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Stolb23 [73]
3 years ago
14

Cleo has a vegetable garden and wants to increase the amount of nitrogen in the soil.

Biology
2 answers:
Helen [10]3 years ago
7 0

Answer: A

Explanation:

UNO [17]3 years ago
5 0

Answer: Hello! The answer is A! Just vouching the other guy. They are correct! Have a good day!

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Trace the path of food through the digestive system. at each organ:
Lyrx [107]

Ingestion

Mouth- chews and mixed food with saliva

Pharynx- Directs food from mouth to esophagus

Salivary glands- secrete saliva

Epiglottis - Protects airways during swallowing

Trachea- let the air to pass to and from lungs

Esophagus-  Pass through the  food from the mouth then to the stomach

Esophageal sphincters- let the pass way from mouth to esophagus and from esophagus to stomach, to avoid back flow from stomach to esophagus and from esophagus to mouth.

Diaphram- Segregate the abdomen from the thoracic activity

Stomach- grinds food to a liquid mass churns, mixes, and; adds acid, enzymes, and fluid

pyloric sphincter: Allows passage from stomach to small intestine; prevents back flow from small intestine

Liver- detergent-like substances, to help digest fats and Manufactures bile salts,

Gallbladder- stock bile until needed

Bile Duct- Conducts bile from the gallbladder to the small intestine

Appendix- House bacteria and lymph cells

Small intestine- Secretes enzymes that digest all energy- yielding nutrients to smaller nutrient particles; cells of wall absorb nutrients into blood and lymph

llececal valve (sphincter) – is the  pass way  from small to large intestine; to avoid back flow from large intestine

Pancreas- produced enzymes to digest all energy- yielding nutrients and releases bicarbonate to neutralize acid chyme that enters the small intestine

Pancreatic duct- secretes pancreatic juice from the pancreas to the small intestine

Large intestine- passes waste along with water to rectum and  Absorbs water and minerals;

Rectum – Stocks  water prior to elimination

anus-  opens to allow elimination, holds rectum closed.

7 0
3 years ago
Why are mitochondria bigger in animal cells
Greeley [361]
When you think about the main purpose of mitochondira (to produce energy; an easy idea how to remember the function of mitochondria in our bodies is to imagine them as energy factories or power plants) it becomes easy to understand why.

Animals (including us) move a lot more compared to plants. For movement you need energy and energy needs to be produced in our bodies in order for us to be able to move. Therefore, we have mitochondria that are bigger. Not only that, animal cells usually also have more mitochondria. All of this is probably done to keep up with the increased energy demands that moving organisms have. 
5 0
3 years ago
Surfactant helps to prevent the alveoli from collapsing by
Y_Kistochka [10]

Answer:

The correct answer will be- by lowering the surface tension at air/liquid transition.

Explanation:

Pulmonary surfactant is the mixture of proteins and lipids produced by the type II epithelial cells.  

The surfactant is selected into the alveolar sacs where the surfactant reduces the surface tension of the air/liquid interface to 1 mN/m. The lipid content of the surfactant called dipalmitoylphosphatidylcholine or DPPC forms a surface film which lowers the surface tension.

This power surface tension reduces the work of breathing and thus prevent the alveolar sac from rupture or collapse.

Thus, by lowering the surface tension at air/liquid transition is the correct answer.

7 0
3 years ago
What factor of phylogenies enable us to determine that all terrestrial mammals are quadrupedal (walk on all four legs) except hu
ankoles [38]

<u>Answer:</u>

Common ancestor is the main factor that determines that all terrestrial animals are quadrupedal.

<u>Explanation:</u>

  • Phylogeny means the evolution of the organisms or genetically related organism and how they are related.
  • The study of phylogeny is called as phylogenetics. Terrestrial means those who live on land.
  • Mammals are one who gives birth to their offspring directly. They are generally warm-blooded, breath air.
  • Studying each state of the ancestor and also tracing the organism characteristics during evolution.
5 0
3 years ago
A cross between two individuals that are heterozygous for eye and skin color would be an example of a _____ cross.
8090 [49]

A cross between individuals that are heter0zyg0us for two different traits is a dihybrid cross. <em>A cross between two individuals that are heterozygous for eye and skin color would be an example of a _</em>dihybrid<em>_ cross.</em>

----------------------

Dihybrid crosses involve individuals that expresses two different traits and are heter0zyg0us for each of them.

So let us imagine we are studing the characters eye color and skin color. Let us assume that both of them are coded by single diallelic genes.

For eye color there is

  • Dominant allele B that codes for brown eyes
  • Recessive allele b that codes for blue eyes

For skin color there is

  • Dominant allele A that codes for black skin
  • Recessive allele a that codes for white skin

So, an individual that is heter0zyg0us for both of them, is BbAa.

If this person crosses to another person with the same genotype, we are talking about a <u>dihybrid cross</u>, because two dibybrid individuals are involved.

                             Cross:    BbAa      x      BbAa

According to this information, we can aswer the question:

<em>When crossing two individuals that are heterozygous for eye and skin color we are referring to a</em><em> dihybrid cross.</em>

-----------------------------------

Learn more about dihybrid crosses at

brainly.com/question/1185199?referrer=searchResults

brainly.com/question/24076691?referrer=searchResults

6 0
2 years ago
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