Answer:
female conception. females and males have 46 chromosomes in 23 pairs. the female's egg (ovum) has 23 chromosomes, and the male's sperm has 23 chromosomes. fertilization occurs. a zygote is formed, containing 46 chromosomes in 23 pairs. meiosis occurs, and the embryo is formed. after after becoming an embryo after being a 4-cell blastomere and a blastocyst after 6 days, after 23 days, it develops (as an embryo) for 33 days, it becomes a fetus and is usually birthed after 9 months of pregnancy.
Describe each fundamental characteristic of science in your own words.
Observable:
Testable:
Replicable:
Reliable:
Flexible:
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Science is based on the observation of phenomena of the real world, testable to be verifiable, replicable and reliable because conducts equal outcomes and flexible due to new evidence may lead to change.
What is science?The word science is a broad term that refers to all body of knowledge based on empirical evidence, which can be tested to be verified and replicated in different experiments. The scientific results must be reliable because it allows generating theories and the development of new hypotheses.
Therefore, we can conclude that science is based on verifiable and replicable facts in experimental procedures. The scientific results are flexible because new evidence may modify old theories.
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Sam is investigating the factors that affect photosynthesis. She keeps some plants in the dark for 24–48 hours. They receive no light. What does this remove from the plants?
Keeping the plants in the dark for 24-48 hours removes the source of light from the plants.
Light is one of the essential factors required for the process of photosynthesis in plants.
During photosynthesis, plants use light energy to convert carbon dioxide and water into glucose and oxygen. This process takes place in specialized cell structures called chloroplasts, which contain the pigment chlorophyll that captures light energy.By depriving the plants of light for an extended period, the plants are unable to carry out photosynthesis. As a result, they are unable to generate the energy-rich molecules necessary for their growth, development, and survival.Without the presence of light, plants cannot perform the chemical reactions involved in photosynthesis and cannot produce the required carbohydrates and other organic compounds.Thus, the plant's source of light is removed by keeping them in the dark for 24 to 48 hours.
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Why water and air are compounds while carbon and gold are elements
An enzyme that follows simple michaelis–menten kinetics has an initial reaction velocity of 10 μmol⋅min−1 when the substrate concentration is five times greater than the km. What is the vmax of this enzyme?.
The Vmax of the enzyme is 12 μmol⋅min−1
We use Michaelis-menten equation, which is given by;
[tex]V=\frac{Vmax(S)}{Km+(S)} \\[/tex]
Where v is velocity of reaction
Vmax = maximum rate achieved by the system
[S] = concentration of a substrate
K[tex]_{m}[/tex]= Michaelis constant
Given V[tex]_{0}[/tex] = 10[tex]umolmin^{-1}[/tex]
[S] = 5km
Now, we calculate Vmax:
10[tex]umolmin^{-1}[/tex] = [tex]\frac{Vmax*(5Km)}{Km+5Km}[/tex]
Km = 1
[tex]10=\frac{5KmVmax}{6Km}[/tex]
[tex]\frac{10*6}{5} =Vmax[/tex]
[tex]Vmax[/tex] =12 μmol⋅min−1
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Give two reasons why and engineer should have more than one idea when brainstorming possible solutions
Answer:
because it's better to have more than one answer first ok second and supports your first answer
In order to maintain blood sugar homeostasis, your body does the following things. After eating a meal, what is the correct order in which they occur?
1) The level of glucose in the body decreases. Search
2) The body digests and absorbs food molecules.
3) The pancreas releases insulin, which triggers cells to take in more glucose.
4) The level of glucose in the blood increases.
A. 1,2,3,4
B. 2, 1,4,3
C. 3,1,2,4
D. 2,4,3,1
help please !!!¡!!!!!!!!!!!!!!!!!!!!!!!
If the gametes produced by a given organism contain 6 chromosomes, how many chromosomes are found in that organism's body cells?
3
6
12
10
Answer:
12
Explanation:
I think its 12 because gametes are haploid which means they have a single set of chromosomes and body cells are diploid, which means they have double.
