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3 years ago

Please help me out guys. I’m not sure about the answer.

Biology

1 answer:

drek231 [11]3 years ago

4 0

Answer:

The correct option would be option 3) organism 1 and 3 will be more closely related than organisms 2 and 4.

Explanation:

Depending on the physical characteristics only, we can see that the organisms shown in number 1 and in number 3 are similar o one another but not purely identical. This means that these organism are closely related to one another.

The organisms shown in option 2 and 4 are not very similar to one another depending on the physical characteristics. Hence, we can say that organisms shown in number 1 and number 3 are more closely related to one another s compared to the organism shown in option 2 and 4.

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A straight line of energy flows is a food web or a food chain?

butalik [34]

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3 years ago

PS: PLEASE DO NOT PUT A LINK! THERE ARE 4 QUESTIONS.

Alex777 [14]

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3 years ago

The peptidoglycan cell wall and the one or two membranes present also impart a three-dimensional shape to the bacterial cell. Th

denis-greek [22]

Answer:

The following images of different types of bacteria are attached here-

1- Single round bacterium- Cocci

2- Single rod-shaped bacterium- Bacilli

3- Cluster of round bacteria - Staphylococci

4- String of rod-shaped bacteria- Streptobacillus

5- Comma-shaped bacterium- Vibrio

6- Corkscrew-shaped bacterium- Spirillium

Explanation:

1- Single round bacterium- Cocci -Any bacterium or archaeon that has a circular, ovoid, or usually round shape is a coccus (plural cocci). Cocci may develop in pairs, chains, or clusters during cell division, depending on their orientation and attachment. Many cocci bacteria do not have flagella and are non-motile, in contrast to many bacilli-shaped bacteria.

2- Single rod-shaped bacterium- Bacilli -A rod-shape bacterium or archaeon is a bacillus (plural bacilli), or bacilliform bacterium. In several different taxonomic classes, bacilli are found. Bacilli typically divide and are solitary in the same plane, but can combine to form diplobacilli, streptobacilli, and palisades.[2]

Diplobacilli: Two bacilli with each other arranged side by side.

Streptobacilli: Arranged bacilli in chains.

Coccobacillus: Coccus-like and oval (circular-shaped bacterium).

3- Cluster of round bacteria - Staphylococci - In the family Staphylococcaceae from the order Bacillales, Staphylococcus is a genus of Gram-positive bacteria. They appear spherical (cocci) under the microscope, and form into grape-like clusters. The species Staphylococcus are facultative anaerobic organisms (both aerobically and anaerobically capable of growth)

4- String of rod-shaped bacteria- Streptobacillus -Streptobacillus is a genus of fastidious gram-negative microaerophilic bacteria, an uncommon disease that develops in culture as rods in chains.t and can be caused by two forms of bacteria, Spirillum minus and Streptobacillus moniliformis.

5- Comma-shaped bacterium- Vibrio -Vibrio is a genus of Gram-negative bacteria with a curved-rod (comma) shape, which can cause foodborne infection in several animals, typically associated with consuming undercooked seafood. Vibrio species, usually found in salt water, are optional anaerobes that test positive for oxidase and do not form spores.

6- Corkscrew-shaped bacterium- Spirillium -Spirillum, a genus of spiral-shaped bacteria of the Spirillaceae family, aquatic with the exception of one species (S. minus) causing a form of human rat-bite fever. For any of the corkscrew-like animals, the name spirillum is used commonly.

Microbiologically, Spirillum is characterized as a gram-negative, motile helical cell with whiplike flagella tufts at each end.

hence, the images of the different bacteria are attached below-:

7 0

3 years ago

Over the last 50 years there has been a noticeable increase in global temperatures, which of the following best explains this ph

Naily [24]

Answer:

Explanation:

The carbon dioxide coming from our vehicles is really affecting the ozone layer

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3 years ago

Since each myofibril is attached at either end of the muscle fiber, when sarcomeres shorten, the muscle fiber

zmey [24]

Answer:

B. Shortens

Explanation:

Myofibrils are components of the animal skeletal muscles that are made up of sacromeres. They perform the muscular contraction and relaxation via the sliding filament model.

To produce motion, A cross-bridge forms between actin and the myosin heads triggering shortening of the sacromere. This shortening of the sacromere results in the contraction of the muscle fibers, which the net effect can be seen to be a shortening of the fibers

3 0

3 years ago

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