Eating other animals from producers and consumers for energy and matter moves from the nitrogen, water,and carbon cycle
1pt Place the following steps in the correct order:
1. Sperm nuclear envelope breaks down
2. Genomes blend to form a diploid cell
3. Decondensation occurs
4. Sperm head penetrates egg cytoplasm.
Answer:
The delivery of the paternal genome to the egg is a primary goal of fertilization. In preparation for this step, the nucleus of the developing spermatozoon undergoes extensive morphological and biochemical transformations during spermatogenesis to yield a tightly compacted sperm nucleus. These modifications are essentially reversed during fertilization. As a result, the incorporated sperm nucleus undergoes many steps in the egg cytoplasm as it develops into a male pronucleus. The sperm nucleus (1) loses its nuclear envelope, (2) undergoes nucleoprotein remodeling, (3) decondenses and increases in size, (4) becomes more spherical, (5) acquires a new nuclear envelope, and (6) becomes functionally competent to synthesize DNA and RNA. These changes are coordinate with meiotic processing of the maternal chromatin, and often result in behaviors asynchronous with the maternal chromatin. For example, in eggs fertilized during meiosis, the sperm nucleus decondenses while the maternal chromatin remains condensed. A model is presented that suggests some reasons why this puzzling behavior exists. Defects in any of the processes attending male pronuclear development often result in infertility. New assisted reproductive technologies have been developed that ensure delivery of the sperm nucleus to the egg cytoplasm so that a healthy embryo is produced. An emerging challenge is to further characterize the molecular mechanisms that control sperm nuclear transformations and link these to causes of human infertility. Further understanding of this basic process promises to revolutionize our understanding of the mystery of the beginning of new life.
Explanation:
The delivery of the paternal genome to the egg is a primary goal of fertilization. In preparation for this step, the nucleus of the developing spermatozoon undergoes extensive morphological and biochemical transformations during spermatogenesis to yield a tightly compacted sperm nucleus. These modifications are essentially reversed during fertilization. As a result, the incorporated sperm nucleus undergoes many steps in the egg cytoplasm as it develops into a male pronucleus.
Conduction can only occur between two objects when –
Answer:
Conduction can only occur between two objects when -
one object is less dense than the other. both objects are in physical contact with each other.
What is the definition of the word Transformation
Answer:
significa el resultado de un proceso de cambio de forma. Sucede cuando una cosa, hecho o idea es convertida en otra.
Explanation:
The change in leaf color on these trees is one way the trees maintain what
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2. What is a convergent boundary? Name one example of a convergent boundary.
3. What is a transform boundary? Name one example of a transform boundary.
4. Using the map provided, where are convergent boundaries typically found on the earth (middle of oceans or near edges of continents)?
5. Using the map provided, where are divergent boundaries typically found on the earth (middle oceans or near edges of continents)?
Explanation:
2. A convergent boundary is an area on earth where two or more lithospheric plates collide. The Oregon-Washington coastline is an example of this boundary.
3. A transform boundary is a fault along the plate boundary where the motion is predominately horizontal. An example of this is the Alpine Fault in New Zealand.
What characteristics do mutations have? select all that apply.
omission of information
always harmful
addition of information
mistakes in copying
occasionally beneficial
Answer:
all of above
Explanation:
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Answer:
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If a device is removed from one loop in a parallel circuit, the other devices are not affected and can still flow through them.
Answer:
yes it still can flow through i hope that helped you
Explanation:
Answer:
Yes
Explanation:
Seafloor spreading happens mostly under the sea except in
15. There are 23 gamete cells in
Your answer:
Meisois
O Cytokineisis
Mitosis
Answer:
Mitosis
Explanation:
The term haploid can also refer to the number of chromosomes in egg or sperm cells, which are also called gametes. In humans, gametes are haploid cells that contain 23 chromosomes, each of which a one of a chromosome pair that exists in diploid cells.
Which is greater concentration in normal air, the concentration of oxygen gas or carbon dioxide gas?
Explanation:
The concentration of oxygen in air is about 500 times higher than CO2, but oxygen is about 50 times less soluble.
Primary source of energy
Used for movement cell defense, cell structure, communication, and cell regulation
Composes the outside of the cell membrane
Carries hereditary information
Pair each structure with its function:
*Nucleic acid
*Protein
*Lipid
*Carbohydrate
*Water
Answer:
Despite differences in structure and function, all living cells in multicellular organisms have a surrounding cell membrane. Just as the outer layer of your skin separates your body from its environment, the cell membrane (also known as the plasma membrane) separates the inner contents of a cell from its exterior environment. This cell membrane provides a protective barrier around the cell and regulates which materials can pass in or out.
