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german
2 years ago
15

[OU.04]The theories on the origin of the universe

Biology
1 answer:
lions [1.4K]2 years ago
6 0
<h3><em>Answer:</em></h3><h2><u><em>Cannot change because of new discoveries</em></u></h2><h3><em>Explanation:</em></h3><h3><em>lol</em> sorry for a late reply but I got it right on the test, <u><em>these theories cannot change because of new discoveries since theories do not change and theories cannot become laws and vice versa</em></u></h3>
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"which body cavity would be opened for a total knee joint replacement"
Xelga [282]

Answer;

-Synovial cavity

Explanation;

-The synovial cavity/joint is filled with synovial fluid. A synovial joint contains a synovial cavity and dense, irregular connective tissue that forms the articular capsule normally associated with accessory ligaments.

-A synovial joint occurs at articulating bones to allow movement. It is distinguished by a surrounding synovial capsule.The bones of a synovial joint are surrounded by a synovial capsule, which secretes synovial fluid to lubricate and nourish the joint while acting as a shock absorber.

7 0
3 years ago
Differentiate between a plant cell and a prokaryotic cell
Nat2105 [25]
<h2>Plant cell:-</h2>
  • plant cell have a well defined nucleus.
  • plant cell have plastid.
  • plant cell has a thick covering of wall.
  • plant cells have many other organelles.

<h2>Prokaryotic cell:-</h2>
  • prokaryotic cell has no nucleus.
  • it do not have plastid.
  • prokaryotic cell don't have any thick covering of wall or membrane.
  • it has no organelles body.

5 0
3 years ago
Read 2 more answers
A scientist observes some cells under a compound microscope and needs to determine if they are bacteria or yeast. Aside from siz
MAXImum [283]

Answer:

chitin and murein

Explanation:

The chemical compounds that distinguish bacteria cell from yeast cell are  

chitin and murein

Chitin is a polysaccharide present in the exoskeleton of fungi made up of chains of modified glucose known as N-acetylglucosamine. N-acetylglucosamine is derived from glucose

While murein is a mesh like structure made up of sugar and amino acids. Murein forms a layer outside the plasma membrane of bacterial cell.  

8 0
3 years ago
Read 2 more answers
Brown eyes is dominant to light eyes. Mr. O'Ryan has blue (light) eyes. Mrs. O'Ryan is heterozygous for brown eyes. What are the
d1i1m1o1n [39]

Answer:

Brown eyes = 0.5

Blue eyes = 0.5

Explanation:

Given, B ( brown eyes ) is dominant over b ( blue/light eyes ). So,

BB = Brown

Bb = Brown

bb = blue/light

Mr. O'Ryan = blue eyes = bb

Mrs. O'Ryan = heterozygous brown eyes = Bb

Their children: Bb X bb :

      B        b

b    Bb     bb

b    Bb     bb

Half of the children will have Bb genotype and brown eyes, other half will have bb genotype and blue eyes. Hence, Kellan O'Ryan has 0.5 probability of blue eyes and 0.5 probability of brown eyes.

6 0
3 years ago
Which of the following is not in the phylum Arthropoda?
Amanda [17]

Answer:

Clam.

Explanation:

Arthrophoda is largest phylum of the non-chordata. They are the segmented animals with jointed appendages. Their body is covered by exoskeleton and contains spiracles and body surface for respiration.

Insect, spider, crab and scorpion all are included in the phylum arthropoda. Clam is a bivalve shell that is included in the phylum mollusc. The body of clam is covered with an outer shell and their shells are connected by the abductor muscle. Hence, they are involved in phylum arthropoda.

Thus, the correct answer is option (b).

7 0
3 years ago
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