During fertilization the two haploid gametes join creating a diploid zygote which multiplies by mitosis into more diploid cells
Proteins are made by cells based on the dna sequences found in genes. Which cell organelle acts as a distribution center by creating vacuoles to transport proteins to different locations around the cell?.
Endoplasmic reticulum
Endoplasmic reticulum (ER) is found in both plant and animal's cell.
It is located close to the nuclear membrane and extend throught the cytoplasm. It is said to be the largest organellethe cell
ER is responsible for a number of functions including protein synthesis and lipid metabolism
It also produce vacuoles that transfer protein from the site of production to other parts of the cell.
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What other fields, besides medicine, currently use gene editing?
Answer:
Cancer research
Cardiovascular disease
Metabolic diseases
Neurodegenerative diseases
Viral diseases
Hereditary eye diseases
how does your body use the protein once it has been ingested? consider the following statements and select the correct ones regarding protein use. select all that apply.
When a protein source reaches your stomach, hydrochloric acid and proteases enzymes convert it into smaller chains of amino acids.
Peptides, that are broken down by proteases, are also what link amino acids. These smaller chains of amino acids go from your tummy to your small bowel.
What happens to the body when it uses protein as a source of energy?However, protein is broken down into ketone bodies to be utilised for energy if the body is not acquiring enough calories from other foods or from the fat stored in the body. The body breaks down excess protein and stores its constituent parts as fat if it is ingested.
Consumed protein is converted to amino acids by the body and then absorbed. It is utilised in the development of muscles and organs, the production of hormones and antibodies, the storage of fat, and the production of energy.
The small intestine is where protein digestion finishes after starting in the stomach. A stomach enzyme called pepsin starts the breakdown of proteins.
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Which is the process of data gathering that uses instruments on satellites aircraft’s or ships?
Answer: Remote Sensing
Explanation: The process of gathering data about Earth using instruments mounted on satellites, airplanes, or ships is called remote sensing. Landsat satellites record reflected wavelengths of visible light and infrared radiation from Earth's surface, and then computers convert the information into digital images.
PHOSPHOLIPID
Another type of lipid in the cell membrane is______ that makes the membrane more fluid. Embedded in the phospholipid bilayer are_____that also aid in diffusion and in cell recognition. Proteins called_____proteins go all the way through the bilayer, while______proteins are only on one side. Integral proteins are also called______proteins.
Large molecules like ________ or carbohydrates use proteins to help
move across cell membranes.
Some of the membrane proteins have
carbohydrate________ attached to help cells in recognize each other and certain molecules.
List 4 functions of the cell or plasma membrane:
a.
b.
C.
d.
Answer:
Another type of lipid in the cell membrane is cholesterol that makes the membrane more fluid.
Embedded in the phospholipid bilayer are proteins that also aid in diffusion and in cell recognition.
Proteins called transport proteins go all the way through the bilayer, while integral proteins are only on one side.
Integral proteins are also called transmembrane proteins.
Large molecules like lipids or carbohydrates use proteins to help move across cell membranes.
Some of the membrane proteins have carbohydrate glycoproteins attached to help cells in recognize each other and certain molecules.
List 4 functions of the cell or plasma membrane:
1.) identification
2.) communication
3.) regulation of solute exchange through the membrane
4.) isolation of the cytoplasm from the external environment
Which kind of dormancy happens when a plant goes dormant after conditions are unfavorable?
(A) consequential dormancy
(B) photoperiod dormancy
(C) seasonal dormancy
(D) predictive dormancy
Answer:
(A) consequential dormancy
Explanation:
Which of the following is not part of the chemical level of organization?
macromolecules
elements
organelles
atoms
Answer:
atoms
Explanation:
Atoms and molecules are part of the chemical level of organization of the human body.
if a medical researcher wanted to prevent communication between cells in order to cure a disease or prevent a malady, how might they achieve that? propose a method that could be used to stop a signal transmission from cell to cell.
Increase ligand production and amplify receptor production and ingest a pharmaceutical form of a ligand.
