Biology High School

Fiddler crabs are invertebrates. That means they do not have a backbone (that's made out of vertebrae). Does this mean they don't have a skeleton?

Answers

Answer 1

Answer:

No, this is not true.

Explanation:

Fiddler crabs have exoskeletons, meaning their skeletons are found on the outside of their body rather than the inside.

Related Questions

TOR kinases are enzymatic proteins found in a diversity of species, from yeasts to mammals. They serve in a phosphorylation cascade that promotes progression through the cell cycle. What evidence would confirm that eukaryotes share a common ancestor with regards to cell signaling pathways?

Answers

Answer:

By phylogenetic analyses

Explanation:

The target of rapamycin (TOR) is a major regulator of growth only found in eukaryotic organisms. The TOR pathway is known to regulate critical cellular processes including, among others, cell growth. The TOR protein is a kinase capable of activating translation by phosphorylation of the ribosomal S6 kinase (S6K) and the eukaryotic translation initiation factor 4E binding protein (4E-BP). In this regard, phylogenetic studies have shown that this pathway involves duplication events of ancestral kinases, as well as sub-functionalization of the S6K kinase.

In a water molecule, the electronegativity of the oxygen atom is high where the
hydrogen is low.
Draw the directionality of the pull between the hydrogen and oxygen atoms.
O

Answers

Answer:

drawing

Explanation:

Draw:

Draw 2 water molecules, H2O. connect the Hydrogen to the Oxygen.

Using radio telescopes, astronomers have found evidence
that no new matter is forming in the universe, which is
what the big bang theory predicted.
This work is part of which process used in developing scientific theories?
A. Using new technology to provide additional supporting data
B. Using imagination to spark new ideas
C. Using new technology to replace outdated theories with new ideas
O D. Using new data to modify an existing scientific theory

Answers

Answer:

Explanation:

Scientific theories are explanations of natural phenomena that have been repeatedly examined and verified using the scientific process of observation, measurement, and analysis. Therefore, option (A) is correct.

What is scientific theory?

A scientific theory is an explanation of an aspect of the natural world and the universe that has been repeatedly tested and corroborated in accordance with the scientific method, using accepted protocols of observation, measurement, and evaluation of the results. In other words, a scientific theory is an explanation of something that has been proven to be true through the scientific method.

Einstein's Special Relativity, which describes the relationship between space and time for objects moving at a consistent speed in a straight line, is one of the most well-known scientific ideas. It also happens to be one of the most controversial. Additionally, the concept of time dilation is investigated by this theory.

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The human genome is a diploid genome. However, when germ-line cells produce gametes, these specialized cells are haploid. What is the total number of chromosomes found in each of the gametes (egg or sperm) in your body

Answers

Answer:

23 chromosomes

Explanation:

The total number of chromosomes found in each of the gametes in the body of humans is 23.

The human genome is diploid (2n) with 46 chromosomes. The sex cells divide by meiosis - a reductional division that results in the halving of the chromosome number - during the formation of gametes. Hence, the gametes are haploid (n) with half the number of chromosomes (23) of the vegetative cells of the body.

Therefore, the eggs in females and the sperms in males each contain haploid (n=23) number of chromosomes.

The cell theory has three main components. Which three scientists’ conclusions formed these components? A)Hooke, Schwann, and Virchow B)Hooke, Leeuwenhoek, and Schleiden C)Leeuwenhoek, Schleiden, and Schwann D)Schleiden, Schwann, and Virchow

Answers

Answer:

Hooke, Leeuwenhoek, and Schleiden.

Answer:

I believe the answer is D: Schleiden, Schwann, and Virchow

The answer is NOT B: Hooke, Leeuwenhoek, and Schleiden

Explanation:

I took the quiz and got B wrong.

Of the following, which are examples of a protein?
enzyme
chitin
steak
RNA
kidney
bread
honey
body fat
DNA
glucose
peanut butter
lard
olive oil
cholesterol
hormone

Answers

Enzyme
Steak
RNA
DNAs
Body fat
Hormones
Olive oil
Lard
Honey
Peanut butter

1.
Mention any four importance of electricity in the present days?

Answers

Answer:

lighting, heating, cooling, devices

Explanation:

you have to have electricity for the following or you would not be able to change you phone

It is used for lighting rooms, working fans and domestic appliances like using electric stoves, A/C and more. All these provide comfort to people. In factories, large machines are worked with the help of electricity. Essential items like food, cloth, paper and many other things are the product of electricity.

