how many chromosomes do human sperm and egg cells have?

Answers

Answer 1
They have 23 chromosomes

Related Questions

compare and contrast classical and operant conditioning

Answers

Both are processes that lead to learning. Classical conditioning pairs two stimuli and works with involuntary responses, while operant conditioning pairs behavior, response, and works with voluntary behaviors.

In classical conditioning, the involuntary response is seen, while operant conditioning is based upon the learning experience. An organism will perform more or less based on its experience with operant conditioning.

What are classical conditioning and operant conditioning?

In classical conditioning, the stimulus is given and an involuntary response is observed. The Pavlov experiment on dogs is one example. He gave food to the dog and rang the bell at the same time for some days. After that, he only rang the bell, and the dog salivated without the food. Here, salvation is an involuntary response to the stimulus (bell ringing).

In operant conditioning, animals perform actions based on their experience. Example: A mouse is put in a box with an electric supply and food supply. When the mouse accidentally presses the electric switch, it gets an electric shock. This is negative reinforcement, and the mouse is less likely to perform the same function again. When it pushes the food lever, the food comes from the food box. This is positive reinforcement. The mouse is more likely to perform this.

Hence, in classical conditioning, the involuntary response is seen. Operant conditioning is based on learned experience.

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ماهو تركيب الجينينوم البشري؟

Answers

Answer:

لدى البشر جينومان ، نووي وميتوكوندريا

Answer: يشتمل الجينوم النووي على ما يقرب من 32000000 نيوكليوتيدات من الحمض النووي ، مقسمة إلى 24 جزيء خطي ، وأقصر 5000000 نيوكليوتيد في الطول وأطول 260000000 نيوكليوتيد ، كل منها موجود في كروموسوم مختلف.

Explanation:

help pls answer the question at the bottom

Answers

Answer:

no

Explanation:

the lizerd is cold blooded

escribe los pasos que le hacen falta al progreso productivo​

Answers

Answer:

Hablo español con fluidez. ¿Con qué necesitas ayuda?

Explanation:

what organelle transports materials within the cell

Answers

Answer:

The endoplasmic reticulum

Explanation:

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biologists think that endosymbiosis gave rise to mitochondria before plastids partly because:

Answers

Biologists think that endosymbiosis gave rise to mitochondria before plastids partly because: (All eukaryotes have mitochondria whereas many eukaryotes do not have plastids)

1. Which layer is found at Earth's center?

mesosphere
mantle
crust
core

Answers

Answer:

The Core

Explanation:

The very center of the earth is called the core.

The core layer is located at the center of the Earth.

What is center of earth?All land surfaces on Earth have a geometric center that is located at the planet's geographic center. According to geometry, it is the centroid of all land areas inside the two dimensions of the geoid surface, which roughly represents the exterior shape of the planet.The extremely hot and dense core of our planet is called the Earth's core. Underneath the chilly, brittle crust and the largely solid mantle is the ball-shaped core. The Earth's core is around 2,900 kilometres (1,802 miles) below the surface and has a radius of about 3,485 kilometres.Since the temperature and pressure significantly rise as we travel more inside the planet, we are unable to reach the center of it. Furthermore, there is currently no technology that can penetrate the depths of the earth.

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in gene expression, which enzyme is responsible for transcribing the dna sequence into mrna by adding complementary rna nucleotides?

Answers

Answer:

RNA polymerase II

The main function of the
rough endoplasmic reticulum is the production of

Answers

generally the rough endoplasmic reticulum is to produce proteins called ribosomes

The main function of the Rough Endoplasmic Reticulum is the production of membrane and proteins secreted by the cell.

What is Endoplasmic Reticulum?

The endoplasmic reticulum serves as the transport system of the eukaryotic cell, with many other important functions such as protein folding. It is a type of organelle made up of two subunits –

1. Rough endoplasmic reticulum (RER)

2. Smooth endoplasmic reticulum (SER)

It has a continuous nuclear envelope. The endoplasmic reticulum contains ribosomal granules anchored to the cytoplasmic surface of the cisternae is involved in the synthesis and secretion of proteins through membrane-bound vesicles called ergastoplasms.

