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spin [16.1K]
3 years ago
7

Can someone help me please

Biology
2 answers:
kicyunya [14]3 years ago
8 0
A is centromere
B is chromosomes but more correctly known as sister chromatids
Nesterboy [21]3 years ago
5 0

Answer:

a. Centromere

A centromere is a specialised DNA sequence of a chromosome that links pair of sister chromarids (a dyad)

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In a forest ecosystem, a species of bird was introduced. The birds had few predators, and for a period of time its population ro
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Answer: d. The ecosystem reached its carrying capacity, and was not able to support continued population growth.

Explanation:

The carrying capacity can be defined as the maximum population size of the species that habitat or ecosystem can support or sustain on the basis of availability of food, water and other necessities. This is an important factor which keeps a balance of the population of a species in a particular region or ecosystem.

On the basis of the above information, The ecosystem reached its carrying capacity, and was not able to support continued population growth is the correct option to level off the rising populating of the birds.

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3 years ago
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What do birth rate, death rate, immigration, and emigration determine about a population?
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How it increases and decreases
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In fungi, the 80S sedimentation coefficients are synthesized by this intracellular structure. ___________
Vladimir79 [104]

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Nucleolus

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The nucleolus is a compact structure present in the nucleus of fungal cells and all other eukaryotic cells. The nucleolus is not enclosed by a membrane. Nucleolar organizer present in the nucleolus contains the instructions for the synthesis of ribosomal RNAs.

Ribosomal proteins are synthesized in the cytoplasm. The ribosomal proteins are transported from the cytoplasm into the nucleolus. Assembly of ribosomal proteins and ribosomal RNAs to make ribosomal subunits occur inside the nucleolus which then enters cytoplasm to carry out protein synthesis.

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Although it is not the primary flux-control point for glycolysis, pyruvate kinase is subject to allosteric regulation. What is t
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Pyruvate kinase is the important enzyme that catalyzes the conversion of phosphoenol pyruvate into the pyruvate in the glycolysis cycle. This step generates the ATP molecule.

The regulation of the pyruvate kinase is done by the allosteric regulation and   fructose 1,6 biphosphate activates the pyruvate kinase. This regulation is important as it control the metabolites present in different organs. The metabolites like fructose, galactose enters in the glycolysis from the liver after the particlar step of glycolysis.

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