The human stomach secretes an enzyme known as pepsin. This enzyme breaks down proteins into smaller chemical molecules called peptides. If pepsin was mixed in a laboratory with sugar molecules like glucose, what is the MOST LIKELY result?
Question 13 options:

Pepsin will break down glucose molecules into simpler substances.

Pepsin will react with glucose only if the necessary RNA molecules are present.

Pepsin will probably NOT react with the sugar glucose since it is an enzyme that breaks down proteins.

Pepsin will probably NOT react with glucose since the activity of enzymes is limited to the human body.

Answers

Answer:

3rd

Explanation:

pepsin cannot possibly catalyze a reaction for a molecule it has not been shaped to do for.

explain why a large tree and a crop such as rice or maiz are both classified as plant

Answers

Answer:

because the all need sun, and oxygen, water to grow. I really don't know how to answer so I hope the answer above help sorry if it doesn't

Explanation:

Answer:

they both produce their own food

Explanation:

photosynthesis is a large part of their life

Which element is found in nucleic acids but not in amino acids

Answers

Answer:

Phosphorus

Explanation:

Answer:

Phosphorus

Explanation:

I took the quiz

Science question !!!

Answers

Answer:

A. a decrease in air pollution

Explanation:

Because solar panels do not create any pollutants therefore it is A. a decrease in air pollution

Please help me with 8th grade science

Answers

Answer:

the last one

Explanation:

molecule is defined as two or more atoms of the same element different element that are bound together. A molecule may be homonuclear, which means, it consists of atoms of one chemical element, as with oxygen (O2); or it may be heteronuclear, a chemical compound composed of more than one element, as with water (H2O).

The term used to define a cell that has a nucleus containing DNA.
a) Autotroph
b)Prokaryote
c) Eukaryote
d) Homeostasis

Answers

Answer:

The answer would be C eukaryote the cell that has a nucleus containing DNA I can't show a picture of it but I can tell you for sure that is that answer

what do foxes sleep on? A.beds B.fox nest C.trampling

Answers

Answer: B. Fox nests

Explanation:

Foxes dig out dens to provide a safe underground space that is mostly used for raising fox cubs, also called kits. In urban areas, the dens - known as earths - are commonly located under sheds, but they can also be among tree roots, in bushes or on railway embankments.

Which was Charles Darwin's contribution to the study of biology?
O He was the first person to recognize that organisms change over time.
O He believed that organisms adapted through the inheritance of acquired traits.
He explained how traits are passed from parents to offspring.
O He proposed that natural selection is the primary mechanism of evolution.

Answers

Answer:

He proposed that natural selection is the primary mechanism of evolution.

Explanation:

Compare ionic solids and liquids

Answers

at room temperature and normal atmospheric pressure, covalent compounds may exist as a solid, a liquid, or a gas, whereas ionic compounds exist only as solids. ionic compounds exist in stable crystalline structures. therefore, they have higher melting and boiling points compared to covalent compounds.

Where as ionic Compounds exist in a stable Crystalline structures therefore they have higher melting and boiling points compared to COVALENT Compounds

All enzymes are examples of organic molecules known as?

Answers

Answer:

PROTEINS

Explanation:

Many important molecules in the hman body are proteins like enzymes, antibodies, e.t.c.

Enzymes are a type of protein that speed up chemical reactions.

All enzymes are examples of organic molecules known as proteins.

Proteins are large biomolecules composed of one or more chains of amino acids that perform a wide range of functions in living organisms. Proteins are essential structural and functional components of cells, tissues, and organs.

Enzymes are biological catalysts that are produced by living cells. They are typically composed of one or more proteins, which are long chains of amino acids that are folded into complex three-dimensional shapes. Enzymes play a critical role in many biological processes, including digestion, metabolism, and DNA replication. \They work by lowering the activation energy required for a given chemical reaction to occur, which allows the reaction to proceed more quickly and efficiently.

Therefore, enzymes are proteins, they are considered to be organic molecules.

