Why don't whales have saliva?
______
Kinda curious to know! :3​

Answers

Answer 1

The seawater dilute the saliva in them, so the necessary digestive enzymes they can't use.

Answer 2
This elasticity helps cetaceans to renew 90% of the air in their lungs in a single breath. The gene SLC4A9 is partly responsible for the production of saliva in terrestrial mammals, but your average dolphin or whale has little need of spittle which is why it has been lost in cetaceans.

Related Questions

When new molecules are introduced to one isolated area of a solution, there will temporarily be a high concentration of those molecules in one area of the solution. What is the name for the spontaneous process of dispersing these molecules to create a uniform concentration throughout the solution?
1. osmosis
2. transport
3. filtration
4. diffusion

Answers

Answer:

4.Diffusion

Explanation:

Diffusion if the movement of particles from a region of high concentration (where there is many) to a region of low concentration (where there is less) until it is evenly distributed.

According to the graph, which region's population is expected to get smaller
between 2010 and 2050?

Answers

Answer:

Europe

Explanation:

it's the only line that slopes downward between 2010 and 2050

Which structure does a virus have in common with a prokaryotic cell?
cell wall
O nucleic acid
ribosome
capsid

Answers

Answer:

Explanation:

cell-wall

the answer is capsid


Ninety-nine percent of the oxygen reaching cells can be best
represented by

Answers

Answer:

Hbo2

Explanation:

Ninety-nine percent of the oxygen reaching cells can be best represented as oxyhemoglobin

Two nucleotide sequences found in two different species are almost exactly the same. What does this suggest about these two species?

A.They contain exactly identical DNA
B.They may have common ancestor
C.They are evolving into same species
D.They have the same number of mutations

Answers

Answer:

B.They may have common ancestor

B! Hope this helps you!


Identify the steps of the lytic cycle.
The pieces made in replication are
assembled to complete the new virus
particles
The new viral nucleic acid and viral
proteins are replicated
The virus attaches to the host cell.
The original virus releases a protein that
causes the cell wall to burst (lysis), killing
the cell and releasing viruses.
The host's DNA is disassembled and the
virus takes over the cell's metabolic
activity

Answers

All the given steps are of lytic cycle.

Lytic cycle is used by a bacteriophage to reproduce inside a bacteria.Bacteriophage are the viruses.

What is lytic cycle?

The lytic cycle is production of new phage progeny and death of the host bacterial cell, this is a multistep process involving precise coordination of gene transcription and physical processes.

The six stages are:

Attachment.Penetration. Transcription. Biosynthesis. Maturation. Lysis.

To know more about lytic cycle here

https://brainly.com/question/13762063

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Answer: c b e d a

Explanation:

El vapor se puede transportar a través de la atmosfera. A medida que el vapor se enfría , el agua se condensa en gotitas y forman y forman nubes y da como resultado

Answers

Answer:

Precipitación.

Explicación:

El agua se mueve del cuerpo de agua a la atmósfera debido al proceso de evaporación en forma de vapor. A medida que los vapores de agua se enfrían, el agua se condensa en gotitas y forma nubes que resultan en precipitaciones en forma de lluvia y nevadas. Los vapores de agua se vuelven más pesados cuando se condensan y debido a su cuerpo pesado no pueden permanecer en la atmósfera por lo que caen a la tierra en forma de lluvia y nevadas.

Can someone pls tell me if it’s A or D

Answers

Answer:

D................................

Answer:

D

Explanation:

The process of dna replication is called semi conservative because it results in

Answers

Answer:

the process of DNA replication is called semi conservative because it results in two DNAs having a new strand and a old strand which is from the original DNA molecule

which definition goes where idefk I’ll give u brainlist biology teacher driving me nuts omfmsjajhahwahsn

Answers

Primary succession- soil needs to be rebuilt
Secondary succession- soil is still present
Pioneer succession- first species to arrive at an uninhabited environment

Lmk if this helped!

The kidneys are organs that are involved in which process in mammals?
A synthesis
B excretion
C respiration
D transport

Answers

Answer: B

Explanation: The kidneys are part of the urinary system. Urinating is excreting. (God that word is so weird)

3
Which of the following is a phenotype for an apple tree. W no
(1 Point)
АА
Аа
Red apples
аа

Answers

red apples it’s the answer :)

PLEASE HELP ME AS SOON AS POSSIBLE THANKS

Answers

Answer:

a

Explanation:

Answer:

A tiny blood vessel that delivers oxygen to tissues D

Capillaries are very tiny blood vessels — so small that a single red blood cell can barely fit through them.

hope it helps

58. Which of the following Kingdoms contain multicellular organisms? *

Answers

Answer:

The answer is fungi.

Changes in global temperature and other Choose... conditions have effects on organisms and on the clades to which they belong. The emergence, growth, and extinction of a large clade, such as the dinosaurs, is an example of a Choose... pattern. This pattern includes Choose... extinction, which tends not to disturb ecosystems, as well as Choose... extinction, in which ecosystems change drastically.

Answers

Answer:

larger macroevolutionary patterns.

extinction, in which ecosystems change drastically

Explanation:

The emergence, growth, and extinction of a large clade, such as the dinosaurs, is an example of larger macroevolutionary patterns. This larger macroevolutionary patterns occur due to climate change. Extinction of organisms in which ecosystems change drastically that leads to unfavourable environmental conditions which decreases the population to the extinction of organisms.

Refer to the diagram below to answer the question. Which position of the Moon would cause a solar eclipse over a portion of Earth?

Answers

Answer:

Explanation:

The diagram below represents a total solar eclipse as seen from Earth. ... Base your answers to questions 2 through 5 on the diagram below, which shows the. Moon at ... the Sun cause Earth to experience the highest high tides. 3 the diagram below, which shows the positions of the Moon in its orbit and phases of the.

