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Travka [436]
2 years ago
7

The words ""antigen"" and ""virus"" are interchangeable.

Biology
1 answer:
andrew11 [14]2 years ago
6 0

Answer:

False

Explanation:

A virus (which is a pathogen) has a lot of antigens on its surface, so they can't be used interchangeably.

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Discribe the structure of paramecium​
Elanso [62]

Answer:

The widest part of the body is below the middle. The body of a paramecium is asymmetrical. It has a well-defined ventral or oral surface and has a convex aboral or dorsal body surface. Its whole body is covered with a flexible, thin and firm membrane called pellicles.

Explanation:

7 0
3 years ago
Read 2 more answers
"You discover a new species of snail, Biologica terificia, and find that its haploid number is 4 (n = 4). The somatic cells of B
Georgia [21]

Answer:

8 chromosomes

Explanation:

Diploid state is when an organism have two set of chromosomes (2n) i.e. combination of two haploid (n) gametes containing one set of chromosome each. Sexually reproducing organisms whose somatic or body cells are diploid (2n) undergo meiosis to produce gametes or sex cells with haploid number (n).

Therefore, in the newly discovered Biologica terificia species of snail, if the haploid state (n) of their gametes is 4, then their diploid (2n) somatic cells must be 4 × 2 = 8.

The question specifies the chromosomal number at the G1 phase of Interphase. At this stage, the cell is preparing to undergo division by increasing in size and duplicating its organnelles but not yet its genetic material which is not until the next phase called S-phase. Hence, the chromosome number of somatic cells remain 8 at the G1 phase.

6 0
3 years ago
The biological levels of organization range from a single cell all the way up to the biosphere in a highly structured hierarchy.
Tom [10]

Answer:

B) Tissue is made of different types of cells.

D) Organs are made of different types of tissue.

Explanation:

The tissues are made of different types of cells. The organs are also made of different types of tissue. There is no need of same types of tissues to make organs. Thus, option (B) and (D) is correct answer.

5 0
2 years ago
Plants can be grown experimentally without light. what key supplemental ingredient is needed for this to occur?
klio [65]
Sugar is needed for scientists to grow plants

4 0
2 years ago
Which of the following is composed of more dense tissue?
klasskru [66]
C Dermis because it’s not the others ones
4 0
3 years ago
Read 2 more answers
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