Structure and Composition of the Cell Membrane
The cell membrane is an extremely pliable structure composed primarily of two layers of phospholipids (a “bilayer”). Cholesterol and various proteins are also embedded within the membrane giving the membrane a variety of functions described below.
A single phospholipid molecule has a phosphate group on one end, called the “head,” and two side-by-side chains of fatty acids that make up the lipid “tails” (Figure 3.1.1). The lipid tails of one layer face the lipid tails of the other layer, meeting at the interface of the two layers. The phospholipid heads face outward, one layer exposed to the interior of the cell and one layer exposed to the exterior (Figure 3.1.1).
This diagram shows the structure of a phospholipid. The hydrophilic head group is shown as a pink sphere and the two tails are shown as yellow rectangles. This diagram shows a phospholipid bilayer. Two sets of phospholipids are arranged such that the hydrophobic tails are facing each other and the hydrophilic heads are facing the extracellular environment.
Figure 3.1.1 – Phospholipid Structure and Bilayer: A phospholipid molecule consists of a polar phosphate “head,” which is hydrophilic and a non-polar lipid “tail,” which is hydrophobic. Unsaturated fatty acids result in kinks in the hydrophobic tails. The phospholipid bilayer consists of two adjacent sheets of phospholipids, arranged tail to tail. The hydrophobic tails associate with one another, forming the interior of the membrane. The polar heads contact the fluid inside and outside of the cell.
The phosphate group is negatively charged, making the head polar and hydrophilic—or “water loving.” A hydrophilic molecule (or region of a molecule) is one that is attracted to water. The phosphate heads are thus attracted to the water molecules of both the extracellular and intracellular environments. The lipid tails, on the other hand, are uncharged, or nonpolar, and are hydrophobic—or “water fearing.” A hydrophobic molecule (or region of a molecule) repels and is repelled by water. Phospholipids are thus amphipathic molecules. An amphipathic molecule is one that contains both a hydrophilic and a hydrophobic region. In fact, soap works to remove oil and grease stains because it has amphipathic properties. The hydrophilic portion can dissolve in the wash water while the hydrophobic portion can trap grease in stains that then can be washed away. A similar process occurs in your digestive system when bile salts (made from cholesterol, phospholipids and salt) help to break up ingested lipids.
Terrence likes to eat morel mushrooms, which are native to Georgia. How do the kingdoms to which humans and morels belong DIFFER? How are they SIMILAR?
Answer:
Mushrooms are in kingdom Fungi and humans are in kingdom Animalia
Explanation:
These two kingdoms are similar in that they are both in Domain Eukarya, meaning they have eukaryotic cells (have a nucleus, membrane bound organelles, are relatively large and organized). Both are also heterotrophic, meaning they eat other organisms to get energy. They are different in that fungi cells have cell walls made of chitin while animals do not have cell walls. Fungi tend to live pretty sedentary lives, and while that is true for some animals, that is not true of most. Fungi are also decomposers while animals are consumers.
Changes in weather are caused by the movement and interaction of _______ ______________. What should I fill the blanks in with?
Answer:
Air masses
Explanation:
An air mass is a volume of air defined by its temperature and water vapor content. Air masses adapt to the characteristics of the surface below them.
The Punnett square predicts the ratio of genotypes in the offspring, based on the genotypes of the parents. The Punnett square below examines the chance of offspring having freckles, which is a dominant trait.
A Punnett square is shown. The columns are labeled Upper F and f. The rows are labeled Upper F and f. Clockwise from upper left the boxes contain: Upper F Upper F, Upper F f, Upper F f, f f.
Based on the Punnett square, what is the probability that the offspring will have freckles?
25 percent
50 percent
75 percent
100 percent
Answer:
75%
Explanation:
Three of the boxes contain an Upper case F, therefore 75% of the boxes have an Upper case F. It's like quarters, if you have 4 quarters you have 100 cents, if you have 3 you have 75 cents, if you have 2 you have 50 cents, and if you have 1 you have 25 cents.
Answer:
C.) 75 percent
Explanation:
Calculate: If you ate a meal of 2000 Joules, used up 500 Joules in the
gym, your body. used up 746 Joules in metabolism, what is the amount of Joules
you will store as energy. What is the percentage amount of food eaten that was not
used up. Explain the conservation of energy using an equation
Answer:
What you do here is take 2000 divide it by 100 and that will give you what amount used is the percentage is used
Explanation:
62.3% of joules was used, That is all i will help you on
A student wanted to see if covering a leaf in foil would stop it from producing starch. Why should the student put the plant in a dark cupboard for 48 hours before returning it to the light and starting the experiment?
