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butalik [34]
3 years ago
9

Describe the structure of and function of microtubes.

Biology
1 answer:
steposvetlana [31]3 years ago
3 0

Microtubules are tiny, hollow, bead-like tubular structures that help cells maintain their shape. Along with microfilaments and intermediate filaments, they form the cytoskeleton of the cell, as well as participate in a variety of motor functions for the cell.

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What would happen to the supply of ATP in your cells if you ate too few carbohydrates
zimovet [89]
The supply of ATP in your cells would decrease. Not enough energy would be able to be supplied to your cells.
5 0
3 years ago
. In pea plants, the allele for tall plants (T) is dominant to the allele for short plants (t). You observe that the offspring o
sasho [114]

Answer:

a) Genotype of each parent plant= Tt

b) Genotypes of parent plants= Tt and tt

Explanation:

a) In the first cross, the tall and short progeny was obtained in almost a 3:1 ratio (78: 27). This means that both the parent plants were heterozygous for the gene of plant height. The genotype of each of the parents was Tt. A cross between Tt and Tt gives following progeny ratio=

Tt x Tt = 3 tall (1/2 TT and 1/4 Tt) : 1 short (1/4 tt)

b) In the second cross, tall and short progeny was obtained in almost a 1: 1 ratio (121: 118). This means that one parent plant was homozygous recessive (tt) and the other was heterozygous dominant (Tt).

Tt x tt = 1 tall: 1 short.

4 0
3 years ago
Which of the following correctly describes the disruption of an ecosystem service by an anthropogenic activity?
ehidna [41]

Answer:

The correct answer is "Provisioning services are disrupted by increased combustion of fossil fuels, which leads to an increase in air pollution".

Explanation:

The ecosystem provides several services that if used with responsibility, could be sustained by the nature. Unfortunately, disruption of an ecosystem service could happen by an anthropogenic activity, which are the activities that humans perform. One example is the disruption of provisioning services by increased combustion of fossil fuels, which leads to an increase in air pollution. The ecosystem provides clean air that gives oxygen for people and animals to breath, however high combustion of fossil fuels could disrupt this service.

8 0
3 years ago
Which of the following plants do NOT have swimming sperm?
Furkat [3]

Answer:

None of these.

Explanation: The plants like cycads and ginkgos have swimming sperms. they need water to complete their life cycle.

There are many adaptations seen in the plants like liveworts, ferns and mosses in which they require water to complete its life cycle. This adaptation is not only restricted upto cyptograms. This can also be seen in the plants like ginkgos and cycads. Their sperms are very strange.

8 0
4 years ago
Under what conditions can carrying capacity for a population reach equilibrium
dedylja [7]

Answer:When food, water, and space used by a population stay stable over time.

Explanation:

7 0
3 years ago
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