosperms), and the majority of fungi. They are only found in the male gametes of charophytes, bryophytes, seedless vascular plants, cycads, and ginkgo trees.
A structure known as a centrosome is composed of a bound pair of centrioles and is encircled by a highly organized mass of dense material called the pericentriolar material (PCM).
Learn more about Centriole.
https://brainly.com/question/909799
#SPJ4
Full Question: this organelle is particularly important during cell division. it directs the formation of the mitotic spindle. this organelle is particularly important during cell division. it directs the formation of the mitotic spindle.
microtubule centriole mitochondrion endoplasmic reticulumWhich is the first step in building a solar system from a solar nebula?
O A. An explosion disturbs the gas and dust in the nebula.
B. The nebula collapses.
C. Matter accumulates.
O D. Spinning matter increases in temperature.
Answers
Answer:
A) An explosion disturbs the gas and dust in the nebula.
Explanation:
You are welcome <3
What enzyme unwinds or unzips the
parent strand in DNA?
Answers
Answer:
Helicase
Explanation:
To begin DNA replication, unwinding enzymes called DNA helicases cause the two parent DNA strands to unwind and separate from one another.
Stem cells allow organisms like hydra, planaria, and salamanders to regenerate body parts. But, not all stem cells are totipotent, that is , able to differentiate into every type of cell in the body. Pluripotent stem cells can form most, but not all cell types, while multipotent stem cells can form a limited set of cell types .
3. The marrow inside the bones of a rabbit's leg contains stem cells However, rabbits cannot regenerate an entire leg if gets severed. Why type of stem cells do you think are in a rabbit's bone marrow?
Answers
Answer:
Explanation:
Shan
Answer:
Multipotent
Explanation:
I just did it right now.
How does genetic variation within a species increase the chance of survival in a species in a changing environment? explain and provide an example
Answers
Some butterflies change into different colours depending on the environment.
A tree camouflaged butterfly would not survive in a grass camouflaged butter. The reason they survive is because of genetic variation.
Question 12. Which of the following is not a likely result of global warming?
A. rising sea level
B. increased agricultural productivity worldwide
C. worsening health effects
D. increased storm frequency and intensity
Answers
Explanation:
C. worsening health effect............
The not-likely result of global warming from the options listed below is ( B ) Increased agricultural productivity worldwide
The term Global warming is used to describe the stepwise increase in the temperature of the earth atmospheres which is caused by the presence of green house gases such as ; CFC's in the atmosphere. Global warming is a major threat to the overall well being of the earth and should be checked.
The consequences of global warming includes :
rising sea level worsening health effects and increased storm frequency and intensityGlobal warming affects the level of agricultural productivity negatively
Hence the increased agricultural productivity worldwide contained in the options is not as a result of global warming .
learn more about global warming : https://brainly.com/question/3223175
(a) Apart from drinking, name two other ways in which Sam can gain water.
Answers
Answer:
Yes two ways given below
Explanation:
1. through intravenous system (IV) Sam can gain water by glucose bottle...
2.sam eat watermelon because it is rich with calcium and lot of water.
how do molecules move through the ecosystem?
Answers
Answer:
Explanation:
Molecules are changed from organism to organism through the process of digestion to biosynthesis.
in physiological Genotype and phenotype disorder male and female in reproductive system
Answers
Both males and females can experience reproductive system disorders. These disorders can be caused by genetic factors, hormonal imbalances, structural issues, infections, or other medical conditions. In males, these disorders may include erectile dysfunction, infertility, testicular disorders, prostate problems, and hormonal imbalances. In females, they may include menstrual disorders, polycystic ovary syndrome, endometriosis, uterine fibroids, ovarian cysts, infertility, and hormonal imbalances. Treatment options vary depending on the specific disorder and may involve medication, hormonal therapy, surgery, or assisted reproductive technologies.
Para que sirve el estomago?
Answers
Answer:
Órgano que forma parte del aparato digestivo. El estómago ayuda a digerir los alimentos al mezclarlos con jugos digestivos convirtiéndolos en líquido diluido.
why RNA chain is always transcribed on 3' to 5' template strand ?
Answers
Explanation:
RNA growth is always in the 5′ → 3′ direction: in other words, nucleotides are always added at a 3′ growing tip, . Because of the ANTIPARALLEL nature of the nucleotide pairing, the fact that RNA is synthesized 5′ → 3′ means that the template strand must be oriented 3′ → 5′.
hope it helps you mark me brain list
Professor Henry is preparing a traditional Thanksgiving meal and decides to make some turkey soup. He uses part of the leftover turkey and adds carrots, celery, and onions. He cools the soup in the refrigerator overnight, and the next morning he notices an undissolved layer a fat floating at the top of the soup. This top layer of fat is
a)hydrophilic substance b) monosaccharide c)polysaccharide d)hydrophobic substance e) disaccharide
Answers
Answer:
D) Hydrophobic Substance
Explanation: The answer is Hydrophobic Substance because any organic substance such as fat or oil are hydrophobic because they for the most part contain hydrocarbs, which form non-polar bonds.
peristalsis is regulated in part by the intrinsic stretch reflexes. it is also thought to be stimulated by the hormone.. a. Gastrin b. Secretin
c. Cholecystokinin
d. Glucagon
Answers
The inherent stretch reflexes play a function in controlling peristalsis. Cholecystokinin is another hormone that is thought to stimulate it.
What is the function of cholecystokinin?In the small intestine, a hormone known as cholecystokinin is produced. It plays an important role in the digestive process. When fats and proteins enter your small intestine, cholecystokinin forces your pancreas and gallbladder to constrict.
What effect does cholecystokinin have?Following a meal, CCK works in a highly coordinated manner to: (1) control the flow of nutrients through the digestive tract; (2) constrict the gallbladder and increase pancreatic exocrine exudation to aid in digestion; (3) potentiate amino alkaline insulin secretion and postpone gastric emptying to aid in...
To know more about cholecystokinin visit:
https://brainly.com/question/15451892
#SPJ4
15 Which of the following describes an internal structure that allows organisms to adapt to their
environment? (7.12A)
A Squid use their tentacles for grasping and feeding.
B Owls have large, forward-facing eyes to help them see far distances.
C Birds have hollow bones so they can fly long distances without being weighed down.
D The poison dart frog is brightly colored as a waring to other animals that it is deadly.
Answers
Answer:c
Explanation:
Match the hormone with the appropriate effect or description.
a. Secreted when blood calcium levels are too high
b. Inhibits osteoclast activity Calcitonin
c. Causes RANKL to be produced
d. Secreted by the parathyroid glands
e. Stimulates an increase in the number of osteoclasts
f. Secreted when blood calcium levels are too low
g. Secreted by the thyroid gland
1. Calcitonin
2. PTH
Answers
Answer:
a. Calcitonin
b. Calcitonin
c. PTH
d. PTH
e. PTH
f. PTH
g. Calcitonin
Explanation:
Calcitonin is a short peptidic hormone secreted by the parafollicular cells of the thyroid gland. Conversely to the parathyroid hormone (PTH), calcitonin reduces the calcium level in the blood. If the calcium concentration in blood decreases, the concentration of calcitonin secreted decreases too. On the other hand, the PTH peptide hormone is an important hormone secreted by the parathyroid glands that affect bones and tissues. PTH stimulates the proliferation and activity of the osteoclast (specialized cells that play a crucial role in bone resorption) in order to increase calcium levels in the blood. PTH stimulates the expression of the receptor activator of nuclear factor-kappa-Β ligand (RANKL) protein, thereby activating osteoclast differentiation and inhibiting osteoclast apoptosis.