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
gavmur [86]
3 years ago
9

Which system protects to the cardiovascular system?

Biology
1 answer:
Anastaziya [24]3 years ago
5 0

Answer:

A

Explanation:

Your ribs are apart of skeletal system and your ribs protect you lungs

You might be interested in
How could the botanist best determine whether the genotype of the green-pod plant is homozygous or heterozygous?
murzikaleks [220]

Answer:

C

Explanation:

Homozygosity is when the two alleles (gene form) are the same while heterozygosity is when the alleles are of different types.

In a gene, an allele is capable of masking the expression of another. The allele being expressed or that masks is called the DOMINANT allele while the allele being masked is the RECESSIVE allele.

A recessive allele will only be expressed (phenotypically) if the two alleles are of the same type i.e. homologous but when a dominant phenotype is expressed, one cannot ascertain whether the organism is heterozygous or homozygous for that gene. e.g T is the gene coding for height in plant, T which represents tallness is dominant over t, representing shortness. In a heterozygous (Tt) and homozygous dominant (TT) state, the plant will be phenotypically tall but will only be short in a homozygous recessive (tt) state.

Since the plant will be tall in homozygous (TT) or heterozygous (Tt), we cannot detect the actual genotype of the plant. Hence, a test cross is done.

A test cross is a cross between a dominant phenotype and a homozygous recessive in order to determine the actual genotype of the dominant organism i.e. whether homozygous or heterozygous.

In this case involving pod color gene, since the botanist is trying to determine whether the genotype of the green pod plant is heterozygous or homozygous, it means the allele for green pod is dominant over that of yellow pod (recessive).

N.B: The recessive trait can only be expressed if it is homozygous. Therefore, the yellow pod plant has homozygous recessive genotype.

A test cross is conducted by the botanist to determine whether the green pod plant is heterozygous or homozygous by crossing it with a yellow pod plant (homozygous recessive).

If any of the offspring plants exhibit recessive traits i.e. yellow pods, it means the parent green pod plant is heterozygous but if all the offspring plants show phenotypic dominant traits i.e green pod, it means the parent green pod plant is homozygous.

8 0
3 years ago
What is the different Chief of the PNP and chief of the Police​
aleksandrvk [35]

Answer:

The Chief of the Philippine National Police (C, PNP) (Filipino: Hepe ng Pambansang Pulisya ng Pilipinas[2]) is the head of the Philippines' national police body, the Philippine National Police (PNP). The position is invariably held by a Police General, a four star general police officer.

The PNP chief is also an ex officio member of the National Police Commission as a commissioner

Explanation:

5 0
2 years ago
HELPPPP MEEEEE PLZZZZ
madam [21]

Answer:

There are three main measures of central tendency: the mode, the median and the mean. Each of these measures describes a different indication of the typical or central value in the distribution.

7 0
3 years ago
Musculo que tiene las características tanto de musculo esquelético como de musculo liso. Se encuentra en el corazón y sus contra
Andrei [34K]

Answer:

músculo cardíaco

Explanation:

Los 3 tipos de tejido muscular son 1-músculo cardíaco o miocardio (involuntario), 2-músculo liso (involuntario) y 3-músculo esquelético (voluntario). Las células del músculo cardíaco, las cuales son conocidas como 'miocardiocitos', poseen una apariencia estriada y forman la pared del corazón. Los miocardiocitos son alargados, ramificados, y poseen un núcleo central (son células uninucleadas, a diferencia de las células del músculo esquelético, las cuales son multinucleadas). Además, los micardicitos son más cortos (80 a 100 µm) y más anchos (aprox. 15 µm) que las células del músculo esquelético. Los miocardiocitos presentan uniones especializadas conocidas como discos intercalares, los cuales son un tipo de complejo de unión entre los límites de dos cardiomiocitos. En el citoplasma de los cardiomiocitos se encuentran las miofibrillas, las cuales son estructuras contráctililes que les confieren a las células musculares sus propiedades características de contracción y de elasticidad. En estas células (cardiomiocitos) las miofibrillas se disponen de manera longitudininal con un patrón estriado.

7 0
3 years ago
What will the average beak depth for finches be after 2 years of average rainfall followed by 3 years of 2 inches of rainfall?
kotykmax [81]

Answer:

b

Explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • How many parts does the scientific name of an organism have? 1 2 3 4
    6·2 answers
  • A(n) _____is the basic unit of matter.
    7·1 answer
  • You performed a blood typing activity as described in the lab manual. you observed agglutination (clumping) with anti-b and anti
    11·1 answer
  • Explain the difference between a hypothesis and a theory.
    6·2 answers
  • A portion of one DNA strand of the human gene responsible for cystic fibrosis is 5' ......ATAGCAGAGCACCATTCTG.....3' Write the s
    7·1 answer
  • Through the process of transformation, bacteria cells can take up plasmids that contain recombinant DNA
    15·1 answer
  • Mengapakah Kita menyedut Dan menghembus gas nitrogen dalam jumlah Yang sama​
    10·1 answer
  • The united nations defines a megacity as having at least how many inhabitants?.
    6·1 answer
  • Which is the best explanation for how earthquakes cause tsunamis?.
    14·2 answers
  • a scientist conducted an expirement to determine the effect of the enviroment on the color of fur of a himalayan rabit
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!