What are the cells?The corresponding value of all living things are cells. There are numerous billions of cells inside a human body. They give the body structure, reabsorb from meals, turn it into power, and carry out specific functions.
What materials make up cells?Cells are made of water, metal salts, and carbon-based (organic) molecules. Cells are mostly composed of water molecules, which account for at least 70% of their mass. Because of this, knowing the interplay among water and other cell components is essential.
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Explain what a keystone species is and why they are essential to a particular ecosystem. How do keystone species
factor in the overall food web of that ecosystem?
A keystone species is an organism that enables outline a whole ecosystem. By retaining populations of mussels and barnacles in check, this sea famous person enables make sure healthful populations of seaweeds and the groups that feed on them—sea urchins, sea snails, limpets, and bivalves.
A keystone species exerts top-down impact on decrease trophic degrees and forestalls species at decrease trophic degrees from monopolizing crucial resources, which includes opposition for area or key manufacturer meals sources. This paper represented a watershed withinside the description of ecological relationships among species.
Keystone species preserve collectively the complicated internet of relationships in an ecosystem. They may be animals, plant life or microorganisms. Examples of keystone species consist of starfish, sea otters, wolves and elephants.
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the creation, modification, and shipping of proteins that are released from the cell happens in this/these organelle(s) found in large quantities in hormone and enzyme producing cells of the pancreas.
The creation, modification, and shipping of proteins that are released from the cell happens in Rough Endoplasmic Reticulum (RER) and Golgi Apparatus organelle(s) found in large quantities in hormone and enzyme-producing cells of the pancreas.
Rough Endoplasmic Reticulum (RER) are have ribosomes attached to their outer membrane. These ribosomes are referred to as the protein manufacturing place of a cell. The ribosomes are the site where tRNA brings amino acids to code with the mRNA so that proteins can be produced. Hence, the creation of proteins occurs in the Rough Endoplasmic Reticulum (RER) of a cell.
The proteins, after creation, are sent to the Golgi apparatus which carry out the function of modification and transport of proteins. Without post-translational modifications, a protein will not be able to travel outside of the cell.
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During chemiosmosis, hydrogen ions accumulate in the ______ of the mitochondrion to create a large electrochemical gradient for aerobic cellular respiration.
Answer:
I believe it's the Thylakoid compartment, I would still try to get some other opinions on it but I'm like 90% sure especially if it's something you've been hearing it a lot in class
the end‑replication problem (telomere problem) exists in eukaryotic chromosomes and is characterized by the chromosomes shortening with each round of dna replication.
Each replication cycle results in an incomplete replication of the DNA near the extreme end of the chromosome, gradually shrinking the chromosome.
What is the root cause of the eukaryotic chromosome end replication problem?Eukaryotes have linear, rod-shaped chromosomes that have ends as opposed to bacteria, which have circular chromosomes. DNA replication is difficult as a result of these ends. Each replication cycle results in an incomplete replication of the DNA near the extreme end of the chromosome, gradually shrinking the chromosome.
What specifically is the replication issue at the telomere end?Telomeres shorten as a result of regular DNA polymerases' incomplete copying of linear DNA molecules during cell division. The end replication problem is the name given to this [6]. The process of resection and fill-in that occurs during the synthesis of the telomere leading-strand is mostly to blame for this.
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Which of the following is about chromosome pair number 1 till chromosome pair number 22?
The first 22 pairs of chromosomes are called autosomes.
By international convention, human autosomes, or non-sex chromosomes are numbered in descending order of size from 1 to 22. The exceptions are chromosomes 21 and 22 the former of which is actually the smallest autosome. Sex chromosomes are usually placed at the end of the cardiogram. Twenty-two of these pairs, called autosomes, look the same in males and females.
In the 23rd pair, the sex chromosomes differ between males and females. A female has two copies of her x chromosome, while a male has one of her x chromosome and one of her Y chromosome. The 22 autosomes are numbered by size. Chromosome 1 probably contains 2,000 to 2,100 genes that give instructions for making proteins. These proteins perform different functions in the body. Chromosome 22 contains perhaps 500 to 600 genes that give the instructions for making proteins. These proteins perform different functions in the body.
