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mezya [45]
2 years ago
8

(ASAP PLEASE) Dichotomous key of brewer’s yeast (saccharomyces cerevisiae) e. coli bacteria (escherichia coli) green hydra (hydr

a viridissima) house cat (felis catus)
Biology
1 answer:
Serjik [45]2 years ago
4 0

Answer:

Does the organism have legs?

Does the organism reproduce asexually?

Can the organism ferment?

Is the organism infectious?

Explanation:

The questions HAVE to be yes or no, in order for it to effectively determine which species is which.

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Who are the husband and wife depicted in these Byzantine mosaics, and what religious sacrament are they celebrating?
vlabodo [156]

Answer:

Byzantine art originated and evolved from the Christianized Greek culture of the Eastern Roman Empire; content from both Christianity and classical Greek mythology were artistically expressed through Hellenistic modes of style and iconography.

8 0
2 years ago
Which of the following is an important exception to the central dogma of molecular biology? a) Proteins are responsible for most
iogann1982 [59]

Answer:

b: many genes code for RNAs that function directly in the cell

Explanation:

<em>The central dogma</em> theory describes the basic framework for gene expression in living organisms. Genetic information from DNA is encoded or transcribed as RNA which then becomes translated as proteins.

The processes that take place for gene to be successfully expressed are;

  • Replication
  • Transcription
  • Translation

<em>Replication</em> is a process whereby DNA makes a copy of itself to be distributed in daughter cells during cell division.

<em>Transcription</em> is the process whereby genetic information in DNA is encoded as RNAs. The RNAs are short-lived as they are quickly utilized in protein synthesis or <em>translation </em>process.

Hence, the RNAs do not function directly in the cells but mere intermediaries in the synthesis of proteins.

<em>The correct option is b.</em>

3 0
2 years ago
Read each of the sentences that describe a phase of meiosis. Place each sentence into the correct box.
Ksivusya [100]
Can you show the picture of the question please?
5 0
2 years ago
Place the following events of excitation in the correct order. 1) ion channels on the sarcolemma open and sodium ions enter the
Gre4nikov [31]

Answer:

4, 3 5, 1, 2.

Explanation:

The events of muscle contraction begins from the presynaptic neuron, which cause the influx of Ca+, and the release of acetycholine neurotransmitter  into the synaptic cleft.

The Ach, binds with the receptors in the sarcolemma, leading to opening of Ligand gated Na+ channels. Therefore Na+diffuses in, causing depolarization, and propagation of action potential along the sarcolemma  spreading to the  T-tubules.

This is followed by opening of Calcium channels leading  exist of Ca+ from the sarcoplasmic reticulum.

The Calcium binds with the troponin, and  Tropomysoin exposed the myosin binding sites  on the actin filament.Thus cross-bridge is formed by the myosin head  with thin filaments which   shortened the sarcomere, leading to contraction of muscle fibres.

6 0
2 years ago
Difference in leaf cell and root hair cell?
kumpel [21]
As a leaf cell is a plant cell contains chloroplasts for photosynthesis which the root hair cell does not have, leaf cell also contains larger vacuoles and the presence of a cell wall.
4 0
2 years ago
Read 2 more answers
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