Answer:
The other two, the generative nuclei, can be thought of as non motile sperm cells. After reaching an ovule and breaking out of the pollen tube tip, one generative nucleus unites with the egg cell to form a diploid zygote.
Explanation:
This means that;
The fertilized egg with two complete sets of chromosomes, one from each parent. The zygote undergoes a limited number of divisions and gives rise to an embryo.
Which of the following statements BEST describe viruses? Pick ONE.
: They have cytoplasm
: They have organelles
: They cannot live on their own
Answer:
They can not live on their own
Explanation:
The main difference between cells and viruses is that viruses need another cell to infect so that they can reproduce. Cells on the other hand can reproduce on their own.
The statements best describe viruses are they cannot live on their own. Therefore, option C is correct.
What is virus ?A virus is an infectious submicroscopic creature that only reproduces inside live cells. All living things, including plants, animals, and microbes like bacteria and archaea, are susceptible to virus infection.
Viruses are utilized as carriers or vectors to deliver the necessary components for treating a disease to different target cells. They have received substantial research in the treatment of malignancies, inherited illnesses, and genetic engineering.
Viruses are composed of bundles of DNA or RNA that are encased in a protein capsule called a capsid. By some metrics the most prevalent life form on Earth1, viruses are thought to be 10 times more prevalent than bacteria.
Thus, option C is correct.
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Plz I need help I will give you 50 points
Answer:
what is the name of this website or the book
please tell me
Answer:
ok so lets elimnate we already have tips on how to save thanks to our teacher/classmates and even if we didnt we can look them up and there baiscly all the same thing so A is out. answer B is pretty good so we will wait to the end C is common sense i dont tink it would that because the teacher is giving us 2 months and u pay rent every 1 month so thats out so that leaves u with B and D. i personally i think its D but usally rent stays the same for each month unless the person who owns building charges u more which they tell you about
Explanation:
Which of the following accurately describes how environmental pollution can cause a
non-transmissible disease?
People who are exposed to photochemical smog in "gray-air cities" are at risk of developing
pneumonia.
People who are exposed to increased levels of tropospheric ozone are at risk of developing
skin cancer.
People who eat animals in which toxins have bioaccumulated are at risk of contracting
malaria.
People who are exposed to asbestos particles are at risk of developing respiratory
infections.
Answer:
B
People who are exposed to increased levels of tropospheric ozone are at risk of developing skin cancer.
Explanation:
What is the most likely reason for the difference in the results? A. New Zealand farmers have access to larger areas of pastureland. B. New Zealand farmers feed their cattle more expensive grain. C. Milk in California is more concentrated than milk in New Zealand D. Cows in New Zealand are more efficient at producing milk.
Answer:
A
Explanation:
The other answers are weird.
True or false
Prokaryotic cells can’t replicate DNA, because they do NOT possess nuclei.
Answer:
False
Explanation:
Prokaryotes do have their genomic DNA concentrated and localized to a small area within the cell (nucleoid region). So it's not entirely accurate to say that prokaryotes don't have a nucleus.
Answer:
true
Explanation:
prokaryotics are cells without nucleus
. ___________________ is the process of plants releasing oxygen into the environment?
Answer:
photosynthesis
Explanation:
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Produces and secretes bile. Alternates contraction and relaxation of smooth muscles along the length of the GI tract. Largest salivary gland anterior to each ear. Another term for chewing. Covers dentin and glues the teeth to the periodontal ligament. Secrete hydrochloric acid in the stomach. Vessels absorbing and transporting fatty acids and monoglycerides. Pancreatic juice enters this region of the small intestine. Has both endocrine and exocrine functions. Finger-like extensions in the epithelial cell membrane.
Answer:
The correct answer would be -
1. liver 2. peristasis 3. parotid 4. mastication 5. cemuntum 6. parietal cell 7. Lacteal 8. duodenum 9. Pancreas 10. microvilli
Explanation:
The liver is the gland or the organ that is responsible for the production of bile and secreted into the duodenum during digestion.
Peristalsis is the movement that helps in forwarding propulsion of food/bolus
The parotid is a gland that produces and secrets saliva for moistening the food and digesting carbohydrates.
Mastication is a process that helps in crushing and breaking the food into smaller pieces.
Cementum is a substance that covers the root of the teeth and glues the teeth to the periodontal ligament.
Parietal cells secrete hydrochloric acid to remove the pathogens and activating pepsinogen.
Lacteal vessels absorb fatty acids and transport them
Duodenum is the region where pancreatic juice and bile is secreted.
The pancreas is an organ and gland that acts as exocrine and endocrine gland
Microvilli are the projection look like fingers in the epithelial cell membrane.