Thus, the main function of the Rough Endoplasmic Reticulum is the production of membrane and proteins secreted by the cell.

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why do the functions of many receptor kinases depend on the fluid nature of the plasma membrane?

Answers

Complete Question

Why do the functions of many receptor kinases depend on the fluid nature of the plasma membrane?

The generation of cAMP requires a fluid membrane.Binding of ligand to the receptor requires a fluid membrane. The receptor monomers must move together and dimerize to be activated. Phosphorylation requires a fluid membrane.

We have that

The reason why the functions of many receptor kinases depend on the fluid nature of the plasma membrane is because

Phosphorylation requires a fluid membrane.

Generally

kinase

This substance is simple defines as a facilitator for phosphate forms to move from a specific energy level to its specific sub levels

 

Now we recognize this phenomenon as Phosphorylation Phosphorylation being a process that  facilitates the movement of phosphates requires a fluid membrane.

Therefore

The reason why the functions of many receptor kinases depend on the fluid nature of the plasma membrane is because

Phosphorylation requires a fluid membrane.

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please help its due today 50pts
appreciate it
You may choose either a plant cell or an animal cell. You must include the following parts of the cell:

Cell Wall (Plant only)
Cell Membrane
Cytoplasm
Nucleus
Endoplasmic Reticulum
Golgi
Ribosomes
Lysosomes
Vacuoles
Chloroplasts (Plant only)
Mitochondria


Cell City Map

Draw (or create a drawing using a program like PowerPoint) a city map and label locations that are analogous to the parts of the cell.

Your map should:

Include illustrations of each location.
A legend that identifies each location and explains how it relates to each part of the cell.
Be colorful, clear, and carefully drawn.
(Solo or Group)



Cell Story

Write a story in which the setting or the characters are analogous to parts of the cell. Throughout your story, you will include footnotes linking your setting elements or characters to parts of the cell. Your explanations must highlight a key characteristic of each part of the cell.

Your story should:

Include representations of each part of the cell.
Include footnotes explaining the links between your representations to the parts of the cells
Be written with proper grammar, spelling, and formatting.

Answers

Answer: cytoplasm: a thick solution that fills each cell and is enclosed by the cell membrane.

Nucleus:the central and most important part of an object, movement, or group, forming the basis for its activity and growth.

Explanation:

baby jamison was born with . this is a genetic disorder in which the lungs are clogged with large quantities of abnormally thick mucus.

Answers

Baby jamison was born with Cystic Fibrosis (CF)

what was the path of darwin’s voyage

Answers

In 1831, Charles Darwin received an astounding invitation: to join the HMS Beagle as ship's naturalist for a trip around the world. For most of the next five years, the Beagle surveyed the coast of South America, leaving Darwin free to explore the continent and islands, including the Galápagos.

Answer:

In 1831, Charles Darwin received an astounding invitation: to join the HMS Beagle as ship's naturalist for a trip around the world. For most of the next five years, the Beagle surveyed the coast of South America, leaving Darwin free to explore the continent and islands, including the Galápagos.

Explanation:

Most of the trip was spent sailing around South America. There Darwin spent considerable time ashore collecting plants and animals. Darwin filled notebooks with his observations of plants, animals, and geology. The trip was an almost five-year adventure and the ship returned to Falmouth, England, on October 2, 1836.

Calculate the magnification of an object with length 4cm , if the length of the drawing is 40cm

Answers

Answer:

-0.33

Explanation:

during the process of ________, an existing tissue is replaced by bone.

Answers

Answer:

Tissues are replaced by bone during the ossification process.

Explanation:

which layer consists on average of 25 to 30 layers of flattened dead keratinocytes.

Answers

Answer:

the Stratum Corneum

Explanation:

Definition most superficial layer; composed of 25-30 layers of flattened, dead keratinocytes constantly being shed and replaced

What is happening to the chromosomes in this phase of mitosis?

Answers

Answer: The answer is A

During mitosis (nuclear division), the chromosomes condense, the nuclear envelope of most cells breaks down, the cytoskeleton reorganizes to form the mitotic spindle, and the chromosomes move to opposite poles. Chromosome segregation is then usually followed by cell division (cytokinesis).

the lysis of red blood cells in blood agar is indicative of the presence of which enzymes?