Which statement is false???

Answers

Answer:

b

Explanation:

the correct answer is b

Which best describes why gel electrophoresis works

Answers

Answer:

Scientists can determine the size of DNA fragments through a process known as gel electrophoresis. ... Large DNA molecules move slower and can be observed at the top of the gel, whereas smaller DNA fragments move faster and are seen at the bottom of the gel.

qué ventajas le trajo al ser humano el poder andar en 2 patas.

Answers

Answer:

The advantage that hominids had when they developed bipedalism is truly great. Walking on two legs instead of four allowed hominids to free up their arms. Using their arms they could now make tools, stretch trees, and use their hands for social communication. The development of bipedalism also allowed for long-distance walking and eventually endurance running. Bipedalism, basically, was a key step for hominids' "brains to grow".

[tex]{\sf{\boxed{\boxed{\tt\green{Las \: ventajas}}}}}[/tex]

La gran cantidad de ventajas que trajo el bipedalismo significó que todas las futuras especies de homínidos llevarían este rasgo. El bipedalismo permitió a los homínidos liberar completamente sus brazos, lo que les permitió hacer

English:

The advantages

The host of advantages bipedalism brought meant that all future hominid species would carry this trait. Bipedalism allowed hominids to free their arms completely, enabling them to make and use tools efficiently, stretch for fruit in trees and use their hands for social display and communication.

#CarryOnLearning

Which of the following pairs of animal and plant cells carry out similar functions

A Guards cells and nerve cells

B Guard cells and white blood cells

C Palisade cells and white blood cells

D Root hair cells and red blood cells

Answers

Is d for sure that’s the answer

Answer:

I guess guard cells and white blood cells

Explanation:

Because White blood cells also guards our body from different external agents and guard cells also guard plants.

Hope it helps you:)

. Which of these is a response of cats to external stimuli?
A hairs on the back stand up when scared
B decreased heart rate when sleeping
C movement of waste into the bladder
D temperature increases during an infection

Answers

Answer:

A. hairs on the back stand up when scared

Explanation:

B and C are not responses to stimuli, and D is a response to internal stimuli

Answer:A (don’t mind me just trying to get my points up)

Kingdoms are a more specific (less broad) category in the taxonomic hierarchy.

A. True

B. False

Answers

Answer:

a

Explanation:

According to the taxonomical hierarchy, the kingdom is the highest category in biological classification. It is a group of closely related organisms.  

Kingdom - Phylum -Class - Order -Family - Genus -Species.

Answer:

A. True

Explanation:

Yes, Kingdoms are a more specific (less broad) category in the taxonomic hierarchy.

___ has a definite shape and do not easily take shape of their container

Answers

Answer:

solid has a definite shape and do not easily take shape of their container

the answer is solids

What was the environmental factor MAINLY responsible for the changes which were seen in the graph in Figure 3?

Answers

Answer:

my answer

Explanation:

the sun is rising in noon and at it's very height, carbon-dioxide levels are LOW because the more sunlight plants get, THE MORE PLANTS CONVERT SUNLIGHT WITH CARBON DIOXIDE INTO OXYGEN AND REMOVE CARBON DIOXIDE FROM ATMOSPHERE

Answer:

it seems that there aren't any factors that can really support it but i would say that the percent seems to lower because of the temp change

Explanation:

How does mining impact the enviorment

Answers

Environmental impacts of mining can occur at local, regional, and global scales through direct and indirect mining practices. Impacts can result in erosion, sinkholes, loss of biodiversity, or the contamination of soil, groundwater, and surface water by the chemicals emitted from mining processes.

Answer:

Mine exploration, construction, operation, and maintenance may result in land-use change, and may have associated negative impacts on environments, including deforestation, erosion, contamination and alteration of soil profiles, contamination of local streams and wetlands, and an increase in noise level, dust

The picture below represents which
stage of photosynthesis?
A. Dark reactions
B. Calvin Cycle
C Glycolysis
D Light reactions

Answers

Kinda blurry soooo if you can retake the picture it would help a lot :)

It represents Glycolysis, a key metabolic route that produces energy and generates precursors for the production of primary metabolites in plants. Thus, option (C) is correct.



What is photosynthesis ?

Green plants and certain other organisms convert light energy into chemical energy through a process called photosynthesis. Light energy is gathered and utilised during photosynthesis in green plants to change water, carbon dioxide, and minerals into oxygen- and energy-rich organic molecules.

The first method of breaking down glucose to release free energy is called glycolysis .Two molecules of pyruvate, two molecules of ATP, two molecules of NADH, and two molecules of water are produced during glycolysis.


Hence, the picture depicts the process of gylcolysis , stage of photosynthesis i.e option (c)



Learn more about glycolysis, here:
https://brainly.com/question/14076989



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8. Materials essential for development are transported to a human fetus through the:
A. Fallopian tubes
B. Egg cell
C. Reproductive hormones
D. Placenta

Answers

Answer: D) Placenta

The placenta helps bring nutrients towards the fetus.

DONE
monocot
dicot
Differentiate

Answers

Answer:

Monocots differ from dicots in four distinct structural features: leaves, stems, roots and flowers. ... Whereas monocots have one cotyledon (vein), dicots have two. This small difference at the very start of the plant's life cycle leads each plant to develop vast differences.

hope it helps

What are three real life examples of diffusion and the Cells ? ​

Answers

Answer:

living organisms

Oxygen and carbon dioxide, dissolved in water, are exchanged by diffusion in the lungs:

hope it helps

this part too #stresscrying

Answers

Explanation:

It could be that both the parents were heterozygous, meaning having a dominant and recessive allele for example Aa..after these are paired you would see that they will form a white fur offspring.

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