1 point
1. Carla is bringing her 2 year old brother to Montgomery Days. Tired of
listening to him talk, Carla buys him a big wad of cotton candy. An hour
later she notices her brother has a ton of energy! Cotton Candy must be
high in what type of macromolecule and why? *
Carbohydrates; provide short term energy
Macromolecules; provides all the structures with nutrients
Proteins; provides short term energy
Lipids; provides long term energy to keep the kid wound up for hours
Answer:
Lipids; provides long term energy to keep the kid wound up for hours
Explanation:
When you give a child sugar they will have energy for a while
Lipids are present in the cotton candy which makes it high for hours. option D is correct.
What are lipids?A lipid is any of various organic compounds that are insoluble in water. They include fats, waxes, oils, hormones, and certain components of membranes and function as energy-storage molecules and chemical messengers.
Lipids provide long-term energy to keep the kid wound up for hours. Some of their main functions include energy storage, hormones, and cell membranes.
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Name 3 stages of cell division, and give a brief description of what happens in each stage? please help I really need some help with this much appreciated
Answer:
Prophase
- Mitosis begins with prophase, during which chromosomes recruit condensin and begin to undergo a condensation process
Metaphase
- Next, chromosomes assume their most compacted state during metaphase, when the centromeres of all the cell's chromosomes line up at the equator of the spindle
Anaphase
- The progression of cells from metaphase into anaphase is marked by the abrupt separation of sister chromatids. Two separate classes of movements occur during anaphase. During the first part of anaphase, the kinetochore microtubules shorten, and the chromosomes move toward the spindle poles. During the second part of anaphase, the spindle poles separate as the non-kinetochore microtubules move past each other
Answer:
the 3 stages are: Interphase, Mitosis, Cytokinesis
Explanation:
Interphase is the phase of the cell cycle in which a typical cell spends most of its life. Interphase is the 'daily living' or metabolic phase of the cell, in which the cell obtains nutrients and metabolizes them, grows, replicates its DNA in preparation for mitosis, and conducts other "normal" cell functions.
Mitosis: a type of cell division that results in two daughter cells each having the same number and kind of chromosomes as the parent nucleus, typical of ordinary tissue growth.
Cytokinesis: The cytoplasmic division of a cell at the end of mitosis or meiosis, bringing about the separation into two daughter cells.
How does the extinction of species affect humans?
A. Extinction generates new sources of medicine.
B. Extinction upsets the natural cycling of nutrients,
C. Extinction helps keep air and water clean.
D. Extinction makes the environment more pleasant.
Answer:
B. Extinction upsets the natural cycling of nutrients
The extinction of species affect humans as extinction upsets the natural cycling of nutrients. Therefore, option (B) is correct.
What do you mean by extinction of species?Extinction is the end of a sort of life form or of a gathering of sorts, normally an animal categories. The snapshot of annihilation is for the most part viewed as the passing of the last person of the species, albeit the ability to raise and recuperate.
As species go terminated, they are removed from the established pecking order. The animals that ate the species that has gone extinct must find new food or die. Other animal or plant populations could suffer as a result.
Habitat loss and degradation (primarily deforestation), overexploitation (hunting and overfishing), invasive species, climate change, and nitrogen pollution are the main modern causes of extinction.
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You leave a cracker in your mouth for 7 minutes without chewing. Hormones signal amylase to be released in your mouth and the cracker begins to dissolve. Which to systems ane being used in this scenario?
A.Endocrine & Immune
B.Digestive and Skeletal
C.Endocrine & Digestive
D.Digestive and Excretory
Organisms are classified into Kingdoms based upon basic characteristics. An organism has a nucleus in its cell, is multicellular, and produces its own food for energy through the process of photosynthesis.
Answer:
kingdom plantae because of process of photosynthesis
When a normal cell undergoes mitosis it produces two, identical cells that are clones of the “mother” cell. How is that different from what sex cells do when they undergo meiosis?
Answer:
when a sex cell undergoes meiosis, it producs two haploid cells each having half the chromosome number of the "mother" cell
The diagram below shows the first four steps of meiosis.what's is happening in step labeled c?
Photosynthesis occurs in cells with?
Answer:
with the help of chlorophyll.
Explanation:
The green color pigment chlorophyll traps sunlight and this is why photosynthesis occur.
Answer:
chlorophyll
Explanation:
Chapter 21.1 Review
1. What characteristics of living things do viruses have?
2. Compare and Contrast How is viral reproduction different from that of cell-based organisms?
Answer:
1. Living characteristics of viruses include the ability to reproduce – but only in living host cells – and the ability to mutate.
2.Viruses cannot reproduce independently; cell-based organisms can reproduce independently.
Los organismos ____________________ están formados por gran número de células. Las _____________ iguales se unen en tejidos. Cada ____________ realiza una función específica. Los tejidos se agrupan en órganos. Los ______________ que intervienen en la misma función se asocian en __________ o ________. Todo ser vivo está formado por una o más _______. La célula es la estructura más _________ que cumple con todas las funciones _________. Existen dos tipos fundamentales de células: la célula ________, sin ________ y solo un complejo supramolecular llamado ribosoma y la célula ________ con núcleo y muchos y variados ___________ celulares.