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Could someone do theses for me?
The answers include the following:
Water moves through the hydrological cycle by the sun first heating up the water bodies and plants which results in evaporation and transpiration respectively.Carbon moves through the carbon cycle by photosynthesis in which plants produce food.What is Photosynthesis?This is the process in which green plants manufacture their food in the presence of sunlight and ensures carbon is moved in the carbon cycle.
Plants produce food such as glucose which contains carbon and animals take in oxygen and breathe out carbon dioxide via respiration .It also moves through the cycle as a result of combustion of fossil fuels such as coal etc.
Water moves through the hydrological cycle by the sun first heating up the water bodies and plants which results in evaporation and transpiration respectively. The vapor is then condensed to form clouds and then precipitation occurs which results in rain etc.
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A _____________ factor is any living part of an environment.
Answer:
A biotic factor is any living part of an environment
Answer: A Biotic factor is any living part of an environment.
The South American song is similar to songs from Africa because . . .
description and observations of star gazing
The description and observations of star gazing is that the motion of stars is one that is seen as Diurnal motion where stars as well as other kind of celestial bodies is seen across the sky. This motion is seen as Earth's tends to rotate from west down to the east, which makes celestial bodies to also move from east to west.
What do you perceive when gazing at the stars?A galaxy is a collection of billions of gravitationally bound stars, the majority of which will have their own Solar System. Finding them and viewing them through a telescope are both enjoyable due to their variety of sizes and forms as well as the various angles from which we view them from Earth.
The rotation of the Earth is what causes this motion. Stars can be seen rising in the east, as well as they are passing overhead, and setting in the west as the Earth spins us eastward at a speed of about what we say a thousand miles per hour.
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9. Circle the letter of each sentence that describes a change in velocity.
a. A moving object gains speed.
b. A moving object changes direction.
A moving obiect moves in a straight line at a constant speed.
Sentence that describes a change in velocity are a moving object gains speed and a moving object changes direction.
What term best expresses an object's change in direction or velocity?Acceleration is that rate at which the speed and direction of a moving object vary over time. A point or object going straight ahead is accelerated when it accelerates or decelerates. Regardless of whether the speed is constant, motion on a circle accelerates because the direction is always shifting.
The primary indicator of both an object's position and speed is its velocity. It is the distance how an object travels in one unit of time. The displacement of the objects in one unit of time is the definition of velocity.
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A growth disfunction in childhood
can sometimes mean a problem
or disease associated with a
particular gland. Name the gland
that is likely to be responsible for
a growth problem in childhood.
Answer: the pituitary gland
Explanation: The condition occurs if the pituitary gland makes too little growth hormone. It can be also the result of genetic defects, severe brain injury or being born without a pituitary gland.
Why does a food like a marshmallow have so little energy?
Answer:
Sugar does not provide a sufficient amount of calories for the body.
Explanation:
Describe how you can distinguish the structures of each of these polysaccharides. Lookat the examples closely and come up with a way to memorize which is which and thenexplain it (do not just simply draw each structure).
starch -
cellulose -
glycogen-
Answer: starch
Explanation:
i had this question
describe one method for identifying the distribution of organelles within the density gradient fractions. in other words, how might you determine which fractions are enriched for p. falciparum mitochondria? golgi bodies? digestive vacuoles?
Cellular components are divided using a process called cell fractionation that keeps each component's unique functions intact.
Which technique is used for protein fractionation?Chromatographic and electrophoretic techniques can also be used to separate proteins into different fractions. By using adsorption chromatography and/or gel filtration, which separates proteins based on their size and shape, different proteins can be separated.
The best technique for isolating organelles is centrifugation. Other methods that take advantage of different physical (such as electrical charge for free flow electrophoresis) or biological (such as ligand affinity for immunoisolation) characteristics have also been used to study complex organelles and membranes.
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