1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Zolol [24]
3 years ago
14

Why does sound travel faster through a solid object than in the air?

Biology
2 answers:
RUDIKE [14]3 years ago
8 0

Answer:

Sound travels more quickly through solids than through liquids and gases because the molecules of a solid are closer together and, therefore, can transmit the vibrations (energy) faster.

Explanation:

wel3 years ago
7 0

Answer:

Mo-clues

Explanation:

You might be interested in
What is an abiotic factor?
scoundrel [369]
An abiotic factor is a non living thing
7 0
3 years ago
Read 2 more answers
Why do major arteries squirt blood when cut, while veins bleed with a slower steadier rate?
scZoUnD [109]

Answer:

Arteries at at a higher pressure than veins.

Explanation:

Arteries receive blood after the heart beats, putting them at a higher pressure. They are also thicker than veins as well.

5 0
3 years ago
How many chromosomes does a body cell for the organism (egg and sperm) have?
DiKsa [7]
Growth and repair
creation of gametes (sex cells)
method of reproduction in unicellular organisms
Binary Fission - type of reproduction that occurs in bacterial cells, single celled organism splits and becomes two identical organisms

Chromosomes and DNA

Chromosomes are DNA wrapped around proteins to form an X-shaped structure.



The diagram will help you see the relationship.

1. Chromosomes are found in the nucleus
2. Chromosomes are made of DNA
3. Sections of chromosomes are called genes



DNA - deoxyribonucleic acid (it is the genetic code that contains all the information needed to build and maintain an organism)





Chromosome Structure







Chromosome Numbers

Each organism has a distinct number of chromosomes, in humans, every cell contains 46 chromosomes. Other organisms have different numbers, for instance, a dog has 78 chromosomes per cell.

Somatic Cells - body cells, such as muscle, skin, blood ...etc. These cells contain a complete set of chromosomes (46 in humans) and are called DIPLOID.

Sex Cells - also known as gametes. These cells contain half the number of chromosomes as body cells and are called HAPLOID

Chromosomes come in pairs, called Homologous Pairs (or homologs). Imagine homologs as a matching set, but they are not exacly alike, like a pair of shoes.

Diploid cells have 23 homologous pairs = total of 46

Haploid cells have 23 chromosomes (that are not paired) = total of 23

Homologous Chromosomes



Sex Determination

Chromosomes determine the sex of an offspring. In humans, a pair of chromosomes called SEX CHROMOSOMES determine the sex.

If you have XX sex chromosomes - you are female

If you have XY sex chromosomes - you are male

During fertilization, sperm cells will either contain an X or a Y chromosome (in addition to 22 other chromosomes - total of 23). If a sperm containing an X chromosome fertilizes an egg, the offspring will be female. If a sperm cell containing a Y chromosome fertilizes an egg, the offspring will be male.

Creation of a Zygote

When two sex cells, or gametes come together, the resulting fertilized egg is called a ZYGOTE

Zygotes are diploid and have the total 46 chromosomes (in humans)

Karyotype

A karyotype is a picture of a person's (or fetus) chromosomes. A karyotype is often done to determine if the offspring has the correct number of chromosomes. An incorrect number of chromosomes indicates that the child will have a condition, like Down Syndrome

Compare the Karyotypes below













Notice that a person with Down Syndrome has an extra chromosome #21. Instead of a pair, this person has 3 chromosomes - a condition called TRISOMY (tri = three)

Trisomy results when chromosomes fail to separate - NONDISJUNCTION - when sex cells are created. The resulting egg or sperm has 24 instead of the normal 23.

Other conditions result from having the wrong number of chromosomes:

Klinefelters Syndrome - XXY (sex chromosomes)

Edward Syndrome - Trisomy of chromosome #13
4 0
3 years ago
Students use alphabet letters to represent the genetic instruction for a trait of an organism. The students write these alphabet
Gemiola [76]

Answer: b

Explanation: asexual have identical offspring sexual will have different/unique offspring which means they won’t be the exact same.

5 0
3 years ago
Read 2 more answers
Brainliest Are dolphins mammals A. yes B.no C. i dunno
Shalnov [3]

Answer:

A dolphins are mamals because they give live birth.

Explanation:

3 0
3 years ago
Other questions:
  • A chemical formula would indicate what
    13·2 answers
  • Actual germination of a seed occurs when the moisture content is at least 9%. . . True. false
    11·1 answer
  • Why does the scientific establishment sometimes reject new ideas?
    8·2 answers
  • When a liquid changes to a gas the process is called?
    11·2 answers
  • Why might farmers use artificial selection to develop different types of vegetables?
    15·1 answer
  • Serena is mixing a material into a beaker filled with a liquid. She notices that the material seems to disappear into the liquid
    7·1 answer
  • What happens to the water supply when icecaps and glaciers are formed? Water increases. Water decreases Water changes to gas. Wa
    12·1 answer
  • honeybee is considered as the most useful insect for human beings.justify this statement with any three reasons​
    12·1 answer
  • "Character is what you are in the dark."
    5·1 answer
  • Muscle cells serve as a reservoir for which of the following?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!