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kirill115 [55]
3 years ago
8

Define a branch point (also called a node) on a phylogenetic tree and describe what it represents.

Biology
1 answer:
Gala2k [10]3 years ago
4 0
In a rooted phylogenetic tree, each node ... phylogenetic tree that explicitly represents evolutionary time through its branch spans. A spindle diagram (often called
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Frederick Griffith infected mice with a combination of dead R and live S bacterial strains. What was the outcome, and why did it
Novosadov [1.4K]

Answer:

The correct answer will be option-The mice will die. Transformation of genetic material from R to S was required.

Explanation:

Frederick Griffith performed an experiment on the mouse using two strains of the <em>Streptococcus pneumonia</em> which are R (rough avirulent strain) and S (smooth-virulent strain).

In the experiment when he injected the live S bacteria with dead R bacteria, the mice died, opposite of the expected result that mice would not die. This amazed Griffith and he concluded that some transformation of the bacteria has happened due to which the mice died. The R bacteria became S bacteria (virulent) due to the transformation which was proved later that the bacteria took the DNA of the dead S bacteria from the surrounding.

Thus, the selected option is the correct answer.

5 0
3 years ago
Type of nutrition shown by all fungi​
Ivahew [28]
The answer is heterotrophic
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3 years ago
An animal cell (left) and a plant cell (right) are shown. Which organelle, labeled X in the diagram, is found in both plant and
IceJOKER [234]

The rigth answer is cell membrane.

A cell membrane distinguishes a fundamental cellular structure formed from a double layer of phospholipids associated with other lipids, proteins and carbohydrates.

The membrane of the cell, also known as the plasma or cytoplasmic membrane, is a biological membrane (biomembrane) that separates the interior of all cells from the external environment.

The plasma membrane, cytoplasmic membrane or plasmalemma delimits the cytoplasm of the cell. Organelles are surrounded by a single cell membrane (peroxisomes, lysosomes, endoplasmic reticulum, dictyosomes, vacuole) or double (nucleus, plastids).

4 0
4 years ago
Read 2 more answers
The transmembrane protein Tango1 is a packaging protein that helps some secretory proteins leave the endoplasmic reticulum (ER)
scoundrel [369]

Answer:

Procollagen VII; COPII components.

Explanation:

The endomembrane system present in eukaryotes divides the  cell organelle into the structural and functional compartment. This helps in the transport of protein, its signalling and processing of protein.

Tango1 is the packaging protein that are destined to the golgi. The interaction of procollagen VII and CopII vesicle with tango is important as these helps in the transport of tango protein to the golgi. The cop II coated vesicle is important for the transport of the protein that are destined to golgi.

Thus, the correct answer is option (B).

6 0
4 years ago
_________6. The molecule of which pigment is located at the reaction center of a photosystem?
soldier1979 [14.2K]

Answer:

D. Chlorophyll a

Explanation:

lucky you, had same quiz.

6 0
4 years ago
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