BIOLOGY HIGH SCHOOL

If an organism has alleles BB, it is

Answers

Answer 1
Answer:

Answer:

An organism has a homozygous dominant trait if he has a BB allele.

Explanation:

An organism with two copy of same allele BB or bb considers as homozygous. These homozygous alleles can be recessive bb which is generally masked by dominant if present in combination or dominant BB in nature. Dominant characters or traits are commonly shown by capital letters and recessive traits are shown by small letters. Dominant traits generally appear more then recessive in phenotypes.

Hence, If an organism has allele BB then he has a homozygous dominant trait.

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The principal characteristic that differentiates temperate and tropical rainforests is __________

Answers

Answer;

Latitude

The principal characteristic that differentiates temperate and tropical rain-forests is latitude.

Explanation;

  • There are two types of rain-forests, namely, the tropical rain-forests and the temperate rain-forests. These two types share some similarities such as being rich in plant and animals species with a greater diversity in tropical rain forest.
  • However they differ in a number of ways; tropical rain-forests are warm and moist; while temperate rain-forests are cool.
  • Tropical rain-forest, forested areas must: Lie between the Tropic of Cancer and the Tropic of Capricorn, receive rainfall regularly throughout the year, remain frost and free through out the year with little fluctuations.
The principal characteristic that differentiates temperate and tropical rainforest is latitude

What property of water allows it to be such a versatile solvent?

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water is often called the universal solvent because many substances can be dissolved in water

What carbohydrate provides energy for cows but only dietary fiber for humans?

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Simple but very simple question. Cellulose.
The answer is Cellulose. It does not provide calories/energy. The human digestive tract cannot break it down, so it is indigestible in humans.

In which phase is the full illuminated face of the Moon visible on Earth?A) New moon
B) Full moon
C) Waning gibbous
D) Waxing crescent

Answers

Full Moon is the answer, letter B.

When the full illuminated face of the Moon visible on Earth, it is on the Full Moon phase.

>New moon                         - the illuminated side of the Moon is away from the Earth. only  the shadowed side can be seen. 

>Waning gibbous               - the Moon is less than fully illuminated, but, is more than half.

>Waxing crescent               - first sliver of the Moon that we can see.

Answer:

The answer is B

Lunar phases occur when the Moon appears to change shape as seen from Earth. What causes different phases of the Moon? Select one:
a. the tilt of the axis of Earth
b. the shadow of Earth falls on the Moon
c. the alignment of the Sun, Moon, and Earth in a straight line
d. the amount of the sunlit side of the Moon that faces Earth

Answers

Lunar phases are visible according to the amount of sunlit side of the moon facing the earth. So the correct option is D.

Why are lunar phases formed?

The moon does not produce any light of its own and only reflects the light falling on it from the sun. The sunlight hits all the sides of the moon but we can only see it when it falls on the side, or the part of the side visible to us.

So, when sunlight hits the far side of the moon, it is called a new moon. The far side is the side of the moon not visible from earth. Therefore we are unable to see the moon when this happens.

But when sunlight falls and reflects from the near side of the moon, a bright round structure of the moon is visible from the earth. This is called full moon.

Other than that there is the waning crescent, waxing crescent, first quarter, waxing gibbous, waning gibbous and third quarter. All these depend on the side of the moon visible from the earth when sunlight falls on it.

When, during the course of the revolution, the earth comes between the sun and moon blocking sunlight on the moon, a lunar eclipse occurs.

Therefore, the correct option is D.

Read more about lunar phases, here

brainly.com/question/21118460

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The phases of the Moon depend on its position in relation to the Sun and Earth. As the Moon makes its way around the Earth, we see the bright parts of the Moon's surface atdifferent angles. 
so d it is. 
brainliest?

Melissa is studying a Gram-stained slide of curd bacteria. She sees many rod-shaped, violet-colored bacteria. What type of bacteria are they?

Answers

Answer:

By the observation, the rod shape violet-colored bacteria could be a Gram-positive bacillus which is Lactobacillus spp.  in curd.

Explanation:

Gram-stain is a staining method to isolate and study the Gram-positive or Gram-negative bacteria with the help of the crystal violet dye. Crystal violet dye stains both Gram-positive and Gram-negative bacteria in purple stain. After decolorization, Gram-negative bacteria appears to be pink in color, however,Gram-positive bacteria remain purple.

According to bacteria structure, they term as bacillus (rod), strepto (clusters or threads) or Diplo (in pairs).

Thus, according to the observation, the rod shape violet colored bacteria are Gram-positive bacillus which is Lactobacillus spp. in curd.
Rod shaped = bacilli
Purple =Gram positive
The bacteria is Lactobacillus
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