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lana [24]
3 years ago
14

A. What is a chromatid and how does it compare to a chromosome?

Biology
1 answer:
sukhopar [10]3 years ago
6 0

A chromosome consists of a single, double-stranded DNA molecule. Chromatids are two molecules of double-stranded DNA joined together in the center by a centromere. Chromosomes have a thin ribbon-like structure. Chromatids have a thin and long fibrous structure.

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Why is animal enrichment important
ser-zykov [4K]

Answer:

Enrichment helps satisfy both the physical and psychological needs of animals and allows them to make choices. Thus, animal enrichment creates a win-win-win situation for the animals, visitors and keepers! In the wild, animals must find food, defend territories, escape predators and build homes.

5 0
3 years ago
When you were testing the ciliospinal reflex and only stimulated the left side of the subject, was the response reflex contralat
natulia [17]

Options: A. contralateral

B. ipsilateral

C. both

Answer:B. ipsilateral

Explanation:The ciliospinal reflex which is also known bas pupillary-skin reflex is usually made uo of the dilation of the ipsilateral pupil this dilation is in response to pain applied to the neck, face, and upper trunk.

If you stimulate the left side of the subject, the response will be only in the ipsilateral which means the stimulation will be felt in the same side of the subject which in this case is the Left side if the subject.

5 0
4 years ago
what is the correct order of steps in a gram staining procedure? 1. iodine is added as a fixative or mordant. 2. the specimen is
Setler79 [48]

The correct order of steps in a gram staining procedure is:

(4) the specimen is treated with a stain called crystal violet.

(1) iodine is added as a fixative or mordant.

(3) the specimen is flushed with alcohol to dehydrate peptidoglycans and trap the stain.

(2) the specimen is treated with a stain such as safranin or fuchsin (a pink stain)

Gram staining is a common staining technique which helps to classify the bacteria into two categories: Gram positive and Gram negative. Gram positive bacteria appear violet in color and Gram negative bacteria appear to be pink. This color difference appears due to the difference in the bacterial cell walls.

To know more about Gram staining, here

brainly.com/question/14969595

#SPJ4

5 0
1 year ago
Which of the following is a community?
lukranit [14]

Answer:

B. All of the fish, bacteria, and mammals that live in a lake

Explanation:

In terms of biology an individual make population, population makes a species and interaction between different species makes community. Interaction of living and non-living things make an ecosystem.

Community involves interaction between all the living organisms present in a given environment. Hence, interaction between fish, bacteria, and mammals that live in a lake is a community.

Hence, the correct answer is "B. All of the fish, bacteria, and mammals that live in a lake".

4 0
3 years ago
The lining of the uterus that is discharged during the menstrual flow phase is the
Nana76 [90]
The lining is the e<span>ndometrium </span>
4 0
3 years ago
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