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3 years ago

Light sensitivity in the euglena is provided by the eyespot. true or false??

Biology

2 answers:

madam [21]3 years ago

6 0

That statement is true

pshichka [43]3 years ago

6 0

Answer:

True

Explanation:

The eyespot is an organ that helps in light reception and is usually present in unicellular organisms and some multicellular invertebrates.
The eyespot is also present in Euglena, which is a green unicellular organism and the eyespot helps it to receive and detect light.
The light detection helps the euglena to move as the eyespot is located at the base of the flagellum and this eyespot helps influence the flagellar motion.

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Both aerobic and anaerobic respiration yield a net gain of ATP molecules to be used as energy for living things. The processes o

11111nata11111 [884]

C) Oxidative phosphorylation

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3 years ago

What is not an impact that an invasive non-native spices has on an ecosystem

Y_Kistochka [10]

c) increase biodiversity

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2 years ago

Read 2 more answers

4. Which event would be the most predictable one year in advance of the event?

Black_prince [1.1K]

Answer:

1. an eclipse of the Sun

2. state (phase) of matter

3. 5.0 g/cm3

Explanation:

1. Eclipse of the sun occurs when the planetary bodies align in such a way that causes the moon to block sunlight from reaching the Earth. The eclipse of the Sun will be the most predictable occurrence because it follows a pattern of occurrence. Eclipse of the sun occurs after a specific period of time, hence, based on this, scientists can predict that when it will occur next using its previous pattern of occurrence.

2. Considering the following groups: Group A: water, aluminum, water vapor

Group B: gasoline, ice, air

Group C: alcohol, iron, oxygen

One would realize that each constituent of each group exists in a particular state of matter. For example, in group B, gasoline is a liquid, ice is a solid while air is a gaseous mixture. Same applies for group A and C where water and alcohol are liquids, iron and aluminum are solids, while water vapor and oxygen are gases.

This shows that the STATE (PHASE) OF MATTER was the basis of classification.

6 0

3 years ago

Which cross shows both parents having two different alleles for each of two different genes?

shtirl [24]

Answer:

The correct option is Number 1. AaBb x AaBb

Explanation:

Genes can be described as basic hereditary units. The genes are made up of DNA.

A gene carries two alleles for a particular trait. These alleles are present at the same loci in the homologous chromosomes. If the two alleles are similar then they are termed as homozygous e.g AA, BB. If the alleles for a trait are different then they are termed as heterozygous e.g Aa and Bb.

7 0

3 years ago

if there are 500 people in a population, and 150 are homozygous HbA/hba, 150 are homozygous hbs/hbs, and 200 are heterozygous hb

sineoko [7]

Answer:

$0.547$

Explanation:

Given -

Total Population - $500$

Individuals with homozygous HbA/hbA genotype - $150$

Individuals with homozygous hbs/hbs genotype - $150$

Individuals with heterozygous hba/hbs genotype - $200$

Let us assume the given population is in Hardy Weinberg' equilibrium

The frequency of individuals in the given population with homozygous HbA/hba genotype is equal to number of individuals with homozygous HbA/hba genotype divided by total population.

$\frac{150}{500} \\= 0.3$

The frequency of hba allele is equal to

$\sqrt{0.3} \\= 0.5477$

3 0

3 years ago