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
anzhelika [568]
3 years ago
5

What is the body's first line of defense against disease?

Biology
1 answer:
KATRIN_1 [288]3 years ago
7 0

Answer:

The first line of defence (or outside defence system) includes physical and chemical barriers that are always ready and prepared to defend the body from infection. These include your skin, tears, mucus, cilia, stomach acid, urine flow, 'friendly' bacteria and white blood cells called neutrophils.

Explanation:

You might be interested in
HELPPP!!! ASAPPPP!!!!
Anni [7]
Vertebrates do not have an exoskeleton they have backbones
6 0
3 years ago
Provide an example of how cells balance the redox potential between different cellular components?
crimeas [40]

En la respiración celular, la célula depende totalmente de las reacciones Redox, para ser precisos de la reducción del NAD a NADH y la oxidación de NADH a NAD.

Ahora veamos una situación diferente.

En la fotosíntesis, ocurre la reacción inversa de redox, como se muestra en la siguiente ecuación:

6CO2 + 6H2O + E --> C6H12O6 + 6O2

La energía biológica se almacena y se lanza con la frecuencia por medio de reacciones redox. La fotosíntesis implica la reducción del CO2 en azucares y la oxidación del H2O en oxigeno molecular (O2), mientras que en la respiración es lo inverso, la oxidación de azucares a CO2 y H2O.

Entre los pasos redox de la fotosíntesis, compuestos deducidos del CO2 reducen el NAD lo que crea entonces, la creación gradiente de protones, que conduce a la síntesis del ATP y es mantenida por la oxidación del O2.

En los seres vivos, el término redox se utiliza para describir el equilibrio NAD-NADH y NADP-NADPH.

El estado redox contribuye al equilibrio de los sistemas metabólicos. En el caso de alteraciones en las reacciones redox, puede producirse HIPOXIA, que es el déficit del O2 en la sangre, CHOQUE, que es el mal circulamiento de lal sangre y la SEPSIS.

7 0
3 years ago
20) In order for high force cross bridges to form in contracting skeletal muscle, calcium must A) phosphorylate the troponin to
SashulF [63]

Answer:

E. bind to troponin which moves the tropomyosin

Explanation:

calcium ions bind to troponin, causing conformational changes in troponin that allow tropomyosin to move away from the myosin binding sites on actin. Once the tropomyosin is removed, a cross-bridge can form between actin and myosin, triggering contraction

3 0
3 years ago
Which of the following is not true of exothermic reactions?
andriy [413]
<h2>Answer:</h2>

Option B is correct.

B. In an exothermic reaction, excess energy is released as heat.

<h2>Explanation:</h2>

An exothermic reaction is a chemical reaction that releases energy by light or heat. It is the opposite of an endothermic reaction. Expressed in a chemical equation: reactants → products + energy. Exothermic Reaction means "exo" meaning releases and "thermic" means heat.



5 0
3 years ago
NEED ANSWER
jolli1 [7]

Tay-Sachs disease is caused by mutations in the HEXA gene and inheritance is autosomal recessive . The HEXA gene gives the body instructions to make part of the beta-hexosaminidase A enzyme, which is needed to break down a substance called GM2 ganglioside.

i hope this helped! please mark me as brainliest and 5 stars >:)

7 0
3 years ago
Read 2 more answers
Other questions:
  • When a muscle cell receives a signal from a motor neuron, are all the sarcomeres activated or only some?
    7·1 answer
  • If you ever have swelling in your extremities, the way that fluid gets back out into the blood stream is by the circulatory syst
    11·1 answer
  • Which of the following is the earliest era of Earth's geologic time scale? Cenozoic
    13·1 answer
  • Which sentence best captures a central idea of the biography
    11·1 answer
  • The parts of the neuron​
    5·1 answer
  • Scientists have genetically engineered crops such as corn, cotton, and soybeans. Which of the following statements about genetic
    11·2 answers
  • Drag the appropriate tRNAs to the binding sites on the ribosome to show the configuration immediately before a new peptide bond
    11·1 answer
  • A. what role does mrna play in the flow of information in the cell? (hint: remember the central dogma of molecular biology.) ple
    10·1 answer
  • PLEASE HELP BIOLOGY!!!! (15 POINTS!)
    8·1 answer
  • Paleontologists find a fossil ape with long arms. What type of environment can they infer it inhabited?.
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!