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likoan [24]
3 years ago
9

Which stars are white dwarfs?​

Biology
1 answer:
MA_775_DIABLO [31]3 years ago
4 0

Answer:

White Dwarf Stars.

Explanation:

A white dwarf is what stars like the Sun become after they have exhausted their nuclear fuel. Near the end of its nuclear burning stage, this type of star expels most of its outer material, creating a planetary nebula. Only the hot core of the star remains.

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what natural hazard is often caused by human activities and is triggered during and after periods of drought
Gwar [14]

I would say dust storm, From us moving earth.

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3 years ago
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rue or false: DNA replication in eukaryotes occurs unidirectionally from multiple origins of replication.
IrinaVladis [17]

Answer:

False

Explanation:

In eukaryotes, replication begins from multiple origins of replication and the replication forks move bidirectionally to replicate the DNA.

6 0
2 years ago
What is the era of the multicellular algae
viva [34]

Answer:

its the phanerozoic era

3 0
3 years ago
Describe the behavior of the frog heart that you can elucidate from the force recording (e.g., mechanical events). How can you u
Sladkaya [172]

Answer:

P wave and R wave

Atrial contraction = P wave

Ventricular contraction = R wave

Explanation:

The behavior of the frog heart from force recording  can be classified into ; P wave and R wave.

utilizing the ECG ( Electrocardiogram) data the aspect of the force recording that is due to atrial contractions is the ; P wave while the force recording that is due to ventricular contractions is the ; R wave  the ventricular contractions is also known as QRS

ECG is used to record the electrical activities of a heart at rest

3 0
3 years ago
Place the events in the correct order:
Alecsey [184]

Answer:

1. Chromatin condense into chromosomes.

4. Homologous chromosomes pair up (formation of tetrads).

5. Homologous chromosomes separate and move to poles.

2. Sister chromatids separate.

3. Chromosomes unravel in to chromatin.

Explanation:

This question portrays the process of meiosis in a cell. The ordered sequence of events in the options are:

1. Chromatin condense into chromosomes - This process occurs in the Prophase stage. Prior to the cell division, the nuclear material is found as Chromatin material. This Chromatin material then undergoes condensation to form visible chromosomes.

4. Homologous chromosomes pair up (formation of tetrads) - This process also occurs during the Prophase stage of meiosis I. In this stage, homologous chromosomes (similar but non-identical chromosomes received from each parent) are paired up side by side to form a structure known as TETRAD or BIVALENT.

5. Homologous chromosomes separate and move to poles - This process characterizes the Anaphase stage of meiosis I. Homologous chromosomes are pulled apart to opposite poles of the cell by spindle microtubules.

2. Sister chromatids separate - After meiosis I, meiosis II involving sister chromatids instead of homologous chromosomes follows. In the Anaphase stage of meiosis II specifically, sister chromatids are pulled apart towards opposite poles of the cell.

3. Chromosomes unravel in to chromatin - After the whole division process i.e. karyokinesis (division of the nuclear material), the chromosomes begin to unravel to form the CHROMATIN threads once again. This process occurs in the Telophase stage of meiosis.

5 0
3 years ago
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