Answer:
Multicelular, células, tejido, células, básico, necesario, procariota, núcleo, eucariota y orgánulos.
Explicación:
Los organismos multicelulares están formados por más de una célula y son comparativamente más grandes que las células unicelulares. El mismo tipo de células se unen formando tejidos. Cada tejido realiza una función específica en el cuerpo. Los tejidos se agrupan para formar órganos. Todo ser vivo está formado por una o más células. La célula es la estructura más básica que cumple todas las funciones necesarias del cuerpo. Hay dos tipos fundamentales de células: la célula procariota, sin núcleo y solo un complejo supramolecular llamado ribosoma, y la célula eucariota con núcleo y muchos y variados orgánulos celulares también están presentes en ella.
The Xylem carries ______.
A. water
B. sugar
Answer:
A
Explanation:
The phloem carries sugar
How is UV light sensitive yeast related to the cell cycle/mitosis? please help!!!?
Answer:
TU PUEDES ;>
Explanation:
Why should the general public be concerned about the survival of honeybees
Answer: honeybees are one of the most important pollinators in the world, we do have others but without bees many crops, and plants will die and that will result in animals dying.
Explanation:
Part a:the diagram below shows a cross section of a cell membrane. Describe the basic structure of the cell membrane.
Phospholipid bilayers are the basic building blocks of the membrane.
They form a stable boundary between two water-containing compartments. In a plasma membrane, these two compartments are the interior and exterior of the cell.
A cell membrane is a sheet of double membrane that mainly consists of lipids. These membranes are semi-permeable, meaning that some molecules are able to pass through the lipids bilayer, while others are unable to.
Small hydrophobic molecules (e.g., oxygen or carbon dioxide) pass through membranes rapidly. Similarly, small polar molecules (i.e., water and ethanol) pass through membranes more slowly.
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What feature of embryology makes it capable of providing data for common evolutionary history not readily available from other sources
The Group of choices associated with the question is as follows:
A) As the embryo develops, it reveals the expression of genes.
B) The growth of the embryo is achieved by the differentiation of cells.
C) A developing embryo exhibits structures not present in the adult animal.
D) The development of embryos of a certain species is consistent
Answer:
The correct answer is - C) A developing embryo exhibits structures not present in the adult animal.
Explanation:
The study of the development of anatomy to the adult form of an organism is embryology that helps in giving an idea about the evolutionary development and considered as embryological evidence which lost after developing into adult such as analogous structures.
Embryos are the structure that conserves the development pattern of widely divergent groups of organisms and therefore, used as evidence of evolutionary development.
How do plants obtain their energy?
Answer:
they obtain their energy from the sun and water and pollen
Explanation:
Sorry if I'm wrong have a good one!
Describe reasons for the fluctuation of the population.
CAN SOMEONE PLEASE HELP ME!!!!!! THIS IS MY LAST CHANCE!!!!
How is a typhoon formed?
Answer:
A typhoon forms when winds blow into areas of the ocean where the water is warm. These winds collect moisture and rise, while colder air moves in below. This creates pressure, which causes the winds to move very quickly. The winds rotate, or spin, around a center called an eye.
Explanation:
Answer:
Compared to tropical cyclone, we have a few main requirements for typhoon development:
1. sufficiently warm sea surface temperatures,
2. Atmospheric instability,
3. High humidity in the lower to middle levels of the troposphere,
4. Enough Coriolis effect to develop a low pressure center,
5. pre-existing low level focus or disturbance, and
6. low vertical wind shear.
Explanation:
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Answer:
Explanation:
13.5 billion years
How can people best use scientific research on climate change?
A. To create jobs for scientists who study global warming
B. To mitigate the impact of global warming
C. To win debates about global warming
D. To elect politicians who believe in global warming
Answer:
B
Explanation:
What are all of the secondary consumers included in this web?Herring
Sprat
Gray seal
Saduria entomon
Monoporeia affinis
Procedure
1. Drop a stone into a glass carefully. Observe what happens to the shape and
size of the stone
Question 1. Did the stone take the shape of the glass?
2. This time transfer the stone to a pail. Observe what happens to the shape and size
of the stone.
Question 2. Did the particle of the stone change in shape?
Question 3. Explain the properties of solid based on the particle nature of matter?
Answer:
No.
Explanation:
No, the stone did not take the shape of the glass because stone is not a liquid, it is a solid. Taking the shape of the container in which it is placed is the property of liquid matter whereas the solid maintain its shape and structure when placed in any container. No, the stone did not change the shape and structure when it is placed in the pail due to its solid matter. The properties of matter are the following: It is composed of tightly packed particles which make the matter solid. It maintains its shape and its particles can't move freely like gas and liquid particles.