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3 years ago

Much like a cell, a virus is able to

Biology

1 answer:

Illusion [34]3 years ago

4 0

Much like a cell, a virus is able to grow and reproduce in large numbers

A virus is a microscopic nonliving parasite that only reproduces inside the cells of living hosts. Like cells, viruses have the ability to grow and reproduce within the host cell. When a virus infects a host cell, it injects its genetic material into the cell and forces the host cell to produce thousands of similar copies of the original virus.

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Human blood types are characterized by the presence absence of surface markers known as a tigers on the surface of red blood cel

zalisa [80]

Answer:

characterized by presence or absence of antigens

the blood types are A, B, O, AB

Explanation:

There are two antigens and two antibodies that are mostly responsible for the ABO types. The specific combination of these four components determines an individual's type in most cases. Erythrocytes and serum were related to the presence of antigens on these erythrocytes and antibodies in the serum. these antigens are A and B, and depending upon which antigen the erythrocytes express, blood either belonged to blood group A or blood group B. A third blood group contained erythrocytes that reacted as if they lacked the properties of A and B, and this group was later called "O" blood group. The fourth blood group AB, was added to the ABO blood group system. These erythrocytes expressed both A and B antigens.

Blood group Antigen present on RBC Antibodies in serum Genotype(s)

A antigen A anti-B AA or AO

B antigen B anti-A BB or BO

AB both A and B antigen none AB

O none anti-A and anti-B OO

4 0

3 years ago

Q 16.1: The cerebral cortex is required for A : subconscious detection of environmental changes B : conscious interpretation of

dedylja [7]

Answer:

Conscious interpretation of sensations.

Explanation:

Cerebral cortex consists of the outer layer of the cerebrum present in the brain of the humans. Longitudinal fissure divides the cerebral cortex into the right and left cerebral hemisphere.

The cerebral cortex is involved in the senses information. The conscious interpretation of the sensation is required in the cerebral cortex and contains large number of sensory innervation.

Thus, the correct answer is option (B).

6 0

3 years ago

Which type of mutation occurs only in reproductive cells

dimaraw [331]

Answer:

Germ line Mutation

Explanation:

4 0

3 years ago

What elements are found in the human body? Give 3 examples (don’t give them complicated)

Vedmedyk [2.9K]

Answer:

hydrogen, oxygen, carbon and nitrogen

I did 4 instead :')

Explanation:

6 0

3 years ago

Comparing DNA Replication and Transcription

ozzi

The missing information has been completed as:

DNA Tempelate complementary DNA mRNA

3' TTACG 5' 5' AATGC 3' 5'UUACG 3'

3' AAUGC 5' 5' TTACG 3' 5'UUACG 3'

3' GGCGG 5' 5' CCGCC3' 5' CCGCC3'

' 3'TGCATCG5' 5' ACGTAGC 3' 5' ACGUAGC 3'

3' AGACTC 5' 5' TCTGAG 3' 5' AGACTC 3'

3'GATAAGA 5' 5' CTATTCT 5' 5' CTAUUCA 3'

3' CTGGCTAC5' 5' GACCGATG 3' 3'CUGGCUAC 5'

Explanation:

Some of the sequence of DNA given is in 3' to 5' direction, mRNA sequence is also given.

The DNA is double stranded helix which replicates by semi conservative mode. The two strands unwind to act as a template for other strands. In transcription the 3' to 5' strand acts as a template because RNA synthesis takes place in 5' to 3' direction. mRNA is single strand. It has nucleotides in it from which 3 base pairs acts as a code for amino acid.

The following table shows DNA strand having complementary sequaence and mRNA synthesized.

DNA Tempelate complementary DNA mRNA

3' TTACG 5' 5' AATGC 3' 5'UUACG 3'

3' AAUGC 5' 5' TTACG 3' 5'UUACG 3'

3' GGCGG 5' 5' CCGCC3' 5' CCGCC3'

' 3'TGCATCG5' 5' ACGTAGC 3' 5' ACGUAGC 3'

3' AGACTC 5' 5' TCTGAG 3' 5' AGACTC 3'

3'GATAAGA 5' 5' CTATTCT 5' 5' CTAUUCA 3'

3' CTGGCTAC5' 5' GACCGATG 3' 3'CUGGCUAC 5'

3 0

3 years ago