Answers

 cause of hemolysis is the action of hemolysins, toxins that are produced by certain pathogenic bacteria or fungi. Another cause is intense physical exercise. Hemolysins damage the red blood cell's cytoplasmic membrane, causing lysis and eventually cell death.

Explanation: One cause of hemolysis is the action of hemolysins, toxins that are produced by certain pathogenic bacteria or fungi. Another cause is intense physical exercise. Hemolysins damage the red blood cell's cytoplasmic membrane, causing lysis and eventually cell death.

BAP assesses an organism's ability to produce hemolysins, enzymes that damage/lyse red blood cells (erythrocytes). The degree of hemolysis caused by these hemolysins aids in the identification of members of the genera Staphylococcus, Streptococcus, and Enterococcus.

What hemolytic pattern does S aureus shows on BAP?

On blood agar plates, colonies of Staphylococcus aureus are often encircled by zones of clear beta-hemolysis. The golden appearance of colonies of some strains is the etymological root of the bacteria's name; aureus meaning "golden" in Latin.

The action of hemolysins, toxins produced by certain pathogenic bacteria or fungi, causes hemolysis. Intense physical activity is another cause. Hemolysins cause lysis and eventually cell death by damaging the cytoplasmic membrane of red blood cells.

The action of hemolysins, toxins produced by certain pathogenic bacteria or fungi, is one cause of hemolysis. Intense physical activity is another cause.

Thus, Hemolysins cause lysis and eventually cell death by damaging the cytoplasmic membrane of red blood cells.

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the three main types of scientific investigations are descriptive, comparative, and experimental. Which components are included in all three types of investigations?

Answers

Answer:

testing a hypothesis

Explanation:

which superficial flexor muscle of the forearm is the most lateral?

Answers

Answer:

pronator teres

Explanation:

please help for biology

Answers

Answer:

the first one

Explanation:

The human population can maintain an exponential growth rate indefinitely because humans are exempt from population crashes.


True

False

Answers

Answer:

Most likely false

Explanation:

Humans aren't exempt from population crashes, if we spent up our recourses, started wars, etc. It HAS happened before, so most likely false.

during inhalation, the thoracic cavity ___________; during exhalation, the thoracic cavity ___________.

Answers

Answer:

increases and then decreases

What is the chemical energy molecules used by cells

Answers

Answer:

Adenosine 5'-triphosphate, or ATP

Explanation:

Answer:Adenosine 5'-triphosphate, or ATP

Explanation:

after the blood leaves the heart, through what kinds of vessels and in what order does the blood move?

Answers

Answer: the pulmonic valve, into the pulmonary artery and to the lungs.

Explanation:

what factors influence the size of the zone of inhibition for an antibiotic

Answers

Answer:

Diffusion of the antibiotic, the size of the inoculum, the type of medium, and resistance mechanism of organism.

Explanation:

There are multiple factors that determine the size of a zone of inhibition. Including drug solubility, rate of drug diffusion through agar, the thickness of the agar medium, and the drug concentration impregnated into the disk.

I hope this helps!

Suggest how the scent from the flowers
spreads out into the air

Answers

Answer:

through diffusion

Explanation:

I think so that by diffusion this occurs

Answer:

Pollinators which may be insects, birds, or other animals would reach the flower by being stimulated through their sense of smell. The scent from flowers gets spread through the air everywhere because the scent producing molecules are low weight. The low molecular weight help them spread and diffuse everywhere

hope it helped

What do you already know about the Moon?

Answers

Answer:

the moon is

Explanation:

round

In space

a greyish color

has indentations

dry

low gravity

Explain in your own words the difference between a leading strand and a lagging strand.

Answers

Answer:

So basically the primary distinction between the leading and lagging strands is that the leading strand is the DNA strand that develops continuously during DNA replication, whereas the lagging strand is the DNA strand that grows in small pieces known as Okazaki fragments. A leading strand is one that is produced in the 5'-3' direction, whereas a lagging strand is one that is formed in the 3'-5' direction. The leading strand is constantly produced where the other is not.

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how many elements are in CH4how many elements are in CH4 ​

Answers

Answer:

Two.

Explanation:

Carbon and Hydrogen.

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