1. To make the results reliable
2. So that the plant would photosynthesise faster when returned to the light
3. So that any starch already in the leaf was used up by the plant
4. He did that simply
Answer:
4.) He did that simply
Explanation:
I'm just guessing it's 1 because the other answers don't seem reasonable
Answer:
Putting the plant in dark for 48 hours would stop the process of photosynthesis as light is required for it. Photosynthesis produces organic sugars which are stored in form of starch in plants. The absence of photosynthesis would lead to the consumption of all stored starch making the leaf starchless. The correct answer is option D.
Explanation:
True or false: Glucose the food of plants .
Answer:
True
Explanation:
Plants use the energy of the sun to change water and carbon dioxide into a sugar called glucose. Glucose is used by plants for energy and to make other substances like cellulose and starch.
Plants take in carbon dioxide from the atmosphere.
Figure 2 shows part of the carbon cycle.
Describe how carbon from the atmosphere is cycled through living organisms.
Answer:
Carbon enters the atmosphere as carbon dioxide from respiration and combustion. Carbon dioxide is absorbed by producers to make glucose in photosynthesis. ... Decomposers break down the dead organisms and return the carbon in their bodies to the atmosphere as carbon dioxide by respiration.
Explanation:
hope it helps
Which organisms are both heterotrophic and autotrophic?
Answer:
Pitcher Plant ( venus fly trap) has both autotrophic and heterotrophic mode of nutrition. They can prepare their own food like any other plant.
Explanation:
Answer:
Cyanobacteria
Explanation:
This type of bacteria is a heterotrophic and autotrophic organism. They exhibit photoautotrophic nutrition. Sorry for the wait, I had to do some research about this.
-Aslina
Oil is primarily used for...
A. Cooking/Home uses
B. Electricity
C. Transportation
D. Industrial uses
help me please please
Answer:
A
Explanation:
What is artificial selection? How is the development of different dog breeds an illustration of artificial selection?
Answer:
Artificial selection is process in which humans select the traits in animals and plants and use animal breeding or plant breeding to produce the animal or plants with desired traits.
Different dog breeds is very good example of artificial selection because with the help of artificial selection humans can drastically alter the appearance of dogs. With artificial selection human can develop Great Dane from the tiny Chihuahua.
Answer:
When humans breed animals for a specific trait.
Explanation:
Ap Ex
which is not characteristic of mammals
(A) hair covering
(B) 3 chambered heart
(C) produce milk
(D) produce sweat
Answer:(C) produce milk
Explanation:
Answer:
I guess it is (B) 3 chambered heart
Our traits come from ______material.
Answer:
Genetic
Explanation:
If a mutation helps an offspring survive and reproduce, the mutation can become an____ in future generations.
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Answer:
An adaptation
Explanation:
If the mutation has a positive effect on the fitness of the offspring, it is called an adaptation.
How does an amoeba breathe
Answer:
Amoebas have a semirigid layer of ectoplasm which absorbs oxygen from the surrounding water and eliminates carbon dioxide in a form of respiration.
Explanation:
hope this helps
What kind of symptoms do some human papillomaviruses cause?
Answer:
In most cases, HPV goes away on its own and does not cause any health problems. But when HPV does not go away, it can cause health problems like genital warts and cancer. Genital warts usually appear as a small bump or group of bumps in the genital area.
Explanation:
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Answer:
genital warts and genital cancer
Explanation:
why do you think there is so much life on our planet ?
Answer:
Earth's atmosphere and surrounding supports life.
Explanation:
The oxygen, nitrogen and carbon that's abundant on Earth promotes life.
Which of the following describes a state of equilibrium?
Answer:
the condition of a system when neither its state of motion nor its internal energy state tends to change with time.
or b partially
Plants can help prevent erosion or contribute to erosion. Which describes how plants could contribute to erosion?
a
Plant roots grow in rocks, breaking the rocks.
b
Plants break the impact of raindrops before they hit the soil.
c
Plants slow the runoff of water and soil.
d
Plant roots hold the soil in place against wind.
Answer:
a
Explanation:
the others ones described plants helping to stop erosion
Answer:
The Answer is A
Explanation:
Plant roots grow in rocks, breaking the rocks.