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Which statement best explains a way in which a cell gets rid of wastes?
A. The nucleus provides the instructions for making proteins from
amino acids.
B. A chloroplast converts energy from sunlight into organic matter.
C. Mitochondria change energy stored in organic compounds into a
usable form.
D. Vacuoles merge with the cell membrane and then open.

Answers

Answer

D. Vacuoles merge with the cell membrane and then open.

Explanation:

Answer:

Explanation:

I took the ∆pex quiz

Somatic cells (also called body cells) are found where? Check all that apply.
A heart
B lungs
C sperm
D muscles
E eggs

Answers

Answer:
Heart , lungs , and muscles

Hope you have a great day

Which category is the dependent variable?

Answers

Answer:

the answer is no.2.

Explanation:

i am not sure about it

2 is the constant variable because it's always the same the dependent variable is 0 because it depends on the vitamin c

As latitude increases,___.
temperature increases
O temperature decreases
biomes increase in size
biomes decrease in size

Answers

Answer:

As latitude increases the temperature decreases

what is photosynthesis

Answers

Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that can later be released to fuel the organisms' activities.

Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that can later be released to fuel the organisms' activities. This chemical energy is stored in carbohydrate molecules, such as sugars, which are synthesized from carbon dioxide and water –

7. Mrs. Everhart developed the theory that all bulldogs are great pets. After all her bulldog Meatball is a
wonderful dog! Is this statement a scientific theory? Why or why not.
finoccientific method

Answers

Answer:

No it is not a scientific theory.

Explanation:

An explanation of any aspect of the natural phenomenon of the world that can be tested several times and well supported by the evidence, and follows the scientific method. Furthermore known as scientific theory.

Presently, a logical hypothesis must meet a few rules, and one of those is that it must be upheld by a few (and free) strands of proof.

For this situation, we have just one hypothesis, that bulldogs are great pet and Meatball is great among bulldogs, and it isn't sufficient, at that point it can not be a scientific theory.

what has a greater impact on humans earth's ocean of earth's freshwater

Answers

Answer: earths ocean has more impact.

explanation:

the ocean provides a larger amount of oxygen than all the plants on earth including the amazon rainforest. freshwater isn’t as important because it doesn’t produce that much oxygen and the ocean provides more minerals and food.

How can you explain how genetic similarities are due to common ancestry? Where do we get our DNA from?

Answers

Answer:

Actually our genetic code is unrepeatable, the union of the female x chromosomes of our mother and chromosomes and of our father, generate a diploid cell with a UNIQUE cellular genetic code.

What shows our descent from the same ancestor is mitochondrial DNA, this DNA is the same and is repeated throughout the human race.

Explanation:

Mitochondrial DNA is circular and is found in our organelle called mitochondria, responsible for cellular respiration and formation of the energy currency ATP-

Explain the differences between acids and bases. Provide examples.

Answers

Answer:

An acid increases the concentration of H+ ions. A base is a substance that releases hydroxide (OH-) ions in aqueous solution, donates electrons and accepts protons.

Acid:Lemons, oranges, vinegar

Base:Soap, toothpaste, bleach, cleaning agents, limewater,

Explanation:

is auxin one of the most important group of plant hormones

Answers

Answer:

yes they are

Explanation:

because auxin are the most important hormones involved in adventitious root formation.

Answer:

Yes!

Explanation:

Auxin is one of the MOST important group of plant hormones! They promote the growth that is needed for plants. They produce the stems and the buds, and the tips of the roots for the plants. Without it, things would go bad, and a lot of things would go awry.

I really hope I helped you with this question!

Choose all of the physical changes:

(There are FOUR)

Group of answer choices

tarnish

evaporate

bend

react

melt

explode

dissolve

Answers

Answer:

evaporate, bend, melt, dissolve

Explanation:

What type of molecules will create a solution when mixed with water?

Answers

Answer:

If you start to stir the liquid, the mixing process happens much faster. 2. The molecules of the solvent begin to move out of the way and they make room for the molecules of the solute. Example: The water has to make room for the sugar molecules to spread out.

Explanation:

A community that has progressed so much that it is stable and balanced

Answers

i believe it’s called a climax community! hope this helped :)

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