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morpeh [17]
2 years ago
12

please help me with this does anyone know any of these please give helpful answers I need help with hw Please I'm in a hurry!!!!

!!!

Biology
1 answer:
Phoenix [80]2 years ago
3 0
Number 1: The Circulatory System is a vast network that contains organs and vessels.

number 2: Arteries have a thick wall which helps a powerful pressure from the heart.

number 3: Without the Circulatory System the body wouldn't be unable to maintain a internal environment.

number 4: The Circulatory and Respiratory system both have gas to help a or animal live in there internal environment.

number 5: Blood vessels brings oxygen to the tissues and absorbs carbon dioxide and other waste products to clear the lungs. And with out oxygen the tissues won't absorb carbon dioxide to clear out the lungs.

number 6: D
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Apoptosis involves all but which of the following?
LenaWriter [7]

Answer:

Apoptosis does not involve:

c. lysis of the cell

Explanation:

Apoptosis is a programmed cell death that occurs under normal physiological conditions and in a controlled manner. Normally seen in cell turnover, embryogenesis, also involved in processes of immune, nervous and endocrine systems.

The main morphological and biochemical changes seen during the apoptosis are the fragmentation of DNA by endonucleases, nuclear, chromatin and cytoplasmatic condensation, apoptotic bodies formation (membrane bound-vesicles form of cell parts) and the phagocytosis (digestion) of those bodies by the scavenger cells.

Apoptosis is regulated by cell- signaling pathways, the caspases, a family of cysteine proteases, are the ones involved in the process.

In the process there is no lysis of the cell as this could lead to a inflammatory response (just happens in necrosis) which would affect contiguous cells, and will involve immune cells. In apoptosis there is just a membrane blebbing, but it does not loss its integrity.

4 0
2 years ago
T is tall while t is short. Choose all the genotype(s) for tall individuals.
Furkat [3]

Answer:

Option (A), (C) and (D).

Explanation:

The concept of law of dominance was explained by Mendel while working on the pea plant <em>Pisum sativum. </em>According to this law, the trait which is able to express itself even in hetrozygous condition, the trait is called dominant trait. The trait that are unable to express itself, the trait is called recessive trait.

Here, T means tall and t is short. T shows the dominant trait whereas t is recessive trait. T trait can express itself in heterozygous condition as well. So, TT, Tt and TTTT shows the tall individuals and tt is short individual.

Thus, the correct answer is option (A), (C) and (D).

5 0
2 years ago
Please help me with this question please
zepelin [54]

4) b removing more co2 from the atmosphere

5) a more sea ice melting

6) tolerate c

7) stained teeth b

8) polar bear will consume less seal meat

9) past and more current research (not sure)

7 0
2 years ago
Why is it a good thing that cardiac muscle is striated unlike smooth muscle?
Mice21 [21]
Skeletal and cardiac muscles are known as striated muscles, because the filaments of actin and myosin that power their contraction are organized into repeating arrays, called sarcomeres, that have a striated microscopic appearance.
5 0
2 years ago
How do viruses replicate their genome viral dna to complementary dna?
denis-greek [22]

Answer:

Reverse transcriptase, a viral enzyme that comes from the virus itself, converts the viral RNA into a complementary strand of DNA, which is copied to produce a double stranded molecule of viral DNA. This viral DNA is then transcribed and translated by the host cell's machinery, directing the formation of new virions

Explanation:

3 